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Mud tire sidewall rubber composition and preparation method thereof

A technology for sidewall rubber and composition, which is applied in the field of sidewall rubber composition and preparation of mud tires, can solve the problems of complicated mixing steps, reduced rubber strength, low economic benefit and the like, and achieves improved ozone aging resistance. and flexural cracking properties, and the effect of improving ozone resistance

Active Publication Date: 2016-05-04
CONTINENTAL TIRES (CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are some disadvantages in using some ethylene-propylene rubber in the sidewall: 1. It is difficult to achieve co-vulcanization of ethylene-propylene rubber and natural rubber, resulting in a decrease in the strength of the rubber compound
The sidewall of the tire is easily damaged when it is subjected to external force; 2. The use of ethylene-propylene rubber can only improve the ozone aging resistance of the tire sidewall, but cannot improve its flex cracking performance; 3. When natural rubber and ethylene-propylene rubber are used together Generally, segmental mixing is required, the mixing steps are cumbersome, the mixing time is long, and the economic benefit is low
However, for special performance tires, the research is even less

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A mud tire sidewall compound composition, which consists of: 20 parts of natural rubber, 50 parts of styrene-butadiene rubber, 30 parts of butadiene rubber, 40 parts of nano-scale lamellar fillers, 10 parts of white carbon black, 2 parts of zinc oxide 10 parts of stearic acid, 40205 parts of anti-aging agent, 4 parts of aromatic oil, 2 parts of sulfur, 1 part of accelerator NS, and 16 parts of tackifying resin.

[0023] A method for preparing a mud tire sidewall rubber composition, comprising a mixing process and a vulcanization process, characterized in that the mixing process is specifically: taking raw materials according to the formula ratio for later use, mixing natural rubber, styrene-butadiene rubber, Butadiene rubber, white carbon black, zinc oxide, stearic acid, anti-aging agent 4020, and aromatic hydrocarbon oil are added to the internal mixer, the rotor speed is 60-70 rpm, the pressure is 19-20Mpa, and the heating rate is 5-10℃ / For 10 minutes, heat up to 100...

Embodiment 2

[0027] A mud tire sidewall compound composition, which consists of: 30 parts of natural rubber, 40 parts of styrene-butadiene rubber, 30 parts of butadiene rubber, 50 parts of nano-scale lamellar fillers, 5 parts of white carbon black, 3 parts of zinc oxide 4 parts, 4 parts of stearic acid, 40204 parts of anti-aging agent, 2 parts of aromatic oil, 2.5 parts of sulfur, 0.5 parts of accelerator NS, 10 parts of tackifying resin.

[0028] The preparation method is the same as in Example 1.

[0029] Flexing and cracking 2 million times.

Embodiment 3

[0031] A mud tire sidewall compound composition, which consists of: 25 parts of natural rubber, 55 parts of styrene-butadiene rubber, 25 parts of butadiene rubber, 45 parts of nano-scale lamellar fillers, 8 parts of white carbon black, 2 parts of zinc oxide 6 parts, 6 parts of stearic acid, 40204 parts of anti-aging agent, 3 parts of aromatic oil, 1.5 parts of sulfur, 1.2 parts of accelerator NS, and 12 parts of tackifying resin.

[0032] The preparation method is the same as in Example 1.

[0033] Flexing and cracking 2 million times.

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Abstract

The present invention belongs to the technical field of the special performance tire, and in particular relates to a mud tire sidewall rubber composition and a preparation method thereof. The composition consists of 20-30 parts of a natural rubber, 40-60 parts of styrene-butadiene rubber, 20-30 parts of butadiene rubber, 30-50 parts of a nano-sheet filler, 5-10 parts of white carbon black, 2-3 parts of zinc oxide, 4-10 parts of stearic acid, 4-5 parts of an antioxidant 4020, 2-4 parts of aromatic oil, 1.5-2.5 parts of sulfur, 0.5-1.2 parts of an accelerator NS, 10 -16 parts of tackifier resin. The technical scheme can significantly improve ozone aging resistance and flex cracking performance of rubber, and does not affect the original physical and mechanical properties of the rubber.

Description

technical field [0001] The invention belongs to the technical field of tires with special performance, and specifically relates to a mud tire sidewall compound composition and a preparation method. Background technique [0002] The tire sidewall deforms greatly during use, and the flex cracking and ozone aging of the rubber are the main reasons for its damage. The present invention aims to improve the flex cracking resistance and ozone aging resistance of the sidewall rubber, thereby Improve tire life. [0003] Improving the flex cracking resistance and ozone aging resistance of tire sidewall rubber has always been a research topic for tire formula workers. At present, some studies have shown that using part of ethylene-propylene rubber in tire sidewall rubber can effectively improve the rubber compound. Ozone aging resistance. There are some disadvantages in using some ethylene-propylene rubber in the sidewall: 1. It is difficult to achieve co-vulcanization of ethylene-pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08L7/00C08L9/00C08L91/00C08K13/02C08K3/34C08K3/36C08K3/22C08K5/09C08K3/06B29B7/00
CPCB29B7/002C08K2201/003C08K2201/011C08L9/06C08L2201/08C08L2205/035C08L7/00C08L9/00C08L91/00C08K13/02C08K3/34C08K3/36C08K2003/2296C08K5/09C08K3/06
Inventor 尤晓明王显涛张新平曹佃波冯小波
Owner CONTINENTAL TIRES (CHINA) CO LTD
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