Laser welding polyphenyl ether alloy and preparation method thereof

Abstract

The invention relates to the technical field of polyphenyl ether alloy materials, in particular to a laser welding polyphenyl ether alloy and a preparation method thereof. The composite material comprises the following components in parts by weight: 60-70 parts of a polyphenyl ether material; 8 to 16 parts by weight of high impact polystyrene; 0.2 to 0.4 part by weight of an antioxidant; 0.8 to 1.2 parts by weight of a lubricant; 10 to 12 parts by weight of a BDP flame retardant; 0.3 to 0.5 part by weight of an anti-dripping agent; 3-5 parts by weight of a toughening agent; 1-2 parts by weight of a compatilizer; 3-5 parts by weight of black seeds; the toughening agent is SEBS (styrene-ethylene-butylene-styrene); the black seed is a black light-transmitting composition; the light transmittance of the laser welding polyphenyl ether alloy is not lower than 30% within the wavelength range of 780-1200 nm and the thickness of 1.0-2.0 mm. The laser welding polyphenyl ether alloy with the characteristics that the infrared light transmittance (1.5 mm) is greater than or equal to 30%, the surface glossiness is good, the flame retardant rating is V0 at 1.5 mm and the like is obtained while the mechanical strength such as the tensile strength of the polyphenyl ether alloy is greater than or equal to 60 MPa, the bending strength is greater than or equal to 95 MPa, the notch impact strength is greater than or equal to 16 KJ / m < 2 > and the like is realized, and the processing temperature range is 270-290 DEG C.

Description

Technical Field

[0001] The invention relates to the technical field of polyphenylene ether alloy materials, with an IPC main classification number of C08L71 / 00, and specifically relates to a laser-welded polyphenylene ether alloy and a preparation method thereof. Background Art

[0002] Laser welding technology for polymer alloy materials is a method of connecting plastic parts using laser energy. Specifically, the two parts to be welded are clamped under a certain pressure, and then infrared light is used to irradiate the optical fiber through the laser transmission layer part 2 to irradiate the other part (laser absorption layer part), and the surface of the part is melted after absorbing the laser and converting it into heat, forming a melting zone on the contact surface of the two parts to be welded, and under the action of the clamping force, the melting zones of the two products are in close contact. Under the combined action of the internal force generated by the thermal expansion of the plastic and the clamping force, the melting zone is fused, and then a weld is formed during the cooling process, so that the two are tightly connected. This technology has been widely used in the fields of automobiles, medical care, electronics and consumer products due to its high precision, high efficiency and excellent welding quality.

[0003] In addition, HIPS modified PPE materials are widely used in the fields of photovoltaic junction boxes, automobile industry, electronic appliances, etc. due to their excellent impact strength, mechanical strength, dimensional stability of products, processing performance and other characteristics. Such alloy materials often require laser welding of specific parts in practical applications. In order to improve the mechanical strength, heat resistance, flame retardancy and other characteristics of HIPS modified PPE materials, various additives need to be added to the formulation system. The addition of these additives often changes the microstructure of polyphenylene ether alloy materials, causing the randomness of polyphenylene ether alloy materials to be affected, thereby causing the transparency of the material, the transmittance of infrared light and other characteristics to decrease, affecting its laser welding. Especially for black polyphenylene ether alloy materials, because their absorption rate of laser is as high as 90% or more, it seriously affects the normal laser welding of polyphenylene ether alloy materials. Therefore, it is a technical problem that needs to be solved urgently to ensure high transmittance to infrared light to ensure normal laser welding of polyphenylene ether alloy materials, and at the same time achieve significant improvement in the mechanical strength and surface gloss of polyphenylene ether alloy materials. Summary of the invention

[0004] In view of the above technical problems, the present invention provides a laser welded polyphenylene ether alloy. By optimizing the ratio and composition of its key components, the tensile strength of the polyphenylene ether alloy is ≥60MPa, the bending strength is ≥95MPa, and the notched impact strength is ≥16KJ / m 2 While maintaining the same mechanical strength, a laser welded polyphenylene ether alloy with infrared light transmittance (1.5mm) ≥ 30%, good surface gloss, and flame retardant grade V0@1.5mm is obtained.

[0005] Specifically, the laser welded polyphenylene ether alloy comprises the following components in parts by weight:

[0006] 60-70 parts by weight of polyphenylene ether material;

[0007] 8 to 16 parts by weight of high impact polystyrene;

[0008] 0.2-0.4 parts by weight of an antioxidant;

[0009] 0.8 to 1.2 parts by weight of a lubricant;

[0010] 10 to 12 parts by weight of BDP flame retardant;

[0011] 0.3-0.5 parts by weight of an anti-dripping agent;

[0012] 3 to 5 parts by weight of a toughening agent;

[0013] 1 to 2 parts by weight of a compatibilizer;

[0014] 3 to 5 parts by weight of black seed;

[0015] The toughening agent is SEBS; the black seed is a black light-transmitting composition.

[0016] As a preferred technical solution of the present invention, the black translucent composition comprises anthraquinone derivatives and perylene diimide derivatives; preferably, the laser welded polyphenylene ether alloy has a transmittance of not less than 30% within a wavelength range of 780 to 1200 nm and a thickness of 1.0 to 2.0 mm.

[0017] As a preferred technical solution of the present invention, the anthraquinone derivatives are selected from one or more of 1-(methylamino)anthraquinone, 1-methylaminoanthraquinone, 1,4-diamino-2-bromoanthraquinone, 1-[(1-methylethyl)amino]-4-[(4-methylphenyl)amino]anthraquinone, 1-amino-5-benzamidoanthraquinone, hydroxyanthraquinone, methoxyanthraquinone, 1,4-di-p-toluaminoanthraquinone, 1,4-di[(2-phenylethyl)amino]anthraquinone, and 1-(((2S)-2-hydroxy-3-(1-piperidinyl)propyl)amino)-4-(((2S)-2-oxiranylmethyl)amino)-9,10-anthraquinone.

