Method for preparing aqueous, environmentally-friendly and waterproof wood door coating

Abstract

The invention discloses a method for preparing an aqueous, environmentally-friendly and waterproof wood door coating. The method comprises the following steps: uniformly stirring an aqueous polyurethane dispersion, epoxy phenolic resin, glycerol, dimethicone, polyoxy ethylene nonyl phenyl ether, methylene dithiocyanate, calcium stearate, polyethylene glycol and water to obtain a prefabricated material; and adding sepiolite powder, precipitated barium sulfate, fumed silica and microcrystalline paraffin to the prefabricated material, carrying out uniform stirring, adding sodium lauryl ether sulfate, hydroxyethyl methylcellulose and diethylene glycol dimethyl ether, and carrying out uniform stirring to obtain the aqueous, environmentally-friendly and waterproof wood door coating. The coatingobtained through the method for preparing the aqueous, environmentally-friendly and waterproof wood door coating has an excellent waterproof property, and has environmental protection, decoration andprotection effects, a film formed by the coating has further enhanced adhesion and excellent strong chemical corrosion resistance, and also has resistance to wet heat and temperature variation, and the coating makes exterior walls have no spot or shedding phenomenon even in an extremely severe environment.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a preparation method of a water-based environmental protection and water-resistant wooden door coating. Background technique [0002] Traditionally, the coatings used for wooden doors are mostly solvent-based coatings, which contain a large amount of organic solvents such as benzene, toluene, and xylene as coatings. The use of this type of coating has great disadvantages in environmental protection, that is, it will pollute the environment. Harmful to the human body, so this type of oil-based paint is gradually being restricted in use. [0003] From the perspective of environmental protection, wooden door coatings that do not contain harmful solvents have been developed and applied in large quantities, but the water resistance of wooden door coatings currently on the market is average, resulting in problems such as cracking and peeling of wooden door paint films after coating du...

AI Technical Summary

Problems solved by technology

[0002] Traditionally, the coatings used for wooden doors are mostly solvent-based coatings, which contain a large amount of organic solvents such as benzene, toluene, and xylene as coatings. The use of this type of coating has great disadvantages in environmental protection, that is, it will pollute the environment. Harmful to the human body, so this type of oil-based paint is gradually being restricted in use

[0003] From the perspective of environmental protection, wooden door coatings that do not contain harmful solvents have been developed and applied in large quantities, but the water resistance of wooden door coatings currently on the market is average, resulting in problems such as cracking and peeling of wooden door paint films after coating due to environmental and climatic factors, affecting wooden doors. The appearance and performance of the finished product cannot achieve the effects of environmental protection, decoration and protection of wooden doors