tire

Abstract

To provide a tire which has high peel resistance such that peeling of an electronic component fitting member from a tire surface is hard to occur even when a large impact is applied thereto during high speed travel under low temperature environment.SOLUTION: In a tire, an electronic component fitting member 2 for incorporating an electronic component is attached to a surface of a tire inner member 19. The electronic component fitting member comprises an electronic component reception part for receiving the electronic component, and a junction including a joint surface for attaching the electronic component fitting member to the surface of the tire inner member. A complex elastic modulus E*r(MPa) of the junction at 0°C and a complex elastic modulus E*i(MPa) of the tire inner member at 0°C satisfy the following formula (formula 1): E*r / E*i<1.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a tire in which an electronic component mounting member having an electronic component built therein is provided on a surface of an inner tire member disposed in a tire cavity. [Background technology]

[0002] In order to ensure a vehicle's comfortable running, it is considered important that the air pressure in the tires be properly managed, and in recent years, it has become common to install a tire pressure monitoring system (TPMS) inside the vehicle (e.g., Patent Documents 1 to 4). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-016185 A [Patent Document 2] JP 2018-199396 A [Patent Document 3] JP 2019-023594 A [Patent Document 4] JP 2019-026218 A Summary of the Invention [Problem to be solved by the invention]

[0004] Sensors such as TPMS are generally made of metal electronic components, so if they are directly attached to rubber tires, there is a concern that they may peel off during rolling. In particular, if a large impact is applied, such as when driving over a step while driving at high speed in a low-temperature environment, there is a concern that the electronic component mounting material may peel off from the tire surface.

[0005] Therefore, an object of the present invention is to provide a tire having excellent peeling resistance that makes it difficult for electronic components to peel off from the tire surface even when a large impact is applied while the tire is running at high speed in a low-temperature environment. [Means for solving the problem]

[0006] The present inventors have conducted extensive research into solving the above problems, and have found that the above problems can be solved by the invention described below, thereby completing the present invention.

[0007] The invention described in claim 1 is A tire in which an electronic component mounting member for incorporating an electronic component is attached to a surface of an inner tire member, the electronic component mounting member includes an electronic component storage portion that stores the electronic component, and a joining portion that includes a joining surface for mounting the electronic component mounting member to a surface of the tire inner member, The joint Measurement temperature: 0℃ Measured under the following conditions: initial strain: 10%, dynamic strain: ±1%, frequency: 10Hz, deformation mode: extension Complex modulus E * r (MPa), and the tire inner member Measurement temperature: 0℃ Measured under the following conditions: initial strain: 10%, dynamic strain: ±1%, frequency: 10Hz, deformation mode: extension Complex modulus E * i (MPa) satisfies the following (Equation 1), The tire is characterized in that the center line of the tire and the center of the electronic component mounting member are offset in the tire width direction, and the offset width is 1 to 50 mm. E * r / E * i <1 ···········(Formula 1)

[0008] The invention described in claim 2 is A tire in which an electronic component mounting member for incorporating an electronic component is attached to a surface of an inner tire member, the electronic component mounting member includes an electronic component storage portion that stores the electronic component, and a joining portion that includes a joining surface for mounting the electronic component mounting member to a surface of the tire inner member, The joint Measurement temperature: 0℃ Measured under the following conditions: initial strain: 10%, dynamic strain: ±1%, frequency: 10Hz, deformation mode: extension Complex modulus E * r (MPa), and the tire inner member Measurement temperature: 0℃ Measured under the following conditions: initial strain: 10%, dynamic strain: ±1%, frequency: 10Hz, deformation mode: extension Complex modulus E * i (MPa) satisfies the following (Equation 1), The tire inner member Measurement temperature: 0℃ Measured under the following conditions: initial strain: 10%, dynamic strain: ±2.5%, frequency: 10Hz, deformation mode: tension Loss tangent (0℃tanδ i ) is 0.55 or less. E * r / E * i <1 ···········(Formula 1)

[0009] The invention described in claim 3 is The loss tangent (0°C tanδ i 3. The tire according to claim 2, wherein the ratio of the axial length of the tire to the radial length of the tire is 0.35 or less.

[0010] The invention described in claim 4 is A tire in which an electronic component mounting member for incorporating an electronic component is attached to a surface of an inner tire member, the electronic component mounting member includes an electronic component storage portion that stores the electronic component, and a joining portion that includes a joining surface for mounting the electronic component mounting member to a surface of the tire inner member, The joint Measurement temperature: 0℃ Measured under the following conditions: initial strain: 10%, dynamic strain: ±1%, frequency: 10Hz, deformation mode: extension Complex modulus E * r (MPa), and the tire inner member Measurement temperature: 0℃ Measured under the following conditions: initial strain: 10%, dynamic strain: ±1%, frequency: 10Hz, deformation mode: extension Complex modulus E * i (MPa) satisfies the following (Equation 1), At least one carcass layer is provided radially inside the tread portion, A thickness d from the radially inner surface of the carcass layer located at the radially innermost position to the radially inner surface of the tire inner memberi (mm) is 0.6 mm or more. E * r / E * i <1 ···········(Formula 1)

[0011] The invention described in claim 5 is A tire in which an electronic component mounting member for incorporating an electronic component is attached to a surface of an inner tire member, the electronic component mounting member includes an electronic component storage portion that stores the electronic component, and a joining portion that includes a joining surface for mounting the electronic component mounting member to a surface of the tire inner member, The joint Measurement temperature: 0℃ Measured under the following conditions: initial strain: 10%, dynamic strain: ±1%, frequency: 10Hz, deformation mode: extension Complex modulus E * r (MPa), and the tire inner member Measurement temperature: 0℃ Measured under the following conditions: initial strain: 10%, dynamic strain: ±1%, frequency: 10Hz, deformation mode: extension Complex modulus E * i (MPa) satisfies the following (Equation 1), The glass transition temperature Tg of the joint r (°C) and the glass transition temperature Tg i (°C) satisfies the following (Formula 2): E * r / E * i <1 ·············(Formula 1) Tg i -Tg r <0 ············(Formula 2) The invention described in claim 6 is A tire in which an electronic component mounting member for incorporating an electronic component is attached to a surface of an inner tire member, the electronic component mounting member includes an electronic component storage portion that stores the electronic component, and a joining portion that includes a joining surface for mounting the electronic component mounting member to a surface of the tire inner member, The joint Measurement temperature: 0℃ Measured under the following conditions: initial strain: 10%, dynamic strain: ±1%, frequency: 10Hz, deformation mode: extension Complex modulus E * r (MPa), and the tire inner member Measurement temperature: 0℃ Measured under the following conditions: initial strain: 10%, dynamic strain: ±1%, frequency: 10Hz, deformation mode: extension Complex modulus E * i (MPa) satisfies the following (Equation 3), E * r The tire is characterized in that the compressive strength is 1 MPa or more and 40 MPa or less. E * r / E * i <0.95 (Equation 3)

[0012] Claim 7 The invention described in 2. The electronic component mounting member according to claim 1, wherein the electronic component storage portion of the electronic component mounting member is open on a side opposite to the joining surface. 6 13. The tire according to claim 12,

[0013] Claim 8 The invention described in 2. The electronic part mounting member according to claim 1, wherein the electronic part mounting member is mounted on a surface of an inner tire member that has been polished in advance. 7 13. The tire according to claim 12,

[0014] Claim 9 The invention described in 10. The electronic part mounting member according to claim 1, wherein the electronic part mounting member is attached to the surface of the tire inner member by using an adhesive. 8 13. The tire according to claim 12,

[0015] Claim 10 The invention described in Claims 1 to 5, characterized in that the center of the electronic component mounting member is located in two central regions closest to the tire equatorial plane out of four regions defined by lines extending parallel to the tire radial direction from a line that divides the tread width between both ground contact ends into four equal parts in a tire cross section. 9 13. The tire according to claim 12,

[0016] Claim 11 The invention described in Claims 1 to 5 are tires for passenger cars. 10 13. The tire according to claim 12, Effect of the Invention

[0017] According to the present invention, it is possible to provide a tire having excellent peeling resistance in which electronic components are unlikely to peel off from the tire surface even when a large impact is applied while the tire is running at high speed in a low-temperature environment. [Brief description of the drawings]

[0018] [Figure 1] 1 is a cross-sectional view showing a configuration of a tire according to an embodiment of the present invention. [Diagram 2] FIG. 2A is a diagram showing the shape of the surface of a tread of a tire according to another embodiment of the present invention, and FIG. 2B is a cross-sectional view showing the configuration of a tire according to another embodiment of the present invention. [Diagram 3] FIG. 1A is a perspective view of an electronic component mounting member according to an embodiment of the present invention, as viewed from the side opposite to a joining surface, and FIG. [Figure 4] 13 is a perspective view of an electronic component mounting member according to another embodiment of the present invention, as viewed from the side opposite to the joining surface. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] [1] Characteristics of the tire according to the present invention First, the features of the tire according to the present invention will be described.

[0020] 1. Overview The tire according to the present invention is a tire in which an electronic component mounting member for incorporating electronic components is attached to the surface of a tire inner member disposed in the tire cavity. The electronic component mounting member includes an electronic component storage section for storing the electronic components, and a joint having a joint surface for mounting the electronic component mounting member to the surface of the tire inner member. Furthermore, the complex modulus E of the joint at 0° C. * r (MPa), and the complex modulus E of the inner tire component at 0°C * i (MPa) satisfies the following (Equation 1). E * r / E * i <1 ···········(Formula 1)

[0021] By making the tire as described above, it is possible to provide a tire having excellent peeling resistance in which the electronic component mounting member is unlikely to peel off from the tire surface even when a large impact is applied while the tire is running at high speed in a low-temperature environment, as will be described later.

[0022] In the above description, E * r and E * i is a value measured using a viscoelasticity measuring device such as "IPLEXER (registered trademark)" manufactured by GABO Corporation under the conditions of measurement temperature: 0°C, initial strain: 10%, dynamic strain: ±1%, frequency: 10 Hz, and deformation mode: extension in accordance with the provisions of JIS K 6394.