[0018] As a preferred technical solution of the present invention, the perylene diimide derivative is selected from one or more of N,N-dimethoxybenzyl substituted perylene diimide, N,N-dimethoxyphenyl substituted perylene diimide and N,N-diphenyl substituted perylene diimide.

[0019] As a preferred technical solution of the present invention, the mass ratio of the anthraquinone derivatives to the perylene diimide derivatives is 1:(1-3).

[0020] As a preferred technical solution of the present invention, the polyphenylene ether material comprises a high melt index polyphenylene ether resin, and the melt index of the high melt index polyphenylene ether resin at 300° C. and a load of 10 kg is 6 to 35 g / 10 min.

[0021] As a preferred technical solution of the present invention, the polyphenylene ether material further comprises a low molecular weight polyphenylene ether resin terminated with double hydroxyl groups, and the hydroxyl content of the low molecular weight polyphenylene ether resin terminated with double hydroxyl groups is 1000 to 1200 g / mol.

[0022] As a preferred technical solution of the present invention, the compatibilizer is a maleic anhydride grafted polymer, and the maleic anhydride grafted polymer is maleic anhydride grafted polyphenylene ether and / or maleic anhydride grafted SEBS.

[0023] As a preferred technical solution of the present invention, the HIPS has a melt index of 2 to 5.5 g / 10 min at 200° C. and a load of 5 kg.

[0024] The present invention also provides a method for preparing the laser welded polyphenylene ether alloy as described above, which comprises the following steps:

[0025] Step 1: Take polyphenylene ether material, high impact polystyrene, antioxidant, lubricant, BDP flame retardant, anti-dripping agent, toughening agent, compatibilizer and black component according to the required ratio;

[0026] Step 2: adding the polyphenylene ether material, high impact polystyrene, antioxidant, lubricant, anti-dripping agent, toughening agent, compatibilizer and black seed component into a high-speed mixer and stirring evenly to obtain a premix;

[0027] Step 3: adding the premix into a twin-screw extruder, feeding the BDP flame retardant on the side, melting and mixing, extruding, vacuum granulating, and post-processing to obtain the product.

[0028] The laser welding polyphenylene ether alloy material provided in the present invention has the following beneficial effects compared with existing related products:

[0029] In the present invention, by optimizing and adjusting the key components of laser welding polyphenylene ether alloy, the tensile strength, bending strength, impact strength, etc. of PPE-HIPS alloy material are significantly improved, and the transmittance of infrared light is effectively improved, so that the alloy material can have a stronger welding force during laser welding, and the glossiness of the welding interface and the surface of the material after welding is not significantly affected. Specifically, by introducing an appropriate amount of modified polyphenylene ether (small molecular weight functionalized polyphenylene ether) into the polyphenylene ether resin, matching PPE and HIPS with a specific melt index, and adding a specific compatibilizer, it is ensured that the various components of the alloy material can be fully mixed and diffused, avoiding the stress concentration caused by the uneven diffusion between the components of the material, the decline of mechanical properties and other problems. At the same time, the specific components and proportions of the black seed are further optimized, thereby further improving the transmittance of PPE-HIPS alloy material to infrared light, so that it reaches more than 30%, effectively expanding its application range in the field of laser welding. DETAILED DESCRIPTION

[0030] When the content, dosage, or other values ​​or parameters in the present application are expressed as a range, a preferred range, or a range defined by a series of upper preferred values ​​and lower preferred values, this should be understood as specifically disclosing all ranges formed by any pairing of any range upper limit or preferred value with any range lower limit or preferred value, regardless of whether the range is disclosed separately. For example, when the range "2 to 8" is disclosed, the described range should be interpreted as including the range "2 to 8", "2 to 7", "2 to 6", "2 to 5 and 6,7", "2 to 3 and 4 to 8", etc.

[0031] When numerical ranges are described herein, unless otherwise indicated, the ranges are intended to include the endpoints and all integers and fractions within the range. The singular includes the plural unless the context clearly indicates otherwise. "Optional" or "any" means that the item or event described thereafter may or may not occur, and the description includes situations where the event occurs and situations where the event does not occur.

[0032] The laser welding polyphenylene ether alloy provided by the present invention is an alloy material prepared by adding a black light-transmitting composition with a specific molecular structure to a HIPS (high-impact polystyrene) modified polyphenylene ether (PPE) resin material, and blending and modifying auxiliary components such as an antioxidant, a BDP flame retardant, a toughening agent, and a compatibilizer, and can be used for laser welding alloy parts; the laser welding polyphenylene ether alloy comprises the following components in parts by weight:

[0033] 60-70 parts by weight of polyphenylene ether material, 8-16 parts by weight of high impact polystyrene, 0.2-0.4 parts by weight of antioxidant, 0.8-1.2 parts by weight of lubricant, 10-12 parts by weight of BDP flame retardant, 0.3-0.5 parts by weight of anti-dripping agent, 3-5 parts by weight of toughening agent, 1-2 parts by weight of compatibilizer, 3-5 parts by weight of black seed; the toughening agent is SEBS; the black seed is a black light-transmitting composition.

[0034] The polyphenylene ether material in the present invention is a component containing polyphenylene ether, which may be pure polyphenylene ether (PPE), but it does not mean that it does not contain any other components. The polyphenylene ether material may be a material in which other components such as additives that are trace or trace amounts to those skilled in the art are doped in polyphenylene ether; the polyphenylene ether is the PPE material well known to those skilled in the art.

