Tire

Abstract

A tire is provided in which cracks do not occur in tire interior members during high-speed running, and occurrence of tire air leakage and detachment of an electronic component mounting member is suppressed. A tire in which an electronic component mounting member for an inbuilt electronic component is mounted on a surface of a tire interior member, wherein the electronic component mounting member has an electronic component storage portion for storing an electronic component and a joint portion provided with a joint surface for mounting the electronic component mounting member on the surface of the tire interior member, and an acetone extraction weight AE r (mass %) of the electronic component mounting member and an acetone extraction weight AE i (mass %) of the tire interior member satisfy (Formula 1): AE r / AE 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. Therefore, if they are directly attached to a rubber tire and driven at high speeds, cracks may appear in the internal components of the tire during driving, leading to tire leaks and the detachment of the electronic component mounting parts. Therefore, further improvements are needed.

[0011] Therefore, the purpose of this disclosure is to provide a tire in which cracks do not occur in the internal components during high-speed driving, and to suppress tire leakage and peeling of electronic component mounting parts.

[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] acetone extraction amount AE of the electronic component mounting component r (mass%) and acetone extraction amount AE of the internal components of the tire i (mass%) satisfies the following (Equation 1):

[0017] AE r / AE i >1 (Equation 1).

[0018] [Invention Effects]

[0019] According to this disclosure, a tire can be provided in which cracks do not appear in the internal components of the tire during high-speed driving, and tire leakage and peeling of electronic component mounting parts are suppressed. 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. Additionally, the acetone extraction amount AE of the electronic component mounting member is... r (mass%) and acetone extraction amount AE of the internal components of the tire i (mass%) satisfies the following (Equation 1).

[0028] AE r / AE i > 1 (Equation 1)

[0029] By using tires as described above, as will be explained later, the occurrence of cracks in the internal components of the tire can be suppressed even during high-speed driving, thereby suppressing tire leakage and peeling of electronic component mounting parts during driving.

[0030] In the above description, the acetone extraction amount AE is the ratio (mass%) of the amount (mass) reduced due to extraction, which is obtained by measuring the acetone extraction amount of each test piece cut from the electronic component mounting part and the tire internal part according to JIS K 6229.

[0031] More specifically, each vulcanized rubber test piece was immersed in acetone at room temperature under normal pressure for 72 hours to extract soluble components, and the mass of each test piece before and after extraction was measured, which can be obtained by the following formula.

[0032] Acetone extraction yield (%) = {(mass of rubber specimen before extraction) - (mass of rubber specimen after extraction) / (mass of rubber specimen before extraction)} × 100

[0033] 2. The performance mechanism of the tire disclosed herein

[0034] The performance mechanism of the tire disclosed herein is believed to be as follows.

[0035] As described above, in the tire of this disclosure, electronic component mounting parts are mounted on the surface of tire internal components arranged in the tire bore. However, tire internal components, such as the inner liner, are typically coated with a softener component, such as oil. As this softener component escapes from the tire internal components over time, the tire internal components harden and lose their flexibility.

[0036] If components with different hardness (such as electronic component mounting parts) are installed on the hardened part, the joint will be subjected to greater stress due to the difference in their rigidity. This can lead to cracks, tire leaks, and peeling of electronic component mounting parts during high-speed driving.

[0037] Therefore, in this disclosure, the acetone extraction amount AE of the electronic component mounting component is... r (mass%) and acetone extraction amount of tire internal components AE i (mass%) satisfies AER / AEi>1 (Equation 1).

[0038] That is, since acetone extraction amount (AE) can be considered an indicator of the content of easily migrating softener components, the above-mentioned AE... r / AE i >1 (Equation 1) indicates that the content of plasticizer in the electronic component mounting parts is greater than that in the tire internal parts. AE r / AE i Preferably greater than 1.1, more preferably greater than 1.2, and even more preferably greater than 1.3. On the other hand, it is preferably less than 1.65, more preferably less than 1.60, even more preferably less than 1.55, and even more preferably less than 1.51.

[0039] In this way, by making the content of the softener component in the electronic component mounting parts greater than that in the tire internal parts, the softener component in the electronic component mounting parts migrates to the tire internal parts. It is believed that this inhibits hardening over time and suppresses crack formation during high-speed driving. As a result, it is conceivable that tire leaks and peeling of electronic component mounting parts during high-speed driving can be suppressed.

[0040] The acetone extraction yield mentioned above can be measured according to JIS K 6229:2015 (extraction time: 10 hours).