[0023] 2. Mechanism of effect manifestation in the tire according to the present invention The mechanism by which the effects of the tire according to the present invention are exhibited is believed to be as follows.

[0024] Tires are made of rubber, but rubber usually tends to harden at low temperatures, making it difficult for the rubber to flexibly respond to tire deformations that occur during running. For this reason, when a tire receives a large impact, for example when going over a bump while running at high speed in a low-temperature environment, the impact is transmitted to the electronic component mounting member via the tire inner member, and there is a risk that the electronic component mounting member will peel off from the tire and become dislodged during running.

[0025] Therefore, in the present invention, the rigidity of the electronic component mounting member is set lower than the rigidity of the tire inner member. * r (MPa), and the complex modulus E of the inner tire component at 0°C * i (MPa) is E * r / E * i <1 (Equation 1). * r / E * i is more preferably less than 0.95, and even more preferably less than 0.9. * r / E * i The lower limit of is not limited, but is preferably, for example, 0.1 or more, more preferably 0.5 or more, and even more preferably 0.7 or more.

[0026] And the specific E * r For example, the pressure is preferably 1 MPa or more, more preferably 10 MPa or more, and even more preferably 20 MPa or more, while it is preferably 40 MPa or less, more preferably 35 MPa or less, and even more preferably 30 MPa or less.

[0027] And the specific E * iFor example, the pressure is preferably 1 MPa or more, more preferably 10 MPa or more, and even more preferably 20 MPa or more, while it is preferably 50 MPa or less, more preferably 45 MPa or less, and even more preferably 40 MPa or less.

[0028] In this way, the rigidity of the electronic component mounting member is made lower than the rigidity of the tire inner member, i.e., E * r / E * i <1 (Equation 1) is satisfied, even if a large impact is applied to the tire, the impact received by the tire inner member is absorbed and transmitted to the electronic component mounting member, which has low rigidity, and the electronic component mounting member deforms flexibly, sufficiently suppressing the occurrence of peeling off from the tire surface, and it is believed that excellent peeling resistance can be exhibited.

[0029] 3. Preferred embodiment of the tire according to the present invention Moreover, the tire according to the present invention preferably has the following features.

[0030] (1) Loss tangent of inner tire component As described above, the tire according to the present invention has E * r / E * i <1 (Equation 1) is satisfied, but in this case, the loss tangent at 0°C of the inner tire component (0°C tanδ i ) is preferably 0.55 or less, more preferably 0.45 or less, and even more preferably 0.35 or less. There is no lower limit, but for example, it is preferably 0.1 or more, more preferably 0.2 or more, and even more preferably 0.3 or more.

[0031] This is because it is believed that if the 0°C tan δ of the inner tire component is large, the inner tire component will tend to heat up and will be more likely to soften during high-speed driving, which will result in a larger amplitude of the electronic component mounting member and a decrease in the peeling resistance effect achieved by satisfying formula (1). It is believed that by controlling the 0°C tan δ of the inner tire component to a small value, in addition to the impact mitigation effect achieved by satisfying formula (1), the peeling resistance effect is improved synergistically. Note that this 0°C tan δ i is the above E * r Or E * i As in the measurement of (1), the measurement can be performed using a viscoelasticity measuring device such as "IPLEXER (registered trademark)" manufactured by GABO under the conditions of measurement temperature: 0°C, initial strain: 10%, dynamic strain: ±2.5%, frequency: 10 Hz, and deformation mode: tension.

[0032] (2) Thickness from the inner surface of the carcass layer to the inner surface of the tire inner component The tire according to the present invention has at least one carcass layer on the radially inner side of the tread portion, and a thickness d from the radially inner side surface of the carcass layer located at the radially innermost position to the radially inner side surface of the tire inner member i It is preferable that the thickness d (mm) is 0.6 mm or more. The carcass layer and the tire inner member can have various configurations, for example, there are two carcass layers, and there are cases where another rubber layer is disposed between the carcass layer and the tire inner member. For example, when another rubber layer is disposed between the carcass layer and the inner liner which is the tire inner member, the thickness d i is a size including the thickness of this rubber layer.

[0033] Thickness d i If the surface roughness is insufficient, the impact received by the outer surface of the tire will be transmitted to the electronic component mounting member without being adequately absorbed, which is thought to reduce the peeling resistance effect achieved by satisfying formula (1).

[0034] Thickness d iBy making the thickness d equal to or greater than 0.6 mm, the impact received by the outer surface of the tire can be sufficiently absorbed, and this, combined with the impact absorption effect achieved by satisfying (Formula 1), is thought to synergistically improve the peeling resistance effect. i is 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.

[0035] (3) Glass transition temperature of electronic component mounting parts and tire inner parts Rubber and plastics are thought to absorb shocks easily near the glass transition point (Tg) because their physical properties such as rigidity and viscosity change drastically at the glass transition point (Tg). r (℃) is the glass transition temperature Tg i It is considered preferable to set the Tg i -Tg r <0 (Equation 2) is preferably satisfied. This is believed to facilitate shock absorption by the joint in the high temperature region. i -Tg r is preferably less than -5°C, and more preferably less than -10°C. i -Tg r The lower limit is not limited, but is preferably, for example, −90° C. or higher.

[0036] And the specific Tg i For example, the Tg 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 0°C or lower, more preferably -10°C or lower, and even more preferably -20°C or lower. rSimilarly, for example, the temperature is preferably −100° C. or higher, more preferably −70° C. or higher, and even more preferably −50° C. or higher. On the other hand, the temperature is preferably 0° C. or lower, more preferably −10° C. or lower, and even more preferably −20° C. or lower.

[0037] [2] Specific embodiments Next, a specific embodiment of the present invention will be described. In the following, a rubber electronic component mounting member and an inner liner as an example of a tire inside member will be described, but as long as the above-mentioned (Formula 1) is satisfied, there are no particular limitations, and a plastic electronic component mounting member or a tire inside member other than an inner liner may be used.

[0038] 1. Tire composition Fig. 1 is a cross-sectional view showing the structure of a tire according to this embodiment. In Fig. 1, 1 is a tire, and 2 is an electronic component mounting member. Also, 11 is a tread, 12 is a belt, 13 is a sidewall, 14 is a carcass layer, 15 is a bead core, 16 is a bead apex, 17 is a chafer, 18 is a clinch, 19 is a tire inner member (inner liner), and 31 is a circumferential groove. Also, I is the inner cavity surface of the tire, and CL is a center line in the tire width direction.

[0039] As shown in FIG. 1, the electronic component mounting member 2 is first disposed on the inner cavity surface I of the tire, that is, on the surface of the inner liner 19. At this time, in order to obtain monitoring information with high accuracy and stability, it is preferable that the center of the electronic component mounting member is located in the two central regions closest to the tire equatorial plane among the four regions divided by lines extending parallel to the tire radial direction from a line dividing the tire width between both ground contact ends in the tire cross section. FIG. 1 shows an example in which the electronic component mounting member 2 is mounted on the tire width direction center of the tire inner cavity surface, that is, on the center line CL. Although not shown, electronic components are built into the electronic component mounting member 2. Here, since the amount of deformation is particularly large on the center line CL of the tire, it is preferable that the CL and the center of the electronic component mounting member are offset, and the offset width is preferably 1 to 50 mm in the tire axial direction.

[0040] FIG. 2 is a drawing of a tire according to another embodiment of the present invention, in which (A) is a diagram showing the shape of the surface of the tread, and (B) is a cross-sectional view showing the structure of the tire. In FIG. 2(A), VL is both ground contact ends forming the tread ground contact width and an imaginary line dividing both ground contact ends into four equal parts. In FIG. 2(B), cl is the center line of the electronic component mounting member 2, and m is the deviation width of the center of the electronic component mounting member from the center line CL of the tire. And, 34 and 35 are regions divided into four equal parts by the imaginary line VL, 34 is the region closest to the tire equatorial plane, and 35 is the region on the outer side in the tire axial direction. In FIG. 2(A), 32d is a lateral groove in the center, and 32a is a lateral groove having a decorative groove at the outer end in the tire axial direction. Also, 33 is a sipe.

[0041] In the tire of this embodiment, one circumferential groove 31 is formed on the center line CL of the tire on the surface 3 of the tread portion, i.e., on the equator, and one on each side of the circumferential groove 31. In a tire in which the circumferential groove 31 is formed on the equator in this manner, it is preferable to position the center of the electronic component mounting member in two central regions 34 closest to the tire equatorial plane among the four regions divided by both ground contact ends and imaginary lines VL extending parallel to the tire radial direction from a line dividing the both ground contact ends into four equal parts, specifically, from a position on the profile of the tire surface dividing the both ground contact ends into four equal parts, the four regions divided by the imaginary line VL extending perpendicular to the profile.

[0042] Here, "both contact ends forming the tread contact width" refers to the ends that form the maximum linear distance in the axial direction of the tire at the contact surface with a flat plate when the tire is mounted on a "standard rim", pressurized to "standard internal pressure", placed stationary in a vertical position on a flat plate, and then loaded with a "standard load". Specifically, for example, this can be identified by applying a "standard load" to a tire with ink applied to the surface of the tread, pressing it against cardboard, and transferring the information.

[0043] Furthermore, whether the electronic component mounting parts are located within the two central regions closest to the tire equatorial plane out of the four regions defined by dividing the area between the two contact ends into four equal parts can be confirmed by, for example, tracing the contact end positions onto a section cut out to a width of approximately 2 cm and dividing the tire into four equal parts along the surface profile.

[0044] In addition, the grooves formed on the surface of the tread can be determined from the tread profile, which is determined by the radius formed on the surface of the tread of a tire when it is mounted on a "standard rim," subjected to "standard internal pressure," and placed under no load. Specifically, it can be easily measured, for example, by fixing the bead portion of a section cut out to a width of about 2 cm in the radial direction of the tire to match the applicable rim width.

