▎ 摘　　要

NOVELTY - A high-flame-retardant graphene modified polyvinyl chloride material comprises 162-208 pts. wt. polyvinyl chloride material, 53-70 pts. wt. graphene, 13-19 pts. wt. polyether polyol, 7-12 pts. wt. vinyl tris( beta -methoxyethoxy)silane, 9-15 pts. wt. ethyl vinyl acetate resin, 7-11 pts. wt. dibutyl phthalate, 9-14 pts. wt. modified starch, 4-8 pts. wt. diatomaceous earth, 2-5 pts. wt. wollastonite, 2-4 pts. wt. titanium dioxide, 2-3 pts. wt. medical stone powder, 4-6 pts. wt. boron fibers, 0.3-0.5 pt. wt. ultraviolet absorber and 1.3-1.6 pts. wt. flame retardant. USE - High-flame-retardant graphene modified polyvinyl chloride material is used for hotel, restaurant and building decoration. ADVANTAGE - The method enables graphene modified polyvinyl chloride material has excellent mechanical property, toughness, abrasion resistance, impact resistance, thermal stability and flame retardant. DETAILED DESCRIPTION - A high-flame-retardant graphene modified polyvinyl chloride material comprises 162-208 pts. wt. polyvinyl chloride material, 53-70 pts. wt. graphene, 13-19 pts. wt. polyether polyol, 7-12 pts. wt. vinyl tris( beta -methoxyethoxy)silane, 9-15 pts. wt. ethyl vinyl acetate resin, 7-11 pts. wt. dibutyl phthalate, 9-14 pts. wt. modified starch, 4-8 pts. wt. diatomaceous earth, 2-5 pts. wt. wollastonite, 3-6 pts. wt. zinc oxide, 2-4 pts. wt. titanium dioxide, 2-3 pts. wt. medical stone powder, 4-6 pts. wt. boron fibers, 5-8 pts. wt. polyamide fibers, 3-5 pts. wt. glass fibers, 6-12 pts. wt. polypropylene wax, 2-3 pts. wt. ethylene-ethyl acrylate copolymer, 3-6 pts. wt. polyvinyl acetate emulsion, 4-7 pts. wt. dimethyl silicone oil, 1-2 pts. wt. triethanolamine, 0.4-0.8 pt. wt. surfactant, 0.3-0.6 pt. wt. initiator, 0.3-0.5 pt. wt. crosslinking agent, 0.2-0.3 pt. wt. catalyst, 0.1-0.2 pt. wt. accelerator, 0.3-0.5 pt. wt. plasticizer, 0.4-0.6 pt. wt. toughening agent, 0.2-0.5 pt. wt. dispersant, 0.3-0.4 pt. wt. tackifier, 0.8-1.2 pts. wt. curing agent, 0.7-1.2 pts. wt. antibacterial agent, 0.3-0.6 pt. wt. antioxidant, 0.2-0.3 pt. wt. light stabilizer, 0.3-0.5 pt. wt. ultraviolet absorber and 1.3-1.6 pts. wt. flame retardant. The modified starch comprises 86-118 pts. wt. cassava starch, 10-14 pts. wt. isoamyl acetate, 8-12 pts. wt. dimethylacetamide, 2-4 pts. wt. epichlorohydrin, 1.8-3.2 pts. wt. urea, 1-2 pts. wt. potassium hydroxide, 0.4-0.7 pt. wt. 2,5-dimethyl-2,5-bis(benzoylperoxy)hexane, 0.1-0.2 pt. wt. platinum catalyst, 0.2-0.3 pt. wt. organotin stabilizer, 0.4-0.6 pt. wt. polyoxyethylene polyoxypropylene pentaerythritol ether, 0.3-0.5 pt. wt. propyl trimethoxysilane and 0.2-0.4 pt. wt. boric acid. The surfactant comprises TRITONCF-10 (RTM: benzyl-polyethylene glycol tert-octylphenyl ether). The initiator comprises dibenzoyl peroxide. The crosslinking agent comprises methacrylamide. The catalyst comprises tris(dimethylaminopropyl)hexahydrotriazine. The accelerator comprises colorless cobalt. The plasticizer comprises tricaprylyl citrate. The toughening agent comprises polypropylene rubber. The dispersant comprises dispersant NC. The flame retardant comprises 45-62 pts. wt. tributoxyethyl phosphate, 18-32 pts. wt. tris(2,4-di-tert-butylphenyl)phosphite, 15-22 pts. wt. ammonium polyphosphate, 10-18 pts. wt. pentaerythritol, 