Tire

Abstract

A tire having high peeling resistance is provided, so that an electronic component mounting member is less likely to peel from the surface of the tire even when a large impact is applied to the tire during high-speed travel in a low-temperature environment. In the tire, an electronic component mounting member for incorporating an electronic component is mounted on the surface of a tire inner member, the electronic component mounting member includes an electronic component storage portion for storing the electronic component and an engaging portion having an engaging surface for mounting the electronic component mounting member on the surface of the tire inner member, and the engaging portion has a complex elastic modulus E * r (MPa) and a complex elastic modulus E * i (MPa) of the tire inner member at 0°C satisfy the following (Formula 1). E * r / E * i <1 (Formula 1).

Description

Technical Field

[0001] This disclosure relates to a tire in which an electronic component mounting component containing electronic components is disposed on the surface of an internal tire component arranged in the tire bore. Background Technology

[0002] In order to make vehicles ride comfortably, it is considered important to properly manage the air pressure of the installed tires. In recent years, the installation of tire pressure monitoring systems (TPMS) inside the tires has become increasingly common (e.g., Patent Documents 1 to 4).

[0003] [Existing Technical Documents]

[0004] [Patent Literature]

[0005] [Patent Document 1] JP 2018-016185 A

[0006] [Patent Document 2] JP2018-199396A

[0007] [Patent Document 3] JP2019-023594A

[0008] [Patent Document 4] JP2019-026218A Summary of the Invention

[0009] [The problem this invention aims to solve]

[0010] Sensors such as TPMS are typically electronic components made of metal, so if they are directly attached to a rubber tire, there is a concern that they may peel off during rolling. In particular, when a vehicle experiences a significant impact at high speeds in cold conditions (such as driving over a step), there is a concern that the mounting components of the electronic components may detach from the tire surface.

[0011] Therefore, the purpose of this disclosure is to provide a tire with excellent peel resistance, so that electronic components are difficult to peel off from the tire surface even when subjected to large impacts during high-speed driving in low-temperature environments.

[0012] [Problem-solving methods]

[0013] The author of this disclosure has conducted in-depth research on how to solve the above problems, discovered that the above problems can be solved by the disclosure described below, and thus completed this disclosure.

[0014] This disclosure relates to a tire in which electronic component mounting parts for incorporating electronic components are mounted on the surface of internal tire components, wherein...

[0015] The electronic component mounting component has an electronic component storage section for storing the electronic component, and a mating section having a mating surface for mounting the electronic component mounting component to the surface of the tire internal component; and

[0016] The composite elastic modulus E of the joint at 0°C * r (MPa) and the composite elastic modulus E of the tire internal components at 0°C * i (MPa) satisfies the following (Equation 1).

[0017] E * r / E * i < 1 (Equation 1)

[0018] [Invention Effects]

[0019] According to this disclosure, a tire with excellent peel resistance can be provided, wherein electronic components are unlikely to peel off from the tire surface even when subjected to a large impact during high-speed driving in low-temperature environments. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view showing the construction of a tire according to one embodiment of the present disclosure.

[0021] Figure 2 (A) is a diagram showing the shape of the tread surface of a tire according to another embodiment of the present disclosure, and (B) is a cross-sectional view showing the structure of a tire according to another embodiment of the present disclosure.

[0022] Figure 3 (A) is a perspective view of an electronic component mounting component according to an embodiment of the present disclosure, viewed from the side facing the mating surface, and (B) is a perspective view viewed from the mating surface side.

[0023] Figure 4 This is a perspective view of an electronic component mounting component according to another embodiment of the present disclosure, viewed from the side facing the mating surface. Detailed Implementation

[0024] [1] Features of the tires disclosed herein

[0025] First, the characteristics of the tire disclosed herein will be explained.

[0026] 1. Overview

[0027] The tire disclosed herein is a tire in which an electronic component mounting member for incorporating electronic components is mounted on the surface of a tire internal component disposed within the tire bore. The electronic component mounting member has an electronic component storage portion for storing the electronic components, and a mating portion having a mating surface for mounting the electronic component mounting member to the surface of the tire internal component. Furthermore, the composite elastic modulus E of the mating portion at 0°C... * r (MPa) and the composite elastic modulus E of the tire internal components at 0°C * i (MPa) satisfies the following (Equation 1).

[0028] E * r / E * i < 1 (Equation 1)

[0029] By using the tire described above, as explained below, a tire with excellent peel resistance can be provided, wherein even when subjected to a large impact during high-speed driving in low-temperature conditions, the electronic component mounting parts are unlikely to peel off from the tire surface.

[0030] In the description above, E * r and E * i The results were obtained in accordance with JIS K 6394 using a viscoelasticity measuring device such as the "Eplexor" series manufactured by GABO under the following conditions: measuring temperature: 0℃, initial strain: 10%, dynamic strain: ±1%, frequency: 10Hz, deformation mode: elongation.

[0031] 2. The performance mechanism of the tire disclosed herein

[0032] The performance mechanism of the tire disclosed herein is believed to be as follows.

[0033] Tires are made of rubber, but rubber tends to harden at low temperatures, making it less flexible in responding to tire deformation that occurs during driving. Therefore, when a large impact is applied to the tire during high-speed driving in cold conditions (such as driving over a curb), the impact is transmitted through the tire's internal components to the electronic component mounting components, and there is a risk that these components may detach from the tire and fall off during driving.

[0034] Therefore, in this disclosure, the rigidity of the electronic component mounting component is lower than that of the internal tire components. Specifically, the composite elastic modulus E of the joint at 0°C is... * r(MPa) and the composite elastic modulus E of tire internal components at 0°C * i (MPa) satisfies E * r / E * i <1(Equation 1). E * r / E * i More preferably less than 0.95, even more preferably less than 0.93, even more preferably less than 0.9, even more preferably less than 0.86, even more preferably less than 0.85, even more preferably less than 0.83. E * r / E * i There is no limit to the lower limit, but it is preferably 0.1 or more, more preferably 0.5 or more, even more preferably 0.7 or more, even more preferably 0.71 or more, and even more preferably 0.72 or more.

[0035] specific E * r For example, it is preferably 1 MPa or more, more preferably 10 MPa or more, even more preferably 20 MPa or more, even more preferably 21 MPa or more, even more preferably 23 MPa or more, even more preferably 24 MPa or more, even more preferably 25 MPa or more, and even more preferably 27 MPa or more. On the other hand, it is preferably 40 MPa or less, more preferably 35 MPa or less, and even more preferably 30 MPa or less.

[0036] specific E * i For example, it is preferably 1 MPa or more, more preferably 10 MPa or more, even more preferably 20 MPa or more, even more preferably 27 MPa or more, and even more preferably 29 MPa or more. On the other hand, it is preferably 50 MPa or less, more preferably 45 MPa or less, even more preferably 40 MPa or less, and even more preferably 35 MPa or less.

[0037] Therefore, when the rigidity of the electronic component mounting parts is lower than the rigidity of the internal tire parts, that is, when E is satisfied... * r / E * i When <1 (Equation 1), even when a large impact is applied to the tire, the impact on the internal components of the tire is reduced and transmitted to the low-rigidity electronic component mounting components. Therefore, the electronic component mounting components also deform flexibly and sufficiently suppress the occurrence of peeling from the tire surface, and are considered to exhibit excellent peel resistance.

[0038] 3. Preferred embodiments of the tire disclosed herein.

[0039] Furthermore, the tire disclosed herein is preferably implemented in the following manner.

[0040] (1) Wear tangent of internal tire components

[0041] As stated above, the tire of this disclosure satisfies E * r / E * i <1 (Equation 1). At this time, the wear tangent of the internal components of the tire at 0℃ (0℃ tanδ) i Preferably, it is 0.55 or less, more preferably 0.45 or less, even more preferably 0.35 or less, and even more preferably 0.34 or less. There is no limitation on the lower limit, but for example, it is preferably 0.1 or more, more preferably 0.2 or more, even more preferably 0.3 or more, and even more preferably 0.32 or more.

[0042] This is because when the 0℃ tanδ of the tire's internal components is large, the heat generated by these components increases, and they tend to soften during high-speed driving. As a result, the amplitude of the electronic component mounting components increases, and the peel resistance effect is considered to decrease due to satisfying equation (1). By controlling the 0℃ tanδ of the tire's internal components to a smaller value, it is believed that the peel resistance effect is synergistically improved in combination with the impact reduction effect brought about by satisfying equation (1). Note that this 0℃ tanδ... i For example, viscoelasticity measuring devices such as the "Eplexor" series manufactured by GABO can be used to measure the aforementioned E... * r and E * i The same method was used to measure the strain under the following conditions: measurement temperature: 0℃, initial strain: 10%, dynamic strain: ±2.5%, frequency: 10Hz, deformation mode: tension.

[0043] (2) Thickness from the inner surface of the carcass layer to the inner surface of the tire's internal components

[0044] The tire disclosed herein has at least one carcass layer on the radially inner side of the tread portion, and the thickness d from the radially inner surface of the innermost carcass layer to the radially inner surface of the tire's internal components is... i The thickness (mm) is preferably 0.6 mm or more. The carcass layers and tire internal components can have various forms. For example, there can be two carcass layers, or another rubber layer can be arranged between the carcass layers and the tire internal components. Then, for example, when another rubber layer is arranged between the carcass layers and the liner, which is a tire internal component, the thickness d... i The dimensions become the thickness of the rubber layer.

[0045] When the thickness d i When insufficient, the impact on the outer surface of the tire will be transmitted to the electronic component mounting parts without being adequately mitigated, and the peel resistance effect brought about by satisfying formula (1) will be reduced.

[0046] By using thickness d i Setting the thickness to 0.6mm or higher can significantly reduce the impact on the tire's outer surface. Combined with the impact reduction effect achieved by satisfying (Equation 1), the peel resistance is considered to be synergistically improved. From this perspective, thickness d... i More preferably, it is 0.7 mm or more, even more preferably 0.8 mm or more, and even more preferably 1.0 mm or more. There is no upper limit, but for example, it is preferably 30 mm or less, more preferably 20 mm or less, and even more preferably 10 mm or less.