[0035] In some preferred embodiments of the present invention, the polyphenylene ether material comprises a high melt index polyphenylene ether resin, and the melt index of the high melt index polyphenylene ether resin at 300°C and a load of 10kg is 6 to 35g / 10min. For example, the melt index may be 6g / 10min, 7g / 10min, 8g / 10min, 9g / 10min, 10g / 10min, 11g / 10min, 12g / 10min, 13g / 10min, 14g / 10min, 15g / 10min, 16g / 10min in, 17g / 10min, 18g / 10min, 19g / 10min, 20g / 10min, 21g / 10min, 22g / 10min, 23g / 10min, 24g / 10min, 25g / 10min, 26g / 10min, 27g / 10min, 28g / 10min, 29g / 10min, 30g / 10min, 31g / 10min, 32g / 10min, 33g / 10min, 34g / 10min, 35g / 10min, etc.

[0036] The technical term "melt index" in the present invention refers to the number of grams of melt flowing out of a material through a standard capillary under a certain temperature and load pressure within a certain time (e.g., 10 minutes), which can be obtained by testing in a manner familiar to those skilled in the art, such as testing in accordance with national standards GB / T3682, etc. In the present invention, the specific type and source of the high melt index polyphenylene ether resin are not particularly limited, and can be selected and used according to actual needs, which may include but are not limited to Dalian Zhongmu Chemical ZM030, ZM035, ZM040, ZM045, ZM050, ZM055, ZM060, etc.; LXN035, LXN040, LXN045, LXN050, etc. of Xingchen Synthetic Materials Company's polyphenylene ether resin materials, etc.

[0037] In some embodiments, the polyphenylene ether material also includes a certain amount of other functional modified polyphenylene ethers. In some preferred embodiments, the functional modified polyphenylene ether is a low molecular weight polyphenylene ether resin terminated with double hydroxyl groups; preferably, the number average molecular weight of the low molecular weight polyphenylene ether resin terminated with double hydroxyl groups is 2000-2400; further preferably, the hydroxyl content of the low molecular weight polyphenylene ether resin terminated with double hydroxyl groups is 1000-1200 g / mol. The number average molecular weight, hydroxyl content, etc. described in the present invention are polymer parameters well known to those skilled in the art, and can be tested and confirmed in a manner well known to those skilled in the art. In the present invention, there is no special limitation on the specific source of the low molecular weight polyphenylene ether resin terminated with double hydroxyl groups, and materials including but not limited to SEM-12 modified polyphenylene ether resin of Shuobo Electronics can be used.

[0038] In some embodiments, the amount of the modified polyphenylene ether (e.g., a low molecular weight polyphenylene ether resin terminated with double-end hydroxyl groups) is 5 to 12 wt% of the total weight of the polyphenylene ether material. Based on 60 to 70 parts by weight of the polyphenylene ether material, the amount of the modified polyphenylene ether is 3 to 8 parts by weight, which can be 3 parts by weight, 4 parts by weight, 5 parts by weight, 6 parts by weight, 7 parts by weight, 8 parts by weight, etc.

[0039] The laser welding polyphenylene ether alloy of the present invention contains a certain amount of high impact polystyrene (HIPS), based on 60 to 70 parts by weight of the polyphenylene ether material, the amount of the high impact polystyrene is 8 to 16 parts by weight, which can be 8 parts by weight, 9 parts by weight, 10 parts by weight, 11 parts by weight, 12 parts by weight, 13 parts by weight, 14 parts by weight, 15 parts by weight, 16 parts by weight, etc. In the present invention, an appropriate amount of high impact polystyrene is added to interact with the components such as PPE, toughening agent, flame retardant, etc. in the formula system, so that the alloy material can absorb and disperse stress when impacted, thereby improving the overall toughness of the material.

[0040] In some preferred embodiments, the melt index of the high impact polystyrene (HIPS) at 200°C and 5kg load is 2-5.5g / 10min, for example, the melt index may be 2g / 10min, 2.5g / 10min, 3g / 10min, 3.5g / 10min, 4g / 10min, 4.5g / 10min, 5g / 10min, 5.5g / 10min, etc. In the present invention, there is no special limitation on the specific type and source of the high impact polystyrene, and the products may include but are not limited to Huizhou Renxin RH-825, RG-535TK, RG535TV, etc.; and also include but are not limited to Taiwan Chimei PH-88, PH-88S and other brands of products.

[0041] The laser welded polyphenylene ether alloy of the present invention contains a certain amount of antioxidant, which mainly prevents the thermal oxidation degradation of the polymer by capturing free radicals, decomposing hydroperoxides or providing hydrogen atoms, and is used to prevent the thermal oxidation degradation of the material during processing and use, thereby extending the service life of the material. The specific type and source of the antioxidant are not particularly limited in the present invention, and can include but are not limited to hindered phenol antioxidants (such as antioxidant 1010, etc.), phosphite antioxidants (such as antioxidant 168, antioxidant 626, etc.), high temperature antioxidants (such as Revonox608, GA-80, etc.), nano-SiO2 composite antioxidants, etc. In the present invention, based on 60 to 70 parts by weight of the polyphenylene ether material, the amount of the antioxidant is 0.2 to 0.4 parts by weight, for example, 0.2 parts by weight, 0.3 parts by weight, 0.4 parts by weight, etc.

