▎ 摘　　要

NOVELTY - Tread rubber comprises 80-100 pts. wt. natural rubber, 0-20 pts. wt. butadiene rubber, 0-0.15 pt. wt. peptizer, 5-15 pts. wt. graphene/graphite oxide natural rubber composite masterbatch, 40-45 pts. wt. carbon black, 10-15 pts. wt. silica, 2-3 pts. wt. silane coupling agent, 3.5-4 pts. wt. zinc oxide, 2-3 pts. wt. stearic acid, 3-3.5 pts. wt. antioxidant, 1-2 pts. wt. microcrystalline wax, 1-1.5 pts. wt. sulfur, 1-2 pts. wt. accelerator, and 0.1-0.3 pt. wt. scorch retarder. USE - Tread rubber. ADVANTAGE - The tread rubber has simple preparation, excellent Tread rubber, reduced tire rolling resistance, and long service life. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of tread rubber comprising roll-milling graphene/graphite oxide natural rubber composite masterbatch at distance of 1.3 plus minus 0.15 mm and roll temperature of 70 plus minus 5 degrees C for 3-5 minutes, adding natural rubber, butadiene rubber and peptizer, rolling mixture continuously for 3-5 minutes, mixing uniformly in mixer for 30 plus minus 2 seconds at 100 plus minus 5 degrees C with 60 plus minus 5 revolutions/minute (rpm) speed, adding zinc oxide, stearic acid, mixing for another 20 plus minus 2 seconds, adding carbon black, silica and silane coupling agent, kneading mixture at 150-155 degrees c to obtain matrix gum, dividing matrix gum into 2 portions, mixing first portion in air for 12 hours to obtain mixture (i), mixing second portion with antioxidant and microcrystalline wax for 30 plus minus 2 seconds at 100 plus minus 5 degrees C, adding carbon black, kneading mixture to 145-150 degrees C to obtain mixture (ii), mixing mixtures (i) and (ii) in air for 12 hours, refining mixture in open mill at 90-100 degrees C with mill roll distance of 4 plus minus 0.2 mm, rolling refined mixture for 1-1.5 minutes, adding sulfur, accelerator and scorching retarder, rolling continuously for 1.5-2 minutes, cutting rolled mixture with knife 3 times, adjusting roller to a minimum triangular package 6 times, and rolling 4 times to obtain product.