Intumescent fire-retardant and anti-corrosive coating modified by polyaniline-silicon carbide and preparation method thereof

Abstract

An intumescent fire-retardant and anti-corrosive coating modified by polyaniline-silicon carbide and a preparation method thereof are provided, the coating includes a compound A and a compound B. The compound A includes a waterborne epoxy resin emulsion, polyaniline-silicon carbide composite material, fire-retardant filler, titanium dioxide, aluminum hydroxide, talc powder, a wetting dispersant, a defoaming agent, a flow agent and water, the compound B includes an epoxy hardener. The polyaniline-silicon carbide composite material is prepared from silicon carbide, phenylamine, protonic acid and an oxidizing agent through an ice bath. The polyaniline-silicon carbide composite material can enhance dispersion in the emulsion through the organic-inorganic composite, and silicon carbide has high thermal stability and good density, while polyaniline serves as a material with unique fire-retardant properties. The synergy between the two effectively enhances the fire resistance and anti-corrosion performance of the coating, strengthens the strength of the intumescent layer, and solves existing problems.