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A kind of high-performance tire tread rubber and preparation method thereof
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A tire tread, high-performance technology, applied in special tires, tire parts, transportation and packaging, etc., can solve the problems of aromatic oil migration and pollution
Active Publication Date: 2021-10-26
SHANDONG HUAJU POLYMER MATERIALS CO LTD
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[0005] One of the purposes of the present invention is to solve the problem of migration and pollution of aromatic oil in tire use, provide a low molecular weight trans-butadiene-isoprene copolymer rubber that can participate in vulcanization and crosslinking and use it in tire tread rubber , to improve the processing and mixing performance of rubber materials, and at the same time participate in the role of vulcanization and crosslinking
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Embodiment 1
[0081] A high-performance tire tread rubber compound consists of the following components in parts by weight:
[0082] 80 parts of natural rubber;
[0083] Butadiene rubber 20 parts;
[0084] 10 parts of low molecular weight trans-butadiene-isoprene copolymer rubber;
[0085] Others are the same as Comparative Example 1.
[0086] The molar content of butadiene units in the low molecular weight trans-butadiene-isoprene copolymer rubber is 40.7%, the molar content of isoprene units is 59.3%, and the molar content of trans-1,4-structure is greater than 95% %, Mooney viscosity value (100°C, 3+4) is 21.6. The properties of the vulcanizate are shown in Table 1.
Embodiment 2
[0088] One-stage banburying process is:
[0089] Add natural rubber and butadiene rubber in the internal mixer, banbury for 1min, put in zinc oxide, stearic acid, anti-aging agent and anti-scorch agent, banbury for 1min; put in all carbon black, banbury for 2min; put in white carbon black and Silane coupling agent, banburying for 7min; cleaning the upper bolt; adding low molecular weight trans-butadiene-isoprene copolymer rubber, banburying for 7.5min, 150°C for rubber removal, and standing at room temperature for 1 hour to obtain a section of banbury rubber .
[0090] Others are the same as embodiment 1. The properties of the vulcanizate are shown in Table 1.
Embodiment 3
[0092] 73 parts of natural rubber;
[0093] Butadiene rubber 18 parts;
[0094] 9 parts of low molecular weight trans-butadiene-isoprene copolymer rubber;
[0095] Others are the same as embodiment 1. The properties of the vulcanizate are shown in Table 1.
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Abstract
The invention relates to a high-performance tire tread rubber and a preparation method thereof. The formula mass parts of the tire tread rubber is as follows: 60-90 parts of natural rubber, 0-20 parts of butadiene rubber, 9-20 parts of low molecular weight trans-butadiene-isoprene copolymer rubber, 40-20 parts of carbon black 60 parts, 0-20 parts of white carbon black, 0-2 parts of silane coupling agent, 1-5 parts of zinc oxide, 1-5 parts of stearic acid, 0.3-3 parts of sulfur, 0.5-5 parts of accelerator, anti-aging agent 1-3 parts, other additives 1-10 parts. The invention adopts low molecular weight trans-butadiene-isoprene copolymerized rubber to modify tire tread rubber, the tensile strength of the vulcanized rubber is increased by 15-20%, the tear strength is increased by 1%-20%, and the loss factor at 60°C Reduced by 4% to 20%, wear reduced by 10% to 25%. Various performances of the tire tread rubber compound of the present invention meet the performance of the tire tread rubber.
Description
technical field [0001] The invention relates to a high-performance tire tread rubber, in particular to the application of low molecular weight trans-butadiene-isoprene copolymerized rubber in the tire tread rubber and the preparation method of the high-performance tire tread rubber. Background technique [0002] China is a big tire producer and a big tire exporter. The implementation of the EU labeling law has caused a major impact on my country's tire industry, forcing my country's tire industry to continuously improve tire grades, develop new materials, and develop new formulas. The "Devil's Triangle" in tires: Rolling resistance, wear and wet skid resistance are important indicators that affect tire performance. In the rubber industry, softeners are usually used. Such substances usually contain aromatic hydrocarbon compounds, which are toxic to the human body and most of them are polluting. As the country pays more attention to environmental protection, the use of aroma...
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