Powder coating for aluminium profile

Abstract

The invention discloses powder coating for an aluminium profile, prepared from the following raw materials in parts by weight: 3-4 parts of ammonium polyphosphate, 1-2 parts of dibutyltin maleate, 1-3 parts of 1,3,4,6-Tetrakis(methoxymethyl)glycoluril, 3-4 parts of PTMG, 7-8 parts of magnet powder, 14-16 parts of light calcium carbonate, 2-3 parts of ferric oxide, 0.6-0.8 part of sorbitan monooleate, 2-3 parts of carboxymethyl cellulose, 4-5 parts of adipic acid dihydrazide, 10-12 parts of polyurethane resin, 0.3-0.4 part of polyxyethylated alkylphenol, 84-95 parts of epoxy resin, 6-8 parts of phenolic resin, 1-2 parts of vaseline, 0.1-0.2 part of rare earth chloride, 15-18 parts of chitosan and 4-5 parts of polyvinyl alcohol. A prepared product is solvent-free, green and environment-friendly, is flat and smooth in paint film surface, also has the characteristics of high strength, good heat insulation property, high lustrousness and good attachment, and has good application prospect when being used for the aluminium profile.

Description

technical field [0001] The invention relates to the technical field of powder coatings, in particular to a powder coating for aluminum profiles. Background technique [0002] Powder coating has the characteristics of solvent-free, non-environmental pollution, powder recovery and high utilization rate, and has been widely used. Powder coatings can be divided into two categories: thermoplastic and thermosetting. Thermoplastic powder coatings use thermoplastic resin as a film-forming substance. Its characteristic is that the synthetic resin becomes soft as the temperature rises and becomes hard after cooling. This process can be repeated many times, and it will gradually age after each change. Eventually it becomes a non-plastic powder. Thermosetting powder coatings use thermosetting synthetic resins as film-forming substances. It is characterized by the use of some prepolymer resins with a lower degree of polymerization, which are baked and solidified at a certain temperatu...

AI Technical Summary

Problems solved by technology

[0003] The patent number is CN201510396989.7 "A New Type of Low-Temperature Curing Epoxy Powder Coating". It is an important method for general-purpose powder coatings with high curing temperature, narrow application range and high energy consumption. It uses the good compatibility characteristics of bisphenol A epoxy resin and modified crosslinking agent to make the coating have excellent adhesion, It has the advantages of impact resistance, heat and humidity resistance, etc. The filler uses precipitated barium sulfate and active silica powder to make the coating have good acid resistance and alkali resistance, but the powder coating prepared by this invention cannot meet the needs of corrosion, antibacterial and protection fields