[0041] Acetone extraction amount AE for electronic component mounting parts r Preferably less than 12% by mass, more preferably less than 11.5% by mass, even more preferably less than 11.3% by mass, and even more preferably 11% by mass. On the other hand, it is preferably greater than 6.5% by mass, more preferably greater than 7% by mass, even more preferably greater than 7.5% by mass, and even more preferably greater than 8.9% by mass.

[0042] Acetone extraction rate (AE) of internal tire components iPreferably less than 13% by mass, more preferably less than 12.2% by mass, even more preferably less than 12% by mass, even more preferably less than 11.9% by mass, and even more preferably less than 11% by mass. On the other hand, it is preferably greater than 6.5% by mass, more preferably greater than 7% by mass, even more preferably 7.5% by mass or more, even more preferably greater than 7.5% by mass, and even more preferably 8.5% by mass or more.

[0043] 3. Preferred embodiments of the tire disclosed herein.

[0044] Furthermore, the tire disclosed herein is preferably implemented in the following manner.

[0045] (1) The bonding area between the joint of the electronic component mounting part and the internal tire part.

[0046] In the tire disclosed herein, the bonding area between the joint of the electronic component mounting component and the internal tire components is preferably 12 cm². 2 above.

[0047] Since the migration of the aforementioned softener components occurs at the adhesive joint between the electronic component mounting part and the tire internal parts, a larger adhesive area is preferred. Specifically, if the adhesive area is 12 cm²... 2 The above allows sufficient softener components to migrate, adequately suppressing crack formation. A more preferable bonding area is 13 cm². 2 The above is further optimized to 14cm. 2 The above is further optimized to 28.26cm. 2 That's all. On the other hand, it is preferably less than 75cm. 2 More preferably less than 70cm 2 More preferably less than 65cm 2 .

[0048] (2) Complex elastic modulus of electronic component mounting components and tire internal components

[0049] In this disclosure, preferably, the complex elastic modulus E of the joint at 70°C * r (MPa) and the complex elastic modulus E of the tire internal components at 70°C * i (MPa) satisfies 0.5E * i ≦E * r ≤3.0E * i (Equation 2). Complex elastic modulus E * r (MPa) and complex elastic modulus E *i The pressure (MPa) was measured under the following conditions: temperature 70℃, initial strain 10%, dynamic strain ±1%, frequency 10Hz, and deformation mode elongation.

[0050] Complex elastic modulus E * It is a parameter related to rigidity, and is determined by controlling the complex elastic modulus E of the electronic component mounting components. * r and the complex elastic modulus E of the internal components of the tire * i To meet 0.5E * i ≦E * r ≤3.0E * i (Equation 2) prevents the stiffness difference between them from increasing beyond what is needed, thus suppressing the stress applied to the joint and suppressing the initiation of cracks. More preferably, 1.0E * i ≦E * r ≤2.95E * i More preferably, 1.5E * i ≦E * r ≤2.9E * i .

[0051] In the above description, E * r and E * i It is measured using a viscoelasticity measuring device such as "Eplexor (registered trademark)" manufactured by GABO, in accordance with JIS K 6394.

[0052] (3) Wear tangent of internal tire components

[0053] In this disclosure, the wear tangent of the internal components of the tire at 70°C (70°C tanδ) i The preferred value is below 0.18. Loss tangent (70℃ tanδ) i The measurement was performed under the following conditions: measurement temperature: 70℃, initial strain: 10%, dynamic strain: ±1%, frequency: 10Hz, deformation mode: tension.

[0054] The loss tangent (tanδ) can be expressed as loss elastic modulus (E″) / storage elastic modulus (E′) (tanδ = E″ / E′), and the smaller the tanδ, the less viscous component there is.

[0055] By reducing the viscous components in the tire's internal components, the 70℃ tanδ requirement is met. i ≤0.18, coupled with the concentration gradient of the softener component between the electronic component mounting parts and the tire internal components, the softener component easily migrates from the electronic component mounting parts. As a result, hardening of the tire internal components is more effectively suppressed, and the occurrence of cracks can be inhibited. 70℃tanδ i More preferably, it is 0.17 or less, even more preferably 0.15 or less, even more preferably 0.14 or less, and even more preferably 0.13 or less. Although there is no limitation on the lower limit, it is preferably 0.01 or more, more preferably 0.05 or more, and even more preferably 0.1 or more.

[0056] In the above description, similar to E * The measurement of tanδ i For example, a viscoelasticity measuring device such as "Eplexor (registered trademark)" manufactured by GABO can be used to measure it. [2] Detailed Implementation

[0058] 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.

[0059] 1. Tire Construction

[0060] 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.

