▎ 摘　　要

NOVELTY - Method for preparing a water-based micro-nano graphite wind power blade deicing coating system involves (a) (a1) taking hydroxyethyl cellulose and water at a mass ratio of hydroxyethyl cellulose to water of 1:50, and adding hydroxypropyl cellulose to the water under stirring, (b) mixing the flexible silicate thermal insulation coating comprising a mixture of component (A) and component (B), (c) (c1) taking the steel plate and performing rust removal, dust removal and decontamination treatment on the surface of the steel plate, (d) using fine sand to polish away the excess coating of the thermal insulation layer to expose the heating element, (e) coating the water-based micro/nano graphite paint on the flat flexible silicate heat-insulating coating, and (f) coating the fluorocarbon varnish evenly on the water-based micro-nano graphite thermal conductive coating, and coating it to complete coverage to obtain the product. USE - The method is used for preparing a water-based micro-nano graphite wind power blade deicing coating system. ADVANTAGE - The method combines active deicing and passive anti-icing, has good deicing effect, low deicing energy consumption, easy installation, and excellent environmental protection, and can ensure the normal operation of the fan in icy and snowy days. DETAILED DESCRIPTION - Method for preparing a water-based micro-nano graphite wind power blade deicing coating system involves (a) (a1) taking hydroxyethyl cellulose and water at a mass ratio of hydroxyethyl cellulose to water of 1:50, and adding hydroxypropyl cellulose to the water under stirring to obtain an aqueous solution of hydroxyethyl cellulose, (a2) taking 1-10 %mass graphene aqueous slurry, 35-50 %mass acrylic emulsion, 10-30 %mass heavy calcium powder, 5-25 %mass titanium dioxide, 5-20 %mass hydroxyethyl cellulose aqueous solution, 0.2-0.6 %mass dispersant, 0.1-0.5 %mass defoamer, 0.5-2 %mass film-forming aid, 0-0.5 %mass thickener, and 3-15 %mass water, where the method for preparing water-based micro-nano graphite paint involves adding water, graphene water-based slurry, dispersant, defoamer, and film-forming additive to the dispersing machine, and stirring and dispersing uniformly, adding heavy calcium powder and titanium dioxide under stirring, stirring and dispersing evenly, adding the acrylic emulsion and the hydroxyethyl cellulose aqueous solution under stirring, stirring and dispersing evenly, and finally adding the thickener and stir and dispersing until evenly, obtaining the water-based micro-nano graphite paint, (b) mixing the flexible silicate thermal insulation coating comprising a mixture of component (A) and component (B), the component (A) comprises 5-15 %mass expanded vermiculite powder, 40-60 %mass acrylic emulsion, and 0-0.5 %mass dispersant, 0.1-0.4 %mass water reducing agent, 0-0.5 %mass defoamer, and 24-55 %mass water, the method for preparing the component (A) involves adding water, acrylic emulsion, dispersant, water reducing agent, and defoamer to the disperser in sequence, stirring and dispersing evenly, adding expanded vermiculite powder, stirring and dispersing evenly, to obtain the component (A) of the flexible silicate heat-insulating coating, the component (B) is Portland cement, during construction, taking 80-90 %mass component (A) and 10-20 %mass component (B) on-site, and mixing evenly to obtain flexible silicate thermal insulation coating, (c) (c1) taking the steel plate and performing rust removal, dust removal and decontamination treatment on the surface of the steel plate to obtain a steel plate with a clean surface, (c2) applying the flexible silicate thermal insulation coating uniformly on a steel plate with a clean surface, with a coating thickness of 1-5 mm, to obtain a flexible silicate thermal insulation coating which is a thermal insulation layer, (c3) laying heating elements with the flexible silicate thermal insulation coating obtained in step (b) above, inlaying the component into the flexible silicate thermal insulation coating, and placing it on the thermal insulation layer to dry, (d) using fine sand to polish away the excess coating of the thermal insulation layer to expose the heating element to obtain a smooth and flexible silicate thermal insulation coating, (e) uniformly coating the water-based micro/nano graphite paint on the flat flexible silicate heat-insulating coating, coating 2-5 times, the first coating is completed, after naturally drying, carrying-out the second coating, and obtaining the water-based micro-nano graphite thermal conductive coating after drying, and (f) coating the fluorocarbon varnish evenly on the water-based micro-nano graphite thermal conductive coating, and coating it to complete coverage to obtain the product.