Dry powder latex paint for inner wall and preparation thereof

Abstract

The invention relates to an environment-friendly inner wall dry powder latex coating and a preparation method thereof. The compositions according to weight percentages are as follows: 10-40% of re-dispersible polymer latex powder, 10-40% of titanium dioxide, 10-40% of ground calcium carbonate, 5-20% of calcined kaolin, 5-10% of talcum powder, 0.1-0.5% of cellulose ether, 0.2-0.6% of solid defoamer, 0.2-1.0% of multifunctional auxiliary agent, and 0.01-10% of tinting pigment. The inner wall dry powder latex coating formed in the invention can have scumble construction after thinning by being added with two to three times of water, and the thickness of dry film is 20 microns to 200 microns; the color is tunable; the storage is stable, and the transportation is convenient; the VOC thereof cannot be detected (real zero VOC), and the coating film performances meet the technical requirements of national standard of inner wall latex coating; and the combination properties of products can reach international most advanced level of similar products.

Description

technical field [0001] The invention relates to the preparation of architectural coatings, more specifically, to an environment-friendly interior wall dry powder latex coating and a preparation method thereof. Background technique [0002] With the improvement of people's living standards and the enhancement of environmental protection awareness, the consumption of water-based coatings has increased significantly. Especially in the field of construction, water-based coatings (mainly latex coatings) have occupied more than 80% of the architectural coatings market. [0003] However, the harm of volatile organic compounds (Volatile Organic Compound, abbreviated as VOC) in architectural latex paints to human body and environment is still an urgent problem to be solved. Five years ago, my country's national standard stipulated that VOC in architectural latex coatings was 250 grams per liter of paint (about 1600 grams), and now the regulation is VOC ≦ 100 grams per liter of paint...

AI Technical Summary

Problems solved by technology

However, these dry powder coatings have not been popularized. The main reason is that most of the construction methods require thick film coating, and the coating film performance cannot be compared with latex coatings.

[0005] At present, judging from the actual situation at home and abroad, the dry powder coatings on the market require thick film coating, the products are relatively single, and there are many homogeneous products, and they are mainly used in the field of temporary construction projects and other occasions that do not require high coating performance.

The preparation method of the real zero-VOC interior wall dry powder latex paint with performance equivalent to that of traditional interior wall latex paint, adjustable color and thin coating, has not been reported at home and abroad.