▎ 摘　　要

NOVELTY - Aqueous anti-corrosion non-stick coating comprises 30-60 pts. wt. fluorine resin emulsion, 20-40 pts. wt. polyamide-imide (PAI) emulsion, 15-30 pts. wt. anti-corrosion filler, 10-20 pts. wt. pigment, 1-5 pts. wt. auxiliary agent, 1-5 pts. wt. pH regulator and 10-30 pts. wt. water. USE - Used as aqueous anti-corrosion non-stick coating. ADVANTAGE - The coating enhance the corrosion resistance of the coating film. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the coating comprising (a) preparing PAI by (a1) adding trimellitic anhydride into the reaction bottle to dissolve in N-methyl pyrrolidone and xylene, heating to 70-90 degrees C under the protection of inert gas, adding diphenyl methane-4,4'-diisocyanate, when trimellitic anhydride is completely dissolved, preserving temperature,, reacting for 1-3 hours, raising the temperature to 120-140 degrees C, continuously keeping the temperature and reacting for 3-5 hours, washing with absolute ethyl alcohol, filtering, drying to obtain PAI, where the molar ratio of trimellitic anhydride and diphenylmethane-4,4'-diisocyanate is 1:1-1.05, the mass of N-methylpyrrolidone is 2-3 times the sum of trimellitic anhydride and diphenylmethane-4,4'-diisocyanate and the content of xylene is 5-10 wt.% or (a2) dissolving the anhydride in the solvent, heating to 70-90 degrees C under the protection of inert gas, adding 50-80 wt.% diisocyanate, when the anhydride is completely dissolved, preserving temperature and reacting for 1-3 hours, raising the temperature to 120-140 degrees C, adding the rest diisocyanate, where the mol ratio of anhydride and diisocyanate is 1:1.05-1.2, keeping the temperature and reacting for 3-5 hours, using absolute ethyl alcohol to wash, filtering, drying to obtain isocyanate terminated polyamide imide, mixing 1-3 pts. wt. dihydric alcohol and 30-40 pts. wt. trihydric alcohol under the protection of inert gas, raising the temperature to 100-120 degrees C, when the dihydric alcohol and trihydric alcohol melting, adding 20-40 pts. wt. dibasic acid, raising the temperature to 160-180 degrees C, keeping the temperature for 0.5-1 hour, raising the temperature to 200-220 degrees C, keeping the temperature for 2-4 hours, cooling to 120-140 degrees C after the acid value is less than 10 mgKOH/g, adding 20-40 pts. wt. organic solvent to dilute to obtain hydroxy terminated hyperbranched polyester resin, adding 30-80 pts. wt. organosilicone intermediate, 0.15-0.3 pts. wt. catalyst and 20-40 pts. wt. organic solvent, keeping the temperature for 2-4 hours under 120-140 degrees C, obtaining hydroxy-terminated organosilicone modified hyperbranched polyester resin, dissolving the isocyanate-terminated polyamide imide in the solvent, making the solid content to 20-40 wt.%, adding to the hydroxy-terminated organosilicone modified hyperbranched polyester resin, adding organic bismuth catalyst, keeping the 70-90 degrees C for 2-4 hours, preparing to obtain organosilicon modified polyamide imide, where the molar ratio of the hydroxy groups of the isocyanate group and the hydroxy group-terminated silicone modified hyperbranched polyester resin in the isocyanate group-terminated polyamide imide is 1:1-1.05, (b) dissolving prepared PAI in 5-10 wt.% N-methyl pyrrolidone, adding 0.5-2 wt.% anionic surfactant and non-ionic surfactant, high speed shearing and stirring and mixing uniformly, dropping water until the viscosity of the system is less than 1 Pa.s, adding the un-dropped water once, continuously stirring to obtain PAI emulsion and (c) uniformly mixing the PAI emulsion and the fluorine resin emulsion, orderly adding preservative effect filler, pigment, auxiliary agent, pH regulator and water and grinding to obtain the coating.