[0042] The laser welding polyphenylene ether alloy of the present invention contains a certain amount of lubricant, which mainly reduces the friction between polymer molecules by forming a thin film on the surface of the material, thereby reducing the shear force during the processing process, reducing the processing viscosity of the material, improving the fluidity of the material, and reducing the wear and energy consumption during the processing. The type and specific source of the lubricant are not particularly limited in the present invention, and it can be used, including but not limited to silicone lubricants (including but not limited to PL-300, PL-310, PL-320 silicone masterbatch; EccoGrease SG10-2, OKS1110 multifunctional silicone grease, Kjell silicone plastic lubricant, methyl silicone oil, benzyl silicone oil, ethyl silicone oil, etc.), polyethylene wax and other polymer wax lubricants, microcrystalline wax, etc. In the present invention, based on 60 to 70 parts by weight of the polyphenylene ether material, the amount of the lubricant is 0.8 to 1.2 parts by weight, and the amount can be listed as 0.8 parts by weight, 0.9 parts by weight, 1.0 parts by weight, 1.1 parts by weight, 1.2 parts by weight, etc.

[0043] The laser welding polyphenylene ether alloy of the present invention contains a certain amount of BDP (bisphenol A bis (diphenyl phosphate)) flame retardant, which decomposes at high temperature to produce bromine free radicals, reacting with hydrogen and oxygen in the molecular chains of polymers such as PPE and HIPS to form a flame retardant effect, which helps to improve the flame retardant properties of the alloy material in the present invention. In the present invention, the type and specific source of the BDP flame retardant are not particularly limited. Products of various brands familiar to those skilled in the art can be used, or they can be prepared and used by themselves according to methods familiar to those skilled in the art. In the present invention, based on 60 to 70 parts by weight of the polyphenylene ether material, the amount of the BDP flame retardant is 10 to 12 parts by weight. For example, its amount can be 10 parts by weight, 10.5 parts by weight, 11 parts by weight, 11.5 parts by weight, 12 parts by weight, etc.

[0044] The laser welding polyphenylene ether alloy of the present invention contains a certain amount of anti-dripping agent, which prevents the molten alloy material from dripping by forming a carbon layer on the surface of the alloy when the alloy material of the present invention burns, thereby helping to reduce the risk of fire spread. The specific type and source of the anti-dripping agent in the present invention are not particularly limited, and products of various brands known to those skilled in the art can be used, including but not limited to polytetrafluoroethylene materials, such as pure powder polytetrafluoroethylene anti-dripping agent TPD-450, Entropy Energy Innovation Materials SN3300B7, SN3308; Quansheng International K-PT202, Flying Monkey New Materials Flyho K-PT107, Puli New Materials PL-905B, etc. In the present invention, based on 60 to 70 parts by weight of the polyphenylene ether material, the amount of the anti-dripping agent is 0.3 to 0.5 parts by weight, and the amount can be 0.3 parts by weight, 0.4 parts by weight, 0.5 parts by weight, etc.

[0045] The laser welding polyphenylene ether alloy of the present invention contains a certain amount of toughening agent, and the toughening agent is SEBS (styrene-ethylene-butylene-styrene block copolymer), which forms a rubber phase in the alloy material of the present invention due to its specific molecular structure, absorbs impact energy, and improves the toughness and impact resistance of the alloy material. The source of the SEBS is not particularly limited in the present invention, and various SEBS raw materials that meet the above requirements known to those skilled in the art can be selected, including but not limited to Kraton SEBS, such as G1651, E1818, G1654, G1650, G1660, G1652, G1657, G1701, G1641, RP6935, RP6936, etc. In the present invention, based on 60 to 70 parts by weight of the polyphenylene ether material, the amount of the toughening agent SEBS is 3 to 5 parts by weight. For example, the amount can be 3 parts by weight, 3.2 parts by weight, 3.3 parts by weight, 3.5 parts by weight, 3.8 parts by weight, 4.0 parts by weight, 4.2 parts by weight, 4.5 parts by weight, 4.8 parts by weight, 5.0 parts by weight, etc.

[0046] The laser welding polyphenylene ether alloy of the present invention contains a certain amount of compatibilizer, and the compatibilizer promotes the interaction between polymers, polymer-inorganic substances, etc. with different polarities and different characteristics through the characteristics of polar molecular segments and non-polar molecular segments in its molecular structure, improves the compatibility between different components, and improves the mechanical properties and processing properties of the alloy material. In the present invention, based on 60 to 70 parts by weight of the polyphenylene ether material, the amount of the compatibilizer is 1 to 2 parts by weight, and the amount can be 1 part by weight, 1.1 parts by weight, 1.2 parts by weight, 1.3 parts by weight, 1.4 parts by weight, 1.5 parts by weight, 1.6 parts by weight, 1.7 parts by weight, 1.8 parts by weight, 1.9 parts by weight, 2.0 parts by weight, etc. In some preferred embodiments of the present invention, the compatibilizer is a maleic anhydride grafted polymer, and the maleic anhydride grafted polymer is maleic anhydride grafted polyphenylene ether and / or maleic anhydride grafted SEBS. In the present invention, there is no particular limitation on the specific type of the maleic anhydride grafted polyphenylene ether or maleic anhydride grafted SEBS, and brands familiar to those skilled in the art may be used, including but not limited to Jiayirong Polymer FB820 (PPO-g-MAH), Kraton FG-1901, RP6670, MD6684, etc.

[0047] The laser-welded polyphenylene ether alloy of the present invention contains a certain amount of black seed, which is a black translucent composition, which is mainly used to improve the infrared light transmittance of the alloy material in the present invention and to improve the laser welding effect of the PPE alloy material. The black translucent composition is a component that can form a specific color (dark color, black) in the alloy material formed by the PPE material and the formulation system of the present invention, and has a high transmittance to infrared light, which helps to improve the infrared light transmittance of the PPE alloy material; preferably, the PPE alloy material in the present invention can make the laser-welded polyphenylene ether alloy have a transmittance of not less than 30% within the wavelength range of 780 to 1200nm and at a thickness of 1.0 to 2.0mm under the interaction between the specific PPE material, HIPS, compatibilizer and other components.

