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Composition for forming seam allowance wear-resistant rubber and seam allowance wear-resistant rubber

A technology of wear-resistant rubber and composition, which is applied in the field of forming the composition of wear-resistant rubber and the field of wear-resistant rubber, which can solve the problems of strong anti-vulcanization and reversion performance, strong deformation recovery ability, etc.

Pending Publication Date: 2022-04-12
SAILUN GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to provide a composition for forming zipper wear-resistant rubber and zipper wear-resistant rubber to solve the problem that the existing zipper wear-resistant rubber is difficult to meet the requirements of strong deformation recovery ability and strong anti-vulcanization reversion performance at the same time. question

Method used

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  • Composition for forming seam allowance wear-resistant rubber and seam allowance wear-resistant rubber
  • Composition for forming seam allowance wear-resistant rubber and seam allowance wear-resistant rubber
  • Composition for forming seam allowance wear-resistant rubber and seam allowance wear-resistant rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Table 1 shows the ingredients of each raw material in the composition used to form the wear-resistant rubber of the spigot.

[0050] The performance parameters of each component in table 1 are as follows:

[0051] Natural rubber: plastic initial value ≥ 40; plastic retention ≥ 45%; Mooney viscosity ML (1+4) 100 ° C is 85 ± 5; impurity content ≤ 0.16%; nitrogen content ≤ 0.6%; volatile matter ≤ 0.5%; Density 0.92g / cm 3 ;

[0052] BR9000: Volatile matter≤0.5%; Mooney viscosity ML(1+4) at 100℃ is 45±5; ash content at 550℃≤0.2%; tensile strength≥13.5Mpa; elongation≥350%; 300% modulus 10.5±1.5Mpa; density 0.92g / cm 3 ;

[0053] High cis polybutadiene rubber VCR412: volatile matter ≤0.5%; Mooney viscosity ML(1+4) at 100°C is 45±5; ash content at 550°C ≤0.2%; 1,2-syndiotactic polybutadiene olefin (SPB) content 12.0%; density 0.91g / cm 3 ;

[0054] Carbon black N375: carbon black oil absorption value (DBP absorption value) 114±5ml / 100g; compressed DBP absorption value 96±5...

Embodiment 2

[0071] The difference from Example 1 is that the components of the raw materials used to form the wear-resistant rubber composition are different, see Table 1 for details.

[0072] The preparation process of the zipper wear-resistant glue is the same as that in Example 1. Table 2 shows the test results of various performances of the wear-resistant glue of the mouth prepared by adopting the composition of the above-mentioned components.

Embodiment 3

[0074] The difference from Example 1 is that the components of the raw materials used to form the wear-resistant rubber composition are different, see Table 1 for details.

[0075] The preparation process of the zipper wear-resistant glue is the same as that in Example 1. Table 2 shows the test results of various performances of the wear-resistant glue of the mouth prepared by adopting the composition of the above-mentioned components.

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Abstract

The invention provides a composition for forming a seam allowance wear-resistant adhesive and the seam allowance wear-resistant adhesive. The composition for forming the seam allowance wear-resistant rubber comprises natural rubber, butadiene rubber, composite rubber, a vulcanizing activator, an accelerant and a vulcanizing agent, and the composite rubber is a mixture of 1, 2-syndiotactic polybutadiene and high cis-1, 4-polybutadiene; the vulcanizing active agent comprises unsaturated carboxylic acid zinc salt. By adding the composite rubber, the modulus and hardness of the seam allowance wear-resistant rubber can be improved, and the wear resistance of the seam allowance wear-resistant rubber is improved; meanwhile, the using amount of filler can be greatly reduced, and heat generation is reduced. The addition of the unsaturated carboxylic acid zinc salt can increase the crosslinking density of each rubber material, and further improve the tensile strength, modulus, deformation recovery capability and anti-reversion performance, thereby inhibiting the compression set of the subsequently prepared seam allowance wear-resistant rubber at high temperature, and being beneficial to inhibiting the deformation of a tire bead part due to stress when being applied to a radial tire, and the service life of the tire bead wear-resistant rubber is prolonged. Meanwhile, the high-temperature-resistant performance is relatively good.

Description

technical field [0001] The invention relates to the technical field of rubber processing, in particular to a composition for forming a wear-resistant rubber for a slit and a wear-resistant rubber for a slit. Background technique [0002] The all-steel radial truck tire is a kind of radial tire. During its use, the bead part needs to bear the load of the vehicle, transmit the braking and steering functions of the vehicle, and bear huge stress. Moreover, under special conditions such as heavy vehicle load, long driving time and distance, sharp turns, frequent braking, or even brake drum lockup, the temperature of the brake drum will reach above 200°C. Zikou wear-resistant rubber is affected by repeated high temperature and cyclical stress and strain. Therefore, on the one hand, the zipper wear-resistant rubber should have better high temperature resistance or aging resistance; The size change of the slit part caused by the strain effect is conducive to maintaining the overal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/00C08K3/04C08K3/06
Inventor 李雯任衍峰夏荣芝中岛幸雄韩董妮
Owner SAILUN GRP CO LTD
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