[0061] like Figure 1 As shown, the electronic component mounting component 2 is first placed on the inner surface I of the tire, that is, on the surface of the inner liner 19. At this time, in order to mitigate the impact applied to the electronic component mounting component, a line passing through the center point of the contact surface of the electronic component mounting component with the inner surface of the tire and perpendicular to the surface profile of the tread portion is arranged so as not to pass through the circumferential groove 31 formed on the surface 3 of the tread portion.

[0062] Here, the surface profile of the tread portion is the surface shape formed by connecting the land surface of the contact surface of the tread portion of a tire mounted on a "standardized rim," subjected to "standardized internal pressure," and in an unloaded state. For example, it can be confirmed by virtually connecting adjacent land portions to a bead portion with a cross-section of approximately 2 cm in width cut radially from the tire according to the applicable rim width.

[0063] Furthermore, to obtain monitoring information with high accuracy and stability, the electronic component mounting components are preferably arranged such that, in the tire cross-section, the center of the electronic component mounting components is located in the two central regions closest to the tire equatorial plane 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) in the tire width direction on the bore surface of the tire. Although not shown, the electronic components are integrated into the electronic component mounting member 2. Here, because the amount of deformation on the tire's centerline CL is particularly large, it is preferable that the centerline CL and the center of the electronic component mounting member are offset, and the width of this offset is preferably 1 to 50 mm in the tire axial direction.

[0064] 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 2 In (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).

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] "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".

[0071] 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".

[0072] 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.

[0073] 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.

[0074] 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 2. Internal tire components (liner)

[0084] 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.

[0085] (1) Rubber composition constituting the internal components (liner) of a tire

[0086] 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.

[0087] (a) Rubber composition

[0088] Examples of rubber components in lining rubber compositions include diene rubbers, such as isoprene rubbers, 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.

[0089] (a-1) Butyl rubber

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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 25 parts by mass or less, more preferably 30 parts by mass or less.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] (a-3) Other rubbers

[0101] 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.

[0102] (b) Compound materials other than rubber components

[0103] (b-1) Compatibilizer

[0104] The purpose of including compatibilizers is to reduce the separation energy at the interface between the polymer and the filler or between different polymers and to facilitate mixing. There are no particular limitations on compatibilizers, and those commonly used in the rubber industry can be used. Specific examples of compatibilizers include non-reactive compatibilizers such as styrene-ethylene-butadiene block copolymers, styrene-methyl methacrylate block copolymers, ethylene-styrene graft copolymers, chlorinated polyethylene, aromatic hydrocarbon resins, aliphatic hydrocarbon resin-based mixtures, and unsaturated fatty acid metal soaps; and reactive compatibilizers such as maleic anhydride-grafted polypropylene, styrene-maleic anhydride copolymers, ethylene-glycidyl methacrylate copolymers, and ethylene-glycidyl methacrylate-styrene graft copolymers. Compatibilizers can be used alone or in combination of two or more.

[0105] There is no particular limitation on the content of the compatibilizer, but considering air barrier properties, it is preferably 5 parts by mass or more, more preferably 8 parts by mass or more, relative to 100 parts by mass of rubber component. On the other hand, it is preferably 15 parts by mass or less, more preferably 12 parts by mass or less.

[0106] (b-2) Softener components

[0107] From the viewpoint of sheet processing, the rubber composition for lining preferably contains oil (including filler oil) or liquid rubber as a softening agent. The total content of these components is preferably 3 parts by mass or more, more preferably 4 parts by mass or more, relative to 100 parts by mass of the rubber composition. On the other hand, it is preferably 9 parts by mass or less, more preferably 6 parts by mass 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, mentioned as a softener component, 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 compounds.

[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) Carbon black

[0121] (b-3-1) Carbon Black

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] (b-3-2)Silica

[0127] 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.

[0128] 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.

[0129] 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.

[0130] As silica, products from companies such as Degussa Co., Ltd., Rhodia Co., Ltd., TosohSilica Co., Ltd., Solvay Japan Co., Ltd., and Tokuyama Co., Ltd. can be used.

[0131] There are no particular limitations on silane coupling agents. Examples of silane coupling agents include:

[0132] 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;

[0133] Thiol-based silane coupling agents, such as 3-mercaptopropyltrimethoxysilane, 2-mercaptoethyltriethoxysilane, and NXT and NXT-Z manufactured by Momentive;

[0134] Vinyl silane coupling agents, such as vinyltriethoxysilane and vinyltrimethoxysilane;

[0135] Aminosilane coupling agents, such as 3-aminopropyltriethoxysilane and 3-aminopropyltrimethoxysilane;

[0136] Glycidyl ether oxysilane coupling agents, such as γ-glycidyl ether oxypropyltriethoxysilane and γ-glycidyl ether oxypropyltrimethoxysilane;

[0137] Nitrosilane coupling agents, such as 3-nitropropyltrimethoxysilane and 3-nitropropyltriethoxysilane; and

[0138] Chlorinated silane coupling agents, such as 3-chloropropyltrimethoxysilane and 3-chloropropyltriethoxysilane. These can be used alone or in combination of two or more.