[0045] In addition, the term "genuine rim" refers to a rim that is specified for each tire by the standard system that includes the standard on which the tire is based, such as the standard rim for the applicable size listed in the "JATMA YEAR BOOK" for JATMA (Japan Automobile Tire Manufacturers Association), the "Measuring Rim" listed in the "STANDARDS MANUAL" for ETRTO (The European Tyre and Rim Technical Organisation), and the "Design Rim" listed in the "YEAR BOOK" for TRA (The Tire and Rim Association, Inc.). In the case of a tire not specified by a standard, it refers to a rim that can be assembled to a rim and can hold internal pressure, that is, a rim that does not leak air from between the rim and tire, and has the smallest rim diameter and the next narrowest rim width.

[0046] The "normal internal pressure" is the air pressure that the standard specifies for each tire. In the case of JATMA, it is the maximum air pressure. In the case of TRA, it is the maximum value listed in the table "TIRE LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES". In the case of ETRTO, it is the "INFLATION PRESSURE".

[0047] "Normal load" refers to the load specified for each tire by each of the above standards, and refers to the maximum mass that can be loaded onto the tire. In the case of JATMA, it is the maximum load capacity, in the case of TRA, it is the maximum value listed in the table "TIRE LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES", and in the case of ETRTO, it is the "LOAD CAPACITY".

[0048] Next, the electronic component mounting member 2 includes an electronic component storage section for storing electronic components, and a joining section having a joining surface for mounting the electronic component mounting member 2 to the surface of the inner liner 19.

[0049] Fig. 3(A) is a perspective view of electronic component mounting member 2 in this embodiment as viewed from the side opposite to the joining surface, Fig. 3(B) is a perspective view of electronic component mounting member 2 in this embodiment as viewed from the side opposite to the joining surface, and Fig. 4 is a perspective view of electronic component mounting member 2 in another embodiment as viewed from the side opposite to the joining surface.

[0050] 3 and 4, 21 is an electronic component storage section, and 22 is a joint section. A is a joint surface to be joined to the inner liner 19, E1 is an upper end portion of the electronic component storage section 21 on the side facing the joint surface, E2 is a lower end portion of the electronic component storage section on the joint surface side, and S is a storage space for electronic components. In Fig. 3(A), D is the diameter (outer diameter) of the joint surface, T is the thickness of the joint section, W is the width of the flange, and H is the thickness (height) of the electronic component mounting member.

[0051] 3 and 4, electronic component storage section 21 is formed in a cylindrical shape and has storage space S for electronic components inside. A flange-shaped joint 22 is formed at a lower end E2 of electronic component storage section 21, and joint surface A is formed on the lower surface of joint 22. By forming joint 22 in a flange shape, the size of joint surface A can be increased to ensure a sufficient adhesion area with the tire inner member, thereby increasing the bonding strength.

[0052] The cross-sectional shape, size and depth of the storage space S are appropriately determined according to the shape and size of the electronic components to be stored. The cross-sectional shape can be appropriately set to, for example, an ellipse, a polygon, or the like, in addition to the circle shown in the figure. It is preferable that the side wall of the tube is not perpendicular to the joint 22, but is formed in a truncated cone shape so 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.

[0053] The lower end E2 side of the electronic component storage section 21 is preferably formed with an opening, which allows, for example, a sensor to directly contact the tire inner member of the tire, thereby obtaining accurate information with higher sensitivity. On the other hand, the upper end E1 side is preferably open as shown in Fig. 3(A), which allows the electronic components to be detachably attached and easily replaced. Note that, as shown in Fig. 4, the upper end E1 side may be closed, in which case the electronic components can be stored sealed in the storage space S, providing a stable environment.

[0054] The diameter (outer diameter) D of the joining surface A is preferably 20 mm or more, more preferably 25 mm or more, and even more preferably 30 mm or more, while it is preferably 60 mm or less, more preferably 55 mm or less, and even more preferably 50 mm or less.

[0055] The thickness (height) H of the electronic component mounting member is preferably 10 mm or more, more preferably 15 mm or more, and even more preferably 20 mm or more, while it is preferably 40 mm or less, more preferably 35 mm or less, and even more preferably 30 mm or less.

[0056] 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, while it is preferably 1.4 mm or less, more preferably 1.3 mm or less, and even more preferably 1.2 mm or less.

[0057] 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, while it is preferably 16 mm or less, more preferably 14 mm or less, and even more preferably 12 mm or less.

[0058] The combined weight of the electronic component and the electronic component mounting member is preferably 50 g or less, more preferably 40 g or less, and even more preferably 30 g or less.

[0059] 2. Tire inner liner Next, an inner liner will be described as a specific example of a tire inner side member, but as described above, the tire inner side member is not limited to the inner liner.

[0060] (1) Rubber composition constituting the inner tire component (inner liner) In this embodiment, the tire inside member (inner liner) is formed, for example, by using a rubber composition (rubber composition for inner liner) in which the following respective compounding materials are compounded.

[0061] (a) Rubber component Examples of the rubber component of the rubber composition for the inner liner 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 rubber. The rubber components may be used alone or in combination of two or more. Among the above rubbers, it is preferable to contain butyl rubber as the main rubber component because it has excellent air barrier properties and heat resistance.

[0062] (a-1) Butyl rubber As the butyl-based rubber, those usually used in the tire industry can be suitably used, and specific examples thereof include ordinary butyl rubber (IIR), as well as halogenated butyl rubber (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 Co.). Among these, Br-IIR is preferably used because sulfur crosslinking easily proceeds even without containing natural rubber.

[0063] In addition, recycled butyl rubber can be used in combination with the butyl rubber. Recycled butyl rubber usually contains a high amount of non-halogenated butyl rubber (regular butyl rubber), so by using it in combination with halogenated butyl rubber, good air barrier properties and vulcanization speed can be ensured. In particular, when a mixture of fatty acid metal salt and fatty acid amide is added to a compound containing recycled butyl rubber, the performance balance between sheet processability and air barrier properties is remarkably improved in a synergistic manner, which is preferable.

[0064] Recycled butyl rubber is the butyl rubber content contained in crushed rubber products containing a large amount of butyl rubber, such as tire tubes and bladders used in tire manufacturing, or in products obtained by heating and pressurizing the crushed products, and includes rubber components that have had their cross-linking bonds broken (desulfurization treatment) to make them re-vulcanizable. Generally, about 50% by mass of the crushed products is recycled butyl rubber. Note that recycled butyl rubber also contains sulfur, but it is deactivated to the extent that it does not participate in cross-linking.

[0065] Commercially available recycled butyl rubber products include tube recycled rubber manufactured by Muraoka Rubber Co., Ltd., which is produced by heat-treating butyl tubes under pressurized conditions, and bladder recycled rubber manufactured by Carquest Co., Ltd., which is obtained by crushing bladders with an extruder. These recycled butyl rubbers may be used alone or in combination of two or more kinds.

[0066] The content of the butyl rubber in 100 parts by mass of the rubber component is preferably 70 parts by mass or more, more preferably 75 parts by mass or more, and even more preferably 80 parts by mass or more, because it has excellent air barrier properties. The upper limit is not particularly limited and may be 100 parts by mass, but from the viewpoint of sheet processability, it is preferably 95 parts by mass or less, and more preferably 90 parts by mass or less.

[0067] From the viewpoint of the merits of using recycled butyl rubber, the content of recycled butyl rubber in 100 parts by mass of the rubber component is preferably 5 parts by mass or more, and more preferably 8 parts by mass or more, and from the viewpoint of ensuring sufficient air barrier properties and vulcanization speed, the content is preferably 30 parts by mass or less, and more preferably 25 parts by mass or less.

[0068] In 100 parts by mass of the total butyl rubber, the content of the recycled butyl rubber is preferably 7 parts by mass or more, more preferably 10 parts by mass or more, and is preferably 35 parts by mass or less, more preferably 30 parts by mass or less.

[0069] (a-2) Isoprene rubber From the viewpoint of achieving a well-balanced improvement in sheet processability and air barrier properties, it is preferable that the rubber component contains an isoprene-based rubber as necessary.

[0070] Examples of isoprene-based rubber include isoprene rubber (IR), natural rubber (NR), and modified natural rubber. NR includes deproteinized natural rubber (DPNR) and highly purified natural rubber (UPNR), and examples of modified natural rubber include epoxidized natural rubber (ENR), hydrogenated natural rubber (HNR), and grafted natural rubber. As NR, for example, SIR20, RSS♯3, TSR20, and other commonly used NRs in the tire industry can be used. Among these, NR and IR are preferred because they can improve sheet processability and air barrier properties in a well-balanced manner.

[0071] The content of the isoprene-based rubber in 100 parts by mass of the rubber component is preferably 5 parts by mass or more, and more preferably 10 parts by mass or more, in consideration of the balance between sheet processability and air barrier properties, and is preferably 30 parts by mass or less, and more preferably 25 parts by mass or less.

[0072] (a-3) Other rubbers In addition to the butyl rubber and isoprene rubber, if necessary, rubbers generally used in the tire industry, such as diene rubbers such as 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), may be contained. These may be used alone or in combination of two or more.

[0073] (b) Compounding materials other than rubber components (b-1) Resin component The rubber composition for the inner liner preferably contains a resin component from the viewpoints of imparting tackiness, adjusting the glass transition temperature (Tg), and sheet processability. Specific resin components include, for example, aromatic hydrocarbon resins such as terpene resins and coumarone-indene resins, non-reactive alkylphenol resins, aliphatic hydrocarbon resins such as C5 resins and C9 resins, and two or more of them may be used in combination. Among them, a combination of an aromatic hydrocarbon resin and an aliphatic hydrocarbon resin is preferable. The content of the resin component relative to 100 parts by mass of the rubber content is, for example, preferably 2 parts by mass or more, more preferably 3 parts by mass or more. On the other hand, it is preferably 7 parts by mass or less, more preferably 5 parts by mass or less.

[0074] Terpene resins include polyterpene, terpene phenol, and aromatic modified terpene resins. Polyterpenes are resins obtained by polymerizing terpene compounds and their hydrogenated products. Terpene compounds are (C5H8) n The hydrocarbons and their oxygen-containing derivatives are represented by the following composition: Monoterpenes (C 10 H 16 ), sesquiterpenes (C 15 H 24 ), diterpenes (C 20 H 32), and examples thereof include α-pinene, β-pinene, dipentene, limonene, myrcene, alloocimene, ocimene, α-phellandrene, α-terpinene, γ-terpinene, terpinolene, 1,8-cineole, 1,4-cineole, α-terpineol, β-terpineol, and γ-terpineol.

