▎ 摘　　要

NOVELTY - Magnetic plastic type graphene functional outer wall material includes 15-20 pts. wt. polylactic acid chitosan, 10-15 pts. wt. nano graphene, 20-30 pts. wt. magnetic powder, 5-10 pts. wt. sodium silicate, 10-20 pts. wt. magnetic iron oxide, 4-8 pts. wt. magnetic alumina, 30-35 pts. wt. pitch-based carbon fiber powder, 5-7 pts. wt. non-halogenated organic phosphinic acid ester, 8-10 pts. wt. hexamethylenetetramine, 2-4 pts. wt. trimethylpentyltriethoxysilane, 0.3-0.5 pt. wt. conductive mica powder and 0.2-0.4 pt. wt. nano-conductive graphite powder. USE - Magnetic plastic type graphene functional outer wall material. ADVANTAGE - The product has enhanced mechanical property; can absorb point bacterium negative charge; has sterilization function; has improved porosity and specific surface area; increased efficacy; and can greatly adsorb and remove harmful gases in the exhaust gas and dust material. DETAILED DESCRIPTION - Magnetic plastic type graphene functional outer wall material comprises 15-20 pts. wt. polylactic acid chitosan, 10-15 pts. wt. nano graphene, 20-30 pts. wt. magnetic powder, 5-10 pts. wt. sodium silicate, 10-20 pts. wt. magnetic iron oxide, 4-8 pts. wt. magnetic alumina, 30-35 pts. wt. pitch-based carbon fiber powder, 5-7 pts. wt. non-halogenated organic phosphinic acid ester, 8-10 pts. wt. hexamethylenetetramine, 2-4 pts. wt. trimethylpentyltriethoxysilane, 0.3-0.5 pt. wt. conductive mica powder, 0.2-0.4 pt. wt. nano-conductive graphite powder, 0.8-1 pt. wt. trimer of polyisocyanate, 1-2 pts. wt. PTFE fiber, 8-12 pts. wt. nano titanium dioxide, 1-5 pts. wt. polydopamine, 2-6 pts. wt. polyphosphazene, 12-20 pts. wt. magnetic iron oxide tetroxide particles, 4-8 pts. wt. 2-ethylphosphate, 1-5 pts. wt. polyethyleneimine, 8-12 pts. wt. paraffin wax, 7-13 pts. wt. higher aliphatic alcohol, 5-9 pts. wt. EDTA, 7-13 pts. wt. glass fiber, 6-12 pts. wt. heat stabilizer, 6-12 pts. wt. binder, 1-5 pts. wt. polydimethyldiallylammonium chloride, 8-16 pts. wt. bentonite and 1-5 pts. wt. nano-cerium oxide. The nano graphene is prepared by adding concentrated sulfuric acid to graphite, low temperature stirring at - 20-- 10 degrees C for 5-12 hours, stirring at 0-5 degrees C for 5-12 hours, adding potassium permanganate, oxidizing to obtain graphite oxide solution, adding obtained graphite oxide solution into cetrimonium bromide, flocculating, modifying, filtering, washing and vacuum drying at 50 degrees C for 24 hours. An INDEPENDENT CLAIM is included for preparation of magnetic plastic type graphene functional outer wall material comprising: (A) mixing magnetic powder, sodium silicate, magnetic iron oxide, magnetic alumina, nano-titanium dioxide and polydopamine and pulverizing into 100-200 mesh to obtain component A; (B) taking the remaining heat removal stabilizer, adhesives, polylactic acid chitosan and other components of nano graphene and pulverizing into 100-200 mesh to prepare component B; (C) adding components A and B to heat stabilizer, adding adhesive, mixing and stirring at 45-55 degrees C for 60-80 minutes with speed of 500-600 revolutions/minute to prepare component C; (D) pulverizing component C, mixing, adding nano silica gel with volume fraction of 3-5%, mixing, placing into the mold, vibrating, steaming at room temperature, curing, demolding, carrying out steam high-pressure curing, transferring the resulting solid to the curing device, curing at 170-180 degrees C for 2 hours with pressure of 0.75 MPa, placing substrate in a casting machine, pressing, melting at 160-190 degrees C for 3-5 hours and cooling; and (E) releasing after 2 days, watering for 7 days, adding polylactic acid chitosan and nano-graphene, mixing, magnetically stirring for 5-6 hours to form a uniform and stable transparent solution and adding graphene between the layer and the layer by electrospray spray to complete the prefabrication process of the outer wall.