▎ 摘　　要

NOVELTY - Method for preparing acrylonitrile styrene acrylate film, involves (a) taking main material, acrylonitrile styrene acrylate rubber powder, thermoplastic elastomer, graphene powder, white mica powder, hollow glass beads, rutile titanium dioxide, quartz sand powder, pigment, lubricating dispersant, antioxidant, UV absorber and light stabilizer, (b) sequentially adding weighed acrylonitrile styrene acrylate rubber powder, thermoplastic elastomer, calcium carbonate powder, rutile titanium dioxide, graphene powder, mica powder, hollow glass beads, quartz sand powder, pigment, lubricating dispersant, antioxidant, UV absorber and light stabilizer to main material, adding obtained mixture to high-speed stirrer for uniformly stirring, adding obtained mixture to twin-screw extruder for melting and co-polymerization, and extruding, and (c) accurately metering acrylonitrile styrene acrylate particles using metering pump, extruding, casting by casting roller, and winding. USE - Method for preparing acrylonitrile styrene acrylate film used for outdoor use. ADVANTAGE - The acrylonitrile styrene acrylate film has high weather resistance, impact resistance and acid and alkali resistance, guarantees the color difference Delta E less than or equal to 5 within ten years, is light weight, and ensures excellent physical and chemical properties, such as high strength, waterproof and moisture-proof, anti-corrosion and flame-retardant, sound insulation and heat insulation effect. DETAILED DESCRIPTION - Method for preparing acrylonitrile styrene acrylate film, involves (a) taking 50-65 pts. wt. main material, 25-35 pts. wt. acrylonitrile styrene acrylate rubber powder, 15-25 pts. wt. thermoplastic elastomer, 7-12 pts. wt. graphene powder, 5-10 pts. wt. white mica powder, 3-5 pts. wt. hollow glass beads, 3-5 pts. wt. rutile titanium dioxide, 1-2 pts. wt. quartz sand powder, 3-4.5 pts. wt. pigment, 0.5-1.5 pts. wt. lubricating dispersant, 0.3-0.5 pt. wt. antioxidant, 0.1-0.2 pt. wt. UV absorber and 0.1-0.3 pt. wt. light stabilizer, where the main material comprises acrylate, acrylonitrile and styrene graft copolymer, the pigment comprises titanium dioxide, organic and inorganic pigment, the lubricating dispersant comprises ethylenebis(stearamide), the antioxidant comprises pentaerythritol tetrakis(3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate) (DF-1010), the UV absorber comprises (2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenol) (DF-UV 328), and the light stabilizer comprises DF-770, (b) sequentially adding weighed acrylonitrile styrene acrylate rubber powder, thermoplastic elastomer, calcium carbonate powder, rutile titanium dioxide, graphene powder, mica powder, hollow glass beads, quartz sand powder, pigment, lubricating dispersant, antioxidant, UV absorber and light stabilizer to main material, adding obtained mixture to high-speed stirrer for uniformly stirring for 25-35 minutes, adding obtained mixture to twin-screw extruder for melting and co-polymerization, and extruding to form acrylonitrile styrene acrylate strip using twin-screw extruder to form acrylonitrile styrene acrylate particles, (c) accurately metering acrylonitrile styrene acrylate particles using metering pump, extruding acrylonitrile styrene acrylate particles from machine head mold, casting by casting roller, and flattening and cooling using guide roller, in intermediate process, accurately measuring the thickness by thickness gauge, performing edge cutting process, and winding by drawing process and winding machine to obtain acrylonitrile styrene acrylate film coiled material with width of 1.02-1.50 m and thickness of 80-200 mu m. An INDEPENDENT CLAIM is included for a thermal bonding process for synthetic resin tile, involves pouring mixed PVC resin and light calcium carbonate mixture to conical hopper for drying, passing dried mixture to feeding port above screw extruder using negative pressure pipeline, passing obtained mixture to screw extrusion cabin chamber at 180 degrees C, heating obtained mixture in molten state after heating at 180 degrees C, passing obtained mixture to device, and passing to closed mold cavity of mold, and performing plastic extrusion after mold cavity is filled to form sheet resin, which is synthetic resin tile bottom layer, when the sheet-shaped resin coming out of mold passing through film-covering frame equipped with acrylonitrile styrene acrylate film coiled material, heating obtained acrylonitrile styrene acrylate film and sheet-shaped resin together by traction roller and heat-bonding to surface of sheet-shaped resin, forming uniform coating on surface of sheet resin, and passing sheet resin with coating to molding machine for forming tile-shaped synthetic resin tile after embossing by double rollers.