Method of processing a rubber composition, rubber composition and pneumatic tire.

摘要

The present invention is directed to a method of processing a rubber composition, the method comprising the steps of:
mixing at least one diene-based elastomer together with a filler to a final temperature of 145ºC to 165ºC in a first mixing step to form a first mix;
cooling the mix to a temperature of 60 ºC to 90ºC;
mixing the first mix in a further mixing step with 0.1 to 10 parts by weight, per 100 parts by weight of elastomer, of aramid fibers having a length ranging from 0.5 mm to 30 mm and having a thickness ranging from 1 microns to 35 microns and comprising 3 to 40 percent by weight, based on the weight of the aramid, of a peroxide radical initiator in a mixing step to a final temperature of 145ºC to 165ºC to form a second mix; and
mixing the second mix with curatives in third mixing step.