Anti-revulcanization support rubber for run-flat tires

A run-flat tire, anti-reversion technology, applied to special tires, tire parts, transportation and packaging, etc., can solve problems such as rim damage, car accidents, vehicle imbalance, etc., and achieve the improvement of anti-reversion performance Effect

Inactive Publication Date: 2020-06-05
DONGYING FANGXING RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Under the condition of low air pressure or zero air pressure, the tires are prone to problems suc

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A support rubber for anti-vulcanization reversion of run-flat tires, which is composed of the following raw materials in proportions by weight: 70 parts of 3# smoked sheet rubber, 30 parts of neodymium-based butadiene rubber, and 60 parts of N550 carbon black , 2 parts of TDAE oil, 1.5 parts of poly-2,2,4-trimethyl-1,2-dihydroquinoline, N-(1,3-dimethyl)butyl-N'-phenyl-p-phenyl 2.5 parts of diamine, 5 parts of zinc oxide, 2 parts of stearic acid, 2.3 parts of N-tert-butyl-2-benzothiazole sulfenamide, 4 parts of sulfur, 0.1 part of anti-scorch agent, 1.5 parts of anti-reversion additive share.

[0026] Using the anti-reversion support rubber for run-flat tires described in Example 1, after vulcanization at 150° C. for 30 minutes, the reversion rate dropped to 0.8%. 200% tensile strength is 16MPa, retention rate is 98%; tensile strength is 17.5MPa, retention rate is 98.7%; elongation at break is 168%, retention rate is 98.7%; resilience at 30°C is 73% , the retention rat...

Embodiment 2

[0028] A support rubber for anti-vulcanization reversion of run-flat tires, which is composed of the following raw materials in proportions by weight: 80 parts of 3# smoked sheet rubber, 20 parts of neodymium-based butadiene rubber, and 65 parts of N550 carbon black , 0 parts of TDAE oil, 1 part of poly-2,2,4-trimethyl-1,2-dihydroquinoline, N-(1,3-dimethyl)butyl-N'-phenyl-p-phenylene 3 parts of diamine, 4 parts of zinc oxide, 1.5 parts of stearic acid, 2 parts of N-tert-butyl-2-benzothiazole sulfenamide, 3 parts of sulfur, 0.1 part of anti-scorch agent, 2.5 parts of anti-reversion additive share.

[0029] Using the anti-reversion support rubber for run-flat tires described in Example 2, after vulcanization at 150° C. for 30 minutes, the reversion rate dropped to 0.5%. 200% tensile strength is 17.3MPa, retention rate is 98%; tensile strength is 18MPa, retention rate is 98.7%; elongation at break is 162%, retention rate is 98.7%; resilience at 30°C is 71% , the retention rate ...

Embodiment 3

[0031]A support rubber used for anti-vulcanization reversion of run-flat tires, which is composed of the following raw materials in proportions by weight: 80 parts of 3# smoked sheet rubber, 20 parts of neodymium-based butadiene rubber, and 45 parts of N550 carbon black , 0 parts of TDAE oil, 1 part of poly-2,2,4-trimethyl-1,2-dihydroquinoline, N-(1,3-dimethyl)butyl-N'-phenyl-p-phenylene 3 parts of diamine, 3 parts of zinc oxide, 1.5 parts of stearic acid, 1.9 parts of N-cyclohexyl-2-benzothiazole sulfenamide, 8.75 parts of sulfur, 0.1 part of anti-scorch agent, 2.5 parts of anti-reversion additive .

[0032] Using the anti-reversion support rubber for run-flat tires described in Example 3, after vulcanization at 150° C. for 30 minutes, the reversion rate dropped to 0.6%. 200% tensile strength is 13.3MPa, retention rate is 98%; tensile strength is 15MPa, retention rate is 98.7%; elongation at break is 218%, retention rate is 98.7%; resilience at 30°C is 78% , the retention r...

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Abstract

The invention discloses anti-revulcanization support rubber for run-flat tires, and relates to the technical field of rubber production. The anti-revulcanization supporting rubber for a run-flat tireis prepared from the following raw materials in parts by weight: 3# smoked sheet rubber, neodymium butadiene rubber, carbon black N550, TDAE oil, poly-2,2,4-trimethyl-1,2-dihydroquinoline, N-(1,3-dimethyl)butyl-N'-phenyl p-phenylenediamine, zinc oxide, stearic acid, sulfenamide accelerators, sulfur, scorch retarder and anti-revulcanization additives. The supporting rubber has good vulcanization revulcanization resistance, and meanwhile, the resilience, flexibility, tearing strength, low heat generation and other properties of vulcanized rubber can still be well maintained.

Description

technical field [0001] The invention relates to the technical field of rubber production, in particular to a support rubber used for anti-reversion of run-flat tires. Background technique [0002] With the development of the automobile industry, high-end automobile brands are rapidly occupying China, and the corresponding demand for high-safety tires is gradually increasing; run-flat tires are a new type of tire that mainly focuses on safety performance. When the loss is zero, the vehicle can still travel more than 80km at a speed of 80km / h, which not only prevents the risk of car accidents due to sudden loss of pressure caused by tire imbalance, but also avoids the worry of tires breaking down due to loss of pressure in the wild or halfway. Moreover, the spare tire is also omitted, thereby reducing the weight of the vehicle and reducing fuel consumption. [0003] Run-flat tires are a major trend in the future development of the automotive supporting industry. At present, m...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L9/00C08K13/02C08K5/18C08K3/22C08K5/09C08K3/06B60C17/00B60C1/00
CPCB60C1/00B60C17/00B60C17/0009C08K2003/2296C08L7/00C08L2205/035C08L9/00C08K13/02C08K5/18C08K3/22C08K5/09C08K3/06
Inventor 李相海
Owner DONGYING FANGXING RUBBER CO LTD
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