A polyphenylene sulfide powder coating with both anti-corrosion and fire-proof functions

Abstract

The invention belongs to the technical field of preparation of powder coatings and particularly discloses a polyphenylene sulfide powder coating having both anti-corrosion and fire-proof functions. The coating is prepared from 15%-55% of polyphenylene sulfide, 0-10% of titanium dioxide, 0-5% of mica powder, 0-3% of barium sulfate, 0.5%-1.5% of a silane coupling agent, 2.5%-5% of expandable graphite powder, 6%-10% of microcapsule modified ammonium polyphosphate, 6%-10% of microcapsule melamine, 6%-10% of microcapsule pentaerythritol, 0.5%-1.5% of a dispersing agent, 0.5%-1.5% of a leveling agent and 3%-7.5% of fatty alcohol polyoxyethylene methyl terminated polyether. The polyphenylene sulfide powder coating is applicable to fire-proof and anti-corrosion protection of steel structure buildings, large chemical reaction kettles, chemical corrosive raw material delivery pipelines and valves and has excellent anti-corrosion performance and good fire-proof performance.

Description

technical field [0001] The invention belongs to the technical field of powder coating preparation, in particular to a polyphenylene sulfide powder coating with both anti-corrosion and fireproof functions. Background technique [0002] Polyphenylene sulfide (PPS) is a special engineering plastic with excellent comprehensive properties. It has the characteristics of high temperature resistance, radiation resistance, flame retardancy, non-toxicity, excellent electrical properties, etc., and has balanced physical and mechanical properties and excellent dimensional stability. sex. [0003] In recent years, the scope of application of polyphenylene sulfide powder coatings in pharmaceutical, pesticide, dye and fine chemical industries, such as reactors, large pipelines, chemical valves, and steel structure buildings, has continued to expand. But at the same time, steel materials also have insurmountable safety hazards. Although steel structures are non-combustible materials, their...

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Problems solved by technology

The harm of doing this is that first, the traditional anti-rust primer uses a large amount of solvent, which is very harmful to the environment before and after the construction process; second, the compatibility between the anti-rust and anti-corrosion primer and the fireproof coating is not good, and the surface will be damaged after a long time. Fire retardant coatings may peel off, reducing fire protection effectiveness

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