[0075] Examples of polyterpenes include terpene resins such as α-pinene resin, β-pinene resin, limonene resin, dipentene resin, and β-pinene / limonene resin, which are made from the above-mentioned terpene compounds, as well as hydrogenated terpene resins obtained by hydrogenating the terpene resins. Examples of terpene phenols include resins obtained by copolymerizing the above-mentioned terpene compounds with phenolic compounds, and resins obtained by hydrogenating the above-mentioned resins, and specifically include resins obtained by condensing the above-mentioned terpene compounds, phenolic compounds, and formalin. Examples of phenolic compounds include, for example, phenol, bisphenol A, cresol, and xylenol. Examples of aromatic modified terpene resins include resins obtained by modifying terpene resins with aromatic compounds, and resins obtained by hydrogenating the above-mentioned resins. The aromatic compound is not particularly limited as long as it is a compound having an aromatic ring, and examples thereof include phenolic compounds such as phenol, alkylphenols, alkoxyphenols, and phenols containing an unsaturated hydrocarbon group; naphthol compounds such as naphthol, alkylnaphthols, alkoxynaphthols, and naphthols containing an unsaturated hydrocarbon group; styrene derivatives such as styrene, alkylstyrenes, alkoxystyrenes, and styrenes containing an unsaturated hydrocarbon group; coumarone, indene, and the like.

[0076] Coumarone-indene resin is a resin that contains coumarone and indene as monomer components that make up the resin skeleton (main chain). Other monomer components contained in the skeleton besides coumarone and indene include styrene, α-methylstyrene, methylindene, vinyltoluene, etc.

[0077] The hydroxyl value (OH value) of the coumarone-indene resin is, for example, more than 15 mgKOH / g and less than 150 mgKOH / g. The OH value is the amount of potassium hydroxide required to neutralize acetic acid bonded to hydroxyl groups when acetylating 1 g of the resin, expressed in milligrams, and is a value measured by potentiometric titration (JIS K 0070:1992).

[0078] The softening point of the coumarone-indene resin is, for example, more than 30° C. and less than 160° C. The softening point is the temperature at which the ball drops when the softening point specified in JIS K 6220-1:2001 is measured using a ring and ball softening point tester.

[0079] The non-reactive alkylphenol resin refers to a resin having an alkyl chain at the ortho- and para-positions (especially the para-position) of the hydroxyl group of the benzene ring in the chain, and making little contribution to the crosslinking reaction during vulcanization. Two or more types may be used in combination.

[0080] 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. As a C5 petroleum resin, dicyclopentadiene resin (DCPD resin) is preferably used.

[0081] The C9 resin refers to a resin obtained by polymerizing a C9 fraction, and may be a hydrogenated or modified resin. Examples of the C9 fraction include petroleum fractions having 8 to 10 carbon atoms, such as vinyltoluene, alkylstyrene, indene, and methylindene. Specific examples of suitable resins include coumarone-indene resins, coumarone resins, indene resins, and aromatic vinyl resins. As the aromatic vinyl resin, a homopolymer of α-methylstyrene or styrene or a copolymer of α-methylstyrene and styrene is preferred, and a copolymer of α-methylstyrene and styrene is more preferred, because they are economical, easy to process, and have excellent heat generation properties.

[0082] In addition, a C5C9 resin obtained by copolymerizing the C5 fraction and the C9 fraction can also be used, and may be a hydrogenated or modified one. Examples of the C5 fraction and the C9 fraction include the petroleum fractions described above.

[0083] (b-2) Softener From the viewpoint of sheet processability, the rubber composition for the inner liner preferably contains oil (including extending oil) or liquid rubber as a softener. The total content of these is preferably 2 parts by mass or more, more preferably 3 parts by mass or more, and even more preferably 4 parts by mass or more, per 100 parts by mass of the rubber component. Also, it is preferably 9 parts by mass or less, more preferably 7 parts by mass or less, and even more preferably 6 parts by mass or less. The oil content includes the amount of oil contained in the rubber (oil-extended rubber).

[0084] The oil is not particularly limited as long as it is an oil commonly used in the tire industry, and examples thereof include mineral oil (generally called process oil), vegetable oil, or a mixture thereof. Examples of mineral oil (process oil) that can be used include paraffin-based process oil, aromatic process oil, naphthene-based process oil, etc. Examples of vegetable oil 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 oil, safflower oil, sesame oil, olive oil, sunflower oil, palm kernel oil, camellia oil, jojoba oil, macadamia nut oil, tung oil, etc. These may be used alone or in combination of two or more.

[0085] When using a process oil, it is preferable to use one with a low aromatic content, which improves compatibility with butyl rubber, suppresses bleeding onto the rubber sheet surface, and prevents deterioration of molding adhesion.

[0086] Specific examples of process oils (mineral oils) that can be used include products from Idemitsu Kosan Co., Ltd., Sankyo Yuka Kogyo Co., Ltd., Japan Energy Co., Ltd., Orisoi Co., Ltd., H&R Co., Ltd., Toyokuni Oil Mills Co., Ltd., Showa Shell Sekiyu K.K., Fuji Kosan Co., Ltd., and the like.

[0087] The liquid rubbers mentioned as softeners are polymers that are in a liquid state at room temperature (25° C.) and contain the same monomers as solid rubbers. Examples of liquid rubbers include farnesene-based polymers, liquid diene-based polymers, and hydrogenated products thereof.

[0088] Farnesene polymers are polymers obtained by polymerizing farnesene and contain structural units based on farnesene. Farnesene has isomers such as α-farnesene ((3E,7E)-3,7,11-trimethyl-1,3,6,10-dodecatetraene) and β-farnesene (7,11-dimethyl-3-methylene-1,6,10-dodecatriene).

[0089] The farnesene-based polymer may be a homopolymer of farnesene (farnesene homopolymer) or a copolymer of farnesene and a vinyl monomer (farnesene-vinyl monomer copolymer).

[0090] 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).

[0091] The liquid diene polymer has a weight average molecular weight (Mw) of, for example, 1.0×10 3 Super, 2.0×10 5 In this specification, the Mw of the liquid diene polymer is a polystyrene-equivalent value measured by gel permeation chromatography (GPC).

[0092] The amount of the liquid rubber (total amount of the liquid farnesene polymer, the liquid diene polymer, etc.) is, for example, more than 1 part by mass and less than 100 parts by mass per 100 parts by mass of the rubber component.

[0093] As the liquid rubber, for example, products of Kuraray Co., Ltd., Cray Valley Co., Ltd., etc. can be used.

[0094] (b-3) Filler The rubber composition for the inner liner preferably contains a filler. Specific examples of the filler include carbon black, silica, calcium carbonate, talc, alumina, clay, aluminum hydroxide, and mica. Among these, carbon black is preferably used as a reinforcing agent, and silica may be used in combination.

[0095] (a) Carbon black The amount of carbon black per 100 parts by mass of the rubber component is, for example, preferably 10 parts by mass or more, more preferably 20 parts by mass or more, and even more preferably 30 parts by mass or more, while it is preferably 100 parts by mass or less, more preferably 90 parts by mass or less, and even more preferably 80 parts by mass or less.

[0096] The carbon black is not particularly limited, and examples thereof include furnace black (furnace carbon black) such as SAF, ISAF, HAF, MAF, FEF, SRF, GPF, APF, FF, CF, SCF and ECF; acetylene black (acetylene carbon black); thermal black (thermal carbon black) such as FT and MT; channel black (channel carbon black) such as EPC, MPC and CC; graphite, etc. These may be used alone or in combination of two or more.

[0097] From the viewpoint of sheet processability, the nitrogen adsorption specific surface area (N2SA) of carbon black is, for example, 10 m 2 / g or more, 70m 2 / g or less is preferable, and 20m 2 / g or more, 40m 2 / g or less is more preferable. The dibutyl phthalate (DBP) absorption of carbon black is, for example, more than 50 ml / 100 g and less than 250 ml / 100 g. 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.

[0098] Specific carbon black is not particularly limited, and examples thereof include N550, N660, and N762. Commercially available products include those available from Asahi Carbon Co., Ltd., Cabot Japan Co., Ltd., Tokai Carbon Co., Ltd., Mitsubishi Chemical Co., Ltd., Lion Co., Ltd., Shin-Nichika Carbon Co., Ltd., Columbia Carbon Co., Ltd., etc. These may be used alone or in combination of two or more kinds.

[0099] (b) Silica The rubber composition for the inner liner may further contain silica as required, and is usually used together with a silane coupling agent. However, when silica is used, the silica not covered with the silane coupling agent may re-aggregate during extrusion molding of the sheet, which may cause deterioration of sheet processability, so it is preferable not to use silica if possible.

[0100] When used, the BET surface area of ​​silica is 140 m 2 / g or more is preferable, and 160m 2 / g is more preferable. 2 / g or less is preferable, and 220m 2 / g or less. The content of the silica per 100 parts by mass of the rubber component is preferably 5 parts by mass or more, more preferably 15 parts by mass or more, and even more preferably 25 parts by mass or more. On the other hand, it is preferably 50 parts by mass or less, more preferably 40 parts by mass or less, and even more preferably 30 parts by mass or less. The BET specific surface area is a value of N2SA measured by the BET method according to ASTM D3037-93.

[0101] Examples of silica include dry process silica (anhydrous silica), wet process silica (hydrated silica), etc. Among these, wet process silica is preferred because it has a large number of silanol groups.

[0102] As the silica, for example, products manufactured by Degussa, Rhodia, Tosoh Silica Co., Ltd., Solvay Japan Co., Ltd., Tokuyama Corporation, etc. can be used.

