Camera module for multi-camera system

Abstract

To provide a camera module for a multi-camera system that experiences less change in dimensions, has good strength, and can acquire excellent information, even in various external environment conditions.SOLUTION: The present invention is a camera module used for a multi-camera system, and the camera module comprises a component formed of a thermoplastic composition containing polyphenylene ether (A1), crystalline resin (A2), and inorganic filler (excluding carbon fiber) (B), having a glass-transition temperature of 110°C or more, and having a melting point of 275°C or more.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a camera module for a multi-camera system, and more particularly to a camera module for a multi-camera system mounted on an automobile. [Background technology]

[0002] With recent technological advances, there has been an increase in the number of automobiles that integrate and process information acquired by multiple cameras. For example, with the advancement of driver assistance and autonomous driving functions, it is becoming increasingly important for on-board cameras to accurately acquire data from a variety of fields, including the area around the vehicle and the distant area. In particular, the role of camera components, which act as a substitute for the human eye, is playing an important role.

[0003] In applications where information is acquired from multiple cameras (sometimes called multi-camera systems), the clarity of each image is important because the acquired information is integrated and processed. In particular, in-vehicle cameras are used over long periods of time in a variety of environments, such as high temperature, low temperature, humid environment, and dry environment, so they need to be able to acquire clear images in these diverse environments.

[0004] In the above-mentioned vehicle-mounted camera, resin materials are used for the camera lens body, housing, etc. Such resin materials generally undergo dimensional changes due to changes in the external environment, i.e., changes in temperature and humidity. For this reason, when components such as the lens barrel (sometimes called the lens barrel) that secures the camera lens are made of resin, it is desirable for the dimensional change caused by these changes to be minimal. This is because distortion of the lens due to dimensional changes in the lens barrel can shift the imaging position on the light-receiving sensor, which was optimally adjusted during assembly, resulting in blurred captured images. Blurred images can adversely affect the aforementioned integration process, causing processing delays and reduced accuracy. Especially in vehicle-mounted camera applications, where human lives are at stake, delays in information processing and reduced accuracy can be fatal, so it is desirable for the components used to have minimal dimensional change.

[0005] For example, a lens module, which is a lens barrel with a built-in lens, is attached to a base via a part called a lens holder (see Figure 1 for reference). The lens holder is used to adjust the distance between the lens and the light-receiving sensor and the optical axis. For this reason, if the lens holder is made of resin, it is desirable that its dimensions do not change much due to the external environment, just like the lens barrel. This is because dimensional changes in the lens holder could change the distance between the lens barrel and the light-receiving sensor, or the lens could be deformed due to load being applied to the lens barrel.

[0006] Furthermore, when the component combining the lens module and the board via the lens holder is covered with a housing, it is also desirable for the camera module (see Figure 1, for example) that the housing parts are made of resin, as with the lens barrel and lens holder mentioned above, that the dimensional change due to the external environment is small. This is because dimensional change in the housing may change the distance between the lens barrel and the light receiving sensor, and the lens may be deformed due to load being applied to the lens barrel or lens holder.

[0007] As a technology for suppressing dimensional change in resin parts, for example, Patent Document 1 discloses a resin composition with a small linear expansion coefficient that exhibits minimal dimensional change even in high-temperature environments. However, the resin composition disclosed in Patent Document 1 has a linear expansion coefficient that can be measured at 200°C, which is far too high for the intended use of an in-vehicle camera. As mentioned above, in-vehicle cameras are installed in the same interior space as passengers or on the exterior of the vehicle. For this reason, it is not realistic to install an in-vehicle camera in an environment as high as 200°C.

[0008] As mentioned above, components installed outside the vehicle are exposed to a wide range of conditions, including high and low temperatures, humidity, and dryness, over long periods of time, all within the range of the natural environment. Repeated exposure to multiple conditions, such as seasonal changes, is also considered to be a problem. Therefore, it is important that each of the multiple components that make up the camera module used in a multi-camera system maintain stable dimensions over a long period of time in such an environment, but Patent Document 1 does not disclose such issues or solutions. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] International Publication No. 2022 / 085584

[0010] Therefore, an object of the present invention is to provide a camera module for a multi-camera system that exhibits little dimensional change, has good strength, and is capable of acquiring excellent information even under various external environmental conditions. Summary of the Invention [Problem to be solved by the invention]

[0011] As a result of extensive research to solve the above-mentioned problems, the inventors discovered that the above-mentioned object can be achieved by including a camera module for a multi-camera system containing a component that includes a resin composition having a specific composition and specific physical properties, and thus arrived at the present invention.

[0012] [1] A camera module for use in a multi-camera system, A camera module for a multi-camera system, characterized by comprising a component made of a thermoplastic resin composition containing polyphenylene ether (A1), a crystalline resin (A2), and an inorganic filler (excluding carbon fiber) (B), and having a glass transition temperature of 110°C or higher and a melting point of 275°C or higher. [2] The camera module for a multi-camera system according to [1], wherein the thermoplastic resin composition further contains a styrene-based resin (A3). [3] The camera module for a multi-camera system according to [1] or [2], wherein the solidification temperature of the thermoplastic resin composition is 300°C or lower. [4] The camera module for a multi-camera system according to any one of [1] to [3], wherein the crystalline resin (A2) is a semi-aromatic polyamide (A2-1) or a polyphenylene sulfide (A2-2). [5] A camera module for a multi-camera system according to any one of [1] to [4], characterized in that the content of the inorganic filler (B) is 10 to 150 parts by mass relative to 100 parts by mass of the total of the polyphenylene ether (A1) and the crystalline resin (A2), or 100 parts by mass of the total of the polyphenylene ether (A1), the crystalline resin (A2), and the styrene-based resin (A3). [6] The camera module for a multi-camera system according to any one of [1] to [5], wherein the inorganic filler (B) is at least one selected from the group consisting of glass fiber, calcium carbonate, talc, mica, glass flake, wollastonite, and milled fiber. [7] The camera module for a multi-camera system according to [4], characterized in that the polysemi-aromatic polyamide (A2-1) contains at least one of a polymer (A2-1-1) consisting of dicarboxylic acid units (a) containing 60 to 100 mol % of terephthalic acid units and diamine units (b) containing 60 to 100 mol % of 1,9-nonanediamine units and / or 2-methyl-1,8-octanediamine units, and a polymer (A2-1-2) consisting of 10 mol % or more of isophthalic acid units relative to 100 mol % of all constituting dicarboxylic acid units. [8] A camera module for a multi-camera system according to any one of [1] to [7], characterized in that the component is at least one selected from the group consisting of a lens barrel, a lens holder, and a housing. [9] The camera module for a multi-camera system according to any one of [1] to [8], wherein the number of gates in the component is six or less.

[10] The camera module for a multi-camera system according to any one of [1] to [9], wherein the components are joined by adhesive or laser welding. [Effects of the Invention]

[0013] According to the present invention, it is possible to provide a camera module for a multi-camera system that exhibits little dimensional change, has good strength, and is capable of acquiring excellent information even under various external environmental conditions. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective cross-sectional view schematically showing an example of a camera module. [Figure 2] FIG. 1 is a perspective view illustrating the shape and dimensions of a cylindrical test piece used in Examples. [Figure 3] FIG. 1 is a perspective view illustrating the shape and dimensions of a flat test piece used in Examples. [Figure 4] FIG. 2 is a perspective cross-sectional view schematically showing a lens barrel test piece used in the examples. [Figure 5] FIG. 1 is a plan view showing an image of division of a flat test piece used in an example. [Figure 6] FIG. 2 is a perspective view schematically illustrating the state of a test piece for measuring adhesive strength. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, an embodiment of the present invention (hereinafter simply referred to as "the present embodiment") will be described in detail with reference to the drawings as necessary. The present embodiment is an example for explaining the present invention, and is not intended to limit the present invention to the following content. The present invention can be implemented by appropriately modifying it within the scope of its gist.

[0016] In this specification, the term "polyamide" refers to a polymer having an amide (-NHCO-) ​​group in the main chain.

[0017] <Camera module for multi-camera systems> The camera module for a multi-camera system of this embodiment (hereinafter sometimes simply referred to as the "camera module") is a camera module used in a multi-camera system, and includes components (hereinafter sometimes simply referred to as the "components") made of a thermoplastic resin composition. The component may or may not have a shutter, but may be any of the components constituting a camera module without a shutter as shown in FIG. 1, for example. Among these components, it is preferable to use them as the lens barrel that holds the lens, the lens holder that connects the lens barrel to the base and adjusts the distance to the light-receiving sensor and the optical axis, and the housing that covers the entire module, as shown in Figure 1.

[0018] When the component is a lens barrel or lens holder, there are no particular restrictions on its shape, but it generally has a cylindrical or rectangular tube shape in order to allow light to pass from the outside to the light-receiving sensor.

[0019] When such a cylindrical part is produced by injection molding, at least one weld will occur where the resin flow fronts meet. Welded areas are weaker than non-welded areas and can be the starting point for breakage, so reducing the number of welds is preferable from the standpoint of strength.

[0020] On-board cameras installed in automobiles are constantly subjected to vibrations while the vehicle is in motion. This vibration can cause fatigue fractures in areas with relatively low strength, such as welds. Even a crack in a weld can cause a shift in the optical axis or a change in focal length, resulting in blurred images and other problems. Since such problems can cause accidents while the vehicle is in motion, the strength of the weld is important.

[0021] On the other hand, a cylindrical shape with fewer gates results in fewer welds, but the filler orientation varies significantly within the part. This can result in filler anisotropy, which can affect the dimensions of the molded product, such as distortion. Furthermore, when joining a lens barrel and a lens holder, or a cylindrical molded part such as a lens barrel or lens holder to a housing component, as in this application, distortion occurs in the cylindrical part due to differences in shrinkage between parts. In particular, with cylindrical shapes, the circularity decreases, causing distortion in the lens, resulting in unclear captured images.

[0022] For this reason, in the case of molded parts with a cylindrical structure such as a lens barrel or lens holder, or molded products such as housings with circular holes for joining to cylindrically formed parts such as a lens barrel or lens holder, a structure in which the filler is filled from multiple gates reduces the anisotropy of the filler and reduces distortion in the molded product, so it can be said that a large number of gates is preferable.

[0023] From the viewpoint of achieving both strength and distortion (suppression of dimensional change) of the molded part, the number of gates in the part of this embodiment is preferably 1 to 6, more preferably 2 to 5, and even more preferably 3 to 4.

[0024] When the components of this embodiment are a lens barrel, a lens holder, or a housing, high circularity is preferable. The reason for this is that the better the circularity of the portion of the lens barrel into which a circular lens is fitted, the more the load on the lens is reduced. Because the outer shape of the lens barrel into which a circular lens is fitted is often cylindrical, the better the circularity of the lens holder, the less the load on the lens via the lens barrel. For the reasons mentioned above, the outer shapes of the lens barrel and lens holder are often cylindrical, so the contact portions between the housing and the lens barrel, and between the housing and the lens holder, are often circular. For this reason, the better the circularity of the housing, the more the load on the lens is reduced. The method for measuring the circularity is not particularly limited, and it can be measured, for example, by the following method. The object is attached to the rotation unit of the device, which combines a Keyence Corporation VR6200 with an electric rotation unit VR-RU2, and the three-dimensional shape of the cylindrical test piece is measured while rotating in 20-degree increments, and the roundness of the edge is measured using the attached analysis software.

[0025] Furthermore, the circularity of the circular portions of the lens barrel, lens holder, and housing is preferably 1.000 mm or less, preferably 0.600 mm or less, more preferably 0.450 mm or less, even more preferably 0.400 mm or less, and even more preferably 0.350 mm or less. The better the circularity, the less stress is applied to the lens, resulting in a distortion-free state and clearer images being obtained.

[0026] The method for incorporating the components into the multi-camera camera module of this embodiment is not particularly limited. For example, it is preferable to fix the components by adhesive or laser welding, and in particular, using an adhesive is preferable because it does not impose a thermal load on the lenses.

[0027] Furthermore, with regard to the above-mentioned parts, it is preferable that the contact points between the lens barrel and lens holder (Fig. 1: joint A), the housing and lens barrel or housing and lens holder (Fig. 1: joint B), and the housings themselves (e.g., the case and lid) have a seal structure to prevent the intrusion of rain, wind, and dust. This seal structure is not particularly limited, but is preferably a structure that sandwiches an O-ring, bonding with an adhesive, or laser welding, and is particularly preferably fixed with an adhesive or laser welding, which are less susceptible to the deterioration of components such as O-rings over time.

[0028] Here, the type of adhesive used is not particularly limited, but typical examples include acrylic adhesives, urethane adhesives, silicone adhesives, and epoxy adhesives. A combination of multiple adhesives, such as an acrylic adhesive and an epoxy adhesive, may also be used, with acrylic and epoxy adhesives being preferred, and epoxy adhesives being particularly preferred.