[0139] Examples of usable silane coupling agents include products from Degussa Co., Ltd., Momentive Co., Ltd., Shinetsu Silicone Co., Ltd., Tokyo Chemical Industry Co., Ltd., Azumax Co., Ltd., and Toray Dow Corning Co., Ltd.

[0140] 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.

[0141] (b-3-3) Other fillers

[0142] 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.

[0143] (b-4) Anti-aging agents

[0144] 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.

[0145] Examples of anti-aging agents include:

[0146] Naphthylamine anti-aging agents, such as phenyl-α-naphthylamine;

[0147] Diphenylamine anti-aging agents, such as octyl diphenylamine and 4,4′-bis(α,α′-dimethylbenzyl)diphenylamine;

[0148] 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;

[0149] 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;

[0150] Monophenolic anti-aging agents, such as 2,6-di-tert-butyl-4-methylphenol and styreneated phenol; and

[0151] 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.

[0152] 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.

[0153] (b-5) Stearic acid

[0154] 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.

[0155] (b-6) Zinc oxide

[0156] 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.

[0157] (b-7) Crosslinking agents and vulcanization accelerators

[0158] 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.

[0159] 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.

[0160] 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.

[0161] 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.

[0162] 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.

[0163] Examples of vulcanization accelerators include:

[0164] Thiazole-based vulcanization accelerators, such as 2-mercaptobenzothiazole, di-2-benzothiazole disulfide, and N-cyclohexyl-2-benzothiamide;

[0165] Thiuram-based vulcanization accelerators, such as tetramethylthiuram disulfide (TMTD), tetrabenzylthiuram disulfide (TBzTD), and tetra(2-ethylhexyl)thiuram disulfide (TOT-N);

[0166] 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

[0167] Guanidine vulcanization accelerators, such as diphenylguanidine, di-o-tolylguanidine, and o-tolylbiguanidine. These can be used alone or in combination of two or more.

[0168] (2) Preparation of tire internal components (liner)

[0169] 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.

[0170] Mixing can be carried out using known (closed) mixing machines such as Banbury mixers, mixing mills, or open rolls.

[0171] 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.

[0172] 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.

[0173] At this point, for example, the acetone extraction rate (AE) of the lining can be adjusted by adjusting the amount of fillers such as carbon black or silica, or by adjusting the amount of oil. i E * i and tanδ at 70℃ i In order to meet the above conditions. For example, E can be increased by increasing the amount of packing material. * and tanδ.

[0174] The liner is then produced by molding the resulting liner with a rubber composition to a predetermined thickness.

[0175] 3. Electronic component mounting components

[0176] 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.

[0177] (1) A rubber composition constituting an electronic component mounting component

[0178] 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 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.

[0179] When SBR and NR are used as rubber components, the content of SBR in 100 parts by weight is, for example, 40 to 60 parts by weight, and the content of NR is, for example, 40 to 60 parts by weight.

[0180] SBR, which is a rubber composition constituting internal components of tires but not described in detail below, will be described below. The weight-average molecular weight of SBR is, for example, greater than 100,000 and less than 2,000,000. The styrene content of SBR is preferably greater than 5% by mass, more preferably greater than 10% by mass, and even more preferably greater than 20% by mass. On the other hand, it is preferably less than 50% by mass, more preferably less than 40% by mass, and even more preferably less than 35% by mass. The vinyl binding content of SBR (content of 1,2-bonded butadiene units) is, for example, greater than 5% by mass and less than 70% by mass. The structural identification of SBR (measurement of styrene content and vinyl binding content) can be performed, for example, using equipment from the JNM-ECA series manufactured by JEOL Ltd.

[0181] There are no particular limitations on SBR; for example, emulsion-polymerized styrene-butadiene rubber (E-SBR) and solution-polymerized styrene-butadiene rubber (S-SBR) can be used. SBR can be unmodified or modified.

[0182] Modified SBRs can be SBRs with functional groups that interact with fillers such as silica. Examples include:

[0183] Terminally modified SBR (SBR with the aforementioned functional groups at its ends), wherein at least one end of the SBR is modified by a compound (modifier) ​​having the aforementioned functional groups.

[0184] SBR with functional groups on the main chain,

[0185] SBRs with functional groups on both the main chain and the ends (e.g., SBRs with the aforementioned functional groups on the main chain and at least one end modified by the aforementioned modifier, and...)