[0103] The silane coupling agent is not particularly limited, and examples thereof include 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-triethoxysilylethyl)disulfide, bis(4-triethoxysilylbutyl)disulfide, bis(3-trimethoxysilylpropyl)disulfide, bis(2-trimethoxysilylethyl)disulfide, bis(4-trimethoxysilylbutyl)disulfide, bis(3-trimethoxysilylpropyl)disulfide, bis(2-trimethoxysilylethyl)disulfide, bis(4-trimethoxysilylbutyl)disulfide, 3-trimethoxysilylpropyl-N,N-dimethylthio Examples of the silyl silane include sulfide-based silanes such as octacarbamoyl tetrasulfide, 2-triethoxysilylethyl-N,N-dimethylthiocarbamoyl tetrasulfide, and 3-triethoxysilylpropyl methacrylate monosulfide; mercapto-based silanes such as 3-mercaptopropyl trimethoxysilane, 2-mercaptoethyl triethoxysilane, and NXT and NXT-Z manufactured by Momentive; vinyl-based silanes such as vinyl triethoxysilane and vinyl trimethoxysilane; amino-based silanes such as 3-aminopropyl triethoxysilane and 3-aminopropyl trimethoxysilane; glycidoxy-based silanes such as γ-glycidoxypropyl triethoxysilane and γ-glycidoxypropyl trimethoxysilane; nitro-based silanes such as 3-nitropropyl trimethoxysilane and 3-nitropropyl triethoxysilane; and chloro-based silanes such as 3-chloropropyl trimethoxysilane and 3-chloropropyl triethoxysilane. These may be used alone or in combination of two or more.

[0104] As the silane coupling agent, for example, products available from Degussa, Momentive, Shin-Etsu Silicones, Tokyo Chemical Industry, Azumax, Dow Corning Toray, etc. can be used.

[0105] The content of the silane coupling agent is, for example, more than 3 parts by mass and less than 25 parts by mass relative to 100 parts by mass of silica.

[0106] (C) Other fillers The rubber composition for the inner liner may further contain fillers commonly used in the tire industry, such as calcium carbonate, talc, alumina, clay, aluminum hydroxide, and mica, in addition to the above-mentioned carbon black and silica. Among them, flat aluminum hydroxide, which has excellent air barrier properties and sheet processability, is preferred. The content of these is, for example, more than 0.1 parts by mass and less than 200 parts by mass per 100 parts by mass of the rubber component.

[0107] (b-4) Processing aids The rubber composition for the inner liner preferably contains a mixture of a fatty acid metal salt and a fatty acid amide as a processing aid, which allows an appropriate balance between sheet processability and air barrier properties to be achieved.

[0108] The fatty acid constituting the fatty acid metal salt is not particularly limited, but may be a saturated or unsaturated fatty acid having preferably 6 to 28 carbon atoms, more preferably 10 to 25 carbon atoms, and even more preferably 14 to 20 carbon atoms, specifically, for example, lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, arachidic acid, behenic acid, nervonic acid, etc. These may be used alone or in combination of two or more. Among them, saturated fatty acids are preferred, and saturated fatty acids having 14 to 20 carbon atoms are more preferred.

[0109] Examples of metals constituting fatty acid metal salts include alkali metals such as potassium and sodium, alkaline earth metals such as magnesium, calcium and barium, zinc, nickel, molybdenum, etc. Of these, zinc and calcium are preferred.

[0110] The fatty acid amide may be either saturated or unsaturated. Examples of saturated fatty acid amides include N-(1-oxooctadecyl)sarcosine, stearic acid amide, and behenic acid amide. Examples of unsaturated fatty acid amides include oleic acid amide and erucic acid amide.

[0111] The content of the processing aid per 100 parts by mass of the rubber component is preferably 0.8 parts by mass or more, more preferably 1.0 parts by mass or more, and even more preferably 1.2 parts by mass or more, while it is preferably 3.2 parts by mass or less, more preferably 3.0 parts by mass or less, and even more preferably 2.8 parts by mass or less.

[0112] (b-5) Antiaging agents The rubber composition for the inner liner preferably contains an antioxidant. The content of the antioxidant is, for example, preferably 0.2 parts by mass or more, more preferably 0.7 parts by mass or more, relative to 100 parts by mass of the rubber component. On the other hand, it is preferably 5.0 parts by mass or less, more preferably 3.0 parts by mass or less, and even more preferably 2.0 parts by mass or less.

[0113] Examples of the antioxidant include naphthylamine-based antioxidants such as phenyl-α-naphthylamine; diphenylamine-based antioxidants such as octylated diphenylamine and 4,4'-bis(α,α'-dimethylbenzyl)diphenylamine; p-phenylenediamine-based antioxidants such as N-isopropyl-N'-phenyl-p-phenylenediamine, N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine and N,N'-di-2-naphthyl-p-phenylenediamine; and heavy 2,2,4-trimethyl-1,2-dihydroquinoline. quinoline-based antioxidants such as 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline, 6-anilino-2,2,4-trimethyl-1,2-dihydroquinoline, poly-2,2,4-trimethyl-1,2-dihydroquinoline; monophenol-based antioxidants such as 2,6-di-t-butyl-4-methylphenol, styrenated phenol; bis-, tris-, and polyphenol-based antioxidants such as tetrakis-[methylene-3-(3',5'-di-t-butyl-4'-hydroxyphenyl)propionate]methane. These may be used alone or in combination of two or more.

[0114] As the antioxidant, for example, products available from Seiko Chemical Co., Ltd., Sumitomo Chemical Co., Ltd., Ouchi Shinko Chemical Industry Co., Ltd., Flexis, etc. can be used.

[0115] (b-6) Stearic acid The rubber composition for the inner liner may contain stearic acid. The content of stearic acid is, for example, more than 0.5 parts by mass and less than 10.0 parts by mass with respect to 100 parts by mass of the rubber component. As the stearic acid, a conventionally known product can be used, for example, a product of NOF Corporation, NOF Corporation, Kao Corporation, FUJIFILM Wako Pure Chemical Industries, Ltd., Chiba Fatty Acid Co., Ltd., etc. can be used.

[0116] (b-7) Zinc oxide The rubber composition for the inner liner may contain zinc oxide. The content of zinc oxide is, for example, more than 0.5 parts by mass and less than 10 parts by mass with respect to 100 parts by mass of the rubber component. As the zinc oxide, a conventionally known product can be used, for example, a product of Mitsui Mining & Smelting Co., Ltd., Toho Zinc Co., Ltd., Hakusui Tech Co., Ltd., Seido Chemical Industry Co., Ltd., Sakai Chemical Industry Co., Ltd., etc. can be used.

[0117] (b-8) Crosslinking agents and vulcanization accelerators The rubber composition for an inner liner preferably contains a crosslinking agent such as sulfur, etc. The content of the crosslinking agent is, for example, more than 0.1 parts by mass and less than 10.0 parts by mass per 100 parts by mass of the rubber component.

[0118] As the sulfur, powdered sulfur, precipitated sulfur, colloidal sulfur, insoluble sulfur, highly dispersible sulfur, soluble sulfur, etc., which are generally used in the rubber industry, can be used. These may be used alone or in combination of two or more kinds.

[0119] As sulfur, for example, products from Tsurumi Chemical Industry Co., Ltd., Karuizawa Sulfur Co., Ltd., Shikoku Chemical Industry Co., Ltd., Flexis Corporation, Nippon Kanritsu Kogyo Co., Ltd., Hosoi Chemical Industry Co., Ltd., etc. can be used.

[0120] Examples of crosslinking agents other than sulfur include vulcanizing agents containing sulfur atoms, such as TACKIROL V200 manufactured by Taoka Chemical Co., Ltd., DURALINK HTS (sodium 1,6-hexamethylenedithiosulfate dihydrate) manufactured by Flexsys, and KA9188 (1,6-bis(N,N'-dibenzylthiocarbamoyldithio)hexane) manufactured by LANXESS, as well as organic peroxides such as dicumyl peroxide.

[0121] The rubber composition for an inner liner preferably contains a vulcanization accelerator. The content of the vulcanization accelerator is, for example, more than 0.3 parts by mass and less than 10.0 parts by mass per 100 parts by mass of the rubber component.

[0122] Examples of the vulcanization accelerator include thiazole-based vulcanization accelerators such as 2-mercaptobenzothiazole, di-2-benzothiazolyl disulfide, and N-cyclohexyl-2-benzothiazyl sulfenamide; thiuram-based vulcanization accelerators such as tetramethylthiuram disulfide (TMTD), tetrabenzylthiuram disulfide (TBzTD), and tetrakis(2-ethylhexyl)thiuram disulfide (TOT-N); sulfenamide-based vulcanization accelerators such as N-cyclohexyl-2-benzothiazole sulfenamide, Nt-butyl-2-benzothiazolyl sulfenamide, N-oxyethylene-2-benzothiazole sulfenamide, N-oxyethylene-2-benzothiazole sulfenamide, and N,N'-diisopropyl-2-benzothiazole sulfenamide; and guanidine-based vulcanization accelerators such as diphenyl guanidine, di-orthotolyl guanidine, and orthotolyl biguanidine. These may be used alone or in combination of two or more kinds.

[0123] (2) Manufacturing the inner tire component (inner liner) The rubber composition for the inner liner is prepared by a general method, for example, a manufacturing method including a base kneading step of kneading a rubber component with a filler such as carbon black, and a finish kneading step of kneading the kneaded product obtained in the base kneading step with a crosslinking agent.

[0124] The kneading can be carried out using a known (internal) kneading machine such as a Banbury mixer, a kneader, or an open roll.

[0125] The kneading temperature in the base kneading step is, for example, more than 50° C. and less than 200° C., and the kneading time is, for example, more than 30 seconds and less than 30 minutes. In the base kneading step, in addition to the above-mentioned components, compounding agents conventionally used in the rubber industry, for example, softeners such as oil, stearic acid, antioxidants, waxes, vulcanization accelerators, etc. may be appropriately added and kneaded as necessary.

[0126] In the final kneading step, the kneaded product obtained in the base kneading step is kneaded with a crosslinking agent. The kneading temperature in the final kneading step is, for example, higher than room temperature and lower than 80° C., and the kneading time is, for example, longer than 1 minute and shorter than 15 minutes. In the final kneading step, in addition to the above components, a vulcanization accelerator, zinc oxide, etc. may be appropriately added and kneaded as necessary.