[0029] There is no particular limitation on whether or not the adhesive contains a filler, but it is preferable that the adhesive contains a filler so that dimensional changes are small when exposed to various environments.

[0030] The type of filler contained in the adhesive is not particularly limited, but is preferably an inorganic substance, and examples thereof include glass fiber, carbon fiber, calcium silicate fiber, potassium titanate fiber, aluminum borate fiber, glass flake, calcium carbonate, talc, kaolin, mica, hydrotalcite, zinc carbonate, calcium hydrogen phosphate, wollastonite, zeolite, boehmite, magnesium oxide, calcium silicate, sodium aluminosilicate, magnesium silicate, ketjen black, acetylene black, furnace black, carbon nanotubes, graphite, brass, copper, silver, aluminum, nickel, iron, calcium fluoride, montmorillonite, swellable fluoromica, apatite, milled fiber, and silica. Among these, silica is preferred, and shapes with small anisotropy such as polygonal or spherical shapes are particularly preferred, with spherical shapes being particularly preferred from the viewpoint of reducing dimensional changes and suppressing the anisotropy. The filler in the adhesive may be used alone or in combination of two or more.

[0031] Furthermore, the method for solidifying the adhesive is not particularly limited, but a method using UV irradiation or heating is preferred, and a combination of these may also be used. In particular, a two-step method is preferred in which, after positioning with the optical axis or the light-receiving sensor, UV irradiation is performed to temporarily fix the adhesive, and then heating is performed to completely harden the adhesive.

[0032] Furthermore, in the camera module of this embodiment, the joint between the lens barrel and the lens holder may be formed by grinding flat surfaces together or by a screw shape, and a screw shape is particularly preferable because it makes it easier for the optical axis to fall within a certain range after assembly. These shapes may also be used in combination with the above-mentioned joining method.

[0033] Furthermore, for the components in the camera module of this embodiment, the joining method for the joint between the lens holder and the base on which the optical sensor is attached (joint point C in Figure 1) is not particularly limited, but fixing with screws or using an adhesive is a preferred joining method, and either one or both joining methods may be used in combination.

[0034] Here, the type of adhesive used is not particularly limited, but typical examples include acrylic adhesives, urethane adhesives, silicone adhesives, and epoxy adhesives. A combination of multiple adhesives, such as an acrylic adhesive and an epoxy adhesive, may also be used, with acrylic and epoxy adhesives being preferred, and epoxy adhesives being particularly preferred.

[0035] The adhesive may or may not contain a filler, but it is preferable that the adhesive contains a filler so that dimensional changes are small when exposed to various environments.

[0036] The method for solidifying the adhesive is not particularly limited, but is preferably a method using UV irradiation or heating, or a combination of these. In particular, a two-step method is preferred, in which after positioning with the optical axis and light-receiving sensor, UV irradiation is used to temporarily fix the adhesive, and then heating is used to complete the process.

[0037] After evaluating the bonding strength, it is preferable that the fracture surface shows that the base material has been broken. This is proof that the object and adhesive have sufficient bonding strength, and indicates that the bonding strength exceeds the strength of the base material. This type of failure mode is a desirable failure mode because it indicates high reliability at the joint.

[0038] The laser welding is a method of joining a resin member that is transparent (also called non-absorbent or weakly absorbent) to laser light (hereinafter sometimes referred to as a "transparent resin member") and a resin member that is absorbent to laser light (hereinafter sometimes referred to as an "absorbent resin member") by contacting and welding the two resin members together.

[0039] Specifically, this method involves irradiating the joining surfaces with laser light from the transparent resin member side, and melting the absorptive resin member that forms the joining surface with the energy of the laser light to join them. Laser welding does not produce abrasion powder or burrs, and causes little damage to precision parts or products such as circuit boards inside housings. Furthermore, amorphous resin and polyamide resin themselves are materials with relatively high laser transmittance, so laser welding technology for processing products made of these resins has recently been attracting attention.

[0040] The transparent resin member is usually obtained by molding a light-transmitting resin composition, which may be either a natural color without the addition of a colorant or a resin composition containing a colorant in a range that allows the resin composition to transmit the wavelength of the laser beam used in laser welding.

[0041] The "jointed portion" joined by laser welding may be present in one or more locations within the molded part. The presence of the jointed portion is expected to have the effect of joining parts together to form a composite, or forming a sealed structure, for example.

[0042] The laser irradiation path is not particularly limited, but for example, when joining parts, it can be an open path with a start point and an end point separated from each other, and when producing a molded product with a sealed structure, it can be a closed path with an end point overlapping any point on the path (including the start point). The shape of the open path is not particularly limited and may be a straight line, a curve, or a combination thereof. The shape of the closed path is not particularly limited and can be adjusted appropriately depending on the shape of the molded product with a sealed structure.

[0043] The components in the multi-camera module of this embodiment preferably have a sealed structure joined by laser welding. More specifically, in this embodiment, there is a joint between the housing and the lens barrel, between the housing and the lens holder, and between the housings themselves, and preferably there is a joint between the housing and the lens holder.

[0044] The closed path of the parts may be one or more laps. The same path may be traced multiple times to ensure a secure bond, or the closed path may be gradually widened or narrowed to form a multi-layer structure to improve the bond strength and the safety of the sealed structure.

[0045] When joining is performed by laser welding, it is sufficient that at least the transmissive resin member and the absorbing resin member are joined, and the transmissive resin member and the absorbing resin member may be joined at two or more points each.

[0046] The type of laser used in the laser welding is not particularly limited, but the light wavelength is preferably in the range of 300 to 1200 nm, more preferably in the range of 800 to 1200 nm, and even more preferably in the range of 900 to 1100 nm.

[0047] Furthermore, the components in the multi-camera camera module of this embodiment preferably have a light transmittance of 15% or more for a light wavelength of 940 nm, more preferably 25% or more for a light wavelength of 940 nm, even more preferably 30% or more for a light wavelength of 940 nm, even more preferably 40% or more for a light wavelength of 940 nm, and most preferably 50% or more for a light wavelength of 940 nm. The higher the transmittance, the more sufficient energy is transmitted to the absorbing resin member, allowing for more efficient processing, which has the advantages of increasing the laser irradiation speed and suppressing thermal degradation of the transmitting resin member.

[0048] Furthermore, it is preferable that the light transmittance is not only high but also that there is little variation or difference in the welded portion. This contributes to uniform bonding strength of the welded portion, improving bonding quality and increasing product reliability. Large variations or differences in the transmittance of the welded portion can cause poor welding, splitting the product, and causing breakdowns due to the intrusion of water or dust.

[0049] Therefore, in the components of this embodiment, the difference between the maximum and minimum light transmittance values ​​for the light wavelength at the welded portion is preferably 20% or less, more preferably 15% or less, and even more preferably 10% or less.

[0050] The thickness of the part of this embodiment is not particularly limited, but is preferably 0.1 mm or more and 5 mm or less, more preferably 0.3 mm or more and 4 mm or less, even more preferably 0.7 mm or more and 3 mm or less, and most preferably 1.0 mm or more and 2.5 mm or less. If the thickness of the part of this embodiment is below the above lower limit, when a load is applied to the joint, the part itself will be damaged. If the thickness is below the above upper limit, the light transmittance increases and energy can be efficiently transmitted to the absorbing resin member.

[0051] The light transmittance of the part of this embodiment can be measured, for example, by the following method after obtaining a molded article by the following method. ·Acquisition of molded articles The molded article can be obtained by various processing techniques such as injection molding, extrusion molding, hot pressing, etc. Among them, injection molding is widely used in the manufacturing method of camera parts, and is therefore suitable for producing test pieces. Light transmittance measurement method The light transmittance of the molded article obtained by the above-mentioned method can be measured using a spectrophotometer. For example, the spectrophotometer can be a V670 manufactured by JASCO Corporation combined with an ILN-725 integrating sphere. Since light that passes through the resin is scattered, it is preferable to measure by collecting the scattered light using an integrating sphere.

[0052] <Multi-camera system> The multi-camera system of this embodiment includes the camera module of this embodiment described above. Here, a multi-camera system is a system that integrates information from multiple cameras. There are no particular limitations on the form of a multi-camera system as long as it is a method of integrating information from multiple cameras, but it can be classified as follows based on the installation position of the cameras: Category 1: All cameras are facing the direction of travel Category 2: Cameras are mounted facing various directions, such as front, rear, left and right, of the vehicle. Category 3: Mounted in a direction that photographs the passenger

[0053] Category 1 is a form of information processing that is mainly used while driving. It acquires information from multiple cameras with different focal lengths and viewing angles, and integrates and processes this information to predict pedestrians and obstacles, adjust the driving lane, and so on.

[0054] Category 2 is primarily used to collect and integrate peripheral information. Those mounted at the rear are often used to check behind the vehicle when parking. They can also be used to assist parking by integrating images from the front, rear, left, and right cameras to create a pseudo-bird's-eye view of the vehicle from directly above. Side mirrors and other devices that are installed to capture images to the side can be used not only for parking but also to recognize approaching people and objects such as pedestrians. Forward visibility can be used to recognize people and objects while driving, and in large vehicles such as buses and trucks, it can collect information about areas near the ground that cannot be seen from the driver's seat and can help identify children and obstacles.

[0055] Category 3 is primarily for detecting abnormalities by photographing the driver or passengers. A typical example of a camera that photographs the driver is a function that detects the driver's drowsiness and activates safety measures such as warnings or deceleration.

[0056] The cameras for the multi-camera system in categories 1 to 3 may be mounted in a single camera module, or may be installed by combining a plurality of camera modules, or may be a combination of these. Furthermore, the number of cameras is not particularly limited, and a stereo type using two cameras is acceptable, or a configuration using three or more cameras is also acceptable. Among the components constituting the camera module for a multi-camera system of this embodiment, components of this embodiment that can be used include a lens barrel, a lens holder, a housing, and the like.

[0057] The camera module for a multi-camera system according to this embodiment can be suitably used in, for example, the automotive field, mobile phones, surveillance cameras, and surveillance control systems, particularly in the automotive field and mobile phones, where the range of fluctuation in the external environment is large.

[0058] ≪Thermoplastic resin composition≫ Next, the thermoplastic resin composition constituting the components in the camera module for a multi-camera system of this embodiment will be described below. The thermoplastic resin composition contains polyphenylene ether (A1), a crystalline resin (A2), and an inorganic filler (excluding carbon fiber) (B).

[0059] (Polyphenylene ether (A1)) Examples of the polyphenylene ether (A1) include, but are not limited to, poly(2,6-dimethyl-1,4-phenylene ether), poly(2-methyl-6-ethyl-1,4-phenylene ether), poly(2-methyl-6-phenyl-1,4-phenylene ether), and poly(2,6-dichloro-1,4-phenylene ether). Further examples include polyphenylene ether copolymers such as copolymers of 2,6-dimethylphenol and other phenols (for example, the copolymer of 2,6-dimethylphenol and 2,3,6-trimethylphenol and the copolymer of 2,6-dimethylphenol and 2-methyl-6-butylphenol described in Japanese Patent Publication No. 52-017880). Among these, poly(2,6-dimethyl-1,4-phenylene ether), the copolymer of 2,6-dimethylphenol and 2,3,6-trimethylphenol, and mixtures thereof are preferred from the viewpoint of mechanical strength. These may be used alone or in combination of two or more.

[0060] The method for producing the polyphenylene ether (A1) is not particularly limited, and known methods can be used, such as those described in U.S. Pat. Nos. 3,306,874, 3,306,875, 3,257,357, and 3,257,358, and Japanese Patent Laid-Open Nos. 50-51197 and 63-152628.

[0061] The lower limit of the reduced viscosity of the polyphenylene ether (A1) (measured in a 0.5 g / dL chloroform solution at 30°C using an Ubbelohde viscometer) is preferably 0.30 dL / g or more, more preferably 0.35 dL / g or more, and even more preferably 0.38 dL / g or more. The upper limit of the reduced viscosity of the polyphenylene ether is preferably 0.80 dL / g or less, more preferably 0.75 dL / g or less, and even more preferably 0.55 dL / g or less. The combination of the lower limit and upper limit of the reduced viscosity of the polyphenylene ether is preferably 0.30 to 0.80 dL / g, more preferably 0.35 to 0.75 dL / g, and even more preferably 0.38 to 0.55 dL / g. When the reduced viscosity of the polyphenylene ether (A1) is within the above range, the impact resistance and heat resistance are further improved. The polyphenylene ether (A1) may be a mixture of two or more polyphenylene ethers having different reduced viscosities.

[0062] The polyphenylene ether (A1) may be a polyphenylene ether (A1-1) which has been completely or partially modified. The modified polyphenylene ether (A1-1) referred to here refers to a polyphenylene ether (A1-1) modified with at least one modifying compound having, in its molecular structure, at least one carbon-carbon double bond or triple bond and at least one carboxylic acid group, acid anhydride group, amino group, hydroxyl group, or glycidyl group.

[0063] Such modified materials are expected to react with the adhesive used during assembly, and are preferable from the viewpoint of bonding strength and wettability.

