▎ 摘　　要

NOVELTY - A hydrophobic oxyfluoride graphene composite polyimide powder coating is obtained using polyimide, fluorinated graphite, potassium persulfate, sodium nitrate, potassium permanganate, sebacic acid, phosphorus pentoxide, dicyclohexylcarbodiimide, 4-dimethylaminopyridine, pyridine thioketone, dibenzothiazole disulfide, alkenyl succinic anhydride, polyoxyethylene ester of oleic acid, bees wax, hexamethylphosphoric triamide, montmorillonite powder, mercaptan butyltin, dimethylformamide, sulfuric acid and anhydrous ethanol. USE - Hydrophobic oxyfluoride graphene composite polyimide powder coating (claimed). ADVANTAGE - An oxyfluoride graphene composite polyimide powder coating has good hydrophobicity, strong resistance to leakage, high surface strength, good toughness and excellent performance. DETAILED DESCRIPTION - A hydrophobic oxyfluoride graphene composite polyimide powder coating is obtained using 100-110 pts. wt. polyimide, 10-14 pts. wt. fluorinated graphite, 0.1-0.3 pt. wt. potassium persulfate, 1-2 pts. wt. sodium nitrate, 0.1-0.4 pt. wt. potassium permanganate, 4-6 pts. wt. sebacic acid, 0.5-1 pt. wt. phosphorus pentoxide, 0.1-0.2 pt. wt. dicyclohexylcarbodiimide, 0.1-0.2 pt. wt. 4-dimethylaminopyridine, 0.4-1 pt. wt. pyridine thioketone, 0.6-1 pt. wt. dibenzothiazole disulfide, 2-3 pts. wt. alkenyl succinic anhydride, 1-2 pts. wt. polyoxyethylene ester of oleic acid, 2-4 pts. wt. bees wax, 0.1-0.4 pt. wt. hexamethylphosphoric triamide, 6-8 pts. wt. montmorillonite powder, 0.3-1 pt. wt. mercaptan butyltin, dimethylformamide, sulfuric acid and anhydrous ethanol. An INDEPENDENT CLAIM is included for preparation of hydrophobic oxyfluoride graphene composite polyimide powder coating, which involves adding an alkenyl succinic anhydride to deionized water at a weight of 21-30 times, rising the temperature to 60-70 degrees C, stirring for 4-9 minutes, adding montmorillonite powder, stirring the mixture for 10-20 minutes, adding 10-14 mol/l sodium hydroxide, adjusting the pH to 10-12, stirring for 1-2 hours, filtering, vaccumizing the filtrate at 80-90 degrees C, drying for 30-40 minutes to obtain modified soil powder, mixing fluorinated graphite, the modified soil powder, potassium persulfate and phosphorus pentoxide, adding 5-7 times the weight of the mixture to 96-98% sulfuric acid solution, feeding the mixture in to a oil bath, heating to 80-90 degrees C, heat-preserving for 8-9 hours, discharging the material, filtering, washing the precipitate for 3-4 times, drying at 60-65 degrees C for 10-12 hours, mixing the mixture with sodium nitrate and adding 17-20 times by weight of the mixture to 90-95% sulfuric acid solution in an ice water bath, adding potassium permanganate, reacting for 4-5 hours, heating to 35-40 degrees C, heat-preserving and reacting for 1-2 hours, adding 10-15 times the weight of the mixed system to distilled water, rising the temperature to 90-95 degrees C, heat- preserving, reacting for 10-20 minutes, allowing to settle for 10-15 hours, centrifuging, separating the precipitate, washing the precipitate for 2- 3 times, freezing, drying for 40-50 hours to obtain oxide-graphite fluoride, adding dibenzothiazyl disulfide to 7-10 times the weight of anhydrous ethanol, stirring, rising the temperature to 50-60 degrees C, heating for 3-4 minutes, adding pyridine thioketone oxygen fluoride graphite, ultrasonically processing for10-15 minutes, filtering, washing the precipitate for 3-4 times, vaccumizing and drying at 80-90 degrees C for 1-2 hours to obtain modified oxyfluoride graphite, mixing the modified oxyfluoride graphite obtained and sebacic acid, adding the mixture to 100-110 times the weight of the dimethylformamide, heating to 57-60 degrees C,stirring for 20-25 hours, cooling the mixture, ultrasonically processing at 60-65 Pt. wt. for1-2 hours to obtain the graphite dispersion, adding 4-dimethylaminopyridine, dicyclohexylcarbodiimide to the dimethylformamide having a weight of 23-40 times of the mixture, stirring the mixture to obtain a catalytic dispersion, adding the graphite dispersion obtained is to an ice-water bath, dripping the catalytic dispersion, reacting for 2-3 hours, heating to 60-64 degrees C, stirring for 40-50 hours, centrifuging, separating the precipitate with dimethyl formamide, anhydrous ethanol, and deionized water, washing the precipitate for 3-4 times, freezing, drying to obtain grafted graphene, adding the grafted graphene obtained, thiamine butyltin, anhydrous ethanol to 3-4 times the weight of the mixture, stirring, adding hexamethylphosphoric triamide, heating to 70-80 degrees C for 10-20 minutes, distilling to remove ethanol, drying in a oven at 50-60 degrees C to obtain modified grafted graphene, mixing the modified grafted graphene and the remaining raw materials, stirring, feeding in to an extruder, melting, cooling, grinding in to fine powder and sieving.