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A kind of rubber composition with self-sealing function, preparation method and tire

A rubber composition and self-sealing technology, which is applied to special tires, tire parts, reinforcement layers of pneumatic tires, etc., can solve the problems of large driving risks for drivers and passengers, reduced tire self-sealing effect, continuous outflow of self-sealing materials, etc. problems, to achieve the effect of improving driving safety, avoiding large-area flow, and preventing delamination

Active Publication Date: 2022-04-29
SAILUN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Therefore, most of the existing technical solutions are that the self-sealing material flows and seals the tire after being punctured. When the tire is punctured, the material with fluidity will automatically seal the puncture hole, but the sealing material seals There will be no active cross-linking and curing after blocking, and there will still be problems of air leakage and continuous outflow of self-sealing materials. The self-sealing effect of the tire is reduced; at the same time, the self-sealing material is mostly sprayed on the inner surface of the tire. When the vehicle is parked in a high-temperature environment, the self-sealing material will flow, which will cause the tire to have a dynamic balance problem and cause serious problems for drivers and passengers. greater risk of driving

Method used

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  • A kind of rubber composition with self-sealing function, preparation method and tire
  • A kind of rubber composition with self-sealing function, preparation method and tire
  • A kind of rubber composition with self-sealing function, preparation method and tire

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Embodiment 1

[0040] A kind of rubber composition with self-sealing function of the present embodiment, preparation method, its raw material includes thermoplastic elastomer POE 40 parts by weight, natural rubber 15 parts, bromobutyl 25 parts, liquid isoprene rubber 20 parts by weight Parts, 25 parts of modified silica, 2.0 parts of silica dispersant, 10 parts of montmorillonite, 2.5 parts of silane coupling agent bis(triethoxysilylpropyl)-tetrasulfide, non-polluting anti-aging agent 3.0 parts of LY-40, 20 parts of naphthenic rubber operating oil, 3.0 parts of tackifying resin, 4.0 parts of photocuring agent 2-hydroxy-2-methyl-1-phenylacetone, the specific formula is shown in Table 1; the preparation method is as follows :

[0041] S1. One stage of internal refining:

[0042] 1) Set the temperature of the internal mixer to 70°C and the rotational speed to 70rpm, add thermoplastic elastomer POE, natural rubber, brominated butyl rubber, and liquid isoprene rubber into the internal mixer, and...

Embodiment 2

[0051] 40 parts of thermoplastic elastomer, 15 parts of natural rubber, 25 parts of bromobutyl rubber, 20 parts of liquid isoprene rubber, 25 parts of modified silica, 2.0 parts of silica dispersant, 10 parts of montmorillonite, silane 2.5 parts of coupling agent bis(triethoxysilylpropyl)-tetrasulfide, 3.0 parts of non-polluting anti-aging agent LY-40, 20 parts of naphthenic rubber operating oil, 6.0 parts of titanium dioxide, 6.0 parts of polyamide fiber, 3.0 parts of tackifying resin, 4.0 parts of photocuring agent 2-hydroxy-2-methyl-1-phenylacetone, the specific formula is shown in Table 1; the preparation method is as follows:

[0052] S1. One stage of internal refining:

[0053] 1) Set the temperature of the internal mixer to 70°C and the rotational speed to 70rpm, add thermoplastic elastomer POE, natural rubber, brominated butyl rubber, and liquid isoprene rubber into the internal mixer, and add naphthenic rubber to the internal mixer at the same time Operating oil, mix...

Embodiment 3

[0062] A kind of rubber composition with self-sealing function of the present embodiment, preparation method, its raw material includes thermoplastic elastomer POE 45 parts, natural rubber 20 parts, brominated butyl rubber 15 parts, liquid isoprene rubber by weight parts 20 parts, 25 parts of modified white carbon black, 2.0 parts of white carbon black dispersant, 10 parts of montmorillonite, 2.5 parts of silane coupling agent mercaptopropylethoxybis (propane-hexapropoxy) siloxane , 3.0 parts of pollution-free anti-aging agent 264, 20 parts of naphthenic rubber operating oil, 6.0 parts of titanium dioxide, 6.0 parts of polyamide fiber, 3.0 parts of tackifying resin, 5.0 parts of light curing agent 1-hydroxycyclohexyl phenyl ketone, specifically The formula is shown in Table 1; the preparation method is as follows:

[0063] S1. One stage of internal refining:

[0064] 1) Set the temperature of the internal mixer to 65°C and the rotational speed to 72rpm, add thermoplastic elas...

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Abstract

The invention discloses a rubber composition with self-sealing function, a preparation method and a tire. In parts by weight, it comprises 30-60 parts of thermoplastic elastomer, 10-30 parts of natural rubber, and 15-25 parts of brominated butyl rubber. , 15-40 parts of liquid isoprene rubber, 5.0-30 parts of modified silica, 0.5-3.0 parts of silica dispersant, 0.5-3.0 parts of silane coupling agent, 5.0-15 parts of montmorillonite, non-pollution and anti-aging 2.0-5.0 parts of agent, 5.0-35 parts of oil, 3.0-5.0 parts of tackifying resin, 3.0-6.0 parts of light curing agent. The light-curing agent is introduced into the rubber composition, which flows out and actively solidifies after the tire is punctured, and the sealing effect is visible, and the sealing effect is good; the rubber composition is set between the transition layer and the airtight layer of the tire, and will not The large-area flow ensures the dynamic balance performance of the tire, improves the safety of the tire, and can drive a longer mileage after the tire is punctured.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a rubber composition with self-sealing function, a preparation method and a tire. Background technique [0002] With the current rapid development of society and economy, the number of household cars has been continuously increased, and the quality and performance of tires for automobiles have also been correspondingly improved. [0003] As we all know, tires are composed of corresponding rubber composite materials and skeleton materials. By filling the tires with air or nitrogen, etc., the outer contours of the tires are provided with tension, so that the tires have support and traction functions. During the running of the car, if the tires are pierced by sharp objects such as nails, the tire pressure will be reduced, and accidents such as loss of pressure, rollover, and tire blowout will occur, which seriously affect the life safety of drivers and passengers. [0004] With the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L7/00C08L23/28C08L9/00C08L77/00C08K13/06C08K7/26C08K3/34C08K3/22B60C1/00B60C9/18
CPCC08L23/0815B60C1/0041B60C9/18C08K2003/2241C08L2201/14C08L2205/035B60C2009/1828B60C2009/0035C08L7/00C08L23/283C08L9/00C08L77/00C08K13/06C08K7/26C08K3/346C08K3/22
Inventor 蔡磊王伟任衍峰周天明
Owner SAILUN GRP CO LTD