[0064] Examples of methods for producing the modified polyphenylene ether (A1-1) include: (1) a method in which, in the presence or absence of a radical initiator, polyphenylene ether is reacted with a modifying compound at a temperature in the range of 100°C or higher and lower than the glass transition temperature of the polyphenylene ether without melting the polyphenylene ether; (2) a method in which, in the presence or absence of a radical initiator, polyphenylene ether and a modifying compound are melt-kneaded and reacted with each other at a temperature in the range of higher than the glass transition temperature of the polyphenylene ether and lower than 360°C; and (3) a method in which, in the presence or absence of a radical initiator, polyphenylene ether is reacted with a modifying compound in a solution at a temperature lower than the glass transition temperature of the polyphenylene ether. Any of these methods may be used, but methods (1) and (2) are preferred.

[0065] Next, at least one modified compound having at least one carbon-carbon double bond or triple bond and at least one carboxylic acid group, acid anhydride group, amino group, hydroxyl group, or glycidyl group in its molecular structure will be specifically described.

[0066] Examples of the modified compound having a carbon-carbon double bond, a carboxylic acid group, and an acid anhydride group in the molecule include maleic acid, fumaric acid, chloromaleic acid, cis-4-cyclohexene-1,2-dicarboxylic acid, and acid anhydrides thereof. Fumaric acid, maleic acid, and maleic anhydride are particularly preferable, with fumaric acid and maleic anhydride being particularly preferred. Furthermore, it is also possible to use unsaturated dicarboxylic acids in which one or two of the carboxyl groups are esterified.

[0067] Examples of the modified compound having both a carbon-carbon double bond and a glycidyl group in the molecule include allyl glycidyl ether, glycidyl acrylate, glycidyl methacrylate, and epoxidized natural fats and oils. Among these, the above-mentioned modifying compound is particularly preferably glycidyl acrylate or glycidyl methacrylate.

[0068] The modified compound having both a carbon-carbon double bond and a hydroxyl group in the molecule includes compounds represented by the general formula C, such as allyl alcohol, 4-penten-1-ol, and 1,4-pentadiene-3-ol. n H 2n-3 Unsaturated alcohols of formula C n H 2n-5 O.H., C. n H 2n-7 Examples include unsaturated alcohols such as OH (n is a positive integer). The above-mentioned modifying compounds may be used alone or in combination of two or more.

[0069] The amount of the modifying compound added when producing the modified polyphenylene ether (A1-1) is preferably 0.1 to 10 parts by mass, more preferably 0.3 to 5 parts by mass, per 100 parts by mass of polyphenylene ether. When producing a modified polyphenylene ether using a radical initiator, the amount of the radical initiator is preferably 0.001 to 1 part by mass per 100 parts by mass of polyphenylene ether.

[0070] The addition rate of the modifying compound in the modified polyphenylene ether (A1-1) is preferably from 0.01 to 5% by mass, more preferably from 0.1 to 3% by mass. In the modified polyphenylene ether (A1-1), unreacted modifying compound and / or polymer of the modifying compound may remain.

[0071] To stabilize the polyphenylene ether (A1), various known stabilizers may be blended into the resin composition, such as metal stabilizers (e.g., zinc oxide, zinc sulfide, etc.) and organic stabilizers (e.g., hindered phenol stabilizers, phosphorus stabilizers, hindered amine stabilizers, etc.). The content of the stabilizer is preferably less than 5 parts by mass based on 100 parts by mass of the polyphenylene ether (A1).

[0072] The content of the polyphenylene ether (A1) in the thermoplastic resin composition is preferably 1 to 50 parts by mass, more preferably 5 to 45 parts by mass, even more preferably 10 to 40 parts by mass, still more preferably 10 to 35 parts by mass, and most preferably 10 to 30 parts by mass, relative to 100 parts by mass of the total of the polyphenylene ether (A1) and the crystalline resin (A2), or, when a styrene-based resin (A3) is contained, relative to 100 parts by mass of the total of the polyphenylene ether (A1), the crystalline resin (A2), and the styrene-based resin (A3).

[0073] (Crystalline resin (A2)) The crystalline resin (A2) is not particularly limited, but is preferably a semi-aromatic polyamide (A2-1), polyphenylene sulfide (A2-2), PAMXD6, or PAXD10, and more preferably a semi-aromatic polyamide (A2-1).

[0074] The semi-aromatic polyamide (A2-1) is a polyamide having an aromatic ring in the skeleton, and containing a diamine unit and a dicarboxylic acid unit. The semi-aromatic polyamide (A2-1) may be a single type or an alloy of multiple types.

[0075] Semi-aromatic polyamide (A2-1-1) Further, examples of the semi-aromatic polyamide (A2-1) include semi-aromatic polyamides (A2-1-1) having dicarboxylic acid units (a) containing 60 to 100 mol % of terephthalic acid units and diamine units (b) containing 60 to 100 mol % of aliphatic diamine units having 9 to 12 carbon atoms.

[0076] The dicarboxylic acid unit (a) contains 60 to 100 mol %, preferably 70 to 100 mol %, more preferably 80 to 100 mol %, and even more preferably 90 to 100 mol %, or even 100 mol % of terephthalic acid units in the unit (a). When the molar ratio is within this range, the resin composition has excellent heat resistance.

[0077] The dicarboxylic acid unit (a) may contain a dicarboxylic acid unit other than a terephthalic acid unit. Examples of such dicarboxylic acid units include, but are not limited to, units derived from aliphatic dicarboxylic acids such as malonic acid, dimethylmalonic acid, succinic acid, glutaric acid, adipic acid, 2-methyladipic acid, trimethyladipic acid, pimelic acid, 2,2-dimethylglutaric acid, 3,3-diethylsuccinic acid, azelaic acid, sebacic acid, and suberic acid; alicyclic dicarboxylic acids such as 1,3-cyclopentanedicarboxylic acid and 1,4-cyclohexanedicarboxylic acid; and aromatic dicarboxylic acids such as isophthalic acid, 2,6-naphthalenedicarboxylic acid, 2,7-naphthalenedicarboxylic acid, 1,4-naphthalenedicarboxylic acid, 1,4-phenylenedioxydiacetic acid, 1,3-phenylenedioxydiacetic acid, diphenic acid, 4,4'-oxydibenzoic acid, diphenylmethane-4,4'-dicarboxylic acid, diphenylsulfone-4,4'-dicarboxylic acid, and 4,4'-biphenyldicarboxylic acid. These units may be of one type alone or in combination of two or more types. The dicarboxylic acid units other than the terephthalic acid units may be contained in the dicarboxylic acid units (a) in an amount of 40 mol% or less, more preferably 30 mol% or less, even more preferably 20 mol% or less, still more preferably 10 mol% or less, and may even be 0 mol%.

[0078] The diamine units (b) contain 60 to 100 mol %, preferably 70 to 100 mol %, more preferably 80 to 100 mol %, and even more preferably 90 to 100 mol %, or may contain 100 mol %, of aliphatic diamine units having a carbon number of 9 to 12. When the carbon number and the molar ratio of the diamine units are within the above ranges, a resin composition having an excellent balance between low water absorption and heat resistance is obtained.

[0079] From the viewpoint of excellent dimensional stability in high temperature and humid environments, the diamine unit (b) is preferably an aliphatic diamine unit having 8 to 12 carbon atoms, more preferably an aliphatic diamine unit having 9 to 10 carbon atoms. Furthermore, from the viewpoint of reactivity with adhesives used during assembly, an aliphatic diamine unit having 8 to 10 carbon atoms is preferred, more preferably an aliphatic diamine unit having 9 to 10 carbon atoms, and most preferably an aliphatic diamine unit having 9 carbon atoms. The diamine unit (b) may be linear or branched.

[0080] Examples of the linear aliphatic diamine constituting the diamine unit (b) include, but are not limited to, 1,9-nonanediamine (also called nonamethylenediamine), decamethylenediamine, undecamethylenediamine, and dodecamethylenediamine.

[0081] Examples of aliphatic diamines constituting the aliphatic diamine unit having a substituent branched from the main chain that constitutes the diamine unit (b) include, but are not limited to, 2,2,4-trimethylhexamethylenediamine, 2,4,4-trimethylhexamethylenediamine, 2-methyl-1,8-octanediamine (also referred to as 2-methyloctamethylenediamine), and 2,4-dimethyloctamethylenediamine.

[0082] Furthermore, it is preferable that the diamine unit (b) contains a 1,9-nonanediamine unit and / or a 2-methyl-1,8-octanediamine unit from the viewpoint of a balance between mechanical strength, low water absorption, and heat resistance. In particular, it is preferable to use a combination of a 1,9-nonanediamine unit and a 2-methyl-1,8-octanediamine unit.

[0083] Furthermore, when the diamine units (b) contain 1,9-nonanediamine units and / or 2-methyl-1,8-octanediamine units, the molar ratio of the 1,9-nonanediamine units to the 2-methyl-1,8-octanediamine units (1,9-nonanediamine units / 2-methyl-1,8-octanediamine units) is preferably in the range of 100 / 0 to 20 / 80. The molar ratio is more preferably 95 / 5 to 60 / 40, and even more preferably 90 / 10 to 75 / 25. When the molar ratio is in this range, the resulting resin composition tends to have excellent heat resistance and low water absorption.

[0084] The diamine unit (b) may contain a diamine unit other than an aliphatic diamine unit having a carbon number of 9 to 12. Examples of such diamine units include, but are not limited to, units derived from aliphatic diamines such as ethylenediamine, propylenediamine, tetramethylenediamine, pentamethylenediamine, hexamethylenediamine, heptamethylenediamine, octamethylenediamine, and 2-methylpentamethylenediamine (also referred to as 2-methyl-1,5-diaminopentane); alicyclic diamines such as 1,4-cyclohexanediamine, 1,3-cyclohexanediamine, and 1,3-cyclopentanediamine; and aromatic diamines such as metaxylylenediamine. These units may be of one type alone or in combination of two or more types. The diamine units other than the above-mentioned aliphatic diamine units having 9 to 12 carbon atoms may be contained in the diamine units (b) in an amount of 40 mol % or less, more preferably 30 mol % or less, even more preferably 20 mol % or less, still more preferably 10 mol % or less, and may even be 0 mol %.

[0085] Preferred examples of the semi-aromatic polyamide (A2-1-1) of this embodiment include polyamide 9,T, polyamide 10,T, and the like.

[0086] Furthermore, the semi-aromatic polyamide (A2-1-1) may contain, within the scope of the present embodiment, lactam units such as butyrolactam, pivalolactam, ε-caprolactam, caprylolactam, enantholactam, and undecanolactam; aminocarboxylic acid units such as 6-aminocaproic acid, 11-aminoundecanoic acid, and 12-aminododecanoic acid; trivalent or higher polyvalent amine units such as bishexamethylenetriamine; and trivalent or higher polyvalent carboxylic acid units such as trimellitic acid, trimesic acid, and pyromellitic acid. These units may be of one type alone or in combination of two or more types. The total proportion (mol %) of these units in the semi-aromatic polyamide (A2-1-1) is preferably 20 mol % or less, more preferably 10 mol % or less, and even more preferably 5 mol % or less, based on the entire semi-aromatic polyamide (A2-1), and may be 0 mol %.

[0087] Semi-aromatic polyamide (A2-1-2) The semi-aromatic polyamide (A2-1) may also be a semi-aromatic polyamide (A2-1-2) having dicarboxylic acid units (c) containing 60 to 100 mol % of isophthalic acid units and diamine units (d) containing 80 to 100 mol % of aliphatic diamine units having 4 to 10 carbon atoms.

[0088] The dicarboxylic acid unit (c) contains isophthalic acid units in an amount of 60 to 100 mol %, preferably 70 to 100 mol %, more preferably 75 to 100 mol %, even more preferably 80 to 100 mol %, still more preferably 90 to 100 mol %, and particularly preferably 100 mol %. When the molar ratio is within this range, the resin composition has excellent dimensional accuracy and weld strength.

[0089] The dicarboxylic acid unit (c) may contain a dicarboxylic acid unit other than an isophthalic acid unit. Examples of such dicarboxylic acid units other than isophthalic acid units include, but are not limited to, units derived from aliphatic dicarboxylic acids such as malonic acid, dimethylmalonic acid, succinic acid, glutaric acid, adipic acid, 2-methyladipic acid, trimethyladipic acid, pimelic acid, 2,2-dimethylglutaric acid, 3,3-diethylsuccinic acid, azelaic acid, sebacic acid, and suberic acid; alicyclic dicarboxylic acids such as 1,3-cyclopentanedicarboxylic acid and 1,4-cyclohexanedicarboxylic acid; and aromatic dicarboxylic acids such as terephthalic acid, 2,6-naphthalenedicarboxylic acid, 2,7-naphthalenedicarboxylic acid, 1,4-naphthalenedicarboxylic acid, 1,4-phenylenedioxydiacetic acid, 1,3-phenylenedioxydiacetic acid, diphenic acid, 4,4'-oxydibenzoic acid, diphenylmethane-4,4'-dicarboxylic acid, diphenylsulfone-4,4'-dicarboxylic acid, and 4,4'-biphenyldicarboxylic acid. These units may be of one type alone or in combination of two or more types. The dicarboxylic acid units other than the isophthalic acid units may be contained in the dicarboxylic acid units (c) in an amount of 40 mol% or less, more preferably 30 mol% or less, even more preferably 25 mol% or less, still more preferably 20 mol% or less, particularly preferably 10 mol% or less, and most preferably 0 mol%.

