▎ 摘　　要

NOVELTY - Anticorrosive powder coating comprises 65-70 wt.% epoxy resin, 5-7 wt.% curing agent, 5-8 wt.% graphene, and 10-15 wt.% barrier powder filler. USE - Anticorrosive powder coating for industrial pipelines. ADVANTAGE - The anticorrosive powder coating is able to strengthen the barrier effect, the silica powder itself also has significant anti-permeation and anti-corrosion effects. It is effectively improve the heat resistance and corrosion resistance of the epoxy resin powder coating by grafting the graphene component. The graphene component has a strong adsorption capacity, and can firmly adsorb wet sericite powder and needle-like silicon micro powder on the metal surface, so that the entire coating has strong adhesion. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing industrial pipeline anticorrosive powder coating, which involves: (A) mixing silane coupling agent, absolute ethanol and deionized water according to the mass ratio of (15-20):(60-70):(8-10), until it is clear and let stand Obtain a silane coupling agent solution; (B) firstly dispersing the graphene in deionized water ultrasonically to obtain a graphene dispersion, and then placing graphene dispersion in a reactor; (C) adding the silane coupling agent solution, and after heating and stirring for 60-120 minutes, and stirring to cool to room temperature to obtain a modified graphene solution; (D) adding wet sericite powder and silica micropowder in the barrier powder filler to the high-speed mixer in sequence according to the proportion, and fully mixing at 80-90 degrees C at high speed for 30 minutes; (E) atomizing and spraying the silane coupling agent solution into a high-speed mixer, keeping it warm and mix at high speed for 30 minutes, stop stirring and cool to room temperature to obtain a modified barrier powder filler; (F) adding modified barrier powder filler to the modified graphene solution and stirring at 50-60 degrees C for 30-60 minutes, cooling to room temperature, and then washing, filtering, drying, pulverizing, and sieving to obtain a modified composite of graphene and barrier powder filler; (G) adding the proportioning amount of curing agent, stirring and mixing uniformly to obtain premix powder; and (H) putting the premix powder into the extruder for melt extrusion, cooling, and shredding into flakes, grinding, sieving, and discharging obtained flake carrier to obtain the graphene modified powder coating.