[0047] (3) Glass transition point of electronic component mounting parts and tire internal parts

[0048] Because the physical properties of rubber and plastics, such as rigidity and viscosity, change rapidly at the glass transition point (Tg) boundary, it is considered that impacts are likely to be absorbed near Tg. Therefore, it is preferred to have a glass transition point Tg of the joint. r (°C) Higher than the glass transition point Tg of the tire's internal components i (°C). That is, it is preferable to satisfy Tg. i -Tg r <0 (Equation 2). This is considered to make the joint more susceptible to absorbing impacts within the high-temperature range. Tg i -Tg r Preferably less than -5°C, more preferably less than -10°C, and even more preferably less than -13°C. Tg i -Tg r There is no limit to the lower limit, but it is preferred, for example, to be -90 (°C) or higher.

[0049] Specific Tg i For example, it is preferably -100°C or higher, more preferably -70°C or higher, even more preferably -50°C or higher, and even more preferably -35°C or higher. On the other hand, it is preferably below 0°C, more preferably below -10°C, even more preferably below -20°C, even more preferably below -26°C, even more preferably below -28°C, and even more preferably below -30°C. Furthermore, similarly, the specific Tg... rFor example, it is preferably -100°C or higher, more preferably -70°C or higher, and even more preferably -50°C or higher. On the other hand, it is preferably below 0°C, more preferably below -10°C, even more preferably below -20°C, even more preferably below -22°C, even more preferably below -25°C, more preferably below -26°C, even more preferably below -30°C, and even more preferably below -31°C. [2] Detailed Implementation

[0051] Next, specific embodiments of this disclosure will be described. In the following description, as an example, a rubber electronic component mounting component is used as an electronic component mounting component, and an inner liner is used as an internal tire component. However, they are not particularly limited as long as (Equation 1) is satisfied, and plastic electronic component mounting components or internal tire components other than the inner liner can be used.

[0052] 1. Tire Construction

[0053] Figure 1 This is a cross-sectional view showing the structure of the tire according to this embodiment. Figure 1 In this diagram, 1 is the tire, 2 is the electronic component mounting component, 11 is the tread, 12 is the belt, 13 is the sidewall, 14 is the carcass layer, 15 is the bead core, 16 is the bead triangle rubber, 17 is the bead wrapping, 18 is the clamping part, 19 is the tire internal component (liner), and 31 is the circumferential groove. Additionally, I is the inner surface of the tire bore, and CL is the centerline in the tire width direction.

[0054] like Figure 1 As shown, the electronic component mounting component 2 is placed on the inner surface I of the tire bore, i.e., on the surface of the inner liner 19. In order to obtain monitoring information with high accuracy and stability, the electronic component mounting component is preferably arranged such that, in the tire cross-section, the center of the electronic component mounting component is located in the two central regions closest to the tire equator among four regions, said four regions being separated by a line extending radially parallel to the tire, starting from a line dividing the area between the two ground contact edges forming the tread contact width into four equal parts. As an example, Figure 1 An example is shown where the electronic component mounting member 2 is mounted on the center portion (i.e., centerline CL) of the tire's bore surface in the tire width direction. Although not shown, the electronic components are integrated into the electronic component mounting member 2. Here, due to the particularly large amount of deformation on the tire's centerline CL, it is preferable that the centers of CL and the electronic component mounting member are offset, and the width of this offset is preferably 1 to 50 mm in the tire axial direction.

[0055] Figure 2 This is a diagram of a tire according to another embodiment of the present disclosure, wherein (A) is a diagram showing the surface shape of the tread, and (B) is a cross-sectional view showing the tire's construction. Figure 2In (A), VL represents the two grounding terminals that form the tread contact width and the dashed line that divides the two grounding terminals into four equal parts. Figure 2 In section B, cl is the centerline of the electronic component mounting component 2, and m is the offset of the center of the electronic component mounting component from the tire centerline CL. Regions 34 and 35 are divided into four equal parts by the dashed line VL, with 34 being the region closest to the tire's equatorial plane and 35 being the outer region along the tire's axial direction. Figure 2 In (A), 32d is the central lateral groove, and 32a is a lateral groove with a decorative groove at the outer end along the tire axial direction. In addition, 33 is a tread groove (sipe).

[0056] In the tire of this embodiment, a circumferential groove 31 is formed on the tire's centerline CL (i.e., the equator) on the surface 3 of the tread, and a circumferential groove 31 is formed on each side thereof. In a tire in which the circumferential groove 31 is formed on the equator in this manner, it is preferable that the center of the electronic component mounting component is located in the two central regions 34 closest to the tire's equatorial plane among the four regions. These four regions are separated by a dashed line VL extending radially parallel to the tire, starting from a line that divides the distance between the two ground edges and the ground edges into four equal parts. Specifically, the four regions are separated by a dashed line VL extending perpendicularly to the contour of the tire surface, starting from a position on the contour that divides the two ground edges into four equal parts.

[0057] Here, "the two grounding edges that form the tread contact width" refers to the edges that form the maximum straight-line distance in the axial direction with the contact surface of the flat plate when the tire is mounted on a "standardized rim," subjected to "standardized internal pressure," and fixed in a vertical position on a flat plate, and then subjected to a "standardized load." Specifically, for example, it can be specified by applying a "standardized load" to a tire with ink on its tread surface, pressing it onto cardboard, and transferring the ink.

[0058] In addition, for example, it can be confirmed whether the electronic component mounting part is located in the two central regions of the four regions divided by equally dividing the area between the two ground edges into four regions, which are closest to the tire equator: transcribing the ground edge position on a cross section cut into segments about 2 cm wide, and dividing the tire into four equal parts along the surface contour.

[0059] The grooves formed on the surface of the tread can be determined from the tread profile, which is obtained by measuring the radius formed on the tread surface of a tire mounted on a standardized rim with "standardized internal pressure" applied and under no-load conditions. Specifically, for example, it can be easily measured by fixing a segment of approximately 2 cm wide cut radially into the bead portion according to the applicable rim width.

[0060] The aforementioned "standardized rim" refers to a rim defined for each tire within a standard system, including the standard upon which the tire is based. For example, in the case of JATMA (Japan Automobile Tire Association), it is a standardized rim of the applicable size described in the "JATMA YEAR BOOK"; in the case of ETRTO (European Tyre and Rim Technology Organization), it is a "measuring rim" described in "STANDARDSMANUAL"; and in the case of TRA (Tire and Rim Association), it is a "design rim" described in the "YEAR BOOK". For tires not specified in the standard, it refers to a rim that can be assembled and maintain internal pressure, i.e., a rim that does not cause air leakage between the rim and the tire, and has the smallest rim diameter followed by the narrowest rim width.

[0061] "Standardized internal pressure" refers to the air pressure specified for each tire according to the above standards. For JATMA, it is the maximum air pressure; for TRA, it is the maximum value described in the table "Tire Load Limits at Various Cold Inflation Pressures"; and for ETRTO, it is the "Inflation Pressure".

[0062] In addition, "standardized load" is the load specified for each tire according to the above standards, and refers to the maximum mass that can be loaded on the tire; for JATMA, it is the maximum load capacity; for TRA, it is the maximum value described in "Tire Load Limits at Various Cold Inflation Pressures"; and for ETRTO, it is "Load Capacity".

[0063] Next, the electronic component mounting component 2 has an electronic component storage section for storing electronic components, and a joint section for mounting the electronic component mounting component 2 on the surface of the inner liner 19.

[0064] Figure 3 (A) is a perspective view of the electronic component mounting component 2 in this embodiment, viewed from the side opening, and Figure 3 (B) is a perspective view taken from the mating surface side. Furthermore, Figure 4 This is a perspective view of another embodiment of the electronic component mounting component 2, viewed from the side facing the mating surface.

[0065] exist Figure 3 and 4 In the diagram, 21 is the electronic component storage section, 22 is the joining section, A is the joining surface to be joined to the inner liner 19, E1 is the upper end of the electronic component storage section 21 facing the joining surface, E2 is the lower end of the electronic component storage section on the joining surface side, and S is the storage space for electronic components. Figure 3 In A, D is the diameter (outer diameter) of the mating surface, T is the thickness of the mating part, W is the width of the flange, and H is the thickness (height) of the electronic component mounting part.

[0066] like Figure 3 and Figure 4 As shown, the electronic component storage section 21 is cylindrical and has an internal storage space S for electronic components. A flange-shaped joint 22 is formed at the lower end E2 of the electronic component storage section 21, and a joint surface A is formed on the lower surface of the joint 22. By forming the joint 22 as a flange, the size of the joint surface A can be increased, and sufficient bonding area with the internal components of the tire can be ensured, thereby further improving the bonding strength.

[0067] The cross-sectional shape, size, and depth of the storage space S are appropriately determined according to the shape and size of the electronic component to be stored. For the shape of the cross-section, for example, in addition to the circle shown in the figure, an ellipse or polygon can also be appropriately provided. The sidewall of the cylinder is not perpendicular to the joint 22, and is preferably formed in a truncated cone shape, such that the cross-sectional size of the storage space S is larger on the lower end E2 side and smaller on the upper end E1 side.

[0068] Preferably, the lower end E2 side of the electronic component storage section 21 is formed to be open. As a result, for example, the sensor can directly contact the internal tire components of the tire and can obtain accurate information with higher sensitivity. On the other hand, as... Figure 3 As shown in (A), the upper end E1 side is preferably open. As a result, electronic components can be detachably installed and easily replaced. Figure 4 As shown, the upper E1 side can be closed. In this case, the electronic components can be stored in a sealed manner in the storage space S and placed in a stable environment.

[0069] The diameter (outer diameter) D of the mating surface A is preferably 20 mm or more, more preferably 25 mm or more, and even more preferably 30 mm or more. On the other hand, it is preferably 60 mm or less, more preferably 55 mm or less, and even more preferably 50 mm or less.

