The invention belongs to the technical field of thermoplastic elastomers, and particularly relates to low-temperature-resistant and flexing-resistant winter tire sidewall rubber, which is prepared from the following components in parts by mass: 25 to 75 parts of rare earth high cis butadiene-isoprene rubber, 25 to 75 parts of natural rubber, 45 to 65 parts of carbon black, 1 to 2 parts of sulfur and 15 to 32 parts of auxiliary agents, wherein the molar ratio of a butadiene monomer to an isoprene monomer of the rare earth high cis butadiene-isoprene rubber is (60-90): (10-40), and the molar fraction of a cis-1, 4-structure is greater than 90%. The winter tire sidewall rubber provided by the invention is low-temperature-resistant and flexing-resistant, and has good low-temperature resistance and flexing resistance, so that a tire sidewall still has relatively good damping performance and relatively long service life in a low-temperature environment in winter.
本发明属于热塑性弹性体技术领域,具体涉及一种耐低温、耐屈挠的冬季轮胎胎侧胶,由以下组分及组分质量份数组成:稀土高顺式丁异戊橡胶25‑75份、天然橡胶25‑75份、炭黑45‑65份、硫磺1‑2份、辅助助剂15‑32份;其中,所述稀土高顺式丁异戊橡胶的丁二烯单体和异戊二烯单体的摩尔比为(60‑90):(10‑40),顺式‑1,4‑结构摩尔分数大于90%。本发明提供了一种耐低温、耐屈挠的冬季轮胎胎侧胶,具有良好的耐低温性和耐屈挠性,使得轮胎胎侧在冬季的低温环境下仍然具有较好的减震性能和较高的使用寿命。
Low-temperature-resistant and flexing-resistant winter tire sidewall rubber and preparation method thereof
一种耐低温、耐屈挠的冬季轮胎胎侧胶及其制备方法
2023-03-07
Patent
Electronic Resource
Chinese
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS |
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