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Rubber composition for airtight layer of tire and tire manufactured with the same

A technology of rubber composition and airtight layer, applied in special tires, tire parts, transportation and packaging, etc., which can solve the problems of poor fatigue resistance and heat aging resistance

Inactive Publication Date: 2014-05-21
HANKOOK TIRE WORLDWIDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, the above-mentioned technology has the problem of adding a layer in the tire manufacturing process, and when the above-mentioned thermoplastic elastomer composition is used instead of the above-mentioned first and second inner liners, there will be problems such as deterioration of fatigue resistance and heat aging resistance. point

Method used

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  • Rubber composition for airtight layer of tire and tire manufactured with the same

Examples

Experimental program
Comparison scheme
Effect test

manufacture example

[0097] [Manufacturing example: Manufacture of rubber composition]

[0098] The rubber compositions for tire inner liners related to the following Examples and Comparative Examples were produced after mixing in a Wanmari mixer according to the compounding ratio shown in Table 1 below, and discharged at a certain temperature.

[0099] Specifically, raw rubber, 2 / 3 of carbon black, mixing homogenizer, binder, zinc oxide, stearic acid and softener are mixed in a Wanmali mixer, and released at 160°C. Add 1 / 3 of carbon black and softener to the mixed rubber and mix it in a Wanmari mixer, then let it out at 160°C. After adding sulfonating agent and vulcanization accelerator to the mixed rubber and mixing it in the Wanmali mixer, it is released after 1 minute and 30 seconds.

[0100] [Table 1] (unit: parts by weight)

[0101]

comparative example

Example

natural rubber

20

20

Halogenated butyl rubber (1)

80

80

carbon black (2...

experiment example

[0112] [Experimental example: Measurement of physical properties of manufactured rubber composition]

[0113] After vulcanizing the rubber compositions produced in the above Examples and Comparative Examples at 160°C for 20 minutes, tensile properties, Tan δ, fatigue resistance, fracture resistance and heat resistance were measured for the vulcanized products according to ASTM regulations. The results are shown in Table 2 below.

[0114] 【Table 2】

[0115]

[0116] -Hardness is measured by ASTM shore-A method after being placed in the combustion chamber for 1 hour;

[0117] -100% modulus (Kgf / cm 2 ) is to cut the sample into a Yaling shape and measure it with a tensile testing machine. The 100% modulus refers to the stress acting on the sample when the sample is stretched 100%;

[0118] - Elongation (%) is measured by expressing the strain (Strain) value when the sample breaks in the tensile testing machine as a percentage;

[0119] - Tensile strength (Kgf / cm 2 ) is me...

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Abstract

The present invention relates to a rubber composition for an airtight layer of a tire and the tire manufactured with the same. The rubber composition comprises the following components: 100 by weight parts of crude rubber, which comprises 30-100 by weight parts of halogenated butyl rubber and 0-70 by weight parts of natural rubber; and 2-20 by weight parts of mixing homogenizer, wherein the mixing homogenizer comprises a mixture which comprises alkyl-phenol resin, benzofuran-indene resin and olefin resin. The rubber composition is adopted for the airtight layer of the tire so the structure and the manufacturing method of the airtight layer of the tire are simplified. Simultaneously the air tightness, fatigue resistance and heat aging resistance of the tire are improved. Furthermore the rubber composition has excellent adhesion performance with a tire body layer.

Description

technical field [0001] The present invention relates to a rubber composition for a tire inner liner and a tire manufactured using the composition, and more specifically, to a rubber composition for a tire inner liner having a two-layer structure capable of improving natural rubbers that are difficult to blend with each other A rubber composition for a tire inner liner with a homogeneous blend of halogenated butyl rubber and a tire manufactured using the composition. Background technique [0002] Viewing the internal structure of a common tubeless tire from the inner side, it consists of the second inner liner that maintains the tire pressure, the first inner liner as a buffer between the second inner liner and the carcass layer, and the carcass as the main body of the tire. layers etc. [0003] The compound rubber used for the above-mentioned carcass layer is composed of a natural rubber-like rubber composition in which the ratio of general natural rubber and styrene-butadi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/28C08L7/00C08L25/04C08L23/22C08K13/02C08K3/04B60C1/00
CPCB60C1/0008C08K3/04C08L7/00C08L23/22C08L2201/08C08L2205/035
Inventor 郑志洙安庸镇
Owner HANKOOK TIRE WORLDWIDE