Wet-skid-resistant thermoplastic elastomer for power-assisted tire and preparation method thereof

Abstract

The invention discloses a wet-skid-resistant thermoplastic elastomer for a power-assisted tire and a preparation method thereof, belonging to the technical field of thermoplastic elastomer preparation. The thermoplastic elastomer comprises hydrogenated styrene elastomer, epoxidized rubber, nitrile rubber, heat-conducting resin, polyolefin resin, a filler, an antioxidant, a lubricant and an auxiliary agent. According to the wet-skid-resistant thermoplastic elastomer for the power-assisted tire and the preparation method thereof disclosed in the invention, the above raw materials are compounded,a prepared thermoplastic elastic material is resistant to high temperature and excellent in use fatigue performance; more importantly, the prepared thermoplastic elastic material is excellent in wetskid resistance; since the epoxidized rubber and the nitrile rubber are selected, the wet skid resistance of the material is ensured, the material has excellent wear resistance and excellent fatigue resistance, ensures driving safety when applied to tires, and has wet skid resistance equivalent to the wet skid resistance of a pneumatic tire; the plasticizer is not added, so the heat resistance ofthe material is improved; and the anti-UV agent is added, so the ozone resistance of the material is improved.

Description

technical field [0001] The invention relates to the technical field of thermoplastic elastomer preparation, in particular to a wet anti-skid thermoplastic elastomer for power assist tires and a preparation method thereof. Background technique [0002] According to the data in the "2019-2024 In-depth Market Research and Investment Prospect Forecast Analysis Report on China's Auto Parts Manufacturing Industry", the total number of private cars exceeds 180 million, and there are 42 cars per 100 households. Statistics show that there are 40 cities across the country with more than one million cars, and 11 cities including Beijing, Chengdu, Shenzhen, Shanghai, Chongqing, Tianjin, Suzhou, Zhengzhou, Hangzhou, Guangzhou, and Xi'an have more than 2 million cars. The huge market of automobiles in our country will drive the strong demand of the tire industry. The China Automobile Association predicts that the growth rate of China's auto market in 2019 may be about 6%. By 2025, the n...

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Problems solved by technology

[0004] Chinese patent CN 105295216 A introduces a thermoplastic elastomer material for anti-fatigue, temperature-resistant and non-pneumatic tires and its preparation method, which is to add white oil, polyphenylene ether, polyolefin and filler to the ultra-high molecular weight SEBS system, The thermoplastic elastomer for non-inflatable tires was obtained by twin-screw extrusion and granulation. Although the traditional styrene-based thermoplastic elastomer materials have overcome the problems of poor fatigue and high temperature resistance for long-term use, there is no such thing as wet anti-slip. To elaborate, Chinese patent CN 108504026 A introduces a thermoplastic elastic material for making air-free tires and its preparation method, which is to add white oil, polypropylene, EPDM rubber and other additives to the SEBS system , and then extruded and granulated by a twin-screw machine to make a thermoplastic elastomer for air-free tires, but its application field is in bicycles, and it has not been elaborated in terms of wet anti-skid and fatigue resistance

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