[0090] The molar proportion of the dicarboxylic acid unit (c) in the semi-aromatic polyamide (A2-1-2) is preferably 40 to 60 mol % relative to 100 mol % of the semi-aromatic polyamide (A2-1-2).

[0091] The diamine units (d) contain 80 to 100 mol %, preferably 90 to 100 mol %, and more preferably 100 mol % of aliphatic diamine units having a carbon number of 4 to 10. When the molar ratio is within this range, the resin composition has excellent mechanical properties such as impact resistance and tensile elongation.

[0092] The diamine unit (d) is preferably an aliphatic diamine unit having 4 to 6 carbon atoms, more preferably an aliphatic diamine unit having 6 carbon atoms, from the viewpoint of achieving even better mechanical strength at high temperatures. The diamine unit (d) may be linear or branched.

[0093] Examples of the linear aliphatic diamine constituting the diamine unit (d) include, but are not limited to, tetramethylenediamine, pentamethylenediamine, hexamethylenediamine, heptamethylenediamine, octamethylenediamine, 1,9-nonanediamine, and decamethylenediamine.

[0094] Examples of aliphatic diamines constituting the aliphatic diamine unit having a substituent branched from the main chain that constitutes the diamine unit (d) include, but are not limited to, 2-methylpentamethylenediamine (also referred to as 2-methyl-1,5-diaminopentane), 2,2,4-trimethylhexamethylenediamine, 2,4,4-trimethylhexamethylenediamine, 2-methyl-1,8-octanediamine (also referred to as 2-methyloctamethylenediamine), and 2,4-dimethyloctamethylenediamine.

[0095] Of the above, the diamine unit (d) preferably contains a hexamethylenediamine unit.

[0096] The diamine unit (d) may contain a diamine unit other than an aliphatic diamine unit having a carbon number of 4 to 10. Examples of such diamine units include, but are not limited to, units derived from aliphatic diamines such as ethylenediamine, propylenediamine, undecamethylenediamine, and dodecamethylenediamine; alicyclic diamines such as 1,4-cyclohexanediamine, 1,3-cyclohexanediamine, and 1,3-cyclopentanediamine; and aromatic diamines such as metaxylylenediamine. These units may be of one type alone or in combination of two or more types. The diamine units other than the above aliphatic diamine units having 4 to 10 carbon atoms may be contained in the diamine units (d) in an amount of 20 mol % or less, preferably 10 mol % or less, and more preferably 0 mol %.

[0097] The molar proportion of the diamine unit (d) in the semi-aromatic polyamide (A2-1-2) is preferably 40 to 60 mol % relative to 100 mol % of the semi-aromatic polyamide (A2-1-2).

[0098] Preferred examples of the semi-aromatic polyamide (A2-1-2) include polyamide 6,I, polyamide 6,I / 6,T, polyamide 6,I / 6,6, etc. Such examples are expected to have excellent weather resistance and further improved appearance properties.

[0099] Furthermore, the semi-aromatic polyamide (A2-1-2) may contain, within the scope of the present embodiment, lactam units such as butyrolactam, pivalolactam, ε-caprolactam, caprylolactam, enantholactam, and undecanolactam; aminocarboxylic acid units such as 6-aminocaproic acid, 11-aminoundecanoic acid, and 12-aminododecanoic acid; trivalent or higher polyvalent amine units such as bishexamethylenetriamine; and trivalent or higher polyvalent carboxylic acid units such as trimellitic acid, trimesic acid, and pyromellitic acid. These units may be of one type alone or in combination of two or more types. The total proportion (mol %) of these units in the semi-aromatic polyamide (A2-1-2) is preferably 20 mol % or less, more preferably 10 mol % or less, and even more preferably 5 mol % or less, based on the entire polyamide.

[0100] In this embodiment, the weight average molecular weight (hereinafter sometimes referred to as Mw) of the semi-aromatic polyamide (A2-1-2) is preferably 10,000 to 50,000, more preferably 15,000 to 45,000, even more preferably 15,000 to 35,000, still more preferably 20,000 to 40,000, and particularly preferably 25,000 to 35,000. When the Mw of component (B) is within this range, the component (B) exhibits excellent mechanical strength and weld strength at high temperatures. The Mw can be measured using GPC (gel permeation chromatography) as described in the Examples below.

[0101] In the thermoplastic resin composition, the content of the semi-aromatic polyamide (A2-1-1) is preferably 20 to 90 parts by mass, more preferably 30 to 80 parts by mass, and even more preferably 40 to 75 parts by mass, per 100 parts by mass of the polyphenylene ether (A1) and the crystalline resin (A2), or, if the styrene-based resin (A3) is included, per 100 parts by mass of the polyphenylene ether (A1), the crystalline resin (A2), and the styrene-based resin (A3). When the content of the semi-aromatic polyamide (A2-1-1) is within this range, a resin excellent in mechanical strength, low water absorbency, dimensional accuracy, and weld strength can be obtained.

[0102] In the thermoplastic resin composition, the content of the semi-aromatic polyamide (A2-1-2) is preferably 5 to 50 parts by mass, more preferably 10 to 40 parts by mass, and even more preferably 15 to 30 parts by mass, per 100 parts by mass of the polyphenylene ether (A1) and the crystalline resin (A2), or, if a styrene-based resin (A3) is included, per 100 parts by mass of the polyphenylene ether (A1), the crystalline resin (A2), and the styrene-based resin (A3). When the content of component (A) is within this range, a resin composition excellent in mechanical strength and dimensional stability under various environments can be obtained.

[0103] The polyphenylene sulfide (A2-2) has a resin structure having a repeating unit in which an aromatic ring and a sulfur atom are bonded, and specifically, the polyphenylene sulfide (A2-2) has a resin structure represented by the following general formula (1): [ka] (wherein R1 and R2 each independently represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, a nitro group, an amino group, a phenyl group, a methoxy group, or an ethoxy group), and, if necessary, a structural portion represented by the following general formula (2): [ka] The resin has a trifunctional structural moiety represented by formula (2) and a repeating unit represented by formula (3). The trifunctional structural moiety represented by formula (2) is preferably present in an amount of 0.001 to 3 mol %, and particularly preferably in an amount of 0.01 to 1 mol %, based on the total number of moles of the trifunctional structural moiety and other structural moieties.

[0104] Here, the structural moiety represented by the above general formula (1), particularly R1 and R2 in the formula, are preferably hydrogen atoms from the viewpoint of the mechanical strength of the polyphenylene sulfide (A2-2). In this case, examples include those bonded at the para position represented by the following formula (3) and those bonded at the meta position represented by the following formula (4). [ka] Among these, a structure in which the bond between the sulfur atom and the aromatic ring in the repeating unit is at the para position, as represented by the general formula (3), is particularly preferred in terms of heat resistance and crystallinity of the polyphenylene sulfide (A2-2).

[0105] The polyphenylene sulfide (A2-2) may contain not only the structural moieties represented by the general formulas (1) and (2) but also the structural moieties represented by the following structural formulas (5) to (8): [ka] The structural moieties represented by the general formulas (1) and (2) may account for 30 mol % or less of the total of the structural moieties represented by the general formulas (1) and (2). In particular, in the present invention, it is preferred that the structural moieties represented by the general formulas (5) to (8) account for 10 mol % or less from the viewpoint of the heat resistance and mechanical strength of the polyarylene sulfide resin. When the polyphenylene sulfide (A2-2) contains the structural moieties represented by the general formulas (5) to (8), the bonding mode thereof may be either a random copolymer or a block copolymer.

[0106] The polyphenylene sulfide (A2-2) may have naphthyl sulfide bonds or the like in its molecular structure, but the amount of such bonds is preferably 3 mol % or less, and particularly preferably 1 mol % or less, based on the total number of moles including other structural moieties.

[0107] The physical properties of the polyphenylene sulfide (A2-2) are not particularly limited as long as they do not impair the effects of the present invention, but are as follows.

[0108] The polyphenylene sulfide (A2-2) preferably has a melt viscosity (V6) measured at 300°C in the range of 2 to 1000 [Pa·s], more preferably in the range of 10 to 500 [Pa·s], and particularly preferably in the range of 60 to 200 [Pa·s], in order to obtain a good balance between fluidity and mechanical strength. However, in the present invention, the melt viscosity (V6) is measured by measuring the melt viscosity of the polyphenylene sulfide (A2-2) at 300°C with a flow tester, CFT-500D, manufactured by Shimadzu Corporation, under a load of 1.96 × 10 6 The melt viscosity is measured after holding the sample for 6 minutes at a pressure of 1 Pa and L / D=10 (mm) / 1 (mm).

[0109] The non-Newtonian index of the polyphenylene sulfide (A2-2) is not particularly limited as long as it does not impair the effects of the present invention, but is preferably in the range of 0.90 to 2.00. When a linear polyphenylene sulfide is used, the non-Newtonian index is preferably in the range of 0.90 to 1.50, and more preferably in the range of 0.95 to 1.20. Such polyphenylene sulfide (A2-2) has excellent mechanical properties, fluidity, and abrasion resistance. The non-Newtonian index (N value) is a value calculated using the following formula after measuring the shear rate and shear stress using a capillograph at 300°C under conditions where the ratio of the orifice length (L) to the orifice diameter (D) is L / D=40.

number

[0110] The method for producing the polyphenylene sulfide (A2-2) is not particularly limited, but examples thereof include: 1) a method in which a dihalogenoaromatic compound is polymerized in the presence of sulfur and sodium carbonate, and if necessary, a polyhalogenoaromatic compound or other copolymerization component is added; 2) a method in which a dihalogenoaromatic compound is polymerized in a polar solvent in the presence of a sulfidizing agent, and if necessary, a polyhalogenoaromatic compound or other copolymerization component is added; and 3) a method in which p-chlorothiophenol is polymerized in the presence of other copolymerization components, and if necessary, other copolymerization component is added, and then the mixture is self-condensed. Of these methods, method 2) is preferred because it is widely used. During the reaction, an alkali metal salt of a carboxylic acid or sulfonic acid or an alkali hydroxide may be added to adjust the degree of polymerization. Among the above-mentioned 2) methods, there are also those which produce polyphenylene sulfide by introducing a water-containing sulfidizing agent into a mixture containing a heated organic polar solvent and a dihalogeno aromatic compound at a rate at which water can be removed from the reaction mixture, and then adding the dihalogeno aromatic compound and the sulfidizing agent, and optionally a polyhalogeno aromatic compound, in the organic polar solvent to react with each other, and controlling the amount of water in the reaction system to be in the range of 0.02 to 0.5 moles per mole of the organic polar solvent (see JP-A-07-228699), and those which produce solid In particular, it is preferred to use a method in which a dihalogenoaromatic compound and, if necessary, a polyhalogenoaromatic compound or other copolymerization component are added in the presence of an alkali metal sulfide and an aprotic polar organic solvent, and the alkali metal hydrosulfide and the alkali metal salt of an organic acid are reacted while controlling the amount of the alkali metal salt of an organic acid in the range of 0.01 to 0.9 mol per mol of the sulfur source and the amount of water in the reaction system to 0.02 mol or less per mol of the aprotic polar organic solvent (see WO2010 / 058713 pamphlet).Specific examples of dihalogenoaromatic compounds include p-dihalobenzene, m-dihalobenzene, o-dihalobenzene, 2,5-dihalotoluene, 1,4-dihalonaphthalene, 1-methoxy-2,5-dihalobenzene, 4,4'-dihalobiphenyl, 3,5-dihalobenzoic acid, 2,4-dihalobenzoic acid, 2,5-dihalonitrobenzene, 2,4-dihalonitrobenzene, 2,4-dihaloanisole, p,p'-dihalodiphenyl ether, 4,4'-dihalobenzophenone, 4,4'-di Examples of the polyhalogenoaromatic compounds include 1,2,3-trihalobenzene, 1,2,4-trihalobenzene, 1,3,5-trihalobenzene, 1,2,3,5-tetrahalobenzene, 1,2,4,5-tetrahalobenzene, 1,4,6-trihalonaphthalene, etc. The halogen atoms contained in the above compounds are preferably chlorine atoms or bromine atoms.

