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Low-heat-generation and tear-resistant rubber composition for engineering tire and preparation method of low-heat-generation and tear-resistant rubber composition

A rubber composition and tear-resistant technology, which is applied in the field of rubber compositions, can solve the problems of high heat generation performance and poor tear resistance performance of tires, and achieve improved tear strength, improved tear resistance performance, and improved TKPH value Effect

Pending Publication Date: 2022-05-13
SAILUN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of high tire heat generation performance and poor tear resistance performance in the prior art, the present invention provides a preparation method of a low heat generation and tear resistance rubber composition for engineering tires

Method used

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  • Low-heat-generation and tear-resistant rubber composition for engineering tire and preparation method of low-heat-generation and tear-resistant rubber composition
  • Low-heat-generation and tear-resistant rubber composition for engineering tire and preparation method of low-heat-generation and tear-resistant rubber composition
  • Low-heat-generation and tear-resistant rubber composition for engineering tire and preparation method of low-heat-generation and tear-resistant rubber composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Add 100 parts of natural rubber SMR20, 30 parts of N330 carbon black, 1 part of zinc oxide, 2 parts of stearic acid, 0.8 parts of rubber modifier DC-01, and 1 part of EN-01 into the internal mixer for mixing into a piece of masterbatch;

[0034] (2) Mix a section of masterbatch, 15 parts of white carbon black, 1.5 parts of silane coupling agent TESPT, 1 part of antiaging agent RD, and 1 part of antiaging agent 4020 into a second section of masterbatch; according to the Mooney viscosity and process requirements of the masterbatch, It can continue to be re-refined to make three-stage and four-stage masterbatches;

[0035] (3) Put the above-mentioned masterbatch mixture on hold for 8 hours, then add 3 parts of zinc oxide, 0.5 parts of accelerator NS, 0.5 parts of accelerator CZ, 0.3 parts of accelerator DM, and 1.8 parts of sulfur in the internal mixer and mix , After the mixed rubber was parked for 8 hours, it was vulcanized to positive vulcanization with a flat vulc...

Embodiment 2

[0037] (1) Add 100 parts of polyisoprene rubber STR20, 30 parts of N330 carbon black, 1 part of zinc oxide, 2 parts of stearic acid, 0.8 parts of rubber modifier DC-01, and 1 part of EN-01 into the banburying Mixing in the machine to form a section of masterbatch;

[0038](2) Mix a section of masterbatch, 15 parts of white carbon black, 1.5 parts of silane coupling agent γ-mercaptopropyl-trimethoxysilane, and 1 part of antioxidant 4020 into a second section of masterbatch; according to the Mooney viscosity of the masterbatch and According to the technical requirements, it can continue to remelt to make three-stage and four-stage masterbatch;

[0039] (3) Put the above-mentioned masterbatch mixture on hold for 8 hours, then add 3 parts of zinc oxide, 0.5 parts of accelerator NS, 0.5 parts of accelerator CZ, 0.3 parts of accelerator DM, and 1.8 parts of sulfur in the internal mixer and mix , After the mixed rubber was parked for 8 hours, it was vulcanized to positive vulcanizat...

Embodiment 3

[0041] (1) Add 100 parts of styrene-butadiene rubber SBR1502, 25 parts of N375 carbon black, 2 parts of zinc oxide, 0.5 part of stearic acid, add 0.1 part of rubber modifier DC-01, and 1 part of EN-01 into the internal mixer for mixing refining into a section of masterbatch;

[0042] (2) Mix a section of masterbatch, 1 part of white carbon black, 0.1 part of silane coupling agent bis(triethoxypropylsilane) tetrasulfide and disulfide, and 0.5 part of antioxidant RD to form a second section of masterbatch;

[0043] (3) After parking the above masterbatch compound for 8 hours, add 1 part of zinc oxide, 0.5 part of accelerator NS, and 0.5 part of insoluble sulfur in the internal mixer and then mix it. After parking the compound rubber for 8 hours, vulcanize it with a flat plate After being vulcanized to normal vulcanization at 150°C, the rubber composition was obtained.

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Abstract

The invention belongs to the technical field of rubber compositions, and discloses a low-heat-generation and tear-resistant rubber composition for an engineering tire and a preparation method of the low-heat-generation and tear-resistant rubber composition. The preparation method comprises the following steps: (1) preparing a rubber elastomer, carbon black, a hydrazide rubber modifier, zinc oxide, stearic acid and a tear-resistant aid into a section of master batch in an internal mixer, wherein the weight part of the zinc oxide is less than 1.5 times that of the hydrazide rubber modifier; (2) mixing the first-stage rubber master batch, white carbon black, a coupling agent and an anti-aging agent in an internal mixer to generate second-stage rubber master batch; and (3) mixing the first-stage rubber master batch, the second-stage rubber master batch, other zinc oxide, an accelerant and a vulcanizing agent according to the proportion of the composition to prepare the rubber composition. The rubber composition obtained by the preparation method provided by the invention can effectively reduce tire heat generation and improve tire tear resistance, and the preparation method is simple and beneficial to industrial production.

Description

technical field [0001] The invention relates to a rubber composition, in particular to a low heat generation, tear-resistant rubber composition and a preparation method thereof. Background technique [0002] Engineering tires are giant thick products, and their heat generation is the main cause of tire damage. There are two principles for the selection of the base formula of engineering tires: 1. The TKPH value of the tire (the product of the tire load and the vehicle speed, that is, the value of tons of kilometers per hour) satisfies the on-site industrial and mining. If the tire TKPH value is smaller than the on-site TKPH value, the tire is very easy to Thermal damage occurs; 2. Improve the puncture resistance of the tread and tire base to ensure that the belt layer and carcass will not be punctured at the end of the tire's use. [0003] General engineering tire base formula, in order to match the strength and elongation at break of the tread, the heat generation performa...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L9/00C08L9/06C08K13/04C08K5/25C08K3/04C08K7/26C08K5/09C08K3/22
CPCC08K13/04C08K5/25C08K3/04C08K7/26C08K5/09C08K3/22C08K2003/2296C08L7/00C08L9/00C08L9/06C08K13/02
Inventor 石超崔杰王佃尊刘勇杨开玉
Owner SAILUN GRP CO LTD
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