[0070] The thickness (height) H of the electronic component mounting component is preferably 10 mm or more, more preferably 15 mm or more, and even more preferably 20 mm or more. On the other hand, it is preferably 40 mm or less, more preferably 35 mm or less, and even more preferably 30 mm or less.

[0071] The thickness T of the joint is preferably 0.5 mm or more, more preferably 0.6 mm or more, and even more preferably 0.8 mm or more. On the other hand, it is preferably 1.4 mm or less, more preferably 1.3 mm or less, and even more preferably 1.2 mm or less.

[0072] The width W of the flange is preferably 4 mm or more, more preferably 6 mm or more, and even more preferably 8 mm or more. On the other hand, it is preferably 16 mm or less, more preferably 14 mm or less, and even more preferably 12 mm or less.

[0073] The combined weight of the electronic component and the electronic component mounting component is preferably 50g or less, more preferably 40g or less, and even more preferably 30g or less.

[0074] 2. Internal tire components (liner)

[0075] Next, the inner liner will be described as a specific example of a tire's internal components, but as mentioned above, tire internal components are not limited to the inner liner.

[0076] (1) Rubber composition constituting the internal components (liner) of a tire

[0077] In this embodiment, the tire internal components (liner) are formed, for example, using a rubber composition (liner rubber composition) that mixes the following compounded materials.

[0078] (a) Rubber composition

[0079] Examples of rubber components in lining rubber compositions include diene rubbers, such as isoprene rubber, butadiene rubber (BR), styrene-butadiene rubber (SBR), styrene-isoprene-butadiene rubber (SIBR), chloroprene rubber (CR), and acrylonitrile-butadiene rubber (NBR); and butyl rubbers. The rubber components can be used alone or in combination of two or more. Among the aforementioned rubbers, butyl rubber is preferred as the main rubber component due to its excellent air barrier properties and heat resistance.

[0080] (a-1) Butyl rubber

[0081] As butyl rubbers, those commonly used in the tire industry can be appropriately used. Specifically, in addition to ordinary butyl rubber (IIR), there are halogenated butyl rubbers (X-IIR) such as brominated butyl rubber (Br-IIR), chlorinated butyl rubber (Cl-IIR), fluorinated butyl rubber (F-IIR), and brominated isobutylene-p-methylstyrene copolymer (Exxpro 3035 manufactured by Exxon Mobil Chemical). Among these, Br-IIR is preferred because it promotes sulfur crosslinking even though it does not contain natural rubber.

[0082] Furthermore, recycled butyl rubber can also be used in combination with butyl rubber. Recycled butyl rubber typically has a high content of non-halogenated butyl rubber (ordinary butyl rubber), and therefore can be used in combination with halogenated butyl rubber to ensure good air barrier properties and vulcanization speed. In particular, when a mixture of fatty acid metal salts and fatty acid amides is added to a compound containing recycled butyl rubber, the performance balance between sheet processability and air barrier properties is synergistically and significantly improved. Therefore, this is preferred.

[0083] Recycled butyl rubber refers to pulverized rubber products containing a significant amount of butyl rubber (such as tire inner tubes and airbags used in tire manufacturing), or butyl rubber inclusions contained in pulverized products that have been heated and pressurized. Recycled butyl rubber includes those that can be revulcanized by breaking the crosslinking of the rubber components (desulfurization treatment). Typically, about 50% by weight of the pulverized material is recycled butyl rubber. Although recycled butyl rubber also contains sulfur, it is deactivated to a degree that does not contribute to crosslinking.

[0084] Commercially available recycled butyl rubbers include inner tube recycled rubber manufactured by Muraoka Rubber Co., Ltd., which is produced by heat-treating butyl inner tubes under pressure; airbag recycled rubber manufactured by Carquest Co., Ltd., which is produced by crushing airbags using an extruder; and so on. These recycled butyl rubbers can be used alone or in combination of two or more.

[0085] For its excellent air barrier properties, the content of butyl rubber in 100 parts by weight is preferably 70 parts by weight or more, more preferably 75 parts by weight or more, and even more preferably 80 parts by weight or more. There is no particular upper limit, and it can be 100 parts by weight, but from the viewpoint of sheet processability, it is preferably 95 parts by weight or less, more preferably 90 parts by weight or less.

[0086] From the viewpoint of the advantages of using recycled butyl rubber, the content of recycled butyl rubber in 100 parts by mass is preferably 5 parts by mass or more, more preferably 8 parts by mass or more. On the other hand, from the viewpoint of ensuring sufficient air barrier properties and vulcanization speed, it is preferably 30 parts by mass or less, more preferably 25 parts by mass or less.

[0087] Of 100 parts by weight of all butyl rubber, the content of recycled butyl rubber is preferably 7 parts by weight or more, more preferably 10 parts by weight or more. On the other hand, it is preferably 35 parts by weight or less, more preferably 30 parts by weight or less.

[0088] (a-2) Isoprene rubber

[0089] From the perspective of improving sheet processability and air barrier properties in a balanced way, it is preferable to use rubber containing isoprene when necessary.

[0090] Examples of isoprene rubbers include isoprene rubber (IR), natural rubber (NR), and modified natural rubber. NR also includes deproteinized natural rubber (DPNR) and high-purity natural rubber (UPNR). Modified natural rubber includes epoxidized natural rubber (ENR), hydrogenated natural rubber (HNR), and grafted natural rubber. For example, SIR20, RSS#3, and TSR20, commonly used in the tire industry, can be used as NR. NR and IR are preferred because they can provide a balanced improvement in sheet processability and air barrier properties.

[0091] Considering the balance between sheet processability and air barrier properties, the content of isoprene rubber in 100 parts by weight is preferably 5 parts by weight or more, more preferably 10 parts by weight or more. On the other hand, it is preferably 30 parts by weight or less, more preferably 25 parts by weight or less.

[0092] (a-3) Other rubbers

[0093] In addition to butyl rubber and isoprene rubber, rubbers commonly used in the tire industry can be used when necessary, such as diene rubbers, including butadiene rubber (BR), styrene-butadiene rubber (SBR), ethylene-propylene-diene rubber (EPDM), styrene-isoprene-butadiene rubber (SIBR), chloroprene rubber (CR), and acrylonitrile-butadiene rubber (NBR). These can be used alone or in combination of two or more.

[0094] (b) Compound materials other than rubber components

[0095] (b-1) Resin composition

[0096] From the viewpoint of imparting viscosity, adjusting the glass transition temperature (Tg), and improving sheet processability, the rubber composition for linings preferably contains a resin component. Specific resin components include, for example, aromatic hydrocarbon resins, such as terpene resins and coumarone-indene resins; aliphatic hydrocarbon resins, such as non-reactive alkylphenol resins, C5 resins, and C9 resins; and so on. Two or more of these can be used in combination. Among these, a combination of aromatic hydrocarbon resins and aliphatic hydrocarbon resins is preferred. The content of the resin component relative to 100 parts by weight is preferably, for example, 2 parts by weight or more, more preferably 3 parts by weight or more. On the other hand, it is preferably 7 parts by weight or less, more preferably 5 parts by weight or less.

[0097] Examples of terpene resins include polyterpenes, terpene phenols, and aromatic modified terpene resins. Polyterpenes are resins obtained by polymerizing terpene compounds and their hydrogenation products. Terpene compounds are those with the structure (C5H8). n The hydrocarbons or their oxygen-containing derivatives that are composed of monoterpenes (C 10 H 16 ), sesquiterpenes (C 15 H 24 ), diterpenes (C 20 H 32 Compounds with terpenes as their basic skeleton, such as α-pinene, β-pinene, dipentene, limonene, myrcene, allociperene, osimene, α-phellandrene, α-terpinene, γ-terpinene, terpinene, 1,8-cineole, 1,4-cineole, α-terpineol, β-terpineol, and γ-terpineol.

[0098] Examples of polyterpenes include terpene resins made from the aforementioned terpene compounds, such as α-pinene resins, β-pinene resins, limonene resins, dipentene resins, and β-pinene / limonene resins, as well as hydrogenated terpene resins obtained by hydrogenating terpene resins. Examples of terpene phenols include resins obtained by copolymerizing the aforementioned terpene compounds and phenolic compounds, as well as resins obtained by hydrogenating the aforementioned resins. Specifically, resins obtained by condensing the aforementioned terpene compounds, phenolic compounds, and formalin may be mentioned. Examples of phenolic compounds include phenol, bisphenol A, cresol, and xylenol. Examples of aromatically modified terpene resins include resins obtained by modifying terpene resins with aromatic compounds, as well as resins obtained by hydrogenating the aforementioned resins. There are no particular restrictions on aromatic compounds, as long as they are compounds with aromatic rings. Examples include phenolic compounds, such as phenols, alkylphenols, alkoxyphenols, and phenols containing unsaturated hydrocarbon groups; naphthol compounds, such as naphthols, alkylnaphthols, alkoxynaphthols, and naphthols containing unsaturated hydrocarbon groups; styrene derivatives, such as styrene, alkylstyrene, alkoxystyrene, and styrene containing unsaturated hydrocarbon groups; coumarones; and indene.

[0099] Coumarin-indene resin is a resin containing coumarone and indene as monomeric components constituting the resin backbone (main chain). Examples of monomeric components in the backbone other than coumarone and indene include styrene, α-methylstyrene, methylindene, and vinyltoluene.

[0100] The hydroxyl value (OH value) of coumarone-indene resin is, for example, greater than 15 mg KOH / g and less than 150 mg KOH / g. The OH value, expressed in milligrams, is the amount of potassium hydroxide required to neutralize acetic acid bound to the hydroxyl group when 1 g of resin is acetylated. It is measured by potentiometric titration (JIS K 0070:1992).

[0101] The softening point of coumarone-indene resin is, for example, above 30°C and below 160°C. The softening point is the temperature at which the ball falls when measured using a ring-spherical softening point measuring device as defined in JIS K 6220-1:2001.

