Patent ID: 9328221
Filing Date: 2016-05-03
CPC Classification: C08J,C08K,C08L

Claim Text:
1. A method for preparing a graphene oxide/white carbon black/rubber nanocomposite material, the method comprising: a) dispersing graphene oxide in deionized water and then ultrasonicating at 0.1-1000 kw for 10 min-6 h to obtain a hydrosol of graphene oxide containing 0.01-20 wt % of graphene oxide; b) adding white carbon black and a coupling agent, or white carbon black modified with a coupling agent, into the hydrosol of graphene oxide of a) and then ultrasonicating at 0.1-1000 kw for 10 min-6 h or stirring at 50-10000 r/min for 30 min-12 h to obtain a hydrosol of graphene oxide/white carbon black; c) adding a surfactant into the hydrosol of graphene oxide/white carbon black of b) and ultrasonicating at 0.1-1000 kw for 10 min-6 h or stirring at 50-10000 r/min for 30 min-12 h to obtain a pre-treated hydrosol of graphene oxide/white carbon black; d) mixing the hydrosol of graphene oxide/white carbon black of b), or the pre-treated hydrosol of graphene oxide/white carbon black of c), with a rubber latex and then ultrasonicating at 0.1-1000 kw for 10 min-6 h or stirring at 50-10000 r/min for 30 min-12 h to obtain a stable mixture emulsion; and e) adding a flocculant into the mixture emulsion of d) to induce flocculation and stirring at 50-10000 r/min to obtain floc, and then drying the floc at 60-300° C. to remove water therefrom to obtain a graphene oxide/white carbon black/rubber nanocomposite material; wherein: when temperature during ultrasonication of a)-d) exceeds 80° C., stopping ultrasonication and stirring mixtures at 50-500 r/min for 5-30 min until the temperature decreases to allow resuming ultrasonication; and temperatures during a)-d) are below 100° C.