[0186] SBRs modified (coupled) by polyfunctional compounds having two or more epoxy groups in the molecule and by introducing terminal modifications of epoxy or hydroxyl groups.

[0187] Examples of functional groups include amino, amide, silyl, alkoxysilyl, isocyanate, imino, imidazo, urea, ether, carbonyl, oxycarbonyl, mercapto, thioether, dithioether, sulfonyl, sulfinyl, thiocarbonyl, ammonium, imide, hydrazine group, azo, diazo, carboxyl, nitrile, pyridyl, alkoxy, hydroxyl, oxygen, and epoxy. Additionally, these functional groups may have substituents.

[0188] As a modified SBR, for example, an SBR modified with a compound (modifier) ​​represented by the following formula can be used.

[0189] [Chemical Formula 1]

[0190]

[0191] 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.

[0192] As a modified SBR modified by a compound (modifier) ​​represented by the above formula, an SBR in which the polymerization end (active end) of solution-polymerized styrene-butadiene rubber (S-SBR) is modified by a compound represented by the above formula (e.g., the modified SBR described in JP-A-2010-111753).

[0193] 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 5When 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).

[0194] 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.

[0195] In addition, modified SBRs can also be used as modified SBRs by the following compounds (modifiers). Examples of modifiers include:

[0196] Polyhydric alcohol polyglycidyl ethers, such as ethylene glycol diglycidyl ether, glycerol triglycidyl ether, trimethylolethane triglycidyl ether and trimethylolpropane triglycidyl ether;

[0197] Polyglycidyl ethers of aromatic compounds having two or more phenolic groups, such as diglycidylated bisphenol A;

[0198] Polyepoxides, such as 1,4-diglycidylbenzene, 1,3,5-triglycidylbenzene and polyepoxide liquid polybutadiene;

[0199] Tertiary amines containing epoxy groups, such as 4,4'-diglycidyl-diphenylmethylamine and 4,4'-diglycidyl-dibenzylmethylamine;

[0200] 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;

[0201] 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;

[0202] Silane compounds containing epoxy groups, such as 1,3-bis-(glycidoxypropyl)-tetramethyldisiloxane and (3-glycidoxypropyl)-pentamethyldisiloxane;

[0203] 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;

[0204] N-substituted aziridine compounds, such as ethyleneimine and propyleneimine;

[0205] 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;

[0206] (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;

[0207] 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;

[0208] 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;

[0209] N-substituted piperidinones, such as methyl-2-piperidinone, N-vinyl-2-piperidinone and N-phenyl-2-piperidinone;

[0210] 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

[0211] 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.

[0212] As an SBR, one can use SBR manufactured and sold by companies such as Sumitomo Chemical Co., Ltd., JSR Co., Ltd., Asahi Kasei Co., Ltd., and Nippon Zeon Co., Ltd. SBR can be used alone or in combination with two or more other types.

[0213] (2) Preparation of rubber composition for mounting parts of electronic components

[0214] 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 acetone extraction rate (AE) can be adjusted by regulating the mixing amounts of fillers such as carbon black and silica, and by regulating the mixing amounts of oil and resin components. r and 70℃ E * r To meet the above conditions.

[0215] (3) Production of electronic component mounting parts

[0216] 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.

[0217] 4. Tire manufacturing

[0218] (1) Manufacturing tires before installing electronic component mounting parts.

[0219] 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.

[0220] 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.

[0221] 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.

[0222] (2) Installation of electronic component mounting components

[0223] 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.

[0224] 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.

[0225] 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.

[0226] 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.

[0227] 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.

[0228] 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.

[0229] 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.

[0230] 5. Applications

[0231] 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.

[0232] 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.

[0233] 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.

[0234] Example

[0235] In the following embodiments, a material having Figure 1 The tire with the structure shown (size: 195 / 65R15) was tested, and the crack resistance of the tire's internal components (liner) for the electronic component mounting parts 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] (a-1-1)NR: RSS#3

[0243] (a-1-2)IIR-1: Bromobutyl 2255 (bromobutyl rubber) manufactured by Exxon Chemical Co., Ltd.

[0244] (a-1-3)IIR-2: Recycled butyl rubber manufactured by Carquest Co., Ltd. (Butyl rubber: 50% by mass)

[0245] (a-2) Compound materials other than rubber components

[0246] (a-2-1) Carbon black: Show Black N660 manufactured by Cabot Japan Co., Ltd.

[0247] (a-2-2) Calcium carbonate: Tankal 200 manufactured by Takehara Chemical Industry Co., Ltd.

