Graphene reinforced PVC pipe and preparation method thereof

The invention belongs to the field of high polymer materials, and particularly relates to a graphene reinforced PVC pipe and a preparation method thereof. The graphene reinforced PVC pipe is prepared from the following components in parts by weight: 100 parts of PVC resin, 3 to 5 parts of calcium-zinc stabilizer, 0.01 to 0.5 part of graphene, 0.5 to 5 parts of chlorinated polyethylene, 0.5 to 2 parts of lubricant, 5 to 25 parts of calcium carbonate and 0.5 to 4 parts of processing aid. The preparation method of the graphene reinforced PVC pipe comprises the following steps: preparing a graphene dispersion liquid; mixing the materials; and extrusion molding. Graphene is dispersed in a mixed solution of water and alcohol through an ultrasonic dispersion method in advance, then the graphene dispersion liquid, PVC and other materials are mixed through a mechanical high-speed mixing method, water and alcohol are volatilized in the mixing process, uniform dispersion of graphene in PVC is achieved, and the agglomera