▎ 摘　　要

NOVELTY - Composite dust-type graphene nano-modified nano-fibers comprise acetate tow, alginic acid, hydrochloric acid, ethylene-vinyl acetate co-polymer, high polyethylene, non-active agent, foam aluminum oxide, nano-cerium dioxide powder, polylactic acid chitosan, nano graphene, conductive mica powder, nano-conductive graphite powder, trimer of polyisocyanate, polytetrafluoroethylene fiber, sea mud, polyvinyl acetate, tung oil, waste syrup, sodium lauroyl sarcosinate, fir glue, asbestos fiber, additive and water. USE - Used as composite dust-type graphene nano-modified nano-fibers. ADVANTAGE - The nano-fibers have dual functions of absorbing aerosol and volatile organic matter; is biodegradable and environmental-friendly; utilizes chitosan as a positively charged molecule, which can adsorb negatively charged bacterial spot, thus it has bactericidal function, and improved pore size and the specific surface area of the composite adsorbent membrane. DETAILED DESCRIPTION - Composite dust-type graphene nano-modified nano-fibers comprise 15-20 pts. wt. acetate tow, 20-30 pts. wt. alginic acid, 1-2 pts. wt. hydrochloric acid, 20-25 aprt ethylene-vinyl acetate co-polymer, 8-10 pts. wt. high polyethylene, 5-8 pts. wt. non-active agent, 8-10 pts. wt. foam aluminum oxide, 5-8 pts. wt. nano-cerium dioxide powder, 15-20 pts. wt. polylactic acid chitosan, 10-15 pts. wt. nano graphene, 0.3-0.5 pts. wt. conductive mica powder, 0.2-0.4 pts. wt. nano-conductive graphite powder, 0.8-1 pts. wt. trimer of polyisocyanate, 1-2 pts. wt. polytetrafluoroethylene fiber, 8-12 pts. wt. sea mud, 5-10 pts. wt. polyvinyl acetate, 4-6 pts. wt. tung oil, 3-6 pts. wt. waste syrup, 1-2 pts. wt. sodium lauroyl sarcosinate, 3-5 pts. wt. fir glue, 4-8 pts. wt. asbestos fiber, 6-8 pts. wt. additive and water. The nano-active agent is prepared by mixing magnesia oxide, aluminum oxide, silicon nitride and boron nitride in a mass ratio of 1:2:3:1. The additive is prepared by dispersing magnesium aluminum hydrotalcite in deionized water to remove carbon-dioxide, to obtain slurry, slowly adding excess sodium dihydrogen phosphate dehydrate solution in water to dissolve, heating, stirring, adjusting the pH to 3.7 with acetic acid, carrying out reaction under reflux temperature for 3 hours, naturally cooling, washing the product with deionized water, and filtering until the filtrate pH reaches 7, and drying. The nano-graphene is prepared by adding concentrated sulfuric acid to graphene, carrying out low temperature stirring at -20 degrees C to -10 degrees C for 5-12 hours, stirring for 5-12 hours at 0-5 degrees C, adding potassium permanganate to carry out oxidizing reaction, to obtain graphite oxide solution, directly adding CTAB, to obtain modified graphite oxide solution, flocculating and modifying graphite oxide with CTAB, filtering the modified graphite oxide solution, washing and carrying out vacuum drying at 50 degrees C for 24 hours. An INDEPENDENT CLAIM is also included for producing nano-fiber, comprising (i) taking alginic acid and hydrochloric acid, and adding deionized water (6-10 times), heating to 100-120 degrees C, stirring uniformly, adding acetate fiber bundles to maintain the heating temperature while continuously stirring uniformly for 20-30 minutes, to obtain alginic acid fiber solution, adding the remaining raw materials, mixing, crushing and grinding, then adding waste syrup, sodium lauroyl sarcosinate, additive and water and stirring uniformly to obtain alginate-based fibrous liquid mixture; (ii) adding alginate-based fibrous liquid mixture, and stirring uniformly at high temperature of 90-100 degrees C, to obtain substrate; (iii) mixing fir gum, tung oil and polyvinyl acetate at 80-90 degrees C, and stirring at a rate of 800-1000 rotations/minute for 5-10 minutes, uniformly spraying the material onto the surface of the substrate prepared in step (ii), and insulating at 100-120 degrees C for 2-4 hours, mixing polylactic acid chitosan and nano-graphene, carrying out magnetic stirring under rapid mixing for 5-6 hours, to obtain uniform and stable transparent solution, spraying high temperature sprayed layer between the layers of graphene by electrospray process and loading onto the substrate and cooling.