▎ 摘　　要

NOVELTY - Rubber composition comprises rubber matrix and reinforcing agent. The rubber matrix includes natural rubber, butadiene rubber and trans polyisoprene. The reinforcing agent includes modified aramid pulp, graphene and carbon black. The surface of the modified aramid pulp contains hydroxyl group and carboxyl group. USE - Rubber composition used in air cavity rubber pad of air compressor for fish tank (claimed). ADVANTAGE - The rubber composition has excellent material mechanical properties, good processing process performance, Excellent fatigue resistance, high temperature resistance and anti-aging performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing rubber composition, which involves: (a)pre-mixing natural rubber and modified aramid pulp to obtain premixed rubber; (b) mixing premixed rubber, butadiene rubber, trans polyisoprene and reinforcing agent for the first mixing; and (c) parking after degluing to obtain the masterbatch, where the pre-mixing temperature is 110-125℃, and the pre-mixing time is 1-2 minutes, the first mixing temperature is 110-125℃, the first mixing time is 3-5 minutes, and the parking time is 4-8 hours.