▎ 摘　　要

NOVELTY - Preparing new plasticizer comprises e.g. (i) dissolving the active carbon and graphene oxide solution in ethanol, ultrasonically dispersing for 25-45 minutes to obtain dispersion A, adding p-toluenesulfonic acid, ultrasonically dispersing for 30-60 minutes to obtain dispersion liquid B, and washing by alcohol, water to obtain composite hydrogel, freezing and drying to obtain composite gas gel, and (ii) adding tri (propylene glycol) glycerol acid diacrylic acid and 1, 4-butanediol into the reactor, stirring and mixing uniformly at 40-60℃, measuring the acid value, adding the composite gas and gel-butyl ether, heating and stirring to 150-170℃ until the first drop of water in the water separator flows out, continuously reacting for 4-8 hours, until the acid value is not reduced, stopping the reaction, cooling to normal temperature, vacuum extracting and distilling to remove n-butyl ether and unreacted cyclohexanol to obtain product A. USE - The new plasticizer is useful in polyvinyl chloride (claimed), and also useful in food packaging, medical appliance, wire, cable, automobile industry, real estate, floor, synthetic leather, various food medicine packaging film and plastic product field. ADVANTAGE - The plasticizer has high esterification efficiency, good plasticizing effect and good migration resistance, is environmentally friendly and pollution-free, and has high tensile strength and elongation, and low migration loss rate. DETAILED DESCRIPTION - Preparing new plasticizer comprises (i) dissolving the active carbon and graphene oxide solution in ethanol, ultrasonically dispersing for 25-45 minutes to obtain dispersion A, adding p-toluenesulfonic acid, ultrasonically dispersing for 30-60 minutes to obtain dispersion liquid B, and washing by alcohol, water to obtain composite hydrogel, freezing and drying to obtain composite gas gel, (ii) adding tri (propylene glycol) glycerol acid diacrylic acid and 1, 4-butanediol into the reactor, stirring and mixing uniformly at 40-60℃, measuring the acid value, adding the composite gas and gel-butyl ether, heating and stirring to 150-170℃ until the first drop of water in the water separator flows out, continuously reacting for 4-8 hours, until the acid value is not reduced, stopping the reaction, cooling to normal temperature, vacuum extracting and distilling to remove n-butyl ether and unreacted cyclohexanol to obtain product A, (iii) adding the product A and lactic acid into the reactor, stirring and mixing uniformly at 40-60℃, measuring the acid value, adding composite gas and gel-butyl ether, heating and stirring at 130-150℃ until the first drop of water in the water separator flows out, continuously reacting for 3-6 hours, until the acid value is not reduced, stopping the reaction, cooling to normal temperature, vacuum extracting and distilling to remove n-butyl ether and impurity, and obtaining the product B, and (iv) slowly dropping acetic anhydride, controlling the reaction temperature at 60-80℃, continuously stirring for 3-5 hours, finishing reaction, vacuum extracting and distilling to remove the unreacted acetic anhydride, washing with 10 wt.% sodium bicarbonate solution, washing with water, vacuum extracting and distilling, and dehydrating to obtain new plasticizer. An INDEPENDENT CLAIM is also included for using method of new plasticizer in PVC, comprising mixing PVC powder, calcium zinc stabilizer and plasticizer to obtain mixture, placing mixture on a hot press platform at 160-180℃, and pressing for 10-20 minutes to obtain modified PVC.