[0102] Non-reactive alkylphenol resins are those with alkyl chains at the ortho and para (especially para) positions of the hydroxyl groups on the benzene ring in the chain, and which contribute slightly to the crosslinking reaction during vulcanization. They can be used in combination of two or more types.

[0103] "C5 resin" refers to a resin obtained by polymerizing a C5 fraction. Examples of C5 fractions include petroleum fractions having 4 to 5 carbon atoms, such as cyclopentadiene, pentene, pentadiene, and isoprene. Dicyclopentadiene resin (DCPD resin) is preferred as a C5 type petroleum resin.

[0104] "C9 resin" refers to a resin obtained by polymerizing a C9 fraction, which can be hydrogenated or modified. Examples of C9 fractions include petroleum fractions having 8 to 10 carbon atoms, such as vinyltoluene, alkylstyrene, indene, and methylindene. Specific examples include, for instance, coumarone-indene resin, coumarone resin, indene resin, and aromatic vinyl resins. As aromatic vinyl resins, homopolymers of α-methylstyrene or styrene, or copolymers of α-methylstyrene and styrene, are preferred because they are economical, easy to process, and have excellent heat dissipation properties. Copolymers of α-methylstyrene and styrene are more preferred.

[0105] C5C9 resins obtained by copolymerizing C5 and C9 fractions can also be used, as well as hydrogenated or modified resins thereof. The C5 and C9 fractions include the aforementioned petroleum fractions.

[0106] (b-2) Softener

[0107] From the viewpoint of sheet processing, the rubber composition for lining preferably contains oil (including filler oil) or liquid rubber as a softener. The total content of these components relative to 100 parts by weight of the rubber component is preferably 2 parts by weight or more, more preferably 3 parts by weight or more, and even more preferably 4 parts by weight or more. Furthermore, it is preferably 9 parts by weight or less, more preferably 7 parts by weight or less, and even more preferably 6 parts by weight or less. The oil content also includes the amount of oil contained in the rubber (oil-extended rubber).

[0108] There are no particular restrictions on the type of oil, as long as it is commonly used in the tire industry, and it includes mineral oils (generally referred to as processed oils), vegetable oils, and mixtures thereof. Examples of mineral oils (processed oils) include paraffinic processed oils, aromatic processed oils, or naphthenic processed oils. Examples of vegetable oils and fats include castor oil, cottonseed oil, linseed oil, rapeseed oil, soybean oil, palm oil, coconut oil, peanut oil, rosin, pine oil, pine tar, tall oil, corn oil, rice bran oil, beni flower oil, sesame oil, olive oil, sunflower oil, palm kernel oil, camellia oil, jojoba oil, macadamia oil, and tung oil. These can be used alone or in combination of two or more.

[0109] When using processing oils, it is preferable to use processing oils with low aromatic content. By using materials with low aromatic content, compatibility with butyl rubber is improved, exudation to the surface of the rubber sheet is inhibited, and the reduction in molding tack can be suppressed.

[0110] Specific examples of processed oils (mineral oils) include products from Idemitsu Kosan Co., Ltd., Sankyo Yuka Kogyo Co., Ltd., Japan Energy Co., Ltd., Olisoy Co., Ltd., H&R Co., Ltd., Toyokuni Seiyu Co., Ltd., Showa Shell Sekiyu Co., Ltd., and Fuji Kosan Co., Ltd.

[0111] Liquid rubber, as mentioned in the context of plasticizers, is a polymer that is in a liquid state at room temperature (25°C) and has monomers similar to those in solid rubber as constituent elements. Examples of liquid rubber include farnesene polymers, liquid diene polymers, and their hydrogenated additives.

[0112] Farnesene polymers are polymers obtained by polymerizing farnesenes and have farnesene-based structural units. Farnesenes include isomers such as α-farnesene ((3E,7E)-3,7,11-trimethyl-1,3,6,10-dodecathetene) and β-farnesene (7,11-dimethyl-3-methylene-1,6,10-dodecathetene).

[0113] Farnesene polymers can be homopolymers of farnesene (farnesene homopolymers) or copolymers of farnesene and vinyl monomers (farnesene-vinyl monomer copolymers).

[0114] Examples of liquid diene polymers include liquid styrene-butadiene copolymer (liquid SBR), liquid butadiene polymer (liquid BR), liquid isoprene polymer (liquid IR), and liquid styrene-isoprene copolymer (liquid SIR).

[0115] The polystyrene equivalent weight-average molecular weight (Mw) of the liquid diene polymer, as determined by gel permeation chromatography (GPC), is, for example, greater than 1.0 × 10⁻⁶. 3 And less than 2.0 × 10 5 In this specification, the Mw of the liquid diene polymer is the polystyrene conversion value determined by gel permeation chromatography (GPC).

[0116] The content of liquid rubber (total content of liquid farnesene polymers, liquid diene polymers, etc.) is, for example, greater than 1 part by mass and less than 100 parts by mass relative to 100 parts by mass of rubber component.

[0117] As a liquid rubber, products from Kurararay Co., Ltd. and Clay Valley Co., Ltd. can be used.

[0118] (b-3) Packing

[0119] The rubber composition for the lining preferably contains fillers. Specific examples of fillers include carbon black, graphite, silica, calcium carbonate, talc, alumina, clay, aluminum hydroxide, and mica. Among these, carbon black is preferred as a reinforcing agent, and silica can be used in combination.

[0120] (b-3-1) Carbon Black

[0121] The carbon black content, relative to 100 parts by weight of rubber, is preferably 10 parts by weight or more, more preferably 20 parts by weight or more, and even more preferably 30 parts by weight or more. On the other hand, it is preferably 100 parts by weight or less, more preferably 90 parts by weight or less, and even more preferably 80 parts by weight or less.

[0122] There are no particular limitations on carbon black, and examples include furnace black, such as SAF, ISAF, HAF, MAF, FEF, SRF, GPF, APF, FF, CF, SCF, and ECF (furnace black); acetylene black; thermal cracking black, such as FT and MT (thermal cracking black); and channel black, such as EPC, MPC, and CC (channel black). These can be used individually or in combination of two or more.

[0123] From the perspective of sheet processability, the nitrogen adsorption specific surface area (N2SA) of carbon black is preferably 10 m² / s. 2 / g or more and 70m 2 / g or less, preferably 20m 2 / g or more and 40m 2 / g or less. The dibutyl phthalate (DBP) absorption of carbon black is, for example, greater than 50 ml / 100g and less than 250 ml / 100g. The nitrogen adsorption specific surface area of ​​carbon black is measured according to ASTM D4820-93, and the DBP absorption is measured according to ASTM D2414-93.

[0124] There are no specific restrictions on the type of carbon black used, including N550, N660, and N762. Examples of commercially available products include those from Asahi Carbon Co., Ltd., Cabot Japan Co., Ltd., Tokai Carbon Co., Ltd., Mitsubishi Chemical Corporation, Lion Corporation, Shin Nikka Carbon Co., Ltd., and Columbia Carbon Co., Ltd. These can be used alone or in combination of two or more.

[0125] (b-3-2)Silica

[0126] When necessary, the rubber composition for the lining may contain silica, and it is typically used in conjunction with a silane coupling agent. However, if silica is used, the silica not covered by the silane coupling agent may re-aggregate during sheet extrusion, leading to deterioration of the sheet's processability. Therefore, it is preferable not to use it if possible.

[0127] When using silica, the BET specific surface area of ​​silica is preferably greater than 140 m². 2 / g, more preferably greater than 160m 2 / g. On the other hand, it is preferably less than 250m. 2 / g, more preferably less than 220m 2 / g. The silica content relative to 100 parts by weight of the rubber component is preferably 5 parts by weight or more, more preferably 15 parts by weight or more, and even more preferably 25 parts by weight or more. On the other hand, it is preferably 50 parts by weight or less, more preferably 40 parts by weight or less, and even more preferably 30 parts by weight or less. The above-mentioned BET specific surface area is the N2 SA value measured by the BET method according to ASTM D3037-93.

[0128] Examples of silica include dry silica (anhydrous silica) and wet silica (hydrated silica). Wet silica is preferred because it has a large number of silanol groups.

[0129] Products from companies such as Degussa, Rhodia, Tosoh Silica Co., Ltd., Solvay Japan Co., Ltd., and Tokuyama Co., Ltd. can be used as silica.

[0130] There are no particular limitations on silane coupling agents. Examples of silane coupling agents include:

[0131] Sulfide-based silane coupling agents, such as bis(3-triethoxysilylpropyl)tetrasulfide, bis(2-triethoxysilylethyl)tetrasulfide, bis(4-triethoxysilylbutyl)tetrasulfide, bis(3-trimethoxysilylpropyl)tetrasulfide, bis(2-trimethoxysilylethyl)tetrasulfide, bis(2-triethoxysilylethyl)trisulfide, bis(4-trimethoxysilylbutyl)trisulfide, bis(3-triethoxysilylpropyl)disulfide, bis(2-trieth ... 3-Trimethoxysilylpropyl disulfide, bis(4-triethoxysilylbutyl) disulfide, bis(3-trimethoxysilylpropyl) disulfide, bis(2-trimethoxysilylethyl) disulfide, bis(4-trimethoxysilylbutyl) disulfide, 3-trimethoxysilylpropyl-N,N-dimethylthiocarbamoyl tetrasulfide, 2-triethoxysilylethyl-N,N-dimethylthiocarbamoyl tetrasulfide, and 3-triethoxysilylpropyl methacrylate monosulfide;

[0132] Thiol-based silane coupling agents, such as 3-mercaptopropyltrimethoxysilane, 2-mercaptoethyltriethoxysilane, and NXT and NXT-Z manufactured by Momentive;

[0133] Vinyl silane coupling agents, such as vinyltriethoxysilane and vinyltrimethoxysilane;

[0134] Aminosilane coupling agents, such as 3-aminopropyltriethoxysilane and 3-aminopropyltrimethoxysilane;

[0135] Glycidyl ether oxysilane coupling agents, such as γ-glycidyl ether oxypropyltriethoxysilane and γ-glycidyl ether oxypropyltrimethoxysilane;

[0136] Nitrosilane coupling agents, such as 3-nitropropyltrimethoxysilane and 3-nitropropyltriethoxysilane; and

[0137] Chlorinated silane coupling agents, such as 3-chloropropyltrimethoxysilane and 3-chloropropyltriethoxysilane. These can be used alone or in combination of two or more.