[0111] The method for post-treating the reaction mixture containing polyphenylene sulfide (A2-2) obtained by the polymerization step is not particularly limited, and examples thereof include: (1) after the polymerization reaction is completed, first, the solvent is distilled off under reduced pressure or normal pressure from the reaction mixture as is or after adding an acid or base, and then the solid obtained after the solvent distillation is washed once or twice or more times with a solvent such as water, the reaction solvent (or an organic solvent having a similar solubility to the low-molecular-weight polymer), acetone, methyl ethyl ketone, or alcohols, followed by neutralization, washing with water, filtration, and drying; or (2) after the polymerization reaction is completed, the reaction mixture is diluted with a solvent such as water, acetone, methyl ethyl ketone, alcohols, ethers, halogenated hydrocarbons, aromatic hydrocarbons, or aliphatic hydrocarbons (a solvent soluble in the polymerization solvent used and capable of dissolving at least polyphenylene sulfide). (3) after the polymerization reaction is completed, the reaction mixture is added with a reaction solvent (or an organic solvent having equivalent solubility to the low molecular weight polymer) and stirred, and the mixture is filtered to remove the low molecular weight polymer. The mixture is then washed once or twice or more times with a solvent such as water, acetone, methyl ethyl ketone, or an alcohol, followed by neutralization, washing with water, filtration, and drying; (4) after the polymerization reaction is completed, the reaction mixture is added with water, washed with water, filtered, and if necessary, acid is added during the water washing step to perform an acid treatment, followed by drying; and (5) after the polymerization reaction is completed, the reaction mixture is filtered, and if necessary, washed once or twice or more times with the reaction solvent, followed by further washing with water, filtration, and drying.

[0112] In the post-treatment methods exemplified above in (1) to (5), the polyphenylene sulfide (A2-2) may be dried in vacuum, in air, or in an inert gas atmosphere such as nitrogen.

[0113] In the thermoplastic resin composition, the content of the polyphenylene sulfide (A2-2) is preferably 20 to 90 parts by mass, more preferably 30 to 80 parts by mass, and even more preferably 40 to 75 parts by mass, per 100 parts by mass of the polyphenylene ether (A1) and the crystalline resin (A2), or, if a styrene-based resin (A3) is included, per 100 parts by mass of the polyphenylene ether (A1), the crystalline resin (A2), and the styrene-based resin (A3). When the content of polyphenylene sulfide (A2-2) is within this range, a resin excellent in mechanical strength, low water absorbency, dimensional accuracy, and weld strength can be obtained.

[0114] (styrene-based resin (A3)) The thermoplastic resin composition preferably further contains a styrene-based resin (A3) in addition to the polyphenylene ether (A1), the crystalline resin (A2), and the inorganic filler (excluding carbon fiber) (B) described above. Examples of the styrene-based resin (A3) include, but are not limited to, a homopolymer of a styrene-based compound, a copolymer of two or more styrene-based compounds, and a polymer obtained by polymerizing a styrene-based compound and a compound copolymerizable with the styrene-based compound in the presence of a rubber polymer. Examples of the styrene-based compound include styrene, α-methylstyrene, 2,4-dimethylstyrene, monochlorostyrene, p-methylstyrene, p-tert-butylstyrene, α-ethylstyrene, and syndiotactic polystyrene (SPS). The styrene-based resin (A3) is preferably a homopolymer of styrene, more preferably a homopolymer of styrene that does not have stereoregularity (syndiotactic structure).

[0115] In the thermoplastic resin composition, the content of the styrene-based resin (A3) is preferably 0.5 to 20 parts by mass, more preferably 1 to 15 parts by mass, and even more preferably 5 to 13 parts by mass, relative to 100 parts by mass of the total of the polyphenylene ether (A1), the crystalline resin (A2), and the styrene-based resin (A3).

[0116] In addition, in the thermoplastic resin composition, the mass part ratio of the polyphenylene ether (A1) to the styrene-based resin (A3) (polyphenylene ether (A1) / styrene-based resin (A3)) is preferably 1 to 3, more preferably 1 to 2, and even more preferably 1 to 1.5. By setting the polyphenylene ether (A1) / styrene-based resin (A3) ratio within the above range, photodegradation and a decrease in glass transition temperature of the particles composed of the polyphenylene ether (A1) and the styrene-based resin (A3) dispersed in the crystalline resin (A2) can be suppressed, and a good balance between weather resistance and mechanical properties can be obtained.

[0117] (Filler (B)) The thermoplastic resin composition further contains an inorganic filler (B) other than carbon fiber in addition to the above-mentioned thermoplastic resins. By containing the filler (B), the resin composition can be made to have better mechanical properties such as toughness and rigidity.

[0118] The filler (B) is not particularly limited, and examples thereof include glass fiber, calcium silicate fiber, potassium titanate fiber, aluminum borate fiber, glass flake, calcium carbonate, talc, kaolin, mica, hydrotalcite, zinc carbonate, calcium hydrogen phosphate, wollastonite, zeolite, boehmite, magnesium oxide, calcium silicate, sodium aluminosilicate, magnesium silicate, ketjen black, acetylene black, furnace black, carbon nanotubes, graphite, brass, copper, silver, aluminum, nickel, iron, calcium fluoride, montmorillonite, swellable fluoromica, apatite, and milled fiber.

[0119] These fillers (B) may be used singly or in combination of two or more. Among these, from the viewpoint of rigidity, strength, etc., it is preferable to use glass fiber, glass flake, talc, kaolin, mica, calcium hydrogen phosphate, wollastonite, carbon nanotubes, graphite, calcium fluoride, montmorillonite, swellable fluoromica, or apatite as the filler (B).

[0120] The filler (B) is more preferably one or more selected from the group consisting of glass fiber, calcium carbonate, glass flake, talc, mica, wollastonite, and milled fiber, further preferably glass fiber or talc, glass flake, or milled fiber, particularly preferably glass fiber or glass flake, and most preferably glass fiber.

[0121] When the filler (B) is a glass fiber, the number average fiber diameter (d1) is preferably 3 μm or more and 30 μm or less. The weight average fiber length (L) is preferably 100 μm or more and 5 mm or less. Furthermore, the aspect ratio ((L) / (d1)) of the number average fiber diameter (D1) to the weight average fiber length (L) is preferably 10 or more and 100 or less. By using glass fibers with the above configuration, better properties can be achieved.

[0122] When the filler (B) is a glass fiber, the number average fiber diameter (d1) is preferably 3 μm or more and 30 μm or less, the weight average fiber length (L) is preferably 103 μm or more and 5 mm or less, and the aspect ratio ((L) / (d1)) is preferably 3 or more and 100 or less.

[0123] The number average fiber diameter and weight average fiber length of the filler (B) can be measured by the following method. First, the molded article is dissolved in a solvent such as formic acid that dissolves the thermoplastic resin (A), and then, for example, 100 or more fillers (B) are arbitrarily selected from the resulting insoluble components. Next, the filler (B) is observed with an optical microscope, a scanning electron microscope, or the like, and the number-average fiber diameter can be determined by dividing the total measured fiber diameter by the number of measured fillers (B). Alternatively, the weight-average fiber length can be determined by dividing the total measured fiber length by the total weight of the measured fillers (B).

[0124] The content of the filler (B) in the thermoplastic resin composition is preferably 10.0 parts by mass or more and 150.0 parts by mass or less, more preferably 30.0 parts by mass or more and 140.0 parts by mass or less, still more preferably 50.0 parts by mass or more and 130.0 parts by mass or less, particularly preferably 55.0 parts by mass or more and 125.0 parts by mass or less, and most preferably 60.0 parts by mass or more and 120 parts by mass or less, relative to 100 parts by mass of the polyphenylene ether (A1) and the crystalline resin (A2), or, when a styrene-based resin (A3) is contained, relative to 100 parts by mass of the polyphenylene ether (A1), the crystalline resin (A2), and the styrene-based resin (A3). When the content of the filler (B) is equal to or greater than the lower limit, the strength and dimensional accuracy of the molded article tend to be improved, whereas when the content of the filler (B) is equal to or less than the upper limit, the molded article tends to have better surface appearance and better laser transmittance in laser welding. In particular, when the filler (B) is a glass fiber and the content of the filler (B) is within the above range relative to 100 parts by mass of the total of the polyphenylene ether (A1), the crystalline resin (A2), and the styrene-based resin (A3), the part of this embodiment tends to have further improved mechanical properties such as strength and dimensional accuracy.

[0125] (Compatibilizer (D)) In order to improve the compatibility between the polyphenylene ether (A1) and the crystalline resin (A2), the resin composition of the present embodiment preferably further contains a compatibilizer (D). Use of the compatibilizer (D) can improve the physical properties of the mixture of the polyamide and the polyphenylene ether.

[0126] Here, the compatibilizer (D) refers to a polyfunctional compound that interacts with polyphenylene ether, polyamide, or both. Such interaction may be chemical (e.g., grafting) or physical (e.g., changing the surface properties of the dispersed phase). In either case, the compatibility of the resulting mixture of polyamide and polyphenylene ether is improved.

[0127] Examples of the compatibilizer (D) include those described in JP-A-8-48869 and JP-A-9-124926, and all of these known compatibilizers can be used, and two or more of them can also be used in combination. Among the various compatibilizers (D) described above, one or more selected from the group consisting of citric acid, maleic acid, itaconic acid, and anhydrides thereof are preferred, and among these, it is more preferred to use maleic anhydride and / or citric acid.

[0128] The content of the compatibilizer (D) is preferably 0.01 to 10 parts by mass, more preferably 0.10 to 5 parts by mass, and even more preferably 0.10 to 2 parts by mass, per 100 parts by mass of the polyphenylene ether (A1) and the crystalline resin (A2) in total, or per 100 parts by mass of the polyphenylene ether (A1), the crystalline resin (A2), and the styrene-based resin (A3) in total, in the case where the styrene-based resin (A3) is contained.

[0129] (Colorant (E)) The thermoplastic resin composition may further contain a colorant (E) in addition to the above-mentioned components. As the colorant (E), a commonly used colorant can be blended, and the resin composition can be colored in any color tone from black to pale colors.

[0130] When the colorant (E) is used, it is added to improve weather resistance and to cope with laser welding processing, for example.

[0131] An example of a colorant for improving weather resistance is carbon black (E-1). The carbon black (E-1) is blended as a component for imparting black coloration and improving weather resistance.

[0132] The carbon black (E-1) has an average primary particle size of 20 nm or less, preferably 5 to 20 nm, and more preferably 10 to 20 nm. From the viewpoint of weather resistance, it is preferably 20 nm or less, and from the viewpoints of dispersibility in a resin composition and color unevenness of a molded product, it is preferably 5 nm or more. The average primary particle size can be measured using an electron microscope, specifically by the method described in the examples.

[0133] The carbon black (E-1) may be used alone or in combination of two or more types having different average primary particle sizes. Alternatively, a master batch prepared by pre-kneading the carbon black with polystyrene may be used.

[0134] In the thermoplastic resin composition, the content of the carbon black (E-1) is preferably 0.02 to 7 parts by mass, more preferably 0.05 to 5 parts by mass, even more preferably 0.10 to 3 parts by mass, even more preferably 0.20 to 1 part by mass, and particularly preferably 0.30 to 0.80 parts by mass, per 100 parts by mass of the polyphenylene ether (A1) and the crystalline resin (A2), or per 100 parts by mass of the polyphenylene ether (A1), the crystalline resin (A2), and the styrene-based resin (A3) in the case where the thermoplastic resin composition contains the styrene-based resin (A3). From the viewpoint of weather resistance, the content is preferably 0.02 parts by mass or more, and from the viewpoint of mechanical properties, the content is preferably 7 parts by mass or less.

[0135] Next, coloring for laser welding will be described. The primary role of coloring in the laser welding process is to absorb the laser and melt the resin by generating heat. The colorant (E-2) for absorbing the laser is added to the resin that absorbs the laser, i.e., the resin composition that forms the laser-absorbing resin member.

[0136] Another role of the coloring agent is to transmit the laser, allowing the light beam to pass through to the resin on the side that has the desired color and absorbs the laser. This laser-transmitting coloring agent (E-3) is added to the resin on the side that transmits the laser, i.e., the resin composition that forms the laser-transmitting resin member.

[0137] The colorant (E-2) for absorbing the laser during laser welding can be either an inorganic or organic material, as long as it is a laser-absorbing colorant. Examples of such colorants include carbon black (acetylene black, lamp black, thermal black, furnace black, channel black, ketjen black, gas black, oil black, etc.), graphite, titanium black, and black iron oxide. Among these, carbon black (E-1) is preferred in terms of dispersibility, color development, cost, etc. These colorants can be used alone or in combination.

[0138] Examples of non-black pigments as the colorant (E-2) include various inorganic pigments and organic pigments described below. These non-black pigments can be used alone or in combination.

[0139] Examples of inorganic pigments as the colorant (E-2) include white pigments such as calcium carbonate, titanium oxide, zinc oxide, and zinc sulfide; yellow pigments such as cadmium yellow, yellow lead, titanium yellow, zinc chromate, yellow ochre, and yellow iron oxide; red pigments such as red pigments, umber, red iron oxide, and cadmium red; blue pigments such as iron blue, ultramarine, and cobalt blue; and green pigments such as chrome green.

