Air-resistant antioxidative rust-proof epoxy finish coat and preparation method thereof

Abstract

The invention relates to a rust-proof paint and specifically relates to an air-resistant antioxidative rust-proof epoxy finish coat and a preparation method thereof. The epoxy finish coat is prepared from the following raw materials in parts by weight: 40-50 parts of epoxy resin, 25-30 parts of polyamide resin, 1-2 parts of dodecyl dimethyl tertiary amine, 2-3 parts of nano-molybdenum trioxide, 4-6 parts of acetyl pullulan, 1-3 parts of ascorbyl palmitate, 10-14 parts of magnesium aluminum silicate, 20-25 parts of n-butyl acetate, 10-13 parts of n-butyl alcohol, 18-22 parts of rust-proof pigments and 2-3 parts of auxiliaries. According to the air-resistant antioxidative rust-proof epoxy finish coat, nano-molybdenum trioxide is dispersed in the solution of acetyl pullulan at a high speed to improve the binding capacity of the finish coat with the epoxy resin, and acetyl pullulan has excellent film-forming capability and is capable of improving the compactness of the finish coat film; besides, the raw materials of the epoxy finish coat are compatible and combined with one other very sufficiently; after being cured completely, the epoxy finish coat has excellent mechanical properties and better air resisting and rust proofing effects, is more durable and can be used as a matched finish coat for various high-performance special anti-rust primers, epoxy zinc-rich paints and epoxy micaceous iron anti-rust paints.

Description

technical field [0001] The invention relates to an anti-rust paint, in particular to a gas-barrier, anti-oxidation, anti-rust and anti-rust epoxy top paint and a preparation method thereof. Background technique [0002] Antirust paint is a kind of paint used to protect the metal surface from the erosion of the atmosphere, seawater and other substances. It is widely used in daily life. Epoxy antirust paint is a relatively common type of antirust paint. Polyamide resin is used as a curing agent, and different anti-rust pigments are used to prepare different anti-rust paints. Poor, not UV-resistant, easy to chalk after long-term use, the rust-proof effect is not durable enough, and the paint film is easy to fall off, which restricts the application of epoxy topcoats. SUMMARY OF THE INVENTION [0003] The object of the present invention is to provide a kind of gas-barrier anti-oxidation anti-rust epoxy topcoat and preparation method thereof, in order to achieve the above purp...

AI Technical Summary

Problems solved by technology

[0002] Anti-rust paint is a kind of coating used to protect metal surfaces from the erosion of air, sea water and other substances. It is widely used in daily life. Epoxy anti-rust topcoat is a relatively common type of anti-rust paint. Polyamide resin is used as the curing agent, accompanied by different antirust pigments, so as to prepare different antirust paints, which have good adhesion and paint film strength. At present, most of the epoxy resin antirust topcoats on the market have poor weather resistance. Poor, not resistant to ultraviolet rays, easy to powder after long-term use, not durable enough for anti-rust effect, easy to fall off the paint film and other problems, restricting the application of epoxy topcoat