[0048] In some preferred embodiments, the black light-transmitting composition comprises anthraquinone derivatives and perylene diimide derivatives; further preferably, the anthraquinone derivatives are selected from 1-(methylamino)anthraquinone (CAS: 82-38-2), 1-methylaminoanthracene acid (CAS:), 1,4-diamino-2-bromoanthraquinone (CAS: 10165-31-8), 1-[(1-methylethyl)amino]-4-[(4-methylphenyl)amino]anthraquinone (CAS: 10572-60-8), 1-amino-5-benzamidoanthraquinone (CAS: 117-06-6), 1-hydroxyanthraquinone (CAS: 129-43-1), 2,3-dimethoxyanthraquinone (CAS: 22506-5 5-4), 1,8-p-toluidine aminoanthraquinone (CAS: 82-16-6), 1,4-bis[(2-phenylethyl)amino]anthraquinone (CAS: 15830-97-4), 1-(((2S)-2-hydroxy-3-(1-piperidinyl)propyl)amino)-4-(((2S)-2-oxiranylmethyl)amino)-9,10-anthraquinone (CAS: 1821496-27-8) or more; further, the perylene diimide derivative is selected from one or more of N,N-dimethoxybenzyl substituted perylene diimide (CAS: 83524-75-8), N,N-dimethoxyphenyl substituted perylene diimide, and N,N-diphenyl substituted perylene diimide.

[0049] In some preferred embodiments, the mass ratio of the anthraquinone derivatives and the perylene diimide derivatives is 1:(1-3), and the mass ratios include 1:1, 1:1.2, 1:1.5, 1:1.8, 1:2, 1:2.2, 1:2.5, 1:2.8, 1:3, etc.

[0050] The present invention also provides a method for preparing the above-mentioned laser welded polyphenylene ether alloy, which comprises the following steps:

[0051] Step 1: Take polyphenylene ether material, high impact polystyrene, antioxidant, lubricant, BDP flame retardant, anti-dripping agent, toughening agent, compatibilizer and black component according to the required ratio;

[0052] Step 2: adding the polyphenylene ether material, high impact polystyrene, antioxidant, lubricant, anti-dripping agent, toughening agent, compatibilizer and black seed component into a high-speed mixer and stirring evenly to obtain a premix;

[0053] Step 3: adding the premix into a twin-screw extruder, feeding the BDP flame retardant on the side, melting and mixing, extruding, vacuum granulating, and post-processing to obtain the product.

[0054] The specific process and the process parameters involved in the above preparation method of the present invention are not particularly limited and can be adjusted accordingly according to actual needs, for example, the temperature of the twin-screw extruder is set to 220-270° C., the rotation speed is set to 350-430 rpm, etc.

[0055] The polyphenylene ether alloy material provided in the present invention can be used for laser welding with other materials (it can also be a composite material doped with a certain amount of laser absorbing components). Its specific usage is not particularly limited and can be used in a manner familiar to those skilled in the art and can be adjusted accordingly according to specific requirements.

[0056] The present invention is described in detail below by way of examples. It is necessary to point out here that the following examples are only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Some non-essential improvements and adjustments made by professionals and technicians in this field based on the content of the present invention above still belong to the scope of protection of the present invention.

[0057] Example 1

[0058] This embodiment provides a laser welded polyphenylene ether alloy, which comprises the following components in parts by weight:

[0059] 60 parts by weight of a high melt index polyphenylene ether resin;

[0060] 5 parts by weight of modified polyphenylene ether resin;

[0061] 12 parts by weight of high impact polystyrene;

[0062] 0.3 parts by weight of an antioxidant;

[0063] 1.0 parts by weight of lubricant;

[0064] 11 parts by weight of BDP flame retardant;

[0065] 0.4 parts by weight of an anti-drip agent;

[0066] 4 parts by weight of a toughening agent;

[0067] 1.5 parts by weight of a compatibilizer;

[0068] 5 parts by weight of black seed;

[0069] The high melt index polyphenylene ether resin is LXN035, the modified polyphenylene ether resin is a low molecular weight polyphenylene ether resin SEM-12 (number average molecular weight of about 2200, hydroxyl content of 1100g / mol) terminated with double hydroxyl groups; the melt index of the high impact polystyrene at 200°C and 5kg load is 4.8g / 10min (Huizhou Renxin RH-825); the antioxidant is The lubricant is EccoGrease SG10-2 multifunctional silicone grease; the BDP flame retardant is bisphenol A bis(diphenyl phosphate); the anti-dripping agent is Entropy Energy Innovation Material SN3300B7; the toughening agent is Kraton G1654 SEBS; the compatibilizer is Jiayirong Polymer FB820 (PPO-g-MAH); the black seed is a mixture of 1-(methylamino)anthraquinone, 1,4-di[(2-phenylethyl)amino]anthraquinone and N,N-dimethoxybenzyl substituted perylene diimide, and the mass ratio is 1:1:4.

[0070] Example 2

[0071] This embodiment provides a laser welded polyphenylene ether alloy, which comprises the following components in parts by weight:

[0072] 60 parts by weight of a high melt index polyphenylene ether resin;

[0073] 12 parts by weight of high impact polystyrene;

[0074] 0.3 parts by weight of an antioxidant;

[0075] 1.0 parts by weight of lubricant;

[0076] 11 parts by weight of BDP flame retardant;

[0077] 0.4 parts by weight of an anti-drip agent;

[0078] 4 parts by weight of a toughening agent;

[0079] 1.5 parts by weight of a compatibilizer;

[0080] 5 parts by weight of black seed;

[0081] The high melt index polyphenylene ether resin is LXN035, the high impact polystyrene has a melt index of 4.8 g / 10 min at 200° C. and 5 kg load (Huizhou Renxin RH-825); the antioxidant is The lubricant is EccoGrease SG10-2 multifunctional silicone grease; the BDP flame retardant is bisphenol A bis(diphenyl phosphate); the anti-dripping agent is Entropy Energy Innovation Material SN3300B7; the toughening agent is Kraton G1654 SEBS; the compatibilizer is Jiayirong Polymer FB820 (PPO-g-MAH); the black seed is a mixture of 1-(methylamino)anthraquinone, 1,4-di[(2-phenylethyl)amino]anthraquinone and N,N-dimethoxybenzyl substituted perylene diimide, and the mass ratio is 1:1:4.