[0140] Examples of the colorant (E-2) organic pigment include azo-based, azomethine-based, methine-based, indanthrone-based, anthraquinone-based, pyranthrone-based, flavanthrone-based, benzenethrone-based, phthalocyanine-based, quinophthalone-based, perylene-based, perinone-based, dioxazine-based, thioindigo-based, isoindolinone-based, isoindoline-based, pyrrulepyrrole-based, and quinacridone-based pigments.

[0141] The content of the colorant (E-2) for absorbing the laser during laser welding is preferably 0.001 to 5.00 parts by mass, more preferably 0.005 to 2.5 parts by mass, and even more preferably 0.01 to 1.00 parts by mass, per 100 parts by mass of the polyphenylene ether (A1) and the crystalline resin (A2), or per 100 parts by mass of the polyphenylene ether (A1), the crystalline resin (A2), and the styrene-based resin (A3) when the styrene-based resin (A3) is included. By having the content of the colorant (E-2) equal to or greater than the lower limit, the efficiency of laser heating is improved, the effects of thermal degradation of the resin are suppressed, and melting can be achieved in a short time. On the other hand, by having the content of the colorant (E-2) equal to or less than the upper limit, excessive heat generation can be suppressed, thereby more effectively preventing carbonization of the resin.

[0142] The laser-transmitting colorant (E-3) may be any organic material that transmits the laser during laser welding. Examples of such colorants include eBIMD® ACW® 9871, eBIND® LTW® 8250, and eBIND® LTW® 8701H, which are colorants manufactured by Orient Chemical Industry Co., Ltd. In addition, a black colorant obtained by mixing two or more chromatic colorants may also be used.

[0143] The content of the laser-transmitting colorant (E-3) is preferably 0.001 to 10,000 parts by mass, more preferably 0.010 to 8,000 parts by mass, and even more preferably 0.05 to 6,000 parts by mass, per 100 parts by mass of the polyphenylene ether (A1) and the crystalline resin (A2) combined, or, if a styrene-based resin (A3) is included, per 100 parts by mass of the polyphenylene ether (A1), the crystalline resin (A2), and the styrene-based resin (A3) combined. By ensuring that the content of the colorant (E-3) is equal to or greater than the lower limit, a desired color can be achieved. On the other hand, by ensuring that the content of the colorant (E-3) is equal to or less than the upper limit, laser transmission inhibition is suppressed, energy is efficiently transferred to the absorbing material, and thermal degradation of the absorbing resin can be effectively prevented.

[0144] (Other additives) The thermoplastic resin composition may further contain other additives in addition to the above-mentioned components. Examples of the other additives include other thermoplastic resins such as polyesters and polyolefins, plasticizers (low-molecular-weight polyolefins, polyethylene glycol, fatty acid esters, etc.), antistatic agents, nucleating agents, flow improvers, anti-dripping agents, reinforcing agents, various peroxides, spreading agents, organic heat stabilizers such as copper-based heat stabilizers and hindered phenol-based antioxidants, antioxidants, ultraviolet absorbers, and light stabilizers.

[0145] The specific preferred amounts of the other additive components added are not particularly limited, but are each 15% by mass or less, more preferably 13% by mass or less, and even more preferably 10% by mass or less, when the entire resin composition is 100% by mass. Furthermore, the total amount of other additive components is preferably 30% by mass or less, more preferably 25% by mass or less, and even more preferably 20% by mass or less, when the entire resin composition is taken as 100% by mass.

[0146] Furthermore, the total content of the polyphenylene ether (A1) and the crystalline resin (A2), or, when the styrene-based resin (A3) is contained, the total content of the polyphenylene ether (A1), the crystalline resin (A2) and the styrene-based resin (A3), relative to 100 parts by mass of the thermoplastic resin composition, is preferably 20 to 90 parts by mass, more preferably 30 to 80 parts by mass, and even more preferably 45 to 65 parts by mass.

[0147] In the component of the camera module for a multi-camera system of this embodiment, the thermoplastic resin composition has a glass transition temperature of 110°C or higher and a melting point of 275°C or higher.

[0148] The glass transition temperature Tg refers to the peak-top temperature at which the storage modulus drops significantly and the loss modulus reaches its maximum when measured using a dynamic viscoelasticity measuring device at a heating rate of 2°C / min from 23°C and an applied frequency of 10 Hz. When two or more loss modulus peaks appear, the glass transition temperature Tg refers to the peak-top temperature of the highest peak. In order to improve measurement accuracy, the measurement frequency should be at least once every 20 seconds. There are no particular restrictions on the method for preparing the measurement sample, but it is desirable to use a cut-out piece of a hot-press molded product in order to eliminate the influence of molding distortion, and it is also desirable to make the size (width and thickness) of the cut-out piece as small as possible in terms of heat conduction. From the viewpoint of maintaining excellent dimensional stability under various external environmental conditions, the glass transition temperature of the thermoplastic resin composition is 110° C. or higher, preferably 120° C. or higher, and more preferably 140° C. or higher. The upper limit of the glass transition temperature is not particularly limited, but is preferably 200° C. or lower, more preferably 180° C. or lower, and more preferably 170° C. or lower.

[0149] The melting point refers to the peak-top temperature of an endothermic peak that appears when the temperature is increased from 23°C at a rate of 10°C / min using a differential scanning calorimeter (DSC). When two or more endothermic peaks appear, the melting point refers to the peak-top temperature of the endothermic peak with the highest temperature. The enthalpy of the endothermic peak is preferably 10 J / g or more, and more preferably 20 J / g or more. When measuring, it is desirable to first heat the sample to a temperature condition of the melting point + 20°C or more to melt the resin, and then cool it to 23°C at a rate of 10°C / min. From the viewpoint of maintaining excellent dimensional stability under various external environmental conditions, the melting point of the thermoplastic resin composition is preferably 275° C. or higher, and more preferably 285° C. or higher. The upper limit of the melting point is not particularly limited, but is preferably 350° C. or lower, more preferably 330° C. or lower, and even more preferably 315° C. or lower.

[0150] The solidification temperature of the thermoplastic resin composition is preferably 300° C. or lower, more preferably 290° C. or lower, and even more preferably 280° C. or lower. The solidification temperature is preferably 150° C. or higher, more preferably 180° C. or higher, even more preferably 210° C. or higher, still more preferably 230° C. or higher, and most preferably 250° C. or higher. When the solidification temperature is equal to or lower than the upper limit, the solidification of the crystalline resin (A2) proceeds efficiently, suppressing deformation when extruded from the mold by the ejector pin, and making it possible to suppress distortion and deformation of the molded part. When the solidification temperature is equal to or higher than the lower limit, the solidification rate of the crystalline resin (A2) reaches a certain value or higher, improving the crystallinity. This is because if the crystallinity is low, recrystallization may proceed when exposed to a high-temperature environment, resulting in changes in the dimensions of the molded part. The solidification temperature refers to the peak-top temperature of the exothermic peak that appears when the temperature is decreased from 340°C at a rate of 20°C / min using the above-mentioned differential scanning calorimeter (DSC). When two or more exothermic peaks appear, the solidification temperature refers to the peak-top temperature of the exothermic peak on the highest temperature side. The enthalpy of the exothermic peak at this time is preferably 5.0 J / g or more, and more preferably 7.0 J / g or more.

[0151] In this embodiment, the thermoplastic resin composition contains at least a polyphenylene ether (A1) and a crystalline resin (A2). This improves dimensional stability after molding and allows the excellent dimensional stability to be maintained under various external environmental conditions. The crystalline resin (A2) may be used alone or in combination.

[0152] <Method of manufacturing resin composition> The resin composition is not particularly limited as long as it is a method of mixing the above-mentioned polyphenylene ether (A1), crystalline resin (A2), and filler (B), as well as the styrene-based resin (A3) or additives, as needed. Hereinafter, the polyphenylene ether (A1), the crystalline resin (A2), the styrene-based resin (A3), the filler (B), the compatibilizer (D), the colorant (E), and the other additives (F) may be referred to as component (A1), component (A2), component (A3), component (B), component (D), component (E), and component (F), respectively.

[0153] Examples of a method for mixing the above-mentioned components (A1), (A2), (B), and optional components (A3), (D) to (F) include the following method (1) or (2). (1) A method in which the above-mentioned component (A), and, if necessary, components (B), (D), (E), and (F), are mixed using a Henschel mixer or the like, and the mixture is fed into a melt kneader and kneaded. (2) A method in which the above-mentioned thermoplastic resin, component (A1), and, if necessary, components (D) to (F) are mixed in advance using a Henschel mixer or the like in a single-screw or twin-screw extruder to prepare a mixture, and the mixture is fed into a melt kneader and kneaded, and then component (B) is optionally blended in through a side feeder.

[0154] The components constituting the thermoplastic resin composition may be supplied to the melt kneader by supplying all of the components to the same supply port at once, or by supplying each component from a different supply port.

[0155] When the crystalline resin (A2) contains either or both of a semi-aromatic polyamide (A2-1) and a polyphenylene sulfide (A2-2), the melt-kneading temperature is preferably about 1°C to 100°C higher than the melting point of the semi-aromatic polyamide (A2-1) or the polyphenylene sulfide (A2-2), whichever is higher, and more preferably about 10°C to 50°C higher than the higher melting point. The shear rate in the mixer is 100 sec -1 The average residence time during kneading is preferably about 0.5 minutes or more and 5 minutes or less. Any known device may be used for melt-kneading, and for example, a single-screw or twin-screw extruder, a Banbury mixer, a melt-kneader (mixing roll, etc.), etc. are preferably used. The amount of each component blended when producing the resin composition is the same as the content of each component in the resin composition described above. [Example]

[0156] The present invention will be described in detail below with reference to specific examples and comparative examples, but the present invention is not limited to the following examples.

[0157] Each of the components of the resin compositions used in the molded articles of the Examples and Comparative Examples will be described below.

[0158] (1) Polyphenylene ether (hereinafter referred to as "PPE") (A1) PPE was used, which had a reduced viscosity of 0.40 dL / g measured using an Ubbelohde viscometer at 30°C and a concentration of 0.5 g / dL in chloroform solvent.

[0159] (2) Crystalline resin (A2) Crystalline resins (A2), PA9T, PA6I, PPS, PA10T, and PA66, were produced under the following conditions.

[0160] Polyamide 9,T (hereinafter referred to as "PA9T") (A2-1-1) 9743.5 g of terephthalic acid, 8072.3 g of 1,9-nonanediamine, 1424.6 g of 2-methyl-1,8-octanediamine, 329.7 g of benzoic acid, 19.6 g of sodium hypophosphite monohydrate (0.1% by mass based on the raw materials), and 5 L of distilled water were placed in a 40 L autoclave, and the atmosphere was replaced with nitrogen. The mixture was stirred at 100°C for 30 minutes, and the internal temperature was raised to 210°C over two hours. At this time, the autoclave pressure was raised to 22 kg / cm2. The reaction was continued for one hour, then the temperature was raised to 230°C and maintained at 230°C for two hours, while the water vapor was gradually released to maintain the pressure at 22 kg / cm2. Next, the pressure was reduced to 10 kg / cm2 over 30 minutes, and the reaction was continued for another hour, yielding a prepolymer with an intrinsic viscosity [η] of 0.25 dL / g. The resulting prepolymer was dried at 100°C under reduced pressure for 12 hours and crushed to a size of 2 mm or less. This was then subjected to solid-state polymerization at 230°C under 0.1 mmHg for 10 hours to obtain a polyamide with a melting point of 306°C and an intrinsic viscosity [η] of 0.80 dL / g. Furthermore, the terminal amino group concentration was measured according to the method described in the examples of JP-A-7-228689, and was found to be 20 μmol / g. The polyamide had carboxylic acid units containing 100 mol % terephthalic acid units and diamine units containing 80 mol % 1,9-nonanediamine units and 20 mol % 2-methyl-1,8-octanediamine units.