[0138] Examples of usable silane coupling agents include products from Degussa, Momentive, Shinetsu Silicone Co., Ltd., Tokyo Chemical Industry Co., Ltd., Azumax Co., Ltd., and Toray Dow Corning Co., Ltd.

[0139] The content of silane coupling agent relative to 100 parts by weight of silicon dioxide is, for example, greater than 3 parts by weight and less than 25 parts by weight.

[0140] (b-3-3) Other fillers

[0141] In addition to carbon black and silica, the rubber composition for the inner lining may further include fillers commonly used in the tire industry, such as calcium carbonate, talc, alumina, clay, aluminum hydroxide, and mica. Flat aluminum hydroxide is preferred due to its excellent air barrier properties and sheet processability. Its content is greater than 0.1 parts by weight and less than 200 parts by weight relative to 100 parts by weight of the rubber component.

[0142] (b-4) Processing aids

[0143] The rubber composition for the lining preferably contains a mixture of fatty acid metal salts and fatty acid amides as processing aids. This allows for a proper balance between sheet processability and air barrier properties.

[0144] There are no particular limitations on the fatty acids constituting the fatty acid metal salts, but saturated or unsaturated fatty acids having a preferred number of 6 to 28 carbon atoms, more preferably 10 to 25 carbon atoms, and even more preferably 14 to 20 carbon atoms may be mentioned. Specific examples include lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, arachidic acid, behenic acid, and nervonic acid. These can be used alone or in combination of two or more. Saturated fatty acids are preferred, and saturated fatty acids having 14 to 20 carbon atoms are more preferred.

[0145] Examples of metals that constitute fatty acid metal salts include alkali metals, such as potassium and sodium; and alkaline earth metals, such as magnesium, calcium and barium, zinc, nickel and molybdenum. Among these, zinc and calcium are preferred.

[0146] Fatty acid amides can be saturated or unsaturated. Examples of saturated fatty acid amides include N-(1-oxooctadecyl)sarcosine, stearamide, and behenamide. On the other hand, examples of unsaturated fatty acid amides include oleamide and erucamide.

[0147] The content of processing aids relative to 100 parts by weight of rubber is preferably 0.8 parts by weight or more, more preferably 1.0 parts by weight or more, and even more preferably 1.2 parts by weight or more. On the other hand, it is preferably 3.2 parts by weight or less, more preferably 3.0 parts by weight or less, and even more preferably 2.8 parts by weight or less.

[0148] (b-5) Anti-aging agents

[0149] The rubber composition for the lining preferably contains an antioxidant. The content of the anti-aging agent relative to 100 parts by weight of the rubber component is preferably 0.2 parts by weight or more, more preferably 0.7 parts by weight or more. On the other hand, it is preferably 5.0 parts by weight or less, more preferably 3.0 parts by weight or less, and even more preferably 2.0 parts by weight or less.

[0150] Examples of anti-aging agents include:

[0151] Naphthylamine anti-aging agents, such as phenyl-α-naphthylamine;

[0152] Diphenylamine anti-aging agents, such as octyl diphenylamine and 4,4′-bis(α,α′-dimethylbenzyl)diphenylamine;

[0153] p-Phenylenediamine anti-aging agents, such as N-isopropyl-N'-phenyl-p-phenylenediamine, N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine and N,N'-di-2-naphthyl-p-phenylenediamine;

[0154] Quinoline anti-aging agents, such as polymers of 2,2,4-trimethyl-1,2-dihydroquinoline, 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline, 6-aniline-2,2,4-trimethyl-1,2-dihydroquinoline, and poly-2,2,4-trimethyl-1,2-dihydroquinoline;

[0155] Monophenolic anti-aging agents, such as 2,6-di-tert-butyl-4-methylphenol and styrenated phenol; and

[0156] Bis, tris, and polyphenolic anti-aging agents, such as tetrakis[3-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionate methylene ester]methane. These can be used alone or in combination of two or more.

[0157] As an anti-aging agent, products from companies such as Seiko Chemical Co., Ltd., Sumitomo Chemical Co., Ltd., Ouchi Shinko Chemical Industry Co., Ltd., and Flexsys Co., Ltd. can be used.

[0158] (b-6) Stearic acid

[0159] The rubber composition for the lining may contain stearic acid. The stearic acid content, for example, is greater than 0.5 parts by weight and less than 10.0 parts by weight per 100 parts by weight of the rubber component. Conventionally known stearic acids can be used as the stearic acid. For example, products from NOF Corporation, Kao Corporation, Fuji Film Wako PureChemical Industries, Ltd., and Chiba Fatty Acid Co., Ltd., etc., can be used.

[0160] (b-7) Zinc oxide

[0161] The rubber composition for the lining may contain zinc oxide. The zinc oxide content, for example, is greater than 0.5 parts by weight and less than 10 parts by weight per 100 parts by weight of the rubber component. Conventionally known zinc oxides can be used as the zinc oxide, for example, products from Mitsui Mining & Smelting Co., Ltd., Toho Zinc Co., Ltd., Hakusui Tech Co., Ltd., Shodo Chemical Industry Co., Ltd., Sakai Chemical Industry Co., Ltd., etc.

[0162] (b-8) Crosslinking agents and vulcanization accelerators

[0163] The rubber composition for the lining preferably contains a crosslinking agent, such as sulfur. The content of the crosslinking agent is, for example, greater than 0.1 parts by weight and less than 10.0 parts by weight per 100 parts by weight of the rubber component.

[0164] As sulfur, those commonly used in the rubber industry can be used, such as powdered sulfur, precipitated sulfur, colloidal sulfur, insoluble sulfur, highly dispersed sulfur, and soluble sulfur. These can be used alone or in combination of two or more.

[0165] For example, products from companies such as Tsurumi Chemical Industry Co., Ltd., Karuizawa Sulfur Co., Ltd., Shikoku Chemicals Corporation, Flexsys Co., Ltd., Nippon KanryuKogyo Co., Ltd., and Hosoi Chemical Industry Co., Ltd. can be used as sulfur.

[0166] Examples of crosslinking agents other than sulfur include sulfur-containing vulcanizing agents, such as Tackirol V200 manufactured by Taoka Chemical Industry Co., Ltd., DURALINK HTS (1,6-hexamethylene-sodium dithiosulfate dihydrate) manufactured by Flexsys, and KA9188 (1,6-bis(N,N'-dibenzylthiocarbamoyl dithiohexane)) manufactured by Lanxess; and organic peroxides, such as dicumyl peroxide.

[0167] The rubber composition for the lining preferably contains a vulcanization accelerator. The content of the vulcanization accelerator is, for example, greater than 0.3 parts by weight and less than 10.0 parts by weight per 100 parts by weight of the rubber component.

[0168] Examples of vulcanization accelerators include:

[0169] Thiazole-based vulcanization accelerators, such as 2-mercaptobenzothiazole, di-2-benzothiazole disulfide, and N-cyclohexyl-2-benzothiamide;

[0170] Thiuram-based vulcanization accelerators, such as tetramethylthiuram disulfide (TMTD), tetrabenzylthiuram disulfide (TBzTD), and tetra(2-ethylhexyl)thiuram disulfide (TOT-N);

[0171] Sulphamide-based vulcanization accelerators, such as N-cyclohexyl-2-benzothiazole sulfinamide, N-tert-butyl-2-benzothiazole sulfinamide, N-oxyethylidene-2-benzothiazole sulfinamide, N-oxyethylidene-2-benzothiazole sulfinamide, and N,N'-diisopropyl-2-benzothiazole sulfinamide; and

[0172] Guanidine vulcanization accelerators, such as diphenylguanidine, di-o-tolylguanidine, and o-tolylbiguanidine. These can be used alone or in combination of two or more.

[0173] (2) Preparation of tire internal components (liner)

[0174] The rubber composition for lining is produced by conventional methods, such as a manufacturing method that includes a basic mixing step of mixing rubber components and fillers (e.g., carbon black) and a fine mixing step of mixing the compound obtained in the basic mixing step with a crosslinking agent.

[0175] Mixing can be carried out using known (closed) mixing machines such as Banbury mixers, mixing mills, or open rolls.

[0176] The mixing temperature in the basic mixing step is, for example, above 50°C and below 200°C, and the mixing time is, for example, greater than 30 seconds and less than 30 minutes. During the basic mixing process, in addition to the above-mentioned components, if necessary, commonly used compounding agents in the rubber industry may be appropriately added and mixed, such as softeners (e.g., oils, stearic acid, zinc oxide), anti-aging agents, waxes, and vulcanization accelerators.

[0177] In the fine mixing step, the compounded product obtained in the basic mixing step and the crosslinking agent are mixed. The mixing temperature in the fine mixing step is, for example, above room temperature and below 80°C, and the mixing time is, for example, greater than 1 minute and less than 15 minutes. In the fine mixing step, in addition to the above-mentioned components, if necessary, vulcanization accelerators and zinc oxide, etc., may be appropriately added and mixed.

[0178] At this point, for example, the E of the lining at 0°C can be adjusted by adjusting the mixing amount of the filler and the mixing amount of the oil and resin components. * And tanδ, so as to satisfy the above conditions. Furthermore, for example, the glass transition temperature (Tg) of the liner can be adjusted by regulating the type and amount of resin components. i For example, E can be increased by increasing the amount of filler. * And tanδ, and Tg can be increased by blending resins with higher Tg than rubber components.

[0179] The liner is produced by molding the obtained liner into a predetermined shape using a rubber composition.

[0180] 3. Electronic component mounting components

[0181] Next, as a specific example of an electronic component mounting component, a rubber electronic component mounting component will be described, but as mentioned above, electronic component mounting components are not limited to components made of rubber.