[0248] (a-2-3) Oil: Diana Process PA32 (paraffin processing oil) manufactured by Idemitsu Kosan Co., Ltd.

[0249] (a-2-4) Compatibilizer: PROMIX400 (a mixture of aliphatic and aromatic resins) manufactured by Flow Polymers Inc.

[0250] (a-2-5) Anti-aging agent: Antage RD (2,2,4-trimethyl-1,2-dihydroquinoline) manufactured by Kawaguchi Chemical Industry Co., Ltd.

[0251] (a-2-6) Stearic acid: TSUBAKI manufactured by NOF Corporation

[0252] (a-2-7) Zinc oxide: Two types of zinc oxide manufactured by Mitsui Mining & Smelting Co., Ltd.

[0253] (a-2-8) Sulfur: HK-200-5 (containing 5% by mass of oil) manufactured by Hosoi Chemical Co., Ltd.

[0254] (a-2-9) Vulcanization accelerator: Nocceler DM (di-2-benzothiazolyl disulfide) manufactured by Ouchi Shinko Chemical Industry Co., Ltd.

[0255] (b) Manufacturing of rubber composition for lining

[0256] 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 AE measured later. i E * i and tanδ i .

[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] [Table 1]

[0259]

[0260] (2) Manufacturing of the lining

[0261] Next, the liner is manufactured by molding the obtained rubber composition for the liner into a predetermined shape.

[0262] 2. Manufacturing of electronic component mounting parts

[0263] Electronic component mounting components were manufactured separately.

[0264] (1) Manufacturing of rubber compositions for mounting parts of electronic components

[0265] (a) Mixed materials

[0266] First, the following mixed materials were prepared.

[0267] (a-1) Rubber composition

[0268] (a-1-1)NR: RSS#3

[0269] (a-1-2)SBR: JSR1502 manufactured by JSR Corporation

[0270] (a-2) Compound materials other than rubber components

[0271] (a-2-1) Carbon black: Show Black N220 manufactured by Cabot Japan Co., Ltd.

[0272] (a-2-2) Silica: Zeosil 1115MP manufactured by Rhodia Co., Ltd.

[0273] (a-2-3) Silane coupling agent: Si266 (bis(3-triethoxysilylpropyl) disulfide) manufactured by Degussa Co., Ltd.

[0274] (a-2-4) Calcium carbonate: Tankal 200 manufactured by Takehara Chemical Industry Co., Ltd.

[0275] (a-2-5) Oil: Process X-260 manufactured by Japan Energy Co., Ltd.

[0276] (a-2-6) Anti-aging agent-1: Nocrac6C (N-phenyl-N'-(1,3-dimethylbutyl)-p-phenylenediamine) manufactured by Ouchi Shinko Chemical Industry Co., Ltd.

[0277] (a-2-7) Anti-aging agent-2: Antage RD (2,2,4-trimethyl-1,2-dihydroquinoline) manufactured by Kawaguchi Chemical Industry Co., Ltd.

[0278] (a-2-8) Stearic acid: TSUBAKI manufactured by NOF Corporation

[0279] (a-2-9) Zinc oxide: Two types of zinc oxide manufactured by Mitsui Mining & Smelting Co., Ltd.

[0280] (a-2-10) Sulfur: HK-200-5 (containing 5% by mass of oil) manufactured by Hosoi Chemical Co., Ltd.

[0281] (a-2-11) Vulcanization accelerator-1: Nocceler CZ-G(CZ) (N-cyclohexyl-2-benzothiazolylsulfinamide) manufactured by Ouchi Shinko Chemical Industry Co., Ltd.

[0282] (a-2-12) Vulcanization accelerator-2: Nocceler D(DPG)(1,3-diphenylguanidine) manufactured by Ouchi Shinko Chemical Industry Co., Ltd.

[0283] (b) Manufacturing of rubber compositions for mounting components of electronic components

[0284] Using a Banbury mixer, the components excluding zinc oxide, sulfur, and vulcanization accelerator were mixed at 150°C for 5 minutes according to the formulation contents shown in Table 2 to obtain the compounded product. All mixing amounts are parts by weight. For convenience, Table 2 also shows the AE measured later. r and E * r .

[0285] Next, zinc oxide, sulfur, and a vulcanization accelerator are added to the resulting compound, and the mixture is then kneaded at 80°C for 5 minutes using an open roller to obtain a rubber composition for electronic component mounting parts.

[0286] [Table 2]

[0287]

[0288] (2) Manufacturing of electronic component mounting components

[0289] 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.

[0290] 3. Testing tire manufacturing

[0291] (1) Tires before manufacturing and installing electronic component mounting parts

[0292] First, manufacture the tires before installing the electronic components.