[0127] At this time, for example, by adjusting the amount of filler such as carbon black, or the amount of oil or resin components, the E * and tan δ can be adjusted to satisfy the above-mentioned conditions. In addition, for example, by adjusting the type and amount of the resin component, the glass transition temperature (Tg i ) can be adjusted. For example, by increasing the filler, E * In addition, for example, Tg can be increased by compounding a resin having a higher Tg than the rubber component.

[0128] The obtained rubber composition for an inner liner is then molded into a predetermined shape to produce an inner liner.

[0129] 3. Electronic component mounting materials Next, a rubber electronic component mounting member will be described as a specific example of the electronic component mounting member, but as described above, the electronic component mounting member is not limited to rubber.

[0130] (1) Rubber composition constituting an electronic component mounting member The rubber composition constituting the electronic component mounting member (rubber composition for electronic component mounting member) can be formed using the same compounding materials as in the case of the rubber composition for the inner liner. However, a rubber component different from that of the rubber composition for the inner liner may be used as the main rubber component, for example, BR having a low Tg and excellent low temperature properties, and NBR having excellent mechanical properties. In addition, other diene rubbers such as isoprene-based rubbers, SBR, SIBR, and CR may also be used as appropriate.

[0131] When BR and NBR are used as the rubber component, the content of BR in 100 parts by mass of the rubber component is, for example, 40 to 60 parts by mass, and the content of NBR is, for example, 40 to 60 parts by mass.

[0132] Here, the weight average molecular weight of the BR is, for example, more than 100,000 and less than 2,000,000. The vinyl bond amount of the BR is, for example, more than 1 mass% and less than 30 mass%. The cis content of the BR is, for example, more than 1 mass% and 98 mass% or less. The trans content of the BR is, for example, more than 1 mass% and less than 60 mass%. The cis content can be measured by infrared absorption spectroscopy.

[0133] The BR is not particularly limited, and can be BR with a high cis content (cis content of 90% or more), BR with a low cis content, BR containing syndiotactic polybutadiene crystals, etc. The BR can be either unmodified BR or modified BR, and the modified BR can be, for example, BR modified with a compound (modifier) ​​represented by the following formula:

[0134] [ka]

[0135] In the formula, R 1 , R 2 and R 3 R may be the same or different and represents an alkyl group, an alkoxy group, a silyloxy group, an acetal group, a carboxyl group (-COOH), a mercapto group (-SH), or a derivative thereof. 4 and R 5 R may be the same or different and represents a hydrogen atom or an alkyl group. 4 and R 5 may be bonded to form a ring structure together with the nitrogen atom, and n represents an integer.

[0136] The modified BR modified with a compound (modifying agent) represented by the above formula includes BR whose polymerization terminal (active terminal) has been modified with a compound represented by the above formula.

[0137] R 1 , R 2 and R 3 R is preferably an alkoxy group (preferably an alkoxy group having 1 to 8 carbon atoms, more preferably an alkoxy group having 1 to 4 carbon atoms). 4 and R 5 is preferably an alkyl group (preferably an alkyl group having 1 to 3 carbon atoms). n is preferably 1 to 5, more preferably 2 to 4, and further preferably 3. In addition, R 4 and R 5 When the nitrogen atom and the nitrogen atom are bonded to each other to form a ring structure, the ring is preferably a 4- to 8-membered ring. The alkoxy group also includes a cycloalkoxy group (such as a cyclohexyloxy group) and an aryloxy group (such as a phenoxy group and a benzyloxy group).

[0138] Specific examples of the modifying agent include 2-dimethylaminoethyltrimethoxysilane, 3-dimethylaminopropyltrimethoxysilane, 2-dimethylaminoethyltriethoxysilane, 3-dimethylaminopropyltriethoxysilane, 2-diethylaminoethyltrimethoxysilane, 3-diethylaminopropyltrimethoxysilane, 2-diethylaminoethyltriethoxysilane, 3-diethylaminopropyltriethoxysilane, etc. These may be used alone or in combination of two or more.

[0139] The modified BR may be modified with the following compounds (modifiers): polyglycidyl ethers of polyhydric alcohols such as ethylene glycol diglycidyl ether, glycerin triglycidyl ether, trimethylolethane triglycidyl ether, and trimethylolpropane triglycidyl ether; polyglycidyl ethers of aromatic compounds having two or more phenol groups such as diglycidylated bisphenol A; polyepoxy compounds such as 1,4-diglycidylbenzene, 1,3,5-triglycidylbenzene, and polyepoxidized liquid polybutadiene; epoxy group-containing tertiary amines such as 4,4'-diglycidyl-diphenylmethylamine and 4,4'-diglycidyl-dibenzylmethylamine; diglycidylaniline, N,N'-diglycidyl-4-glycidyloxyaniline, Diglycidyl amino compounds such as diglycidyl orthotoluidine, tetraglycidyl meta-xylylenediamine, tetraglycidyl aminodiphenylmethane, tetraglycidyl-p-phenylenediamine, diglycidyl aminomethylcyclohexane, and tetraglycidyl-1,3-bisaminomethylcyclohexane; amino group-containing acid chlorides such as bis-(1-methylpropyl)carbamic acid chloride, 4-morpholinecarbonyl chloride, 1-pyrrolidinecarbonyl chloride, N,N-dimethylcarbamic acid chloride, and N,N-diethylcarbamic acid chloride; epoxy group-containing silane compounds such as 1,3-bis-(glycidyloxypropyl)-tetramethyldisiloxane and (3-glycidyloxypropyl)-pentamethyldisiloxane;(Trimethylsilyl)[3-(trimethoxysilyl)propyl]sulfide, (trimethylsilyl)[3-(triethoxysilyl)propyl]sulfide, (trimethylsilyl)[3-(trippropoxysilyl)propyl]sulfide, (trimethylsilyl)[3-(tributoxysilyl)propyl]sulfide, (trimethylsilyl)[3-(methyldimethoxysilyl)propyl]sulfide, (trimethylsilyl)[3-(methyldiethoxysilyl)propyl]sulfide, (trimethylsilyl)[3-(methyldipropoxy sulfide group-containing silane compounds such as (trimethylsilyl)[3-(methyldibutoxysilyl)propyl]sulfide and (trimethylsilyl)[3-(methyldibutoxysilyl)propyl]sulfide; N-substituted aziridine compounds such as ethyleneimine and propyleneimine; methyltriethoxysilane, N,N-bis(trimethylsilyl)-3-aminopropyltrimethoxysilane, N,N-bis(trimethylsilyl)-3-aminopropyltriethoxysilane, N,N-bis(trimethylsilyl)aminoethyltrimethoxysilane, N,N-bis(trimethylsilyl)aminoethyltrimethoxysilane, Alkoxysilanes such as thyltriethoxysilane; (thio)benzophenone compounds having amino groups and / or substituted amino groups, such as 4-N,N-dimethylaminobenzophenone, 4-N,N-di-t-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; Benzaldehyde compounds having an amino group and / or a substituted amino group, such as dimethylaminobenzaldehyde, 4-N,N-diphenylaminobenzaldehyde, 4-N,N-divinylaminobenzaldehyde, etc.; N-substituted pyrrolidones, such as N-methyl-2-pyrrolidone, N-vinyl-2-pyrrolidone, N-phenyl-2-pyrrolidone, Nt-butyl-2-pyrrolidone, N-methyl-5-methyl-2-pyrrolidone, etc.; N-substituted piperidones, such as N-methyl-2-piperidone, N-vinyl-2-piperidone, N-phenyl-2-piperidone, etc.;N-substituted lactams such as N-methyl-ε-caprolactam, N-phenyl-ε-caprolactam, N-methyl-ω-laurylolactam, N-vinyl-ω-laurylolactam, N-methyl-β-propiolactam, and N-phenyl-β-propiolactam; as well as N,N-bis-(2,3-epoxypropoxy)-aniline, 4,4-methylene-bis-(N,N-glycidylaniline), and tris-(2,3-epoxypropyl)-1,3,5-triazine-2,4,6-trione. , N,N-diethylacetamide, N-methylmaleimide, N,N-diethylurea, 1,3-dimethylethyleneurea, 1,3-divinylethyleneurea, 1,3-diethyl-2-imidazolidinone, 1-methyl-3-ethyl-2-imidazolidinone, 4-N,N-dimethylaminoacetophene, 4-N,N-diethylaminoacetophenone, 1,3-bis(diphenylamino)-2-propanone, 1,7-bis(methylethylamino)-4-heptanone, etc. The modification with the above-mentioned compound (modifying agent) can be carried out by a known method. These modified BRs may be used alone or in combination of two or more kinds.;

[0140] As the BR, for example, products from Ube Industries, Ltd., JSR Corporation, Asahi Kasei Corporation, Zeon Corporation, etc. can be used.

[0141] The NBR is not particularly limited, and NBR having a corresponding bound acrylonitrile content can be used depending on the required properties.

[0142] (2) Preparation of rubber composition for electronic component mounting members The rubber composition for electronic component mounting members can be obtained in the same manner as in the preparation of the tire inner member (inner liner) described above. In this case, the E at 0° C. can be adjusted by adjusting the blending amount of filler such as carbon black and the blending amount of oil and resin components in the same manner as in the preparation of the tire inner member (inner liner) so as to satisfy the above-mentioned conditions. * The glass transition temperature (Tg r ) can be adjusted.

[0143] (3) Manufacturing of mounting parts for electronic components Next, the obtained rubber composition for electronic component mounting members is heated and pressurized in a vulcanizer to a predetermined shape to produce an electronic component mounting member. The vulcanization step can be carried out by applying a known vulcanization method. The vulcanization temperature is, for example, more than 120°C and less than 200°C, and the vulcanization time is, for example, more than 5 minutes and less than 15 minutes. The housing part and the joint part of the electronic component mounting member may be made of different materials, but it is preferable that they are integrally molded from the same material.

[0144] 4. Tire manufacturing (1) Manufacturing of tires before installing electronic parts In the present invention, the tire before the electronic component mounting member is attached can be manufactured by a normal method. That is, the inner liner (tire inner component) manufactured as described above is molded together with other tire components in a tire building machine by a normal method to manufacture an unvulcanized tire.

