▎ 摘　　要

NOVELTY - Graphene oxide/carbon black rubber nanocomposite material comprises 100 pts. wt. diene-based rubber substrate, 0.5-5 pts. wt. graphene oxide, 30-70 pts. wt. hard carbon black with average particle size, 1-10 pts. wt. plasticizer, 6-10 pts. wt. activator, 0.5-4 pts. wt. anti-aging agent, 1-4 pts. wt. vulcanization accelerator, 1-6 pts. wt. insoluble sulfur, and graphene oxide modifier. Diene-based rubber substrate is mixed glue comprising natural rubber, styrene-butadiene rubber and butadiene rubber. The graphene oxide modifier is isocyanatopropyltriethoxysilane or 3-aminopropyltriethoxysilane. USE - The nanocomposite material is used as tire bead-filler (claimed). ADVANTAGE - The nanocomposite material has excellent processing performance; greatly reduces dynamic heat generation; and improves the usage life of tire. DETAILED DESCRIPTION - Graphene oxide/carbon black rubber nanocomposite material comprises 100 pts. wt. diene-based rubber substrate, 0.5-5 pts. wt. graphene oxide, 30-70 pts. wt. hard carbon black with average particle size of 11-30 nm, 1-10 pts. wt. plasticizer, 6-10 pts. wt. activator, 0.5-4 pts. wt. anti-aging agent, 1-4 pts. wt. vulcanization accelerator, 1-6 pts. wt. insoluble sulfur, and graphene oxide modifier. Diene-based rubber substrate is mixed glue comprising natural rubber, styrene-butadiene rubber and butadiene rubber according to mass ratio of 4:(1-9):1. The graphene oxide modifier is isocyanatopropyltriethoxysilane (IPTS) or 3-aminopropyltriethoxysilane (KH550). An INDEPENDENT CLAIM is also included for preparing the nanocomposite material, comprising (i) dispersing graphene oxide powder in deionized water, where the concentration of graphene oxide is 0.1-0.4 mg/ml, carrying out ultrasonic treatment under ultrasonic power of 500-1000 W for 30-60 minutes, and obtaining graphene oxide suspension system; (ii) adding natural rubber emulsion into the graphene oxide suspension system, continuously carrying out ultrasonic processing for 10-20 minutes, flocculating, drying, washing, and drying to obtain masterbatch, and then adding flocculation latex into 0.5-1.5 wt.% aqueous calcium chloride solution; and (iii) uniformly mixing the masterbatch with natural rubber, styrene-butadiene rubber or butadiene rubber, graphene oxide coupling agent, activator, anti-aging agent, hard carbon black, plasticizer, vulcanization accelerator and insoluble sulfur to obtain rubber composite material.