[0293] Specifically, the inner liner with the formulations shown in Tables 3 and 4 is bonded together with other tire components to form an uncured tire, which is then pressure-cured at 170°C for 10 minutes to obtain the tire before the installation of electronic component mounting parts.

[0294] (2) Testing the manufacturing of tires

[0295] Next, the mounting positions of the electronic component mounting components shown in Tables 3 and 4 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 and 4. Subsequently, electronic component mounting parts were manufactured using the compositions shown in Tables 3 and 4 for adhesive mounting, and predetermined electronic components were stored in their storage spaces to have the adhesive areas shown in Tables 3 and 4, thereby manufacturing test tires of Examples 1 to 6 (Table 3) and Comparative Examples 1 to 6 (Table 4). 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.

[0296] 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.

[0297] 4. Parameter Calculation

[0298] 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 complex modulus E was measured using a GABO Eplexor series rubber under the following conditions. * i (MPa): Measurement temperature: 70℃, initial strain: 10%, dynamic strain: ±1%, frequency: 10Hz, deformation mode: elongation; and the loss tangent (70℃ tanδ) was measured under tensile deformation. i ).

[0299] In addition, the complex 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). The results are shown in Tables 1 and 2, and Tables 3 and 4.

[0300] Next, based on the above measurement results, the AE of each test tire is calculated. r / AE i 0.5E *i and 3.0E * i The results are shown in Tables 3 and 4.

[0301] 5. Evaluation Test

[0302] Crack resistance is evaluated, which is the degree to which cracks appear in the tire after a predetermined distance has been traveled.

[0303] (1) Test method

[0304] Each test tire was mounted on all wheels of a vehicle (a domestically produced FF vehicle with a 2000cc engine), and after being inflated to an internal pressure of 230 kPa, it was driven at 80 km / h on a dry road test track. After driving 1000 km, the tires were removed from the rims, and the number of cracks and the length of each crack were measured on the surface of the internal components of the tires.

[0305] The evaluation is based on the total length of cracks with a length of 1 mm or more. Specifically, as shown in the following formula, the reciprocal of the ratio of the total crack length obtained in each test tire to the total crack length obtained in Comparative Example 1 is indexed, and a relative evaluation is performed. A larger value indicates fewer cracks.

[0306] Crack resistance = (Total length of Comparative Example 1 / Total length of all tested tires) × 100

[0307] (2) Evaluation Results

[0308] The evaluation results are shown in Tables 3 and 4.

[0309] [Table 3]

[0310]

[0311] [Table 4]

[0312]

[0313] The comparison between Tables 3 and 4 shows that when AE r / AE i When >1 (Examples 1 to 6), tires with excellent crack resistance can be provided.

[0314] The comparison of the embodiments in Table 3 shows that when AE r / AE i When the value is above 1.05, the crack resistance is excellent (Examples 1, 2, 4 to 6). It can be seen that in these cases, AE... r Less than 12% by mass, E * i and E * rSatisfying 0.5E * i ≦E * r ≤3.0E * i 70℃tanδ i The case where the tanδ is below 0.18 (Examples 4 to 6) is further superior, and the tanδ at 70°C is also excellent. i The values ​​below 0.15 (Examples 5 and 6) are particularly excellent.

[0315] 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.

[0316] 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

[0317] 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

[0318] acetone extraction amount AE of the electronic component mounting component r (mass%) and acetone extraction amount AE of the internal components of the tire i (mass%) satisfies the following (Equation 1):

[0319] AE r / AE i >1 (Equation 1).

[0320] This disclosure (2) is an inflatable tire as described in this disclosure (1), wherein the acetone extraction amount AER of the electronic component mounting component is less than 12% by mass.

[0321] This disclosure (3) is a pneumatic tire as described in disclosure (1) or (2), wherein the adhesive area between the joint of the electronic component mounting component and the internal components of the tire is 12 cm². 2 above.

[0322] This disclosure (4) is a pneumatic tire as described in this disclosure (3), wherein the adhesive area between the joint of the electronic component mounting component and the internal components of the tire is less than 75 cm². 2 .

[0323] This disclosure (5) is a pneumatic tire of any combination of disclosures (1) to (4), wherein the complex elastic modulus E of the joint at 70°C * r(MPa) and the complex elastic modulus E of the tire internal components at 70°C * i (MPa) satisfies the following (Equation 2):

[0324] 0.5E * i ≦E * r ≤3.0E * i (Equation 2).

[0325] This disclosure (6) is a pneumatic tire of any combination of disclosures (1) to (5), wherein the wear tangent of the internal components of the tire at 70°C (70°C tanδ) i The value is below 0.18.

