Rubber component and a modified preparation method and one-SBR composition and preparation method vulcanizates

The present invention provides a preparation method and the modified rubber component and one SBR composition and preparation method vulcanizates. The SBR composition comprising a rubber component blended and modified SBR; SBR in 100 parts by weight of the modified rubber component is 1 to 70 parts; the modifying said rubber component contains rubber particles having a crosslinked structure, and uncrosslinked rubber dispersed therein; having a crosslinked structure wherein rubber particles nitrile rubber particles, the average particle diameter of 50 ~ 200nm, gel content 60% by weight or more; wherein the uncrosslinked styrene-butadiene rubber; rubber particles having a crosslinked structure with the uncrosslinked rubber weight ratio of 80: 20-30: 70. The vulcanized rubber composition SBR rolling resistance, wet skid performance, abrasion resistance can be improved at the same time, can be used to prepare the tread rubber of high performance automobiles.