[0182] (1) A rubber composition constituting an electronic component mounting component

[0183] The rubber composition constituting the electronic component mounting parts (rubber composition for electronic component mounting parts) can be formed using the same compounding materials as in the case of the liner rubber composition. However, rubber components different from those used in the liner rubber composition can be used. For example, BR with low Tg and excellent low-temperature performance and NBR with excellent mechanical properties can be used as the main rubber components. Additionally, other diene rubbers, such as isoprene rubbers, SBR, SIBR, and CR, can be suitably used.

[0184] When BR and NBR are used as rubber components, the content of BR in 100 parts by weight is, for example, 40 to 60 parts by weight, and the content of NBR is, for example, 40 to 60 parts by weight.

[0185] Here, the weight-average molecular weight of BR is, for example, greater than 100,000 and less than 2,000,000. The vinyl bond content of BR is, for example, greater than 1% by mass and less than 30% by mass. The cis content of BR is, for example, greater than 1% by mass and less than 98% by mass. The trans content of BR is, for example, greater than 1% by mass and less than 60% by mass. The cis content can be measured by infrared absorption spectroscopy.

[0186] There are no particular restrictions on BR; BR with high cis content (over 90%), BR with low cis content, and BR containing syndiotactic polybutadiene crystals can be used. BR can be unmodified or modified. As a modified BR, for example, BR modified with a compound (modifier) ​​represented by the following formula can be used.

[0187] [Chemical Formula 1]

[0188]

[0189] In the formula, R 1 R 2 and R 3 They are the same or different, and represent alkyl, alkoxy, silyloxy, acetal, carboxyl (-COOH), mercapto (-SH) or their derivatives. R 4 and R 5 They are the same or different, and represent hydrogen atoms or alkyl groups. R 4 and R 5 They can be combined to form ring structures containing nitrogen atoms. n represents an integer.

[0190] Examples of modified BRs modified by the compound (modifier) ​​represented by the above formula include BRs whose polymer ends (active ends) have been modified by the compound represented by the above formula.

[0191] As R 1 R 2 and R 3 Alkoxy groups are suitable (preferably alkoxy groups having 1 to 8 carbon atoms, more preferably alkoxy groups having 1 to 4 carbon atoms). As R 4 and R 5 Alkyl groups (preferably alkyl groups having 1 to 3 carbon atoms) are suitable. n is preferably 1 to 5, more preferably 2 to 4, and even more preferably 3. Furthermore, when R... 4 and R 5 When combined with nitrogen atoms to form a ring structure, a 4- to 8-membered ring is preferred. Alkoxy groups also include cycloalkoxy groups (such as cyclohexyloxy) and aryloxy groups (such as phenoxy and benzyloxy).

[0192] Specific examples of the aforementioned modifiers include 2-dimethylaminoethyltrimethoxysilane, 3-dimethylaminopropyltrimethoxysilane, 2-dimethylaminoethyltriethoxysilane, 3-dimethylaminopropyltriethoxysilane, 2-diethylaminoethyltrimethoxysilane, 3-diethylaminopropyltrimethoxysilane, 2-diethylaminoethyltriethoxysilane, and 3-diethylaminopropyltriethoxysilane. These can be used alone or in combination of two or more.

[0193] In addition, modified BR can also be used as a modified BR, modified with the following compounds (modifiers). Examples of modifiers include:

[0194] Polyhydric alcohol polyglycidyl ethers, such as ethylene glycol diglycidyl ether, glycerol triglycidyl ether, trimethylolethane triglycidyl ether and trimethylolpropane triglycidyl ether;

[0195] Polyglycidyl ethers of aromatic compounds having two or more phenolic groups, such as diglycidylated bisphenol A;

[0196] Polyepoxides, such as 1,4-diglycidylbenzene, 1,3,5-triglycidylbenzene and polyepoxide liquid polybutadiene;

[0197] Tertiary amines containing epoxy groups, such as 4,4'-diglycidyl-diphenylmethylamine and 4,4'-diglycidyl-dibenzylmethylamine;

[0198] Diglycidylamino compounds, such as diglycidylaniline, N,N'-diglycidyl-4-glycidyloxyaniline, diglycidyl-o-toluidine, tetraglycidyl-m-xylyldiamine, tetraglycidylaminodiphenylmethane, tetraglycidyl-p-phenylenediamine, diglycidylaminomethylcyclohexane, and tetraglycidyl-1,3-diaminomethylcyclohexane;

[0199] Amino-containing acyl chlorides, such as bis-(1-methylpropyl)carbamoyl chloride, 4-morpholine carbamoyl chloride, 1-pyrrolidine carbamoyl chloride, N,N-dimethylcarbamoyl chloride and N,N-diethylcarbamoyl chloride;

[0200] Silane compounds containing epoxy groups, such as 1,3-bis-(glycidoxypropyl)-tetramethyldisiloxane and (3-glycidoxypropyl)-pentamethyldisiloxane;

[0201] Silane compounds containing thioether groups, such as (trimethylsilyl)[3-(trimethoxysilyl)propyl] sulfide, (trimethylsilyl)[3-(triethoxysilyl)propyl] sulfide, (trimethylsilyl)[3-(tripropoxysilyl)propyl] sulfide, (trimethylsilyl)[3-(tributoxysilyl)propyl] sulfide, (trimethylsilyl)[3-(methyldimethoxysilyl)propyl] sulfide, (trimethylsilyl)[3-(methyldiethoxysilyl)propyl] sulfide, (trimethylsilyl)[3-(methyldipropoxysilyl)propyl] sulfide and (trimethylsilyl)[3-(methyldibutoxysilyl)propyl] sulfide;

[0202] N-substituted aziridine compounds, such as ethyleneimine and propyleneimine;

[0203] Alkoxysilanes, such as methyltriethoxysilane, N,N-bis(trimethylsilyl)-3-aminopropyltrimethoxysilane, N,N-bis(trimethylsilyl)-3-aminopropyltriethoxysilane, N,N-bis(trimethylsilyl)aminoethyltrimethoxysilane and N,N-bis(trimethylsilyl)aminoethyltriethoxysilane;

[0204] (Thio)benzophenone compounds having an amino group and / or a substituted amino group, such as 4-N,N-dimethylaminobenzophenone, 4-N,N-di-tert-butylaminobenzophenone, 4-N,N-diphenylaminobenzophenone, 4,4'-bis(dimethylamino)benzophenone, 4,4'-bis(diethylamino)benzophenone, 4,4'-bis(diphenylamino)benzophenone and N,N,N',N'-bis-(tetraethylamino)benzophenone;

[0205] Benzaldehyde compounds having an amino group and / or a substituted amino group, such as 4-N,N-dimethylaminobenzaldehyde, 4-N,N-diphenylaminobenzaldehyde and 4-N,N-divinylaminobenzaldehyde;

[0206] N-substituted pyrrolidones, such as N-methyl-2-pyrrolidone, N-vinyl-2-pyrrolidone, N-phenyl-2-pyrrolidone, N-tert-butyl-2-pyrrolidone and N-methyl-5-methyl-2-pyrrolidone;

[0207] N-substituted piperidinones, such as methyl-2-piperidinone, N-vinyl-2-piperidinone and N-phenyl-2-piperidinone;

[0208] N-substituted lactams, such as N-methyl-ε-caprolactam, N-phenyl-ε-caprolactam, N-methyl-ω-laurolactam, N-vinyl-ω-laurolactam, N-methyl-β-propiolactam, and N-phenyl-β-propiolactam; and

[0209] N,N-bis-(2,3-epoxypropoxy)-aniline, 4,4-methylene-bis-(N,N-glycidylaniline), tris-(2,3-epoxypropyl)-1,3,5-triazine-2,4,6-trione, N,N-diethylacetamide, N-methylmaleimide, N,N-diethylurea, 1,3-dimethylethylurea, 1,3-divinylethylurea, 1,3-diethyl-2-imidazolium ketone, 1-methyl-3-ethyl-2-imidazolium ketone, 4-N,N-dimethylaminoacetophenone, 4-N,N-diethylaminoacetophenone, 1,3-bis(diphenylamino)-2-propanone, and 1,7-bis(methylethylamino)-4-heptanone. Modification by the above compounds (modifiers) can be carried out by known methods. These modified BRs can be used alone or in combination of two or more.

[0210] As a business partner (BR), products from companies such as Ube Industries, Ltd., JSR Corporation, Asahi Kasei Co., Ltd., and Nippon Zeon Co., Ltd. can be used.

[0211] Furthermore, there are no particular restrictions on NBRs, and NBRs with appropriate amounts of bound acrylonitrile can be used depending on the required performance.

[0212] (2) Preparation of rubber composition for mounting parts of electronic components

[0213] The rubber composition for electronic component mounting parts can be manufactured in the same manner as the tire inner parts (liners) described above. In this case, as in the production of tire inner parts (liners), the E2O3 composition at 0°C can be adjusted by regulating the mixing amount of filler such as carbon black and the mixing amounts of oil and resin components. * To satisfy the above conditions, and the glass transition temperature (Tg) r The amount of resin can be adjusted by changing the type and amount of resin components.

[0214] (3) Production of electronic component mounting parts

[0215] Next, the obtained electronic component mounting parts are heated and pressed into a predetermined shape in a vulcanizing machine using a rubber composition to produce electronic component mounting parts. The vulcanization step can be carried out using known vulcanization methods. The vulcanization temperature is, for example, above 120°C and below 200°C, and the vulcanization time is, for example, greater than 5 minutes and less than 15 minutes. Although the housing and connecting parts of the electronic component mounting parts can be made of different materials, they are preferably integrally formed from the same material.

[0216] 4. Tire manufacturing

[0217] (1) Manufacturing tires before installing electronic component mounting parts.

[0218] In this disclosure, the tire before the installation of electronic components can be manufactured using conventional methods. That is, firstly, an uncured tire is produced by molding the inner liner (tire internal component) manufactured as described above together with other tire components on a tire forming machine using conventional methods.

