The invention discloses a tire sidewall rubber composition with low hysteresis loss and improved appearance, and a preparation method thereof. The rubber composition comprises natural rubber and butadiene rubber as main raw materials, carbon black as a reinforcing agent, sidewall resin, protective wax for improving appearance, a vulcanizing agent, an accelerant, other auxiliaries and the like. According to the invention, the natural rubber and the carbon black are pre-mixed into the master batch, and the master batch is matched with other components for synergistic effect and mixing, so that the distribution of the carbon black in the natural rubber/butadiene rubber blending proportion is improved, the distribution of the carbon black is more uniform, the flocculation of the rubber material in the parking process is reduced, and the uniformity, fineness and smoothness of the rubber material are improved. The rubber composition provided by the invention has good comprehensive properties such as processability and mechanical properties, and can reduce the compression heat generation and rolling resistance of a sidewall rubber material, improve the thermal aging resistance and fatigue resistance of the sidewall rubber, improve the appearance quality of a tire, enable the surface of the tire to be fine, smooth and flat, and prolong the service life of the tire.

    本发明公开了一种低滞后损失、改善外观的轮胎胎侧橡胶组合物及其制备方法,该橡胶组合物包括:天然橡胶、顺丁橡胶为主要原料,以炭黑为补强剂,加以胎侧树脂、改善外观防护蜡、硫化剂、促进剂和其他助剂等。本发明将天然橡胶和炭黑预混炼成母炼胶后,再配合其他组分协同作用,并进行混炼,改善炭黑在天然橡胶/顺丁橡胶并用比例中的分配,使得炭黑分布更均匀,减少胶料停放过程的絮凝,改善胶料均一性和细腻光滑性。本发明所述橡胶组合物加工性能和力学性能等综合性能好,能够降低胎侧胶料的压缩生热和滚动阻力,提高胎侧胶的耐热老化性能和耐疲劳性能,改善轮胎的外观质量,使其表面细腻光滑平整,延长轮胎的使用寿命。


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    Title :

    Tire sidewall rubber composition with low hysteresis loss and improved appearance, and preparation method thereof


    Additional title:

    一种低滞后损失、改善外观的轮胎胎侧橡胶组合物及其制备方法


    Contributors:
    XIE ZHIGUO (author) / FAN RULIANG (author) / DONG DONG (author) / ZHANG NING (author)

    Publication date :

    2021-06-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen / B60C VEHICLE TYRES , Fahrzeugreifen / C08J Verarbeitung , WORKING-UP / 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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