▎ 摘　　要

NOVELTY - Preparing graphene modified fluorine rubber involves obtaining graphene carbon black alumina composite particles by mixing graphene and carbon black, then pre-treating rubber, adding graphene carbon black into the rubber during pre-treating process of the rubber, and then co-precipitating graphene carbon black alumina composite particles with aluminum hydroxide. Alumina composite particles are added in an amount of 10-30 parts of the graphene carbon black alumina composite particles per 100 parts of fluorine rubber. USE - Method for preparing graphene modified fluorine rubber (claimed). ADVANTAGE - The method enables to prepare graphene modified fluorine rubber has excellent performance, tensile strength is improved by more than 20% and abrasion volume is reduced by more than 30%. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) method for preparing graphene carbon black alumina composite particles, which involves dispersing graphene oxide into deionized water, adding surfactant and polyacrylamide solution, then heating to 60-80 degrees C; adding carbon black liquor after cleaning and adding sodium carboxymethyl cellulose; mixing the solution and adding sodium aluminate solution and adjusting the pH value to 10-12 to obtain suspension; filtering, washing and calcining mixture at 200-300 degrees C for 1-6 hours to obtain final product; and (2) producing a modified fluorine rubber, which involves putting fluorine rubber into open mill and rolling the mixture for 10-15 minutes; maintaining plasticizing temperature of front roller of open mill at 55-60 degrees C; placing fluorine rubber into internal mixer, and adding 0.1-3 pts. wt. microcrystalline wax, 5-25 pts. wt. magnesium oxide, 1-5 pts. wt. calcium hydroxide and 10-30 pts. wt. graphene-carbon black alumina composite particles; adding 0.5-2 pts. wt. bisphenol AF and 0.1-0.5 pts. wt. BPP for vulcanization at vulcanization temperature of 150-180 degrees C for 0.5-1 hours; and raising temperature to 200-210 degrees C for 12-24 hours and cooling to below 60-80 degrees C to obtain final product.