[0219] Specifically, the inner liner, manufactured to ensure tire airtightness, the carcass, which bears the load, impact, and inflation pressure received by the tire, and the bead portion, which secures the two ends of the carcass to the side edges and the tire to the rim, are placed on the forming drum, and the carcass portion is folded back to wrap around the bead portion. Next, the bead reinforcement layer, the clamping portion, and the sidewall, as components that protect the bead portion and the carcass and withstand bending, are adhered to the outer side of the bead portion in the tire width direction, and these are formed into a ring. Then, a belt or similar component, which strongly tightens the carcass and increases tread rigidity, is wound around the central portion of the outer periphery, and the tread is further arranged on the outer periphery to produce an uncured tire.

[0220] The uncured tires produced are then heated and pressurized in a vulcanizing machine to obtain tires without the electronic component mounting parts. The vulcanization step can be carried out using known vulcanization methods. The vulcanization temperature is, for example, above 120°C and below 200°C, and the vulcanization time is, for example, greater than 5 minutes and less than 15 minutes.

[0221] (2) Installation of electronic component mounting components

[0222] Next, using a predetermined adhesive, the separately manufactured electronic component mounting component is attached to the central portion of the internal components of the manufactured tire in the tire width direction, thereby completing the manufacturing of the tire according to this embodiment. The electronic components are housed in the electronic component mounting component after production. Furthermore, instead of attaching the electronic component mounting component to the vulcanized tire with adhesive, both the unvulcanized tire and the electronic component mounting component can be vulcanized simultaneously. However, since it is difficult to replace the electronic component mounting component, it is preferable to attach the electronic component mounting component to the vulcanized tire with adhesive.

[0223] The surfaces of tire internal components (tire bore) are typically coated with a release agent to maintain release properties during vulcanization. Preferably, electronic components are mounted using adhesives after the release agent is removed. Two methods are conceivable for removing the release agent.

[0224] The first method is to use a polishing machine (such as a sander) to scrape off the release agent (sanding). By using a polishing machine, larger unevenness is eliminated, and the surface is roughened to ensure sufficient contact area for bonding.

[0225] The second method involves using a laser to scrape off the release agent (laser polishing). This allows for polishing with higher precision than a polishing machine and makes the contact surfaces with the electronic component mounting parts smooth. Therefore, it is considered to have excellent peel resistance.

[0226] Note that laser polishing can be distinguished from other polishing methods by confirming that the step difference in the tire bore at the interface between the polished and unpolished areas is less than 200 μm. The unpolished area includes the release agent layer from vulcanization.

[0227] As another method, when the release agent is applied to the inner surface of the uncured tire, the release agent is not only applied to the location where the electronic component mounting parts are to be installed, but also, after curing, the electronic component mounting parts can be installed in that location.

[0228] The adhesive can be appropriately selected and used from commercially available rubber adhesives commonly used for bonding rubber parts, such as acrylic rubber, neoprene rubber, styrene-butadiene rubber, and butyl rubber. However, it is preferred to use rubber-based adhesives that retain their flexibility even after curing.

[0229] 5. Applications

[0230] The tires disclosed herein can be pneumatic or non-pneumatic tires. Furthermore, they can be applied to various applications, such as tires for passenger cars, tires for large vehicles, tires for two-wheeled vehicles, tires for agriculture, tires for mining, and tires for aircraft. They are most preferably applied to pneumatic passenger car tires. As used herein, the term "passenger car tire" refers to a tire mounted on a four-wheeled vehicle with a maximum load capacity of 1000 kg or less.

[0231] There is no particular limitation on the maximum load capacity, as long as it is below 1000 kg. However, generally, as the maximum load capacity increases, the tire weight tends to increase, and the impact transmitted to the tire tends to increase. Therefore, it is preferably below 900 kg, more preferably below 800 kg, and even more preferably below 700 kg.

[0232] From the viewpoint of the impact transmitted to the tire through softening, the tire weight is preferably 20 kg or less, more preferably 15 kg or less, and even more preferably 12 kg or less, 10 kg or less, or 8 kg or less. As used herein, the term "tire weight" includes the weight of electronic components and their mounting components. When sealants, sponges, etc., are disposed in the tire bore, the tire weight also includes their weight.

[0233] Example

[0234] The present disclosure will be described in more detail below based on embodiments.

[0235] In the following embodiments, a material having Figure 1 The tire with the structure shown (size: 195 / 65R15) was tested, and the peel resistance of the electronic component mounting components and the tire internal components (liner) was evaluated.

[0236] 1. Lining manufacturing

[0237] (1) Manufacturing of rubber composition for lining

[0238] First, a rubber composition for the lining was prepared.

[0239] (a) Mixed materials

[0240] First, the following mixed materials were prepared.

[0241] (a-1) Rubber composition

[0242] Butyl rubber: Chlorobutyl HT1066 (chlorinated butyl rubber) manufactured by Exxon Chemical Co., Ltd.

[0243] (a-2) Compound materials other than rubber components

[0244] (a-2-1) Carbon black: Show Black N660 (N2SA: 35m) manufactured by Cabot Japan Co., Ltd. 2 / g)

[0245] (a-2-2) Oil: Process X-260 manufactured by Japan Energy Co., Ltd.

[0246] (a-2-3) Resin Component-1: Marukaretsu T-100AS (C5 petroleum resin) manufactured by Maruzen Petrochemical Co., Ltd.

[0247] (a-2-4) Resin Component-2: Petrotac 100V (C5 petroleum resin) manufactured by Tosoh Corporation.

[0248] (a-2-5) Processing aid: WB16 (a mixture of fatty acid metal salts (calcium saturated fatty acids with 14 to 20 carbon atoms) and fatty acid amides) manufactured by Structol Co., Ltd.

[0249] (a-2-6) Stearic acid: TSUBAKI manufactured by NOF Corporation

[0250] (a-2-7) Zinc oxide: Two types of zinc oxide manufactured by Mitsui Mining & Smelting Co., Ltd.

[0251] (a-2-8) Sulfur: HK-200-5 (containing 5% by mass of oil) manufactured by Hosoi Chemical Co., Ltd.

[0252] (a-2-9) Vulcanization accelerator: Nocceler DM (di-2-benzothiazolyl disulfide) manufactured by Ouchi Shinko Chemical Industry Co., Ltd.

[0253] (b) Manufacturing of rubber composition for lining

[0254] Using a Banbury mixer, materials excluding zinc oxide, sulfur, and vulcanization accelerator were mixed at 150°C for 5 minutes according to the formulation contents shown in Table 1 to obtain the compound product. All mixing amounts are parts by weight. For convenience, Table 1 also shows the E measured later. * i , tanδ i and Tg i .

[0255] [Table 1]

[0256]

[0257] Next, zinc oxide, sulfur, and vulcanization accelerator are added to the resulting compound and mixed at 80°C for 5 minutes using open rollers to obtain a rubber composition for lining.

[0258] 2. Manufacturing of electronic component mounting materials

[0259] Electronic component mounting components were manufactured separately.

[0260] Specifically, in addition to using BR (UBEPOL BR130B manufactured by Ube Industries, Ltd.) and NBR (Nipol DN401LL manufactured by Nippon Zeon Co., Ltd.), the same compounding materials as the rubber composition for the lining were used as rubber components, and the rubber composition for electronic component mounting parts was obtained by mixing in the same manner according to the compounding contents shown in Table 2. For convenience, Table 2 also shows the E measured later. * r and Tg r .

[0261] [Table 2]

[0262]

[0263] Next, the obtained electronic component mounting parts are vulcanized with a rubber composition and molded as follows. Figure 3 The shape shown is that the storage space S has a circular cross-section and the diameter (outer diameter) D of the mating surface A is 40 mm, the thickness (height) H is 25 mm, the thickness T of the mating part is 1 mm, and the width W of the flange is 10 mm, in order to produce electronic component mounting parts.

[0264] 3. Testing tire manufacturing

[0265] (1) Tires before manufacturing and installing electronic component mounting parts

[0266] First, manufacture the tires before installing the electronic components.

[0267] Specifically, rubber compositions having the corresponding formulations shown in Tables 3 to 5 are molded to obtain inner liners with the corresponding thicknesses shown in Tables 3 to 5, and then bonded together with other tire components to form an uncured tire. The tire is then pressure-cured at 170°C for 10 minutes to obtain the tire before mounting the electronic component mounting parts. Here, since the inner liner is directly bonded to the surface of the carcass layer, the thickness d from the surface of the carcass layer to the inner bore side surface of the tire's internal components is... i It has the same thickness as the lining.

[0268] (2) Testing the manufacturing of tires

[0269] Next, the mounting positions of the electronic component mounting components shown in Tables 3 to 5 were polished on the inner surface of the tire before the installation of each electronic component mounting part to remove the release agent using the polishing methods shown in Tables 3 to 5. After removing the release agent, the electronic component mounting parts, in which predetermined electronic components were stored in the storage space, were installed using an adhesive to manufacture the test tires of Examples 1 to 6 and Comparative Examples 1 to 5. The width m of the center offset line CL of the electronic component mounting part was set to 2 mm. A commercially available neoprene adhesive was used as the adhesive.

[0270] In laser polishing, a laser beam with a moving pitch of 60 μm and a moving speed of 4000 mm / s is used to move back and forth multiple times at the mounting position of the electronic component mounting part to scrape off the release agent and rubber surface, thereby creating a step difference of 95 μm.

[0271] 4. Parameter Calculation

[0272] Subsequently, for each test tire, a 20mm long, 4mm wide, and 1mm thick viscoelasticity test piece was cut from the inner liner of the tread, with the long side along the tire circumference. For each test piece, the composite elastic modulus E was measured using a GABO Eplexor series rubber under the following conditions. * i (MPa): Measurement temperature: 0℃, initial strain: 10%, dynamic strain: ±1%, frequency: 10Hz, deformation mode: tension; and the loss tangent (0℃tanδ) was measured under the following conditions: measurement temperature: 0℃, initial strain: 10%, dynamic strain: ±2.5%, frequency: 10Hz, deformation mode: tension.

