The invention relates to a solution polymerized styrene-butadiene rubber composition for green tire treads and a preparation method thereof, the composition comprises dry glue of solution polymerized styrene-butadiene rubber cement and high-dispersion type nano white carbon black in a mass ratio of 1: (0.5-0.9), and the surface of the high-dispersion type nano white carbon black is coated with a light rare earth element separant. The light rare earth element separant is prepared by the following steps: enabling light rare earth metal oxide and unsaturated carboxylic acid ligand to generate unsaturated carboxylic acid soap, and then carrying out graft polymerization on the unsaturated carboxylic acid soap and a linear chain segment [-PS-B-] n synthesized by taking lithium alkyl as an initiator and styrene and butadiene as reaction monomers under the initiation action of peroxide, the problem that the nano white carbon black is agglomerated again after being placed for a long time is effectively solved, the problems that the binding force between the nano white carbon black and a solution polymerized styrene-butadiene rubber matrix is poor, and dispersion is uneven are solved, and the composition is endowed with the properties of wet skid resistance, low rolling resistance and high strength.

    本发明涉及一种绿色轮胎胎面用溶聚丁苯橡胶组合物及其制备方法,组合物包括质量比为1:0.5~0.9的溶聚丁苯胶浆的干胶和高分散型纳米白炭黑,所述高分散型纳米白炭黑的表面包覆有一种轻稀土元素隔离剂,所述轻稀土元素隔离剂是由轻稀土金属氧化物与不饱和羧酸配体生成不饱和羧酸皂,然后与以烷基锂为引发剂,以苯乙烯和丁二烯为反应单体合成出的线性链段[‑PS‑B‑]n,在过氧化物引发作用下进行接枝聚合后制得;该发明不仅有效地解决了纳米白炭黑在长期放置时又再次发生团聚的问题,而且还解决了纳米白炭黑与溶聚丁苯橡胶基体结合力差且分散不均的问题,赋予了该组合物抗湿滑、低滚阻、高强度的性能。


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    Title :

    Solution polymerized styrene-butadiene rubber composition for green tire tread and preparation method of solution polymerized styrene-butadiene rubber composition


    Additional title:

    一种绿色轮胎胎面用溶聚丁苯橡胶组合物及其制备方法


    Contributors:
    XU DIANHONG (author) / LI BO (author) / ZHAO YAN (author) / LI FUCHONG (author) / MENG LINGKUN (author) / WEI XULING (author) / ZHOU LEI (author)

    Publication date :

    2023-05-19


    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 / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS