▎ 摘 要
NOVELTY - Graphene/polyvinyl chloride composite packaging material comprises 1-3 pts. wt. graphene, 30-50 pts. wt. polyvinyl chloride, 10-15 pts. wt. maleic anhydride grafted polystyrene resin, 5-10 pts. wt. alkaline solution, 2-5 pts. wt. acidic solution, 1-3 pts. wt. modifier, 3-5 pts. wt. oxidant, 2-5 pts. wt. tritolyl phosphate, 0.2-0.5 pts. wt. initiator, and appropriate amount of deionized water. USE - Graphene/polyvinyl chloride composite packaging material. ADVANTAGE - The graphene/polyvinyl chloride composite packaging material has high compatibility, small environmental pollution, simple preparation process and low cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a graphene-polyvinyl chloride composite packaging material, which involves: (A) preparing modified graphene by dissolving graphene in deionized water, dispersing and dissolving it by ultrasonic wave, pouring it into a sodium hydroxide solution, performing ultrasonic dispersion and adding sulfurous acid solution to neutralize the sodium hydroxide; (B) adding potassium permanganate solution, stirring and reacting it for 30-60 minutes, adding hydrogen peroxide, stirring, filtering and drying it to obtain primary modified graphene; (C) mixing primary modified graphene with hydroxymethyl cellulose, polydimethylsiloxane and triethylenetetramine, putting it in a closed bottle, putting it in a muffle furnace, heating it at 180-220 degrees C for 45-60 minutes and cooling it down to obtain modified graphene; (D) preparing graphene/polyvinyl chloride composite material by mixing polyvinyl chloride, maleic anhydride grafted polystyrene resin, tritolyl phosphate and modified graphene uniformly, adding it into mixer, heating and stirring it for 30-45 minutes at a temperature of 50-70 degrees C to obtain mixture A; (E) mixing mixture A and initiator, heating it to 150-180 degrees C, stirring it for 1-3 hours under the stirring condition of 350-400 revolutions per minute to obtain the mixture B; and (F) feeding mixture B into a mixer, melting it at 110-130 degrees C, passing it into the extruder for extrusion, and cooling it to obtain final product.