[0082] Example 3

[0083] This embodiment provides a laser welded polyphenylene ether alloy, which comprises the following components in parts by weight:

[0084] 60 parts by weight of a high melt index polyphenylene ether resin;

[0085] 5 parts by weight of modified polyphenylene ether resin;

[0086] 12 parts by weight of high impact polystyrene;

[0087] 0.3 parts by weight of an antioxidant;

[0088] 1.0 parts by weight of lubricant;

[0089] 11 parts by weight of BDP flame retardant;

[0090] 0.4 parts by weight of an anti-drip agent;

[0091] 4 parts by weight of a toughening agent;

[0092] 1.5 parts by weight of a compatibilizer;

[0093] 5 parts by weight of black seed;

[0094] The high melt index polyphenylene ether resin is LXN035, the modified polyphenylene ether resin is a low molecular weight polyphenylene ether resin SEM-12 (number average molecular weight of about 2200, hydroxyl content of 1100g / mol) terminated with double hydroxyl groups; the melt index of the high impact polystyrene at 200°C and 5kg load is 7.9g / 10min (Shandong Yuhuang GPPS525); the antioxidant is The lubricant is EccoGrease SG10-2 multifunctional silicone grease; the BDP flame retardant is bisphenol A bis(diphenyl phosphate); the anti-dripping agent is Entropy Energy Innovation Material SN3300B7; the toughening agent is Kraton G1654 SEBS; the compatibilizer is Jiayirong Polymer FB820 (PPO-g-MAH); the black seed is a mixture of 1-(methylamino)anthraquinone, 1,4-di[(2-phenylethyl)amino]anthraquinone and N,N-dimethoxybenzyl substituted perylene diimide, and the mass ratio is 1:1:4.

[0095] Example 4

[0096] This embodiment provides a laser welded polyphenylene ether alloy, which comprises the following components in parts by weight:

[0097] 60 parts by weight of a high melt index polyphenylene ether resin;

[0098] 5 parts by weight of modified polyphenylene ether resin;

[0099] 12 parts by weight of high impact polystyrene;

[0100] 0.3 parts by weight of an antioxidant;

[0101] 1.0 parts by weight of lubricant;

[0102] 11 parts by weight of BDP flame retardant;

[0103] 0.4 parts by weight of an anti-drip agent;

[0104] 4 parts by weight of a toughening agent;

[0105] 1.5 parts by weight of a compatibilizer;

[0106] 5 parts by weight of black seed;

[0107] The high melt index polyphenylene ether resin is LXN035, the modified polyphenylene ether resin is a low molecular weight polyphenylene ether resin SEM-12 (number average molecular weight of about 2200, hydroxyl content of 1100g / mol) terminated with double hydroxyl groups; the melt index of the high impact polystyrene at 200°C and 5kg load is 4.8g / 10min (Huizhou Renxin RH-825); the antioxidant is The lubricant is EccoGrease SG10-2 multifunctional silicone grease; the BDP flame retardant is bisphenol A bis(diphenyl phosphate); the anti-dripping agent is Entropy Energy Innovation Material SN3300B7; the toughening agent is Kraton G1654 SEBS; the compatibilizer is Jiayirong Polymer FB820 (PPO-g-MAH); the black seed is a mixture of 1,4-di[(2-phenylethyl)amino]anthraquinone and N,N-dimethoxybenzyl substituted perylene diimide, and the mass ratio is 1:2.

[0108] Example 5

[0109] This embodiment provides a laser welded polyphenylene ether alloy, which comprises the following components in parts by weight:

[0110] 60 parts by weight of a high melt index polyphenylene ether resin;

[0111] 5 parts by weight of modified polyphenylene ether resin;

[0112] 12 parts by weight of high impact polystyrene;

[0113] 0.3 parts by weight of an antioxidant;

[0114] 1.0 parts by weight of lubricant;

[0115] 11 parts by weight of BDP flame retardant;

[0116] 0.4 parts by weight of an anti-drip agent;

[0117] 4 parts by weight of a toughening agent;

[0118] 1.5 parts by weight of a compatibilizer;

[0119] 5 parts by weight of black seed;

[0120] The high melt index polyphenylene ether resin is LXN035, the modified polyphenylene ether resin is a low molecular weight polyphenylene ether resin SEM-12 (number average molecular weight of about 2200, hydroxyl content of 1100g / mol) terminated with double hydroxyl groups; the melt index of the high impact polystyrene at 200°C and 5kg load is 4.8g / 10min (Huizhou Renxin RH-825); the antioxidant is The lubricant is EccoGrease SG10-2 multifunctional silicone grease; the BDP flame retardant is bisphenol A bis(diphenyl phosphate); the anti-dripping agent is Entropy Energy Innovation Material SN3300B7; the toughening agent is Kraton G1654 SEBS; the compatibilizer is Jiayirong Polymer FB820 (PPO-g-MAH); the black seed is a mixture of 1-(methylamino) anthraquinone and N,N-dimethoxybenzyl substituted perylene diimide, with a mass ratio of 1:2.