9-14 pts. wt. urea, 6-10 pts. wt. aluminum hydroxide, 8-12 pts. wt. antimony trioxide, 4-8 pts. wt. manganese oxide, 6-12 pts. wt. activated clay, 1.2-1.5 pts. wt. penetrant and 0.6-0.9 pt. wt. synergist. The high-flame-retardant graphene modified polyvinyl chloride material is prepared by crushing graphene, sieving graphene to 300-500 mesh, to obtain powder, processing powder with magnetic field strength of 5800-6200 GS, ultrasonic power of 300-500 W, 40-50 degrees C and 200-300 rpm for 20-35 minutes, to obtain graphene powder, adding surfactant to graphene powder and activating mixture at 56-72 degrees C and 100-130 rpm for 1-1.5 hours, to obtain activated graphene powder, adding polyvinyl chloride material, polyether polyol, vinyl tris( beta -methoxyethoxy)silane, ethyl vinyl acetate resin, dibutyl phthalate, diatomite, wollastonite, zinc oxide, titanium dioxide, medical stone powder, boron fibers, polyamide fibers, glass fibers, polypropylene wax, ethylene-ethyl acrylate copolymer, polyvinyl acetate emulsion, dimethyl silicone oil, triethanolamine, initiator, crosslinking agent, catalyst, accelerator, plasticizer, toughener, dispersant and thickener to activated graphene powder under nitrogen protection, treating mixture at microwave power of 182-264 W, 123-138 degrees C and 300-500 rpm for 2.1-3.7 hours, to obtain mixture (m1), adding modified starch, hardener, antibacterial compound, antioxidant, light stabilizer, ultraviolet absorber and flame retardant to mixture (m1) and stirring mixture at 70-75 degrees C and 100-200 rpm for 1-1.5 hours to obtain mixture (m2), preparing modified starch by adding isoamyl acetate with concentration of 5-8%, dimethylacetamide, 2,5-dimethyl-2,5-bis(benzoylperoxy)hexane and platinum catalyst to tapioca pulp with concentration of 18-26 degrees Be and pH of 3.4-3.8, stirring at 52-56 degrees C and 90-130 rpm and crosslinking grafting mixture for 2.4-3 hours, to obtain slurry (s2), adding gelatin to slurry (s2), adjusting pH value to 9.5-9.8, adding epichlorohydrin, urea, propyltrimethoxysilane and boric acid, stirring mixture at 61-65 degrees C and 100-160 rpm, crosslinking reacting mixture for 1.2-1.6 hours to obtain slurry (s3), adding organotin stabilizer to slurry (s3), adjusting pH to 8.8-9.1, heating mixture at 76-79 degrees C, gelatinizing mixture for 42-50 minutes, cooling to 35-38 degrees C, adding polyoxyethylene polyoxypropylene pentaerythritol ether and stirring at 80-100 rpm for 12-14 minutes to obtain modified starch, preparing flame retardant by adding ammonium polyphosphate and 200-265 pts. wt. water to microwave reactor, stirring mixture at 400-600 rpm for 5-9 minutes to obtain mixture (m1), adding tributoxyethyl phosphate, tris(2,4-di-tert-butylphenyl)phosphite, pentaerythritol, urea, aluminum hydroxide, antimony trioxide, manganese oxide, activated clay, penetrant and synergist to mixture (m1), stirring mixture at 300-500 rpm, 160-200 W and 84-92 degrees C for 1.8-2.5 hours to obtain mixture (m2), cooling mixture (m2) to room temperature, filtering precipitate, centrifugally drying at 3000-5000 rpm to from product with water content of 3.2% or less, preparing flame retardant by feeding mixture (m2) to twin-screw hot-air type extruder granulator and granulating mixture at 142-148 degrees C.