[0326] This disclosure (7) is a pneumatic tire as described in this disclosure (6), wherein the wear tangent (70°C tanδ) of the internal components of the tire is... i The value is below 0.15.

[0327] This disclosure (8) is an inflatable tire of any combination of disclosures (1) to (7), wherein the internal components of the tire are liners formed of a rubber composition, wherein the rubber composition contains 70 or more butyl rubbers in 100 parts by weight of rubber components.

[0328] This disclosure (9) is an inflatable tire as described in this disclosure (8), wherein the butyl rubber contains less than 30 parts by weight of recycled butyl rubber.

[0329] This disclosure (10) is an inflatable tire of any combination of disclosures (1) to (9), wherein the side facing the mating surface in the electronic component storage section of the electronic component mounting component is open.

[0330] This disclosure (11) is an inflatable tire of any combination of disclosures (1) to (10), wherein the electronic component mounting component is mounted on the surface of the tire's internal components using an adhesive.

[0331] This disclosure (12) is an inflatable tire of any combination of disclosures (1) to (11), 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 of 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 ground edges forming the tread contact width into four equal parts.

[0332] This disclosure (13) is an inflatable tire of any combination of disclosures (1) to (12), which is a tire for passenger vehicles.

[0333] [Description of reference numerals in the attached figures]

[0334] 1. Tires

[0335] 2. Electronic component mounting components

[0336] 3. The surface of the tire tread

[0337] 11. Tread

[0338] 12. Belt

[0339] 13. Sidewall

[0340] 14. Fetal body layer

[0341] 15. Tire bead core

[0342] 16. Tire bead triangle

[0343] 17. Bead wrapping

[0344] 18. Clamping part

[0345] 19. Internal tire components (liner)

[0346] 21. Electronic Component Storage Department

[0347] 22. Joint

[0348] 31. Circumferential groove

[0349] 32a, 32d. Transverse grooves

[0350] 33. Patterned grooves

[0351] 34. The region closest to the equatorial plane

[0352] 35. Tire axial outer area

[0353] dt. Tread thickness

[0354] Thickness of dr. electronic component mounting parts

[0355] A. Joint surface

[0356] CL. Tire centerline

[0357] cl. Centerline of electronic component mounting assembly

[0358] D. Diameter (outer diameter) of the mating surface

[0359] E1. Upper end (on the side of the electronic component storage section facing the mating surface)

[0360] E2. Lower end (on the mating surface side of the electronic component storage section)

[0361] H. Thickness (height) of electronic component mounting parts

[0362] I. Tire inner bore surface

[0363] m. Offset width of the center of the electronic component mounting part

[0364] S. Storage space

[0365] T. Thickness of the joint

[0366] VL. Dashed line

[0367] 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 acetone extraction amount AE of the electronic component mounting component r Acetone extraction amount AE of the internal components of the tire i Satisfy the following equation 1: AE r / AE i > 1 Formula 1 in, The bonding area between the joint of the electronic component mounting part and the internal tire component is 12 cm². 2 above, The tire's internal components are liner formed from a rubber composition, wherein the rubber composition contains at least 70 parts by weight of butyl rubber per 100 parts by weight of the rubber component; and Of the 100 parts by weight of the butyl rubber, the content of recycled butyl rubber is less than 30 parts by weight.

2. The tire as claimed in claim 1, wherein, acetone extraction amount AE of the electronic component mounting component r Less than 12% of the mass.

3. The tire as claimed in claim 1, wherein, The bonding area between the joint of the electronic component mounting part and the internal tire component is less than 75 cm². 2 .

4. The tire as claimed in any one of claims 1 to 3, wherein, The complex elastic modulus of the joint at 70°C r and the complex elastic modulus of the internal components of the tire at 70°C i Satisfy the following equation 2:

0. i ≦ r ≤ 3. i Formula 2.

5. The tire as claimed in any one of claims 1 to 3, wherein, The wear tangent of the internal components of the tire at 70°C is tan δ. i It is below 0.

18.

6. The tire as claimed in claim 5, wherein, The wear tangent of the internal components of the tire is 70°C tan δ i It is below 0.

15.

7. The tire as claimed in any one of claims 1 to 3, wherein, In the electronic component storage section of the electronic component mounting component, the side facing the mating surface is open.

8. The tire as claimed in any one of claims 1 to 3, wherein, The electronic component mounting parts are attached to the surface of the tire's internal components using an adhesive.

9. The tire as claimed in any one of claims 1 to 3, 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 form the tread contact width into four equal parts.

10. The tire as claimed in any one of claims 1 to 3, wherein it is a tire for a passenger vehicle.

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