Waterborne wood coating with zero VOC volatilization and preparation method of waterborne wood coating

Abstract

The invention relates to the technical field of waterborne coatings, in particular to a waterborne wood coating with zero VOC volatilization and a preparation method of the waterborne wood coating. The waterborne wood coating comprises a component A, a component B and water, wherein the component A comprises the following raw materials in parts by weight: starch, castor oil, emulsifiers, a preservative, a water-based defoamer, an aqueous catalyst and purified water, and the component B is water dispersible type modified polyisocyanate; the ratio in parts by weight of the component A to the component B to water is 1: (0.3-1): (0.3-1). The waterborne wood coating with the zero VOC volatilization disclosed by the invention takes the castor oil and starch as raw materials, thereby being natural and environment-friendly, free of toxicity and having good cold resistance, heat resistance, dryness resistance and humidity resistance, excellent adhesion and high impact resistance; furthermore, the method is low in input equipment cost, simple and convenient in process and easy to operate.

Description

technical field [0001] The invention relates to the technical field of water-based coatings, in particular to a zero-VOC volatilization water-based wood coating and a preparation method thereof. Background technique [0002] During the production and use of solvent-based wood coatings, a large amount of organic solvents volatilize into the atmosphere, causing pollution to the environment and poisoning to the body of production personnel. At the same time, due to the existence of flammable organic solvents in the production and construction process, fire prevention is required throughout the process. Now There are water-based wood coatings made of propionate emulsions, acrylates and polyurethanes, and the content of organic volatile agents is reduced to 5%-30%. Although this greatly reduces the content of organic solvents, there is still a problem for users. At the same time, due to the reduction of organic solvents, the performance of cold and heat resistance is reduced, and...

AI Technical Summary

Problems solved by technology

[0002] During the production and use of solvent-based wood coatings, a large amount of organic solvents volatilize into the atmosphere, causing pollution to the environment and poisoning to the body of production personnel. At the same time, due to the existence of flammable organic solvents in the production and construction process, fire prevention is required throughout the process. Now There are water-based wood coatings made of propionate emulsions, acrylates and polyurethanes, and the content of organic volatile agents is reduced to 5%-30%. Although this greatly reduces the content of organic solvents, there is still a problem for users. It has a great impact on the environment, and at the same time, due to the reduction of organic solvents, the performance of cold and heat resistance is reduced. Moreover, the preparation process of this type of water-based wood coating is complicated, and the input cost is high. It requires large-scale equipment and professional technical operators to prepare.