[0161] Polyamide 6,I (hereinafter referred to as "PA6I") (A2-1-2) 1500 g of an equimolar salt of isophthalic acid and hexamethylenediamine and 1.5 mol % excess isophthalic acid relative to the total equimolar salt components were dissolved in 1500 g of distilled water to prepare a 50 mass % homogeneous aqueous solution of raw material monomers, which was then placed in a 5 L autoclave. A 50% by mass homogeneous aqueous solution was concentrated to a solution concentration of 70% by mass by gradually releasing steam while stirring at a temperature of 110 to 150°C. The internal temperature was then raised to 220°C. At this time, the autoclave was pressurized to 1.8 MPa. The reaction was continued for 1 hour, while maintaining the pressure at 1.8 MPa by gradually releasing steam, until the internal temperature reached 245°C. The pressure was then reduced over 30 minutes, and the autoclave was then maintained at a reduced pressure of 650 torr for 10 minutes using a vacuum device, with the final internal temperature of the polymerization reaching 265°C. The mixture was then pressurized with nitrogen, extruded into strands from the lower spinneret (nozzle), cooled with water, cut into pellets, and dried at 100°C under a nitrogen atmosphere for 12 hours to obtain a polyamide (ratio of isophthalic acid units in dicarboxylic acid units: 100 mol%). The weight average molecular weight (Mw) and molecular weight distribution (Mw / Mn) of the obtained polyamide were measured using GPC (gel permeation chromatography, Tosoh Corporation, HLC-8020, hexafluoroisopropanol solvent, and PMMA (polymethyl methacrylate) standard sample (Polymer Laboratory Co., Ltd.)) to find that Mw was 20,000 and Mw / Mn was 2. Furthermore, as a result of measurement according to the above-mentioned measurement method, the terminal amino group concentration was 8 μmol / g. The polyamide had carboxylic acid units containing 100 mol % isophthalic acid units and diamine units containing 100 mol % hexamethylenediamine units.

[0162] Polyphenylene sulfide (hereinafter referred to as "PPS") (A2-2) (Process 1) A 150-liter autoclave equipped with a stirring blade and connected to a pressure gauge, thermometer, condenser, decanter, and rectification column was charged with 33.222 kg (226 mol) of p-dichlorobenzene (hereinafter abbreviated as "p-DCB"), 3.420 kg (34.5 mol) of NMP, 27.300 kg of 47.23 wt.% NaSH aqueous solution (230 mol as NaSH), and 18.533 g of 49.21 wt.% NaOH aqueous solution (228 mol as NaOH). The mixture was heated to 173°C over 5 hours under a nitrogen atmosphere with stirring, and 27.300 kg of water was distilled off. The autoclave was then sealed. The p-DCB distilled azeotropically during dehydration was separated in a decanter and returned to the autoclave as needed. After dehydration, the autoclave contained a fine particle of anhydrous sodium sulfide composition dispersed in the p-DCB. The NMP content in this composition was 0.079 kg (0.8 mol), indicating that 98 mol% (33.7 mol) of the charged NMP had been hydrolyzed to the sodium salt of NMP's ring-opened form (4-(methylamino)butyric acid) (hereinafter abbreviated as "SMAB"). The amount of SMAB in the autoclave was 0.147 mol per mol of sulfur atom present in the autoclave. The theoretical amount of dehydration when all of the charged NaSH and NaOH are converted to anhydrous NaS is 27.921 g. This indicates that of the 878 g (48.8 mol) of water remaining in the autoclave, 609 g (33.8 mol) was consumed in the hydrolysis reaction between NMP and NaOH and was not present in the autoclave as water, while the remaining 269 g (14.9 mol) remained in the autoclave in the form of water or crystal water. The amount of water in the autoclave was 0.065 mol per mol of sulfur atom present in the autoclave. (Process 2) After the dehydration step was completed, the autoclave was cooled to an internal temperature of 160°C, and 46.343 kg (467.5 mol) of NMP was charged. The temperature was then raised to 185°C. The amount of water in the autoclave was 0.025 mol per 1 mol of NMP charged in step 2. When the gauge pressure reached 0.00 MPa, the valve connecting the distillation column was opened, and the internal temperature was raised to 200°C over 1 hour. During this time, the outlet temperature of the distillation column was controlled by cooling and valve opening to be 110°C or lower. The distilled vapor mixture of p-DCB and water was condensed in a condenser and separated in a decanter. The p-DCB was returned to the autoclave. The amount of distilled water was 228 g (12.7 mol). (Step 3) The amount of water in the autoclave at the start of step 3 was 41 g (2.3 mol), which was 0.005 mol per mole of NMP charged in step 2 and 0.010 mol per mole of sulfur atoms present in the autoclave. The amount of SMAB in the autoclave was 0.147 mol per mole of sulfur atoms present in the autoclave, the same as in step 1. Next, the internal temperature was raised from 200°C to 230°C over 3 hours, stirred at 230°C for 1 hour, and then raised to 250°C and stirred for 1 hour. The gauge pressure at the internal temperature of 200°C was 0.03 MPa, and the final gauge pressure was 0.40 MPa. After cooling, 650 g of the resulting slurry was poured into 3 liters of water and stirred at 80°C for 1 hour, followed by filtration. The cake was again stirred in 3 liters of warm water for 1 hour, washed, and then filtered. This procedure was repeated four times. This cake was again added with 3 liters of warm water and acetic acid, adjusted to pH 4.0, stirred for 1 hour, washed, and then filtered. This cake was again stirred with 3 liters of warm water for 1 hour, washed, and then filtered. This procedure was repeated twice. The cake was dried overnight at 120°C using a hot air dryer to obtain a white powdery PPS resin (A-1). (Melt viscosity measurement of PPS) The PPS prepared as described above was subjected to a flow test at 300°C under a load of 1.96 × 10 using a Shimadzu CFT-500D flow tester. 6 The melt viscosity of this polymer was measured at 300°C after holding for 6 minutes at a temperature of 41 Pa·s and L / D=10 (mm) / 1 (mm). The non-Newtonian index was 1.07.

[0163] Polyamide 10T (hereinafter referred to as "PA10T") 4560 parts by weight of TPA powder as a dicarboxylic acid component, 9 parts by weight of SHP as a polymerization catalyst, and 490 parts by weight of STA as an end-capping agent were placed in a ribbon blender-type reactor and heated to 170 °C under nitrogen sealing while stirring at 30 rpm using a double helical stirring blade. Then, while maintaining the temperature at 170 °C and the rotation speed at 30 rpm, 4950 parts by weight of DDA heated to 100 °C was added to the TPA powder continuously (continuous injection method) at a rate of 33 parts by weight / min over 2.5 hours using a liquid injection device to obtain a reaction product. The molar ratio of the raw monomers was DDA:TPA:STA = 49.6:47.4:3.0 (the equivalent ratio of the end groups of the raw monomers was DDA:TPA:STA = 50.4:48.1:1.5). [Step (ii)] The reaction product obtained in step (i) was subsequently heated to 230°C under a nitrogen stream in the ribbon blender-type reaction apparatus used in step (i), and polymerized by heating at 230°C for 5 hours to obtain PA10T. The melting point of the resulting PA10T was 317°C and the relative viscosity was 2.25.

[0164] Polyamide 66 (hereinafter referred to as "PA66") The polymerization reaction of polyamide was carried out by the "hot melt polymerization method" as follows. First, 1500 g of an equimolar salt of adipic acid and hexamethylenediamine was dissolved in 1500 g of distilled water to prepare a homogeneous aqueous solution containing 50% by weight of the raw material monomers. This aqueous solution was charged into a 5.4 L autoclave and purged with nitrogen. Next, the solution was concentrated by gradually removing water vapor while stirring at a temperature of approximately 110°C to 150°C to a solution concentration of 70% by weight. The internal temperature was then raised to 220°C. The autoclave was then pressurized to 1.8 MPa. The reaction was continued for one hour while maintaining the pressure at 1.8 MPa by gradually removing water vapor until the internal temperature reached 245°C. The pressure was then reduced over one hour. The autoclave was then maintained at a reduced pressure of 650 torr (86.66 kPa) for 10 minutes using a vacuum device. The final internal temperature of the polymerization was 265°C. Next, pressurize with nitrogen and form strands from the lower spinneret (nozzle), then water-cool and cut. The mixture was discharged in the form of pellets, which were then dried at 100°C under a nitrogen atmosphere for 12 hours to obtain crystalline polyamide A-1 (polyamide 66). The resulting crystalline polyamide A-1 (polyamide 66) had Mw(A)=40,000, Mw / Mn=2.0, and a melting point Tm2=260°C.

[0165] (3) Styrene-based resin (A3) As the styrene-based resin (A3), the following was used. PS Japan GPPS685 Mitsui Chemicals Toughmer P0680J

[0166] (4) Inorganic filler (B) As the inorganic filler (B), the following was used. Glass fiber: Nippon Electric Glass Co., Ltd. "ECS03-T747", fiber diameter 13 μm, chop length 3 mm Glass flakes: "Microglass (registered trademark) Fleca (registered trademark) REFG-301" (E glass, average thickness 5 μm, average particle size 160 μm, coating film (solid content of surface treatment agent (binder component: (bisphenol A type epoxy resin) adhesion rate 0.6 mass%) manufactured by Nippon Sheet Glass Co., Ltd.)

[0167] (5) Compatibilizer (D) The following was used as the compatibilizer (D). Maleic anhydride: Wako Pure Chemical Industries, Ltd., special grade reagent Peroxide: NOF Corporation's "Perhexa 25B-40" Epoxy group-containing acrylic-styrene polymer: NOF Corporation "Marproof G-1005S"

[0168] (6) Colorant (E) As the colorant (E), the following was used. eBIND® LTW®-8071H (manufactured by Orient Chemical Industry Co., Ltd., a masterbatch of polyamide 66 and laser-transparent colorant)

[0169] [Production Examples 1 to 9: Production of Resin Compositions] A twin-screw extruder (ZSK-26MC, manufactured by Coperion, Germany) was used, which had three feed ports: upstream, central, and downstream, relative to the direction of raw material flow. The feed port positions were as follows: when the total length of the extruder cylinder was 1.0, the feed port at L=0 from the upstream was the upstream feed port, the feed port at L=0.4 was the central feed port, and the feed port at L=0.6 was the downstream feed port. The raw material was supplied to the upstream, central, and downstream feed ports using a hopper. The temperature from the upstream to the central feed port was set at 320°C, and the temperature downstream of the central feed port was set at 310°C. The screw rotation speed was 300 rpm, and the output rate was 15 kg / h. In addition, openings were made in the block immediately before the cylinder block with the central supply port and in the cylinder block immediately before the die, and residual volatile matter and oligomers were removed by vacuum suction at a vacuum level (absolute pressure) of 60 Torr. Each raw material was supplied and melt-kneaded according to the composition shown in Table 1 below. The formulation of each example is shown in Table 1. The strand extruded from the tip of the extruder die was cooled in a SUS strand bath filled with cooling water, and then cut with a strand cutter to obtain resin composition pellets. To adjust the moisture content of the resulting resin composition pellets, after extrusion, they were dried for 1 hour in a dehumidifying dryer set at 120°C and then placed in an aluminum-coated moisture-proof bag. The moisture content of the resin composition pellets at this time was approximately 200 to 300 ppm.

[0170] [Table 1]

[0171] <Physical properties and evaluation> Pellets of each resin composition obtained in Production Examples 1 to 9 were dried in a nitrogen stream to reduce the moisture content in the resin composition to 500 ppm or less. The moisture-adjusted pellets of each resin composition were then subjected to measurements of various physical properties using the methods described below. Furthermore, the molded articles described below were subjected to measurements of various physical properties and various evaluations. The evaluation results for each Example and Comparative Example are shown in Table 2.

[0172] (1) Glass transition temperature (Tg) The pellets of each resin composition obtained in Production Examples 1 to 9 were used in a PS40E injection molding machine manufactured by Nissei Kogyo Co., Ltd. to mold articles in accordance with JIS-K7139, with a cooling time of 15 seconds, a screw rotation speed of 100 rpm, a cylinder temperature of 290°C (Comparative Examples 1 to 3), or 320°C (Examples 1 to 4, Comparative Examples 4 to 5), a mold temperature of 120°C (Comparative Examples 1 to 3), or 140°C (Examples 1 to 4, Comparative Examples 4 to 5), and a filling time in the range of 1.5 seconds ± 0.1 seconds. The injection pressure and injection rate were appropriately adjusted to these values. The molded articles were measured using a dynamic viscoelasticity evaluation device (EPLEXOR500N manufactured by GABO) under the following conditions. (Measurement conditions) Measurement mode: Tensile Measurement frequency: 8Hz Heating rate: 3°C / min Temperature range: -100℃ to 250℃

[0173] The ratio (E2 / E1) of the loss modulus E2 to the storage modulus E1 was defined as tan δ, and the temperature at which tan δ reached its maximum was defined as the glass transition temperature (Tg).

[0174] (2) Melting point The melting point was measured in accordance with JIS-K7121 using a Diamond-DSC manufactured by PERKINELMER under a nitrogen atmosphere as follows. First, about 10 mg of the resin composition was heated from 40°C to 350°C at a heating rate of 20°C / min. Subsequently, after being held at 350°C for 3 minutes, it was cooled from 350°C to 40°C at a cooling rate of 20°C / min. After being held at 40°C for 3 minutes, it was again heated from 40°C to 350°C at a heating rate of 20°C / min. The highest of the melting peak temperatures that appeared during this process was taken as the melting point.

