▎ 摘　　要

NOVELTY - Fatigue-resistant flame-retardant PVC plastic boot comprises 95-100 pts. wt. PVC resin, 2-4 pts. wt. plasticizer, 3-5 pts. wt. flame retardant filler, 1 pts. wt. antioxidant and 0.5 pts. wt. lubricant. The filler is prepared by adding trichloromethyl silane, and potassium hydroxide tetrahydrofuran into the reaction kettle under the protection of nitrogen, adding acrylamide and absolute ethanol into the three-necked flask, stirring for 5 minutes, introducing nitrogen, raising the temperature to 40℃, adding triethylamine, refluxing and reacting, adding 5-carboxybenzotriazole and dimethyl sulfoxide into the 3-necked flask for 3 minutes, dropping N,N-dimethylformamide and thionyl chloride, adding dibromomethane, adding trihydroxymethyl phosphorus oxide, absolute ethanol and deionized water, ultrasonically dispersing for 20 minutes, adding chloroacetic acid and sodium hydroxides, adding ethanol solution of intermediate and concentrated sulfuric acid, precipitating, washing, and drying. USE - Fatigue-resistant and flame-retardant PVC plastic boot for use in a fire-fighting product field and a labour protection product field. ADVANTAGE - The fatigue-resistant flame-retardant PVC plastic boot has excellent fatigue resistance and flame retardant performance. DETAILED DESCRIPTION - Fatigue-resistant flame-retardant PVC plastic boot comprises 95-100 pts. wt. PVC resin, 2-4 pts. wt. plasticizer, 3-5 pts. wt. flame retardant filler, 1 pts. wt. antioxidant and 0.5 pts. wt. lubricant. The flame-retardant filler is prepared by: (1) under the protection of nitrogen, adding trichloromethyl silane, and potassium hydroxide tetrahydrofuran into the reaction kettle at 25-30 ℃, stirring for 20-30 minutes, adding 2-mercaptoethanol, controlling the reaction temperature at 58-62 ℃, stirring and reacting for 5-8 hours, after finishing reaction, washing, extracting, vacuum distilling to obtain intermediate 1; (2) adding the trihydroxymethyl phosphorus oxide and diethylene glycol dimethyl ether into the four-necked flask, adding intermediate 1 at 20 ℃, raising the temperature to 70 ℃, keeping the temperature and reacting for 8 hours, then raising the temperature to 120 ℃, stirring and reacting for 6 hours, adding triethylamine to adjust the pH value to 5-6, stirring for 1 hour, filtering when it is hot, distilling the filtrate, dropping sodium carbonate solution to adjust the pH value to 7, allowing to stand and layering, separating liquid, drying to obtain intermediate 2; (3) adding intermediate 2, acrylamide and absolute ethanol into the three-necked flask, stirring for 5 minutes, introducing nitrogen, raising the temperature to 40 ℃, adding triethylamine, refluxing and reacting for 50 minutes, after finishing reaction, washing, vacuum distilling to obtain intermediate 3; (4) adding 5- carboxy benzotriazole and dimethyl sulfoxide into the three-necked flask, stirring for 3 minutes, dropping N,N-dimethyl formamide and thionyl chloride, after finishing dripping, raising the temperature to 90 ℃, refluxing and stirring for 3 hours, washing, extracting and rotary steaming to obtain intermediate 4; (5) adding the piperidine ethylenediamine, anhydrous acetone and potassium carbonate into a three-necked flask, under the protection of nitrogen, cooling to -10 ℃, dropping acetone solution of intermediate 4, after finishing dropping in 30 minutes, stirring and reacting for 1 hour at 0 ℃, raising the temperature to room temperature, stirring and reacting for 6 hours, after finishing reaction, filtering, vacuum distilling, re-crystallizing, obtaining intermediate 5; (6) adding potassium carbonate, isosorbide and deionized water into the reaction kettle, the temperature is 25-30 ℃, stirring for 20-30 minutes, adding dibromomethane, and then raising the temperature to 70-75 ℃, stirring and reacting for 5-8 hours, cooling to obtain the intermediate 6; under the protection of nitrogen, adding ethanol solution of intermediate 5 into the reaction kettle, mixing liquid of intermediate 3, cooling to -5 ℃, stirring and reacting for 1-2 hours, filtering, vacuum distilling the filtrate after extracting to obtain intermediate 7; (7) adding graphene oxide, absolute ethanol and deionized water in round bottom flask, ultrasonically dispersing for 20 minutes, adding chloroacetic acid and sodium hydroxide, stirring and reacting for 2-4 hours, dripping ethanol solution of intermediate 7 and concentrated sulfuric acid, finishing dropping in 30 minutes, raising the temperature to 60-63 ℃, stirring and reacting for 1 hour, centrifuging for 20 minutes, precipitating and washing, and drying to obtain the flame-retardant filler. An INDEPENDENT CLAIM is included for preparation of plastic boot comprising adding PVC resin, flame retardant filler and antioxidant into the stirrer, mixing for 10 minutes under the rotating speed of 60-100 revolutions/minute, then transferring to the double-roller open mill, adding plasticizer and lubricant, controlling the temperature at 170 ℃, mixing for 8 minutes to obtain the PVC mixed material; transferring PVC material to the mold for injection molding.