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A kind of tire tread rubber and preparation method thereof

A technology for tire tread and final compounding, which is applied in special tires, tire parts, transportation and packaging, etc., and can solve problems such as poor viscosity, high hardness of compounded rubber, and difficult processing and application.

Active Publication Date: 2022-01-25
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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  • A kind of tire tread rubber and preparation method thereof
  • A kind of tire tread rubber and preparation method thereof
  • A kind of tire tread rubber 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 relates to the field of rubber processing, in particular to a tire tread rubber and a preparation method thereof. The tire tread rubber comprises, in parts by weight: 50-95 parts of natural rubber; 5-30 parts of butadiene rubber; 5-20 parts of trans-butadiene rubber; 40-70 parts of filler; 1.0-3.0 parts of filler dispersant silane coupling agent 1.0-4.0 parts; zinc oxide 2.0-6.0 parts; stearic acid 0.5-3.0 parts; anti-aging agent 1.5-5.0 parts; accelerator 0.8-3.0 parts; sulfur 0.6-2.0 parts; Dose 0-0.6 parts. In the tire tread rubber provided by the present invention, the compatibility and co-vulcanization characteristics of natural rubber and butadiene rubber are better, and the filler is evenly dispersed. Under the premise that the wet skid resistance is basically unchanged, the rolling resistance and compression heat generation are lower, and at the same time, the wear resistance is better.

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 Patents(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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