[0121] Example 6

[0122] This embodiment provides a laser welded polyphenylene ether alloy, which comprises the following components in parts by weight:

[0123] 60 parts by weight of a high melt index polyphenylene ether resin;

[0124] 5 parts by weight of modified polyphenylene ether resin;

[0125] 12 parts by weight of high impact polystyrene;

[0126] 0.3 parts by weight of an antioxidant;

[0127] 1.0 parts by weight of lubricant;

[0128] 11 parts by weight of BDP flame retardant;

[0129] 0.4 parts by weight of an anti-drip agent;

[0130] 4 parts by weight of a toughening agent;

[0131] 1.5 parts by weight of a compatibilizer;

[0132] 5 parts by weight of black seed;

[0133] The high melt index polyphenylene ether resin is LXN035, the modified polyphenylene ether resin is a low molecular weight polyphenylene ether resin SEM-12 (number average molecular weight of about 2200, hydroxyl content of 1100g / mol) terminated with double hydroxyl groups; the melt index of the high impact polystyrene at 200°C and 5kg load is 4.8g / 10min (Huizhou Renxin RH-825); the antioxidant is The lubricant is EccoGrease SG10-2 multifunctional silicone grease; the BDP flame retardant is bisphenol A bis(diphenyl phosphate); the anti-dripping agent is Entropy Energy Innovation Material SN3300B7; the toughening agent is Kraton G1654 SEBS; the compatibilizer is Jiayirong Polymer FB820 (PPO-g-MAH); the black seed is a mixture of 1-(methylamino)anthraquinone and 1,4-di[(2-phenylethyl)amino]anthraquinone, and the mass ratio is 1:1.

[0134] Example 7

[0135] This embodiment provides a laser welded polyphenylene ether alloy, which comprises the following components in parts by weight:

[0136] 60 parts by weight of a high melt index polyphenylene ether resin;

[0137] 5 parts by weight of modified polyphenylene ether resin;

[0138] 12 parts by weight of high impact polystyrene;

[0139] 0.3 parts by weight of an antioxidant;

[0140] 1.0 parts by weight of lubricant;

[0141] 11 parts by weight of BDP flame retardant;

[0142] 0.4 parts by weight of an anti-drip agent;

[0143] 4 parts by weight of a toughening agent;

[0144] 1.5 parts by weight of a compatibilizer;

[0145] 5 parts by weight of black seed;

[0146] The high melt index polyphenylene ether resin is LXN035, the modified polyphenylene ether resin is a low molecular weight polyphenylene ether resin SEM-12 (number average molecular weight of about 2200, hydroxyl content of 1100g / mol) terminated with double hydroxyl groups; the melt index of the high impact polystyrene at 200°C and 5kg load is 4.8g / 10min (Huizhou Renxin RH-825); the antioxidant is The lubricant is EccoGrease SG10-2 multifunctional silicone grease; the BDP flame retardant is bisphenol A bis(diphenyl phosphate); the anti-dripping agent is Entropy Energy Innovation Material SN3300B7; the toughening agent is Kraton G1654 SEBS; the compatibilizer is Jiayirong Polymer FB820 (PPO-g-MAH); and the black seed is N,N-dimethoxybenzyl substituted perylene diimide.

[0147] Performance Testing

[0148] The applicant measures polyphenylene ether material, high impact polystyrene, antioxidant, lubricant, BDP flame retardant, anti-dripping agent, toughening agent, compatibilizer and black component according to the required ratio for the laser welding polyphenylene ether alloy material in the above embodiment, and adds the components except BDP flame retardant into a high-speed mixer and stirs evenly to obtain a premix; then the temperature of the twin-screw extruder is set and heated to the set temperature (wherein each zone: 270°C, 275°C, 275°C, 270°C, 240°C, 245°C, 250°C, 255°C; die 275°C); then the premix is ​​added to the twin-screw extruder, the BDP flame retardant is side-fed, the speed is adjusted to 420rpm, the material is melt-extruded in the twin-screw extruder, granulated, and after post-treatment, test samples of the same specifications are obtained, and various performance tests are carried out; specifically:

[0149] 1) According to ISO0527 international standard, all the above samples were tested for tensile strength performance, with a tensile speed of 50mm / min and a sample size of 150mm*10mm*4mm;

[0150] 2) Perform bending performance test according to ISO178 standard (bending rate 2mm / min);

[0151] 3) The notched impact performance test was carried out according to ISO180 / 1A standard, and the specimen size was 80mm*10mm*4mm; the test results are shown in Table 1.

[0152] Table 1 Mechanical properties results

[0153] Tensile strength / MPa Bending strength / MPa <![CDATA[Impact strength / (kJ / m 2 )]]> Example 1 67 98 18 Example 2 60 94 19 Example 3 62 95 11 Example 4 66 99 16 Example 5 66 98 17 Example 6 64 95 17 Example 7 67 97 15

[0154] 4) The above samples were made into 1.5 mm thick strips by injection molding, and the flame retardant properties were tested according to UL94 standard;

[0155] 5) The above samples were made into 1.5 mm thick strips by injection molding, and the infrared light (wavelength range of 780 to 1200 nm, peak value 980 nm) transmittance of the above samples was tested using an LPKF TMG3 laser transmittance tester, wherein: the measuring aperture diameter was 3 mm, and the focused spot diameter was approximately 1.2 mm; the test results are shown in Table 2.

[0156] Table 2 Other performance results

[0157] Flame retardant properties Infrared light transmittance Example 1 V0@1.5mm 35％ Example 2 V0@1.5mm 36％ Example 3 V0@1.5mm 32％ Example 4 V0@1.5mm 29％ Example 5 V0@1.5mm 28％ Example 6 V0@1.5mm 26％ Example 7 V0@1.5mm 25％

[0158] In addition, the applicant conducted a heat deformation temperature test (1.8MPa) on the samples in the above embodiments according to the ISO75 international test standard, and the heat deformation temperature of all the tested samples can exceed 120° C. Moreover, the applicant's subjective visual evaluation of the samples in the above embodiments shows that the samples have high gloss and excellent material quality, and can be more widely used in more technical fields.