[0145] Specifically, on a forming drum, an inner liner is prepared as a member for ensuring airtightness of the tire, a carcass as a member for enduring the load, impact, and filling air pressure received by the tire, and a bead portion is arranged as a member for fixing both ends of the carcass to both side edges and fixing the tire to the rim, and the carcass portion is folded back to envelop the bead portion. Next, a bead reinforcing layer as a member for protecting the bead portion and the carcass and for enduring bending, a clinch portion, and a sidewall are bonded to the outside of the bead portion in the tire width direction, and then these are molded into a toroidal shape. After that, a belt or the like as a member for tightening the carcass and increasing the rigidity of the tread is wound around the center of the outer circumference, and a tread is further arranged on the outer circumference to produce an unvulcanized tire.

[0146] The unvulcanized tire thus produced is then heated and pressurized in a vulcanizer to obtain a tire without an electronic component mounting member. The vulcanization step can be carried out by applying a known vulcanization method. The vulcanization temperature is, for example, more than 120°C and less than 200°C, and the vulcanization time is, for example, more than 5 minutes and less than 15 minutes.

[0147] (2) Installation of electronic component mounting parts Next, a separately manufactured electronic component mounting member is attached to the center of the tire width direction of the inner member of the manufactured tire using a predetermined adhesive, completing the manufacture of the tire according to this embodiment. Note that after manufacture, electronic components are stored in the electronic component mounting member. Also, instead of attaching the electronic component mounting member to the vulcanized tire with an adhesive in this manner, the unvulcanized tire and the electronic component mounting member may be vulcanized at the same time. However, since it becomes difficult to replace the electronic component mounting member, it is preferable to attach the electronic component mounting member to the vulcanized tire with an adhesive.

[0148] Since a release agent is generally applied to the surface of the tire inner member (cavity) in order to maintain releasability during vulcanization, it is preferable to attach the electronic component mounting member with an adhesive after removing the release agent. The following two methods can be considered for removing the release agent.

[0149] The first method is to scrape off the release agent using a polishing machine such as a buffing machine (buffing). By using a polishing machine, large irregularities can be eliminated and the surface can be roughened to ensure a sufficient contact area for adhesion.

[0150] The second method is to use a laser or the like to remove the release agent (laser polishing). This method is thought to provide superior peel resistance because it allows for more precise polishing than using a polishing machine and also makes it possible to smooth the contact surface with the electronic component mounting member.

[0151] The laser polishing method can be distinguished from other polishing methods by confirming that the step on the tire inner surface at the interface between the polished and unpolished areas is 200 μm or less. The unpolished areas also include the release agent layer during vulcanization.

[0152] As another method, when a release agent is applied to the inner cavity surface of an unvulcanized tire, the release agent may not be applied only to the area where the electronic component mounting member is to be attached, and the electronic component mounting member may be attached to that area after vulcanization.

[0153] The adhesive used can be appropriately selected from commercially available rubber-based adhesives that are typically used to bond rubber components, such as acrylic rubber-based, chloroprene rubber-based, styrene-butadiene rubber-based, and butyl rubber-based adhesives. It is preferable to use a rubber-based adhesive that can maintain its softness even after curing.

[0154] 5.Applications The tire of the present invention described above may be a pneumatic tire or a non-pneumatic tire. It can be used for various purposes such as passenger car tires, large vehicle tires, two-wheeled vehicle tires, agricultural tires, mining tires, and aircraft tires, but it is most preferable to use it as a pneumatic passenger car tire. The passenger car tire referred to here is a tire that is mounted on a four-wheeled vehicle and has a maximum load capacity of 1000 kg or less.

[0155] The maximum load capacity is not particularly limited as long as it is 1000 kg or less, but since generally, as the maximum load capacity increases, the tire weight tends to increase and the impact transmitted to the tire tends to become greater, it is preferably 900 kg or less, more preferably 800 kg or less, and even more preferably 700 kg or less.

[0156] From the viewpoint of reducing the impact transmitted to the tire, the tire weight is preferably 20 kg or less, more preferably 15 kg or less, further preferably 12 kg or less, 10 kg or less, or 8 kg or less. The tire weight mentioned here includes the weight of the electronic components and electronic component mounting members described above, and if a sealant, sponge, or the like is provided in the inner cavity, the tire weight includes these. EXAMPLES

[0157] The present invention will now be described in more detail with reference to examples.

[0158] In the following examples, a tire (size: 195 / 65R15) having the configuration shown in FIG. 1 was manufactured, and the peel resistance of an electronic component mounting member from the tire inner member (inner liner) was evaluated.

[0159] 1. Manufacturing of inner liners (1) Production of rubber composition for inner liner First, a rubber composition for an inner liner was produced.

[0160] (a) Compound materials First, the following blended materials were prepared.

[0161] (a-1) Rubber component Butyl rubber: Chlorobutyl HT1066 (chlorinated butyl rubber) manufactured by Exxon Chemical

[0162] (a-2) Compounding materials other than rubber components (a) Carbon black: Show Black N660 manufactured by Cabot Japan Co., Ltd. (N2SA:35m 2 / g) (b) Oil: Process X-260 manufactured by Japan Energy Co., Ltd. (c) Resin component-1: Marukarez T-100AS manufactured by Maruzen Petrochemical Co., Ltd. (C5 petroleum resin) (d) Resin component-2: Petrotac 100V manufactured by Tosoh Corporation (C5 petroleum resin) (e) Processing aid: WB16 manufactured by Struktol (Fatty acid metal salts (calcium saturated fatty acids with carbon numbers 14 to 20) Mixture with fatty acid amides (F) Stearic acid: Tsubaki manufactured by NOF Corporation (G) Zinc oxide: Zinc oxide type 2 manufactured by Mitsui Mining & Smelting Co., Ltd. (H) Sulfur: HK-200-5 (containing 5% oil by mass) manufactured by Hosoi Chemical Co., Ltd. (i) Vulcanization accelerator: Noccela DM manufactured by Ouchi Shinko Chemical Industry Co., Ltd. (Di-2-benzothiazolyl disulfide)

[0163] (b) Production of rubber composition for inner liner According to the composition shown in Table 1, the materials other than zinc oxide, sulfur, and the vulcanization accelerator were kneaded for 5 minutes at 150°C using a Banbury mixer to obtain a kneaded product. The amounts of each compound are in parts by mass. For convenience, Table 1 also shows the E * i , tan δ i , Tg i are also listed.

[0164] [Table 1]

[0165] Next, zinc oxide, sulfur and a vulcanization accelerator were added to the obtained kneaded mixture, and the mixture was kneaded for 5 minutes at 80° C. using an open roll to obtain a rubber composition for an inner liner.

[0166] 2. Manufacturing of electronic component mounting parts Separately, an electronic component mounting member was manufactured.

[0167] Specifically, except that BR (UBEPOL BR130B manufactured by Ube Industries, Ltd.) and NBR (Nipol DN401LL manufactured by Zeon Corporation) were used as the rubber components, the same compounding materials as those used in the rubber composition for inner liners were used, and the rubber compositions for electronic component mounting members were obtained by kneading in the same manner according to the compounding details shown in Table 2. For convenience, Table 2 shows the E measured later. * r , Tg r are also listed.

[0168] [Table 2]

[0169] Next, the obtained rubber composition for electronic component mounting members was vulcanized and molded into the shape shown in FIG. 3, i.e., a storage space S having a circular cross section, a diameter (outer diameter) D of the joining surface A of 40 mm, a thickness (height) H of 25 mm, a thickness T of the joining portion of 1 mm, and a flange width W of 10 mm, to produce an electronic component mounting member.

[0170] 3. Manufacturing of test tires (1) Manufacturing of tires before installing electronic parts First, a tire was manufactured before the electronic component mounting members were attached.

[0171] Specifically, the rubber compositions of the respective formulations shown in Tables 3 to 5 were molded to obtain inner liners of the respective thicknesses shown in Tables 3 to 5, which were then laminated together with other tire components to form unvulcanized tires, which were then press-vulcanized for 10 minutes under a condition of 170°C to obtain tires before electronic component mounting members were attached. Note that, since the inner liner was directly attached to the surface of the carcass layer, the thickness d from the surface of the carcass layer to the surface of the tire inner cavity side of the tire inner component was 1.0 mm. i is the same as the thickness of the inner liner

[0172] (2) Manufacturing of test tires Next, on the inner surface of the tire before mounting each electronic component mounting member, the mounting locations of the electronic component mounting members shown in Tables 3 to 5 were polished by the polishing methods shown in Tables 3 to 5 to remove the release agent, and then the electronic component mounting members in which predetermined electronic components were stored in the storage spaces were attached using an adhesive to produce each of the test tires of Examples 1 to 6 and Comparative Examples 1 to 5. The deviation width m of the center of the electronic component mounting member from the center line CL was set to 2 mm. A commercially available chloroprene rubber adhesive was used as the adhesive.

[0173] The laser polishing was performed by using a laser beam adjusted to a moving pitch of 60 μm and a moving speed of 4000 mm / s to move back and forth several times over the mounting location of the electronic component mounting member, thereby scraping off the release agent and rubber surface to leave a step of 95 μm.

[0174] 4. Calculating parameters Then, from each of the test tires, a rubber test piece for viscoelasticity measurement, 20 mm long x 4 mm wide x 1 mm thick, was cut out from the inner liner layer on the inside of the tread portion so that the long side was in the tire circumferential direction. For each rubber test piece, the complex modulus E in the extension deformation mode was measured using a GABO Iplexer series under the following conditions: measurement temperature: 0°C, initial strain: 10%, dynamic strain: ±1%, frequency: 10Hz. * i The loss tangent (0°C tan δ) was measured under the conditions of (MPa), measurement temperature: 0°C, initial strain: 10%, dynamic strain: ±2.5%, frequency: 10 Hz, and deformation mode: tension.

[0175] In addition, the complex elastic modulus E of the electronic component mounting material * r The viscoelasticity (MPa) was measured in the same manner as above by taking a viscoelasticity test piece of 20 mm length × 4 mm width × 1 mm thickness from the joint. In addition, the Tg (°C) of each rubber composition of Compounds 1 to 13, i.e., Tg i (℃) and Tg r (°C) was calculated by the following method.

