The invention provides a sidewall rubber composition of an ultralow rolling resistance tire, which is prepared by mixing a plurality of raw materials, and the sidewall rubber composition comprises the following raw materials in parts by mass: 35 to 55 parts of natural rubber, 45 to 65 parts of butadiene rubber, 6.0 to 10.0 parts of bis-(gamma-triethoxysilylpropyl) tetrasulfide, 25.0 to 35.0 parts of low heat generation carbon black and 3.0 to 4.0 parts of insoluble sulfur. The invention further provides a mixing method which comprises first-stage mixing and final mixing. The invention also provides a tire with ultralow rolling resistance. According to the present invention, the rolling resistance of the prepared tire is 7.6-7.7 N/KN, and is reduced by 0.3-0.5 N/KN, such that the tire sidewall rolling resistance is reduced, the requirement of the tire with the ultra-low rolling resistance is achieved, and the Shore A hardness, the 100% stress at definite elongation and other modulus properties of the tire sidewall rubber composition achieve the level of the prior art so as to ensure that the modulus properties are not reduced.
本申请提供了超低滚动阻力轮胎的胎侧橡胶组合物,由多种原料混炼制成,包括以下质量份的原料:35~55份的天然橡胶,45~65份的顺丁橡胶,6.0~10.0份的双‑(γ‑三乙氧基硅基丙基)四硫化物,25.O~35.0份的低生热的炭黑,3.0~4.0份的不溶性硫磺;还提供了混炼方法,包括一段混炼与终炼混炼;还提供了超低滚动阻力轮胎;制成的轮胎的滚动阻力是7.6‑7.7N/KN,降低了0.3‑0.5N/KN,实现了降低胎侧滚动阻力与超低滚动阻力轮胎所需,且胎侧橡胶组合物的邵氏A硬度、100%定伸应力等模量性能达到了现有技术的水平,即保证了模量性能没有降低。
Sidewall rubber composition of ultralow rolling resistance tire, mixing method thereof and ultralow rolling resistance tire
超低滚动阻力轮胎的胎侧橡胶组合物及其混炼方法和超低滚动阻力轮胎
2024-04-02
Patent
Electronic Resource
Chinese
IPC: | C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B29B PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED , Vorbereiten oder Vorbehandeln der zu verformenden Masse / 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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