[0273] In addition, the composite elastic modulus E of the electronic component mounting component was measured in the same manner as described above by cutting a viscoelasticity measuring test piece with a length of 20 mm, a width of 4 mm, and a thickness of 1 mm from the joint. * r (MPa). Furthermore, the Tg (°C) of each rubber composition from formulations 1 to 13 was calculated using the following method, i.e., Tg i (°C) and Tg r (°C).

[0274] The tanδ temperature distribution curves were measured using an Eplexor series instrument manufactured by GABO under the following conditions: frequency of 10 Hz, initial strain of 10%, amplitude of ±0.5%, and heating rate of 2 °C / min. The tanδ peak temperature corresponding to the maximum tanδ value in the measured temperature distribution curve was then defined as the glass transition point (Tg).

[0275] The measurement results are shown in Tables 1 and 2.

[0276] Then, based on the above measurement results, the E value for each test tire is calculated. * r / E * i and Tg i -Tg r The results are shown in Tables 3 through 5. The composite modulus of elasticity, loss tangent, and Tg (°C) were measured for each manufactured test tire, and average values ​​are shown for those using the same rubber composition.

[0277] 5. Evaluation Test

[0278] The peel resistance under actual high-speed driving conditions was evaluated.

[0279] (1) Test method

[0280] Each test tire was mounted on all wheels of the vehicle (a domestically produced FF vehicle with a 2000cc engine). After being inflated to an internal pressure of 230 kPa, the vehicle was overloaded and driven at 80 km / h on a dry road test track, running over protrusions set on the road surface. After driving, it was observed whether the electronic component mounting parts were detached from the inner surface of the tire.

[0281] If the part is not removed, increase the driving speed by 5 km / h and make the same observation. Then repeat the same observation until the driving speed reaches the maximum of 140 km / h and obtain the speed at which the part is removed.

[0282] Then, the result of Comparative Example 5 was set to 100 and indexed according to the following formula to relatively evaluate the peel resistance at actual high speeds. The larger the value, the better the peel resistance at actual high speeds, and the less likely it is to peel.

[0283] Peel resistance at actual high speed = [(Result of test tire) / (Result of Comparative Example 5)] × 100

[0284] (2) Evaluation Results

[0285] The evaluation results are shown in Tables 3 to 5. Tables 3 to 5 again show the E values ​​for each composition. * i E * r 0℃tanδ i Tg i and Tg r .

[0286] [Table 3]

[0287]

[0288] [Table 4]

[0289]

[0290] [Table 5]

[0291]

[0292] A comparison of Tables 3 and 4 shows that when E * r / E * i When the value is less than 1 (Examples 1 to 6), tires that exhibit excellent peel resistance during actual high-speed driving can be provided.

[0293] Furthermore, a comparison of Examples 1 to 11 shows that when tanδ is at 0°C... i When the value is below 0.55, the peel resistance during actual high-speed driving is greatly improved, and when it is below 0.35, it is further improved.

[0294] Furthermore, a comparison of Examples 3 to 11 shows that when Tg is satisfied... i -Tg r When the value is less than 0, the peel resistance during actual high-speed driving is further improved.

[0295] Furthermore, it can be seen from Examples 7 to 11 that when the liner thickness d i Increased to 1mm, E * r / E * i <0.95, and Tg i -Tg r When the value is less than -2.0, it can provide tires with excellent peel resistance during actual high-speed driving.

[0296] Although this disclosure has been described above based on embodiments, this disclosure is not limited to the embodiments described above. Various modifications can be made to the above embodiments within the same and equivalent scope as this disclosure.

[0297] This disclosure (1) is a tire in which electronic component mounting parts for incorporating electronic components are mounted on the surface of internal tire components, wherein

[0298] The electronic component mounting component has an electronic component storage section for storing the electronic component, and a mating section having a mating surface for mounting the electronic component mounting component to the surface of the tire internal component; and

[0299] The composite elastic modulus E of the joint at 0°C *r (MPa) and the composite elastic modulus E of the tire internal components at 0°C * i (MPa) satisfies the following (Equation 1):

[0300] E * r / E * i <1 (Equation 1).

[0301] This disclosure (2) is a pneumatic tire as described in this disclosure (1), wherein the wear tangent of the internal components of the tire at 0°C is (0°C tanδ). i The value is below 0.55.

[0302] This disclosure (3) is a pneumatic tire as described in this disclosure (2), wherein the wear tangent (0°C tanδ) of the internal components of the tire is... i The value is below 0.35.

[0303] This disclosure (4) is a pneumatic tire of any combination of disclosures (1) to (3), having at least one carcass layer on the radially inner side of the tread, and wherein the thickness d from the radially inner surface of the innermost carcass layer to the radially inner surface of the tire's internal components is... i (mm) is 0.6mm or more.

[0304] This disclosure (5) is a pneumatic tire of any combination of disclosures (1) to (4), wherein the glass transition point Tg of the joint is... r (°C) and the glass transition point Tg of the internal components of the tire i (°C) satisfies the following (Equation 2):

[0305] Tg i -Tg r <0 (Equation 2).

[0306] This disclosure (6) is an inflatable tire of any combination of disclosures (1) to (5), wherein the side facing the mating surface in the electronic component storage section of the electronic component mounting component is open.

[0307] This disclosure (7) is an inflatable tire of any combination of disclosures (1) to (6), wherein the electronic component mounting component is mounted on the surface of a pre-polished tire interior component.

[0308] This disclosure (8) is an inflatable tire of any combination of disclosures (1) to (7), wherein the electronic component mounting component is mounted on the surface of the tire’s internal components using an adhesive.

[0309] This disclosure (9) is an inflatable tire of any combination of disclosures (1) to (8), wherein, in the tire cross section, the center of the electronic component mounting component is located in the two central regions closest to the tire equatorial plane among four regions, the four regions being divided by a line extending radially parallel to the tire from a line that divides the area between the two grounding edges forming the tread contact width into four equal parts.

[0310] This disclosure (10) is a pneumatic tire of any combination of disclosures (1) to (9), which is a tire for passenger vehicles.

[0311] [Description of reference numerals in the attached figures]

[0312] 1 tire

[0313] 2 Electronic component mounting components

[0314] 3 Tread Surface

[0315] 11 tread

[0316] 12 belts

[0317] 13 sidewalls

[0318] 14 fetal layers

[0319] 15 tire bead core

[0320] 16-inch tire bead triangle

[0321] 17 Bead Wrap

[0322] 18 clamping parts

[0323] 19. Tire internal components (liner)

[0324] 21 Electronic Components Storage Department

[0325] 22 Joint

[0326] 31-week channel

[0327] 32a, 32d transverse grooves

[0328] 33 patterned grooves

[0329] 34 The region closest to the equatorial plane

[0330] 35 tire axial outer area

[0331] dt tread thickness

[0332] Thickness of DR electronic component mounting parts

[0333] A joint surface

[0334] CL tire centerline

[0335] centerline of cl electronic component mounting components

[0336] D. Diameter (outer diameter) of the mating surface

[0337] The upper end of E1 (on the side of the electronic component storage section facing the bonding surface)

[0338] E2 lower end (on the bonding surface side of the electronic component storage section)

[0339] H. Thickness (height) of electronic component mounting parts

[0340] Tire inner surface

[0341] The offset width between the center of the m electronic component mounting part and the centerline CL

[0342] S storage space

[0343] Thickness of T-joint

[0344] VL dashed line

[0345] W flange width

Claims

1. A tire, wherein electronic component mounting parts for incorporating electronic components are mounted on the surface of internal tire components, wherein... The electronic component mounting component has an electronic component storage section for storing the electronic component, and a mating section having a mating surface for mounting the electronic component mounting component to the surface of the tire internal component; and The composite elastic modulus of the joint at 0°C r (MPa) and the composite elastic modulus of the tire internal components at 0°C i (MPa) satisfies the following equation 1: r / i < 1, Equation 1 in, r and i It was measured under the following conditions according to JIS K 6394: measurement temperature: 0℃, initial strain: 10%, dynamic strain: ±1%, frequency: 10 Hz, deformation mode: elongation; The wear tangent of the internal components of the tire at 0°C (0°C tan δ) i The value is below 0.55; and Wherein, the loss tangent (0℃ tan δ) i The values ​​were measured under the following conditions: measurement temperature: 0℃, initial strain: 10%, dynamic strain: ±2.5%, frequency: 10 Hz, deformation mode: tension.

2. The tire as claimed in claim 1, wherein, The wear tangent of the internal components of the tire (0℃ tan δ) i The value is below 0.

35.

3. The tire as claimed in claim 1 or 2, having at least one carcass layer on the radially inner side of the tread portion, and wherein the thickness d from the radially inner surface of the innermost carcass layer to the radially inner surface of the tire's internal components is... i (mm) is 0.6 mm or more.

4. The tire as claimed in claim 1 or 2, wherein, The glass transition point Tg of the joint r (°C) and the glass transition point Tg of the internal components of the tire i (°C) satisfies the following equation 2: Tg i Tg r < 0, Equation 2.

5. The tire as claimed in claim 1 or 2, wherein, In the electronic component storage section of the electronic component mounting component, the side facing the mating surface is open.

6. The tire as claimed in claim 1 or 2, wherein, The electronic component mounting component is mounted on the surface of a pre-polished internal tire component.

7. The tire as claimed in claim 1 or 2, wherein, The electronic component mounting parts are attached to the surface of the tire's internal components using an adhesive.

8. The tire as claimed in claim 1 or 2, wherein, In the tire cross-section, the center of the electronic component mounting component is located in the two central regions closest to the tire equator in four regions, which are divided by a line extending radially parallel to the tire, starting from a line that divides the area between the two ground edges that will form the tread contact width into four equal parts.

9. The tire as claimed in claim 1 or 2, wherein it is a tire for a passenger vehicle.

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