[0176] Using an Iplexer series manufactured by GABO, the temperature distribution curve of tan δ was measured under the conditions of a frequency of 10 Hz, an initial strain of 10%, an amplitude of ±0.5%, and a heating rate of 2°C / min. The tan δ peak temperature corresponding to the largest tan δ value in the measured temperature distribution curve was determined as the glass transition point (Tg).

[0177] The results of each measurement are shown in Tables 1 and 2.

[0178] Next, based on the above measurement results, the E * r / E * i , Tg i -Tg r The results are shown in Tables 3 to 5. The complex elastic modulus, loss tangent, and Tg (°C) were measured for each test tire produced, and the average values ​​were calculated for those using the same rubber composition.

[0179] 5.Evaluation Test The evaluation was carried out with respect to peeling resistance during actual high speed running.

[0180] (1) Test method Each test tire was fitted to all wheels of a vehicle (a domestically produced FF vehicle with an engine displacement of 2000cc) and filled with air so that the internal pressure was 230kPa. The vehicle was then overloaded and driven on a test course with a dry surface at a speed of 80km / h, running over protrusions on the road surface. After the run, it was observed whether the electronic component mounting parts had peeled off from the inner surface of the tire.

[0181] If the peeling did not occur, the running speed was increased by 5 km / h and the same observation was repeated. The same observation was then repeated until the running speed reached a maximum of 140 km / h, and the speed at which the peeling occurred was recorded.

[0182] Next, the result of Comparative Example 5 was set as 100, and the peel resistance during actual high-speed running was relatively evaluated by indexing it according to the following formula. A larger value indicates that the peel resistance during actual high-speed running is more excellent and peeling is more difficult to occur. Actual peeling resistance during high speed driving = [(Test tire results) / (Comparative Example 5 results)] x 100

[0183] (2) Evaluation results The evaluation results are shown in Tables 3 to 5. In addition, Tables 3 to 5 show the E * i , E * r , 0℃ tan δ i , Tg i , Tg r is reposted below.

[0184] [Table 3]

[0185] [Table 4]

[0186] [Table 5]

[0187] Comparing Tables 3 and 4, E * r / E * i It is seen that when the ratio is <1 (Examples 1 to 6), a tire exhibiting excellent peeling resistance during actual high-speed running can be provided.

[0188] In addition, from a comparison of Examples 1 to 11, 0°C tan δ i It can be seen that when is 0.55 or less, the peeling performance during actual high-speed running is improved, and when is 0.35 or less, it is improved even more.

[0189] In addition, from a comparison of Examples 3 to 11, Tg i -Tg r <0, peel resistance during actual high speed running is further improved.

[0190] In addition, from Examples 7 to 11, the inner liner thickness d i Increase it to 1mm and E * r / E * i <0.95, Tg i -Tg r It is understood that by setting the value to <-2.0, it is possible to provide a tire that is stable and excellent in peeling performance during actual high-speed running.

[0191] Although the present invention has been described above based on the embodiment, the present invention is not limited to the above embodiment. Various modifications can be made to the above embodiment within the same and equivalent scope of the present invention. [Explanation of symbols]

[0192] 1 Tire 2 Electronic component mounting materials 3. Tread surface 11 Tread 12 Belt 13 Sidewall 14 Carcass layer 15 Bead core 16 Bead Apex 17 Chafer 18 Clinch 19 Tire inner liner 21 Electronic component storage section 22 Joint 31 Circumferential groove 32a, 32d Yokomizo 33 Sipe 34 Area closest to the equator 35 Axial outer area of ​​the tire dt tread thickness dr Thickness of electronic component mounting material A Joint surface CL Tire centerline cl Center line of electronic component mounting part D Diameter of joint surface (outer diameter) E1 (top end of the electronic component storage area) E2 (bottom end of electronic component storage area) H Thickness (height) of electronic component mounting member I Tire inner surface m Displacement of the center of the electronic component mounting part from the center line CL S Storage space T-junction thickness VL Virtual Line W flange width

Claims

1. A tire in which an electronic component mounting member for incorporating an electronic component is attached to a surface of an inner tire member, the electronic component mounting member includes an electronic component storage portion that stores the electronic component, and a joining portion that includes a joining surface for mounting the electronic component mounting member to a surface of the tire inner member, The complex elastic modulus E measured under the conditions of the measurement temperature of the joint: 0° C., initial strain: 10%, dynamic strain: ±1%, frequency: 10 Hz, deformation mode: elongation ＊ ｒ (MPa), and the complex elastic modulus E measured under the conditions of the measurement temperature of the tire inner member: 0° C., initial strain: 10%, dynamic strain: ±1%, frequency: 10 Hz, deformation mode: elongation ＊ ｉ (MPa) satisfies the following (Formula 1), The tire is characterized in that the center line of the tire and the center of the electronic component mounting member are offset in the tire width direction, and the offset width is 1 to 50 mm. E ＊ ｒ / E ＊ ｉ <1 ・・・・・・・・・・・・(Formula 1)

2. A tire in which an electronic component mounting member for incorporating an electronic component is attached to a surface of an inner tire member, the electronic component mounting member includes an electronic component storage portion that stores the electronic component, and a joining portion that includes a joining surface for mounting the electronic component mounting member to a surface of the tire inner member, The complex elastic modulus E measured under the conditions of the measurement temperature of the joint: 0° C., initial strain: 10%, dynamic strain: ±1%, frequency: 10 Hz, deformation mode: elongation ＊ ｒ (MPa), and the complex elastic modulus E measured under the conditions of the measurement temperature of the tire inner member: 0° C., initial strain: 10%, dynamic strain: ±1%, frequency: 10 Hz, deformation mode: elongation ＊ ｉ (MPa) satisfies the following (Formula 1), The loss tangent (0°C tan δ) measured under the conditions of the measurement temperature of the tire inner member: 0°C, initial strain: 10%, dynamic strain: ±2.5%, frequency: 10 Hz, and deformation mode: tension ｉ ) is 0.55 or less. E ＊ ｒ / E ＊ ｉ <1 ・・・・・・・・・・・・(Formula 1)

3. The loss tangent (0° C. tan δ ｉ 3. The tire according to claim 2, wherein the axial length of the tire is 0.35 or less.

4. A tire in which an electronic component mounting member for incorporating an electronic component is attached to a surface of an inner tire member, the electronic component mounting member includes an electronic component storage portion that stores the electronic component, and a joining portion that includes a joining surface for mounting the electronic component mounting member to a surface of the tire inner member, The complex elastic modulus E measured under the conditions of the measurement temperature of the joint: 0° C., initial strain: 10%, dynamic strain: ±1%, frequency: 10 Hz, deformation mode: elongation ＊ ｒ (MPa), and the complex elastic modulus E measured under the conditions of the measurement temperature of the tire inner member: 0° C., initial strain: 10%, dynamic strain: ±1%, frequency: 10 Hz, deformation mode: elongation ＊ ｉ (MPa) satisfies the following (Formula 1), At least one carcass layer is provided radially inward of the tread portion, A thickness d from the radially inner surface of the carcass layer located at the radially innermost position to the radially inner surface of the tire inner member ｉ (mm) is 0.6 mm or more. E ＊ ｒ / E ＊ ｉ <1 ・・・・・・・・・・・・(Formula 1)

5. A tire in which an electronic component mounting member for incorporating an electronic component is attached to a surface of an inner tire member, the electronic component mounting member includes an electronic component storage portion that stores the electronic component, and a joining portion that includes a joining surface for mounting the electronic component mounting member to a surface of the tire inner member, The complex elastic modulus E measured under the conditions of the measurement temperature of the joint: 0° C., initial strain: 10%, dynamic strain: ±1%, frequency: 10 Hz, deformation mode: elongation ＊ ｒ (MPa), and the complex elastic modulus E measured under the conditions of the measurement temperature of the tire inner member: 0° C., initial strain: 10%, dynamic strain: ±1%, frequency: 10 Hz, deformation mode: elongation ＊ ｉ (MPa) satisfies the following (Formula 1), The glass transition temperature Tg of the joint ｒ (°C), and the glass transition temperature Tg of the tire inner member ｉ (°C) satisfies the following (Formula 2): E ＊ ｒ / E ＊ ｉ <1 ・・・・・・・・・・・・・・・(Formula 1) Tg ｉ -Tg ｒ <0 ···················(Formula 2)

6. A tire in which an electronic component mounting member for incorporating an electronic component is attached to a surface of an inner tire member, the electronic component mounting member includes an electronic component storage portion that stores the electronic component, and a joining portion that includes a joining surface for mounting the electronic component mounting member to a surface of the tire inner member, The complex elastic modulus E measured under the conditions of the measurement temperature of the joint: 0° C., initial strain: 10%, dynamic strain: ±1%, frequency: 10 Hz, deformation mode: elongation ＊ ｒ (MPa), and the complex elastic modulus E measured under the conditions of the measurement temperature of the tire inner member: 0° C., initial strain: 10%, dynamic strain: ±1%, frequency: 10 Hz, deformation mode: elongation ＊ ｉ (MPa) satisfies the following (Equation 3), E ＊ ｒ The tire is characterized in that the compressive strength is 1 MPa or more and 40 MPa or less. E ＊ ｒ / E ＊ ｉ <0.95 ・・・・・・・・・・・・・・・(Formula 3)

7. 7. The tire according to claim 1, wherein the electronic component storage portion of the electronic component mounting member has an open side facing the joining surface.

8. 8. The tire according to claim 1, wherein the electronic part mounting member is attached to a surface of an inner tire member that has been polished in advance.

9. 9. The tire according to claim 1, wherein the electronic component mounting member is attached to a surface of the tire inner member by using an adhesive.

10. 10. The tire according to claim 1, wherein the center of the electronic component mounting member is located within two central regions closest to the tire equatorial plane out of four regions defined in a tire cross section by lines extending parallel to the tire radial direction from a line dividing the tire cross section into four equal parts between both ground contact ends that define a tread contact width.

11. 11. The tire according to claim 1, which is a passenger car tire.

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