▎ 摘　　要

NOVELTY - Wallpaper coating comprises non-woven wallpaper base paste and substrate surface is coated with coating paste, and subjected to drying, plasticizing and embossing. The coating paste comprise 80-100 pts. wt. composite aqueous acrylic resin emulsion, 2-3 pts. wt. volcanic rock powder, 0.01-0.02 pts. wt. graphene, 8-10 pts. wt. polylactic acid chip, 0.1-0.2 pts. wt. ethylene bis stearamide and 0.1-0.2 pts. wt. silane coupling agent kh550. USE - Wallpaper coating. ADVANTAGE - The Wallpaper coating has stable emulsion resins performance, does not contain formaldehyde and other chronic volatile toxic compound, smooth and elastic coating, water-resistant, stain-resistant, antibacterial, energy saving, high strength, heat insulation, sound-absorbing, porous, promotes attraction force between substrate, effectively extends life of wallpaper and has purification effect. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) a method for preparing wallpaper coating, which involves mixing and stirring polylactic acid chips, volcanic rock powder, graphite, ethylene bis stearamide and silane coupling agent kh550 to obtain volcanic-polylactic acid composite fiber having length of 80-100 mu m with porous diameter of 30-50 mu m; and mixing volcanic-polylactic acid composite fiber into aqueous acrylic resin for 30-50 minutes, and adding other remaining material and stirred vigorously for 4-5 hours, and then allowed to stand for 30-40 minutes to obtain final product; and (2) a method for preparing aqueous acrylic resin emulsion, which involves using 0.5-0.8 pts. wt. nano-silica, 4-5 pts. wt. cellulose acetate, 12-15 pts. wt. N,N-dimethylformamide, 18-25 pts. wt. butyl acrylate, 15-20 pts. wt. methyl methacrylate, 10-15 pts. wt. acrylate, 5-8 pts. wt. ammonium persulfate, 2-3 pts. wt. emulsifier OP-10, 1-3 sodium dodecyl sulfate, 50-60 pts. wt. ammonia and proper amount of deionized water; stirring and dissolving cellulose acetate into N,N-dimethylformamide, and put into nano-silica solution, and sealing with ultrasonic agitation and dispersion for 3-4 hours to obtain nano-dioxide cellulose acetate solution; putting obtained nano-dioxide cellulose acetate solution into emulsifier OP-10 and sodium dodecyl sulfate in reaction vessel, and adding 10-15 pts. wt. deionized water, and stirring for dissolving and adding and heating butyl acrylate, acrylate, methyl methacrylate and acrylic acid to 70-75 degrees C for 2-3 hours to obtain pre-emulsion; dissolving appropriate amount of ammonium persulfate and ammonia in deionized water, adjusting solution pH to 6.0-7.5, and heating to 65-75 degrees C and adding pre-emulsion dropwise to reaction vessel at dropping rate of 45-60 drops/minute until blue fluorescence is obtained to obtain seed emulsion; and allowing seed emulsion to stand for 15-20 minutes, and adding ammonium persulfate pre-emulsion and placing at 70-75 degrees C for 50-60 minutes, and heating to 75-80 degrees C with vigorous stirring at constant temperature for 1.5-2 hours, and stirring is stopped until emulsion is cooled to below 50 degrees C, and adjusting pH to 7.0 by using aqueous ammonia solution, and then subjected to filtration to obtain final material.