▎ 摘　　要

NOVELTY - Ethylene-vinyl acetate material comprises 12-18 wt.% mixed flame retardant, 2.5-3.5 wt.% foaming agent, 0.5-1.0 wt.% crosslinking agent, 0.8-1.2 wt.% stearic acid, 0.2-0.3 wt.% zinc stearate, 6-10 wt.% raw vermiculite powder, and rest is ethylene-vinyl acetate. USE - Ethylene-vinyl acetate material with high buoyancy, high temperature resistance and impact automatic expansion. ADVANTAGE - The small amount of three-dimensional porous double-cross-linked polyaniline/graphene composite dry gel is added to the mixed flame retardant, and the dry gel has a three-dimensional double-cross-linked structure, and the polyaniline grows on the graphene sheet, so that polyaniline on the sheet is cross-linked with each other, and at the edge of the sheet is interwoven with each other, and form a three-dimensional double cross-linked structure together with graphene, which provides better foaming effect, greater buoyancy, after falling into the water, and easier for the material to automatically expand when it is impacted. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing EVA material, which involves: (1) putting EVA, white corundum and raw vermiculite powder into a torque rheometer to be melted and mixed for 15-25 minutes, then adding the rest raw materials, and continuously mixing for 30-45 minutes; (2) placing the prepared mixed material for 36-48 hours, then placing the mixed material into an open mill for mixing for 15-25 minutes, and then pressing the mixed material into 3-5mm sheet; (3) placing the sheet into preheated flat vulcanizing machine, and carrying out die pressing foaming for 4-6 minutes at 155degrees Celsius under 25-35 MPa.