| abstract |
The invention belongs to the technical field of materials and particularly relates to a method for in-situ modification of ABS (acrylonitrile-butadiene-styrene) resin by graphene. The method comprises the following steps: (1) preparing a PB emulsion from butadiene by virtue of emulsion polymerization; (2) then grafting styrene, polymerizing acrylonitrile, agglomerating and drying to obtain ABS aggregates; (3) preparing SAN (styrene-acrylonitrile) particles by bulk polymerization or suspension polymerization; and (4) mixing and granulating the ABS aggregates and the SAN particles. Graphene can be added randomly in the steps (1), (2) and (3) to obtain a graphene modified ABS resin composite material by virtue of in-situ modification. The method is simple in technical process, easy to implement and suitable for industrialized production. The obtained composite material is remarkably enhanced in heat conductivity, electric conductivity and mechanical property and has a considerable economic value, thereby creating a new path for graphene modified ABS resin. |