Anti-corrosive paint containing epoxy-modified polyurethane emulsion

Abstract

The invention discloses anti-corrosive paint containing epoxy-modified polyurethane emulsion. The anti-corrosive paint is prepared from the following raw materials by mass percent: 60-80% of the epoxy-modified aliphatic polyurethane emulsion, 5-10% of silica sol, 2-5% of titanium dioxide, 3-5% of mica, 1-3% of water-based silicone oil, 0.1-0.5% of sodium dodecyl benzene sulfonate, 0.5-1% of an alkali-swelling acrylic thickener, 0.3-0.6% of polyether-modified dimethyl siloxane, 0.1-0.5% of acrylic copolymer potassium salt, 0.1-0.5% of polyether modified polysiloxane and the balance of distilled water, wherein the epoxy-modified aliphatic polyurethane emulsion is prepared from the following raw materials in parts by mass: 40-80% of isophorone diisocyanate, 25-40 parts of polypropylene glycol, 25-80 parts of polyethylene glycol, 3-10 parts of dimethylolpropionic acid, 5-12 parts of epoxy resin, 50-80 parts of butanone, 4-10 parts of diethylenetriamine, 3-11 parts of triethylamine, 1-3 parts of dibutyltin dilaurate and 40-80 parts of distilled water. Polyurethane is modified by using epoxy resin, so that the water resistance and mechanical property of a formed film are improved.

Description

technical field [0001] The invention relates to the field of packaging and decoration, in particular to an anticorrosion paint containing epoxy-modified polyurethane emulsion. Background technique [0002] In order to prevent the materials or semi-products exposed to the atmosphere from being polluted, corroded and damaged, and prolong their service life, they are usually coated with good protective and peelable coatings on their surfaces for effective and temporary maintenance. Archive protection. In this way, it can not only isolate the invasion of air, salt spray, and microorganisms from the outside to achieve anti-corrosion effect; but also achieve the effect of cleaning and decontamination by adsorbing pollutants. Compared with solvent-based protective coatings, water-based protective coatings are safer and more environmentally friendly, so they are widely used in the field of product packaging and decoration. However, the existing water-based protective coatings sti...

AI Technical Summary

Problems solved by technology

However, the existing water-based protective coatings still have the disadvantages of low film strength, poor peelability and single protective performance.