▎ 摘　　要

NOVELTY - Preparing graphene composite additives for rubber comprises (a) preparing intercalation modified functional products of graphene oxide, sequentially adding graphene oxide filter cake, dispersant, graphene modifier and deionized water to the sand mill, uniformly dispersing by a sand mill, and raising the temperature and reacting for 1 hour to obtain an aqueous dispersion of grafted modified graphene oxide, (b) adding sodium hydroxide solution to the solution in the step (a) to adjust the pH to 8-11, adding zinc-containing source solution and stirring for 10 minutes, reacting at the set temperature for 1 hour, during the process, using 4 mol/l sodium hydroxide as alkali source for titration, adding surfactant, refluxing for 1 hour, adding modified coupling agent, and continuing reacting for 1 hour, (c) filtering the product obtained in step (b), washing using water, drying in an oven at 80 degrees C for 24 hours, obtaining precursor composite after grinding. USE - The method is useful for preparing graphene composite additives for rubber. ADVANTAGE - The method: avoids the phenomenon of secondary stacking of graphene during mechanical mixing; reduces the amount of ordinary zinc oxide; enhances the compatibility with rubber; increases the crosslinking density of vulcanized rubber; maximizes use performance of material; is simple, efficient and suitable for large-scale production; and saves energy. The additive is suitable as activator in rubber production to optimize the vulcanization process. DETAILED DESCRIPTION - Preparing graphene composite additives for rubber comprises (a) preparing intercalation modified functional products of graphene oxide, sequentially adding graphene oxide filter cake, dispersant, graphene modifier and deionized water to the sand mill, uniformly dispersing by a sand mill, and raising the temperature and reacting for 1 hour to obtain an aqueous dispersion of grafted modified graphene oxide, (b) adding sodium hydroxide solution to the solution in the step (a) to adjust the pH to 8-11, adding zinc-containing source solution and stirring for 10 minutes, reacting at the set temperature for 1 hour, during the process, using 4 mol/l sodium hydroxide as alkali source for titration, adding surfactant, refluxing for 1 hour, adding modified coupling agent, and continuing reacting for 1 hour, (c) filtering the product obtained in step (b), washing using water, drying in an oven at 80 degrees C for 24 hours, obtaining precursor composite after grinding, placing the precursor composite in a box furnace evacuated to replace nitrogen, and calcining at high temperature for 2 hours.