METHOD FOR PREPARING HIGH PERFORMANCE TREAD RUBBER BY FILLER SILYLATION REACTION CATALYZED IN-SITU BY IONIC LIQUID

摘要

Disclosed is a method for preparing a high performance tread rubber by a filler silylation reaction catalyzed in-situ by an ionic liquid. The method comprises: sequentially adding a rubber, a filler, a silane and an ionic liquid to an open mill or a mixer and mixing to obtain a mixed rubber; performing high temperature re-milling on the mixed rubber; adding, at room temperature, a vulcanization packet and an aging inhibitor to the re-milled mixed rubber; vulcanizing the mixed rubber, and obtaining a vulcanized rubber. The method of the present invention uses the ionic liquid as a catalyst to silylate the filler surface, thus effectively facilitating dispersion of white carbon black, etc., in the rubber, and improving rubber-filler interface performance, greatly reducing silane usage, greatly improving tread rubber material dynamic performance, reducing rolling resistance and dynamic heat generation, having a simple process without adding an additional processing device and step, and having favorable prospects in the preparation of high performance tires.