▎ 摘　　要

NOVELTY - Treatment process for reducing exposure and cracking of willow-knitted product involves: (1) adding graphite powder to a concentrated sulfuric acid solution in an ice bath environment under magnetic stirring, evenly dispersing, slowly adding a proper amount of potassium permanganate, reacting for 2-3 hours, then transferring to 40-50 degrees C water bath, continuously reacting for 1-2 hours, adding a proper amount of ultrapure water after the reaction is completed, placing in an oil bath, stirring for 10-15 minutes, cooling to room temperature, adding a small amount of hydrogen peroxide until no more bubbles are generated, washing 3-5 times with aqueous hydrochloric acid, then washing with distilled water to neutral, ultrasonically dispersing in distilled water, and then centrifuging the graphene oxide dispersion to obtain an aqueous dispersion of graphene oxide; and (2) putting a preset amount of carbon nanotubes into a tubular furnace, and treating at 1200-1300 degrees C for 2-3 hours. USE - The treatment process is useful for reducing exposure and cracking of willow-knitted product. ADVANTAGE - The treatment process improves the adaptability of willow-knitted materials to external environmental changes, and the resistance of the entire system to thermal stress caused by temperature factors, thus effectively improving the cracking or even breaking of the willow-knitted raw materials during exposure process and improving the quality of willow-knitted raw materials to have broad application prospects. DETAILED DESCRIPTION - Treatment process for reducing exposure and cracking of willow-knitted product involves: (1) adding graphite powder to a concentrated sulfuric acid solution in an ice bath environment under magnetic stirring, evenly dispersing, slowly adding a proper amount of potassium permanganate, reacting for 2-3 hours, then transferring to 40-50 degrees C water bath, continuously reacting for 1-2 hours, adding a proper amount of ultrapure water after the reaction is completed, placing in an oil bath, stirring for 10-15 minutes, cooling to room temperature, adding a small amount of hydrogen peroxide until no more bubbles are generated, washing 3-5 times with aqueous hydrochloric acid, then washing with distilled water to neutral, ultrasonically dispersing in distilled water, and then centrifuging the graphene oxide dispersion to obtain an aqueous dispersion of graphene oxide; (2) putting a preset amount of carbon nanotubes into a tubular furnace, treating at 1200-1300 degrees C for 2-3 hours, then dispersing the heat-treated carbon nanotubes in N,N-dimethylformamide, carrying ultrasonic dispersion treatment for 50-80 minutes, centrifuging to remove the solvent to get pretreated carbon nanotubes, adding the pretreated carbon nanotubes to the graphene oxide aqueous dispersion, and carrying out high-speed stirring and ultrasonic treatment to obtain a willow-knitted raw material treatment liquid; (3) cleaning a willow-knitted material to remove impurities, drying until the water content is 20-30%, then treating by using a steam explosion equipment, immersing the treated willow-knitted material in the prepared willow-knitted raw material treatment liquid, carrying out ultrasonic treatment at 30-40 degrees C and 300-400 W for 2-3 hours, taking out the willow-knitted material after the treatment is completed, and draining water in the natural state to obtain pretreated willow-knitted raw materials; and (4) dissolving 2-5 %mass polyvinylidene fluoride in N,N-dimethylformamide, stirring for 2-3 hours to a polyvinylidene fluoride solution, then immersing the pretreated willow-knitted material in the polyvinylidene fluoride solution, carrying out ultrasonic treatment at 40-50 degrees C for 2-3 hours, then taking out, draining water and drying at 50-60 degrees C for 5-7 hours.