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Tread rubber for tire and preparation method thereof

A tire tread, butadiene rubber technology, used in special tires, tire parts, rolling resistance optimization, etc. The effect of excellent capacitance and low rolling resistance

Active Publication Date: 2019-10-22
SHANDONG HUAJU POLYMER MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Both trans-1,4-polyisoprene and trans-1,4-polybutadiene are hard crystalline materials at room temperature, including trans-1,4-polyisoprene or trans -1,4-polybutadiene compound has high hardness and poor viscosity, making it difficult to process and apply

Method used

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  • Tread rubber for tire and preparation method thereof
  • Tread rubber for tire and preparation method thereof
  • Tread rubber for tire and preparation method thereof

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preparation example Construction

[0045] The present invention also provides a kind of preparation method of above-mentioned tire tread rubber, comprises the following steps:

[0046] A) banburying and mixing natural rubber, butadiene rubber, trans-butadiene rubber, zinc oxide, stearic acid, anti-aging agent, filler, filler dispersant and silane coupling agent to obtain a masterbatch;

[0047] B) banburying and mixing the first-stage masterbatch, accelerator, sulfur and anti-reversion agent to obtain a second-stage masterbatch;

[0048] C) The second-stage masterbatch is opened for kneading, and the obtained final mix is ​​placed at a temperature of 21-25° C. and a humidity of 30-80% for 4-168 hours;

[0049] D) vulcanizing the final rubber mix after standing at a temperature of 140-180° C. and a pressure of 10-35 MPa to obtain tire tread rubber.

[0050] In the preparation method, the components and proportions of the raw materials are the same as above, and will not be repeated here. The present invention ...

Embodiment 1

[0068] First natural rubber SMR20, butadiene rubber BR 9000 and trans-butadiene rubber TBIR-0958 were banbury mixed for 1 min, then zinc oxide, stearic acid, antioxidant (1.5 parts by weight of antioxidant 4020, 1.2 parts by weight of antiaging agent agent RD and 1.0 parts by weight of paraffin), filler (carbon black N234 of 50 parts by weight and white carbon black of 20 parts), filler dispersant (carbon black dispersant) and silane coupling agent Si-69 banbury mixing 4min, The temperatures of the two banburying and blending were both 70° C., the rotation speeds were 70 rpm, and the feeding coefficients were both 0.75. The discharge temperature after the banburying and blending was 155° C. to obtain a masterbatch.

[0069] Put one section of masterbatch into internal mixer, add accelerator CBS-80, sulfur and anti-reversion agent CTP to banbury and mix to obtain second section of masterbatch; the temperature of said banbury blending is 60°C, and the speed is 40rpm, the feeding...

Embodiment 2

[0074] First natural rubber SMR20, butadiene rubber BR 9000 and trans-butadiene rubber TBIR-2058 are banbury mixed for 1min, then add zinc oxide, stearic acid, anti-aging agent (1.5 weight parts of anti-aging agent 4020, 1.2 weight parts of anti-aging agent RD and 1.0 parts by weight of paraffin), filler (carbon black N234 of 50 parts by weight and white carbon black of 20 parts), filler dispersant (carbon black dispersant) and silane coupling agent Si-69 banbury mixing 4min, The temperatures of the two banburying and blending were both 70° C., the rotation speeds were 70 rpm, and the feeding coefficients were both 0.75. The discharge temperature after the banburying and blending was 155° C. to obtain a masterbatch.

[0075] Put one section of masterbatch into internal mixer, add accelerator CBS-80, sulfur and anti-reversion agent CTP to banbury and mix to obtain second section of masterbatch; the temperature of said banbury blending is 60°C, and the speed is 40rpm, the feedin...

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Abstract

The invention especially relates to tread rubber for a tire and a preparation method thereof, belonging to the field of rubber processing. The tread rubber for the tire comprises, by weight, 50-95 parts of natural rubber, 5-30 parts of butadiene rubber, 5-20 parts of trans-1,4-poly(butadiene-co-isoprene) copolymer rubber, 40-70 parts of a filler, 1.0-3.0 parts of a filler dispersant, 1.0-4.0 partsof a silane coupling agent, 2.0-6.0 parts of zinc oxide, 0.5-3.0 parts of stearic acid, 1.5-5.0 parts of an anti-aging agent, 0.8-3.0 parts of an accelerator, 0.6-2.0 parts of sulfur and 0-0.6 part of an anti-reversion agent. In the tread rubber for the tire provided by the invention, the compatibility and co-vulcanization characteristics of the natural rubber and the butadiene rubber are superior, the filler is uniformly dispersed, and the above components are synergistically reacted with other components, so the finally obtained tread rubber has low rolling resistance and little heat generated by compression on the premise that the wet skid resistance is basically unchanged, and has good wear resistance at the same time.

Description

technical field [0001] The invention relates to the field of rubber processing, in particular to a tire tread rubber and a preparation method thereof. Background technique [0002] Since November 1, 2012, the EU tire labeling regulations have been officially implemented, requiring car tires, light truck tires, truck tires and bus tires sold in the EU to be labeled to indicate the rolling resistance (fuel efficiency) and rolling noise of the tires. And the level of slippery grip performance. However, in the field of tire manufacturing, there has always been a "devil's triangle", which means that the tire's wear resistance, wet skid resistance and rolling resistance cannot be improved at the same time due to its own performance, that is, it must be sacrificed. One or both properties can be improved at the same time to obtain another performance. For truck tires, how to reduce rolling resistance and heat generation without changing the wet skid resistance has become a pain po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L9/00C08L91/06C08K13/02C08K3/22C08K5/09C08K3/06C08K3/04C08K3/36B60C1/00
CPCC08L7/00B60C1/0016C08L2205/025C08L2205/035C08K2003/2296C08L9/00C08L91/06C08K13/02C08K3/22C08K5/09C08K3/06C08K3/04C08K3/36Y02T10/86
Inventor 栾波王日国贺爱华王浩邵华锋李兰阁
Owner SHANDONG HUAJU POLYMER MATERIALS CO LTD
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