[0159] It can be seen from the above test results that the present invention optimizes and adjusts the key components of laser welding polyphenylene ether alloy accordingly, significantly improves the tensile strength, bending strength, impact strength, etc. of PPE-HIPS alloy material, and effectively improves the transmittance of infrared light, so that the alloy material can have a stronger welding force during laser welding, and ensure that the glossiness of the welding interface and the surface of the material after welding is not significantly affected. Specifically, by introducing an appropriate amount of modified polyphenylene ether (small molecular weight functionalized polyphenylene ether) into the polyphenylene ether resin, matching PPE and HIPS with a specific melt index, and adding a specific compatibilizer, it is ensured that the various components of the alloy material can be fully mixed and diffused, avoiding the stress concentration caused by the uneven diffusion between the components of the material, the decline of mechanical properties and other problems. At the same time, the specific components and proportions of the black species are further optimized, thereby further improving the transmittance of PPE-HIPS alloy material to infrared light, making it reach more than 30%, effectively expanding its application range in the field of laser welding.

[0160] The above is only an exemplary embodiment of the present disclosure, and the scope of the present disclosure cannot be limited thereto. That is, any equivalent changes and modifications made according to the teachings of the present disclosure are still within the scope of the present disclosure. After considering the specification and practicing the disclosure here, those skilled in the art will easily think of the implementation scheme of the present disclosure. This application is intended to cover any modification, use or adaptation of the present disclosure, which follows the general principles of the present disclosure and includes common knowledge or customary technical means in the technical field not recorded in the present disclosure. The description and examples are regarded as exemplary only, and the scope and spirit of the present disclosure are defined by the claims.

Claims

1. A laser welding polyphenylene ether alloy, characterized in that: It contains the following components in parts by weight: 60-70 parts by weight of polyphenylene ether material; 8 to 16 parts by weight of high impact polystyrene; 0.2-0.4 parts by weight of an antioxidant; 0.8 to 1.2 parts by weight of a lubricant; 10 to 12 parts by weight of BDP flame retardant; 0.3-0.5 parts by weight of an anti-dripping agent; 3 to 5 parts by weight of a toughening agent; 1 to 2 parts by weight of a compatibilizer; 3 to 5 parts by weight of black seed; The toughening agent is SEBS; the black seed is a black light-transmitting composition.

2. The laser welding polyphenylene ether alloy according to claim 1, characterized in that: The black light-transmitting composition comprises anthraquinone derivatives and perylene diimide derivatives; preferably, the laser-welded polyphenylene ether alloy has a light transmittance of not less than 30% within a wavelength range of 780 to 1200 nm and a thickness of 1.0 to 2.0 mm.

3. The laser welding polyphenylene ether alloy according to claim 2, characterized in that: The anthraquinone derivatives are selected from one or more of 1-(methylamino)anthraquinone, 1-methylaminoanthraquinone, 1,4-diamino-2-bromoanthraquinone, 1-[(1-methylethyl)amino]-4-[(4-methylphenyl)amino]anthraquinone, 1-amino-5-benzamidoanthraquinone, hydroxyanthraquinone, methoxyanthraquinone, 1,4-di-p-toluaminoanthraquinone, 1,4-di[(2-phenylethyl)amino]anthraquinone, and 1-(((2S)-2-hydroxy-3-(1-piperidinyl)propyl)amino)-4-(((2S)-2-oxiranylmethyl)amino)-9,10-anthraquinone.

4. The laser welding polyphenylene ether alloy according to claim 2, characterized in that: The perylene diimide derivative is selected from one or more of N,N-dimethoxybenzyl substituted perylene diimide, N,N-dimethoxyphenyl substituted perylene diimide and N,N-diphenyl substituted perylene diimide.

5. The laser welded polyphenylene ether alloy according to any one of claims 2 to 4, characterized in that: The mass ratio of the anthraquinone derivative to the perylene diimide derivative is 1:(1-3).

6. The laser welded polyphenylene ether alloy according to claim 5, characterized in that: The polyphenylene ether material comprises a high melt index polyphenylene ether resin, and the melt index of the high melt index polyphenylene ether resin is 6 to 35 g / 10 min at 300° C. and a load of 10 kg.

7. The laser welding polyphenylene ether alloy according to claim 6, characterized in that: The polyphenylene ether material also includes a low molecular weight polyphenylene ether resin terminated with double-end hydroxyl groups, and the hydroxyl content of the low molecular weight polyphenylene ether resin terminated with double-end hydroxyl groups is 1000-1200 g / mol.

8. The laser welding polyphenylene ether alloy according to claim 5, characterized in that: The compatibilizer is a maleic anhydride grafted polymer, and the maleic anhydride grafted polymer is maleic anhydride grafted polyphenylene ether and / or maleic anhydride grafted SEBS.

9. The laser welding polyphenylene ether alloy according to claim 5, characterized in that: The HIPS has a melt index of 2 to 5.5 g / 10 min at 200° C. and a load of 5 kg.

10. The method for preparing a laser welded polyphenylene ether alloy according to any one of claims 1 to 9, characterized in that: It includes the following steps: Step 1: Take polyphenylene ether material, high impact polystyrene, antioxidant, lubricant, BDP flame retardant, anti-dripping agent, toughening agent, compatibilizer and black component according to the required ratio; Step 2: adding the polyphenylene ether material, high impact polystyrene, antioxidant, lubricant, anti-dripping agent, toughening agent, compatibilizer and black seed component into a high-speed mixer and stirring evenly to obtain a premix; Step 3: adding the premix into a twin-screw extruder, feeding the BDP flame retardant on the side, melting and mixing, extruding, vacuum granulating, and post-processing to obtain the product.