[0175] (3) Crystallization peak temperature The crystallization peak temperature was measured in accordance with JIS-K7121 using a Diamond-DSC manufactured by Perkinelmer Co., Ltd., as follows: The measurement was carried out under a nitrogen atmosphere. First, approximately 10 mg of the resin composition was heated from 40°C to 350°C at a heating rate of 20°C / min. Next, after maintaining the temperature at 350°C for 3 minutes, it was cooled from 350°C to 40°C at a cooling rate of 20°C / min. After maintaining the temperature at 40°C for 3 minutes, it was again heated from 40°C to 350°C at a heating rate of 20°C / min. After maintaining the temperature at 350°C for 3 minutes, it was cooled from 350°C to 40°C at a cooling rate of 20°C / min. The crystallization peak temperature that appeared at this time was measured.

[0176] (4) Circularity The pellets of each resin composition obtained in Production Examples 1 to 9 were used in an SE50D injection molding machine manufactured by Sumitomo Heavy Industries to mold cylindrical test pieces as shown in FIG. 2, with the injection pressure and injection speed appropriately adjusted so that the cooling time was 20 seconds, the screw rotation speed was 100 rpm, the cylinder temperature was 290°C (Comparative Examples 1 to 3), 320°C (Examples 1 to 4, Comparative Examples 4 to 5), the mold temperature was 120°C (Comparative Examples 1 to 3), 140°C (Examples 1 to 4, Comparative Examples 4 to 5), the dwell pressure was set to 70% of the peak filling pressure, and the filling time was within the range of 1.0 second ± 0.1 second. The outer roundness of the end of this cylindrical test piece opposite the gate (the upper end in Figure 2) was measured using a device made by Keyence Corporation, which combined a VR6200 with an electric rotation unit VR-RU2. (Circularity immediately after molding) After molding, the cylindrical test piece was left to stand in an environment of 23°C and 50% RH for 48 hours, and then attached to a rotation unit. The cylindrical test piece was rotated in 20-degree increments to measure its three-dimensional shape, and the roundness of the end was measured using the attached analysis software. (roundness after aging) After aging for 2000 hours in an 85°C / 85% RH environment or a 125°C environment, the samples were left standing in a 23°C / 50% RH environment for 24 hours, and the roundness was measured using the same equipment and method. Furthermore, after measuring the roundness after aging, the sample was left standing in an environment of 23°C and 50% RH for 500 hours, and then the roundness was measured again using the same equipment and method. This is an evaluation that assumes that the product will be used in multiple environments, and is used to check, for example, the release of absorbed moisture, and conversely, the change in dimensions due to absorption. Therefore, in this evaluation, the smaller the difference between the initial value and the measured value in this evaluation, the better the product is able to withstand a variety of environments.

[0177] (5) Shrinkage rate The pellets of each resin composition obtained in Production Examples 1 to 9 were used in an SE130D injection molding machine manufactured by Sumitomo Heavy Industries to mold flat plate-type test specimens as shown in FIG. 3, with the cooling time set to 20 seconds, the screw rotation speed set to 120 rpm, the cylinder temperature set to 290°C (Comparative Examples 1 to 3), 320°C (Examples 1 to 4, Comparative Examples 4 to 5), the mold temperature set to 120°C (Comparative Examples 1 to 3), 140°C (Examples 1 to 4, Comparative Examples 4 to 5), the dwell pressure set to 70% of the peak filling pressure, and the injection pressure and injection speed adjusted appropriately so that the filling time was within the range of 0.5 seconds ± 0.1 seconds. (Shrinkage rate after molding) After molding, the product was left to stand in an environment of 23°C and 50% RH for 48 hours, and then dimensional measurements were taken at two locations: the length in the flow direction (MD) and the length perpendicular to the flow direction (TD) as shown in Figure 3. The shrinkage rate was calculated from the measurement results and the actual dimensions of the mold used for injection molding. (Shrinkage rate after aging) After aging for 2000 hours in an 85°C, 85% RH environment or a 125°C environment, the specimen was left standing in an 23°C, 50% RH environment for 24 hours, and the shrinkage rate was measured using the same method. Furthermore, after measuring the shrinkage rate after aging, the product was left to stand in an environment of 23°C and 50% RH for 500 hours, after which the shrinkage rate was measured again using the same method. This evaluation assumes that the product will be used in multiple environments, and is intended to confirm, for example, changes in dimensions due to the release of absorbed moisture, or conversely, due to absorption. For this reason, in this evaluation, the smaller the difference between the initial value and the measured value in this evaluation, the better the product's resistance to various environments.

[0178] (6) Multi-camera characteristic evaluation The pellets of each resin composition obtained in Production Examples 1 to 9 were used in an SE130D injection molding machine manufactured by Sumitomo Heavy Industries to mold the lens barrel test pieces shown in Figure 4 using the following conditions: cooling time: 20 seconds; screw rotation speed: 100 rpm; cylinder temperature: 290°C (Comparative Examples 1 to 3), 320°C (Examples 1 to 4, Comparative Examples 4 and 5); mold temperature: 120°C (Comparative Examples 1 to 3), 140°C (Examples 1 to 4, Comparative Examples 1 to 3); holding pressure: 60% of the peak filling pressure; and injection pressure and injection speed were appropriately adjusted so that the filling time was within the range of 0.6 seconds ± 0.1 seconds. A lens module was created by fitting a glass biconvex lens (diameter: φ40 mm, focal length: 100 mm) into the cylindrical part with an inner diameter of 40 mm at the bottom of Figure 4. The lens was fixed in place using ThreeBond's two-component epoxy adhesive (product number: 2088E). A stereo camera (ISC-200XC 8020, manufactured by ITD Lab) was fixed in place, and the above-mentioned lens module was fixed in front of the two cameras of this stereo camera so that the upper sides of the lens module in Figure 4 were in contact. As a result, the images captured by the stereo camera are images taken through the above-mentioned lens module. An LG monitor (product number: 24UD58-B) was placed in front of the device that combined the stereo camera and lens module described above. An image with a white background and black lines, each with a square grid of 1 cm on a side, was displayed on the entire screen of the monitor, and the position of the monitor was adjusted so that the image captured by the stereo camera was in focus. In this state, images were taken with each of the left and right cameras. The positions of the stereo camera and monitor were left unchanged, and only the lens module was removed. This lens module was then aged for 2000 hours in an 85°C, 85% RH environment or a 125°C environment, and then left to stand in a 23°C, 50% RH environment for 24 hours, and images were taken with each of the left and right cameras using the same method. The images taken according to the above procedure before and after aging were evaluated as follows. Evaluation 1: Check for misalignment of grid lines by overlaying the left and right images before aging Evaluation 2: Check for misalignment of the grid lines by overlaying the left and right images before and after aging. We evaluated the degradation characteristics of stereo camera images due to aging. For both evaluations 1 and 2, the evaluation was made as follows: a case where there was no misalignment of the grid lines was marked "◯", a case where there was misalignment of the grid lines but they overlapped and became thicker was marked "△", and a case where the grid lines were misaligned and did not overlap was marked "X".

[0179] (7) Light transmittance measurement The pellets of each resin composition obtained in Production Examples 1 to 9 were used in an SE50D injection molding machine manufactured by Sumitomo Heavy Industries to mold flat plate-type test specimens as shown in FIG. 3 , with the injection pressure and injection speed appropriately adjusted so that the cooling time was 20 seconds, the screw rotation speed was 100 rpm, the cylinder temperature was 290°C (Comparative Examples 1 to 3), 320°C (Examples 1 to 4, Comparative Examples 4 and 5), the mold temperature was 120°C (Comparative Examples 1 to 3), 140°C (Examples 1 to 4, Comparative Examples 1 to 3), the dwell pressure was set to 60% of the peak filling pressure, and the filling time was within the range of 0.4 seconds ± 0.1 seconds. The flat test piece described above was cut into 18 equal pieces by cutting the short side into thirds and the long side into sixths (Fig. 5). The light transmittance of each of these small pieces at a wavelength of 940 nm was measured using an apparatus consisting of a JASCO V670 spectrometer combined with an ILN-725 integrating sphere. The maximum and minimum light transmittance values ​​and their differences for the 18 measurement points are shown in Table 2. The purpose of this evaluation is to check the variation in transmittance within the product. The smaller the difference between the maximum and minimum values ​​in this evaluation, the smaller the variation in transmittance within the plate, and the better the material is for laser welding.

[0180] (8) Adhesive strength The pellets of each resin composition obtained in Production Examples 1 to 9 were used in an injection molding machine (Toshiba Machine Co., Ltd.: EC75SXII) to mold flat plate test pieces with long sides of 100 mm, short sides of 25 mm, and a thickness of 3 mm in accordance with JIS K6850, with the cylinder temperature set to 290°C (Comparative Examples 1 to 3), 320°C (Examples 1 to 4, Comparative Examples 4 to 5), and the mold temperature set to 120°C (Comparative Examples 1 to 3), 140°C (Examples 1 to 4, Comparative Examples 4 to 5).The injection pressure and injection speed were appropriately adjusted so that the filling time was within the range of 0.5 seconds ± 0.1 seconds.

[0181] Two of the above-mentioned flat plate test pieces (test pieces conforming to JIS K6850) were prepared, and a U-shaped PTFE spacer (thickness 2 mm, cut portion: 15 mm x 2 mm) was sandwiched between them to create a test piece for measuring bonding strength, as shown in Figure 6. Dexerials Corporation's "SA2371DN" adhesive was injected into the 15 mm x 5 mm x 2 mm gap in the PTFE spacer of this test piece, and UV light with a wavelength of 355 nm was irradiated at a dose of 2000 mJ / cm. 2 After irradiation, the mixture was heated in an oven at 100°C for 3 hours to solidify. The test pieces with the solidified adhesive were subjected to a tensile test in the direction of their long sides to measure the bonding strength. The maximum load required for peeling is shown in Table 2 as the bonding strength.

[0182] (9) Strength measurement The pellets of each resin composition obtained in Production Examples 1 to 9 were used in an injection molding machine (Toshiba Machine Co., Ltd.: EC75SXII) to mold JIS K7139 Type A multipurpose test specimens, non-weld type test specimens, and weld type test specimens using a single-end gate mold and a double-end gate mold under the following conditions: cylinder temperature: 290°C (Comparative Examples 1 to 3), 320°C (Examples 1 to 4, Comparative Examples 4 to 5), and mold temperature: 120°C (Comparative Examples 1 to 3), 140°C (Examples 1 to 4, Comparative Examples 4 to 5). Average injection molding speed: 30mm / sec Holding pressure: 70% of maximum injection peak pressure Injection time: 50 seconds Pressure retention time: 20 seconds Using the test piece, the tensile yield strength (MPa) was measured at a temperature of 23°C and a speed of 5 mm / min in accordance with ISO527. The evaluation criteria were such that the higher the measured value, the better the strength.

[0183] [Table 2] [Industrial Applicability]

[0184] According to the present invention, it is possible to provide a camera module for a multi-camera system that exhibits little dimensional change, has good strength, and is capable of acquiring excellent information even under various external environmental conditions.

Claims

1. A camera module for use in a multi-camera system, A camera module for a multi-camera system, characterized by comprising a component made of a thermoplastic resin composition containing polyphenylene ether (A1), a crystalline resin (A2), and an inorganic filler (excluding carbon fiber) (B), and having a glass transition temperature of 110°C or higher and a melting point of 275°C or higher.

2. 2. The camera module for a multi-camera system according to claim 1, wherein the thermoplastic resin composition further contains a styrene-based resin (A3).

3. 3. The camera module for a multi-camera system according to claim 1, wherein the solidification temperature of the thermoplastic resin composition is 300° C. or lower.

4. 3. The camera module for a multi-camera system according to claim 1, wherein the crystalline resin (A2) is a semi-aromatic polyamide (A2-1) or a polyphenylene sulfide (A2-2).

5. 3. The camera module for a multi-camera system according to claim 1, wherein the content of the inorganic filler (B) is 10 to 150 parts by mass relative to a total of 100 parts by mass of the polyphenylene ether (A1) and the crystalline resin (A2), or relative to a total of 100 parts by mass of the polyphenylene ether (A1), the crystalline resin (A2), and the styrene-based resin (A3).

6. 3. The camera module for a multi-camera system according to claim 1, wherein the inorganic filler (B) is at least one selected from the group consisting of glass fiber, calcium carbonate, talc, mica, glass flake, wollastonite, and milled fiber.

7. The semi-aromatic polyamide (A2-1) comprises at least one of a polymer (A2-1-1) consisting of dicarboxylic acid units (a) containing 60 to 100 mol% of terephthalic acid units and diamine units (b) containing 60 to 100 mol% of 1,9-nonanediamine units and / or 2-methyl-1,8-octanediamine units, and a polymer (A2-1-2) consisting of 10 mol% or more of isophthalic acid units relative to 100 mol% of all constituting dicarboxylic acid units.

8. 3. The camera module for a multi-camera system according to claim 1, wherein the component is at least one selected from the group consisting of a lens barrel, a lens holder, and a housing.

9. 3. The camera module for a multi-camera system according to claim 1, wherein the number of gates in the component is six or less.

10. 3. The camera module for a multi-camera system according to claim 1, wherein the components are joined by adhesive or laser welding.

Images