The invention relates to a high-heat-transfer tire sidewall rubber composition. The high-heat-transfer tire sidewall rubber composition is prepared from the following raw material components in parts by weight: 20 to 70 parts of natural cis-1,4-polyisoprene rubber, 30 to 80 parts of cis-1,4-butadiene rubber and 20 to 40 parts of HAF carbon black. The iodine absorption value of the HAF carbon black is 82 +/-5g/kg, the DBP absorption value is (102+/-5)*10<-5> m<3>/kg, and the nitrogen adsorption specific surface area is (75+/-6)*10<3> m<2>/kg. According to the invention, the heat conductivity coefficient of the sidewall rubber material is improved, so that the tire rapidly dissipates a large amount of heat accumulated for a long time through the sidewall rubber with high heat transfer, the thermal aging process of the internal rubber material and a framework material of the tire is shortened, and the influence of thermal aging on the service life of the tire is reduced.
本发明涉及一种高传热轮胎胎侧胶橡胶组合物。其原料组分按重量份计,包括:所述组合物原料组分按重量份计,包括:20~70份天然顺式1,4‑聚异戊二烯橡胶,30~80份顺式1.4丁二烯橡胶,20‑40份HAF炭黑。所述HAF炭黑,其吸碘值在82±5g/kg,DBP吸收值在(102±5)×10‑5m3/kg,氮吸附比表面积在(75±6)×103m2/kg。本发明在胎侧胶料的导热系数方面进行提高,使轮胎通过高传热的胎侧橡胶将长时间积累的大量热量快速的散热出去,缩短轮胎内部胶料及骨架材料的热老化历程,降低热老化对轮胎寿命的影响。
High-heat-transfer tire sidewall rubber composition
一种高传热轮胎胎侧胶橡胶组合物
2021-07-20
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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