Water-based mineral inorganic coating for interior wall and preparation method thereof

Abstract

The invention discloses a water-based mineral inorganic coating for an interior wall. The water-based mineral inorganic coating is mainly prepared from nano-modified silicon dioxide, modified potassium silicate, emulsion, titanium dioxide, kaolin, other mineral fillers, cellulose ether, water and the like. According to the water-based mineral inorganic coating for the interior wall, the main binding substance is nano-modified silicon dioxide, auxiliary binding substances are modified potassium silicate and emulsion, the binding substances wrap titanium dioxide, kaolin and other mineral filler, the standard of high-quality interior wall coating can be met, and A-level fire prevention can be achieved; the water-based coating meets the mandatory requirements in GB 50222-2017 Building Internal Decoration Design Fireproofing Code, has good storability, good compatibility with water-based paint color paste and various colors, and can meet the daily indoor decoration requirements. The modified nano silicon dioxide aqueous solution and the silicone acrylic emulsion RS-996AD are compounded and hybridized, so that the scrubbing-resistant strength of a coating film is high, and the strength of the coating film is obviously increased in age.

Description

technical field [0001] The invention relates to a water-based inorganic coating for mineral interior walls and a preparation method thereof, belonging to the technical field of coatings. Background technique [0002] With the implementation of GB 50222-2017 "Code for Fire Protection Design of Building Interior Decoration" in 2018, it is mandatory to stipulate the ceiling and building area of ​​residential buildings, industrial plants, and special places, such as: evacuation walkways, safety exits, evacuation stairwells, etc. The walls and partitions of buildings exceeding a certain scale must use Class A fireproof decoration materials, and it is pointed out that "3.0.6 Inorganic decoration coatings applied on Class A substrates can be used as Class A decoration materials." [0003] At present, the vast majority of interior wall paints on the market use acrylic emulsion as the film-forming substance. This type of emulsion is a petroleum-based synthetic product, all of which a...

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Problems solved by technology

There are also some inorganic coatings with less organic content (0% to 5%) that can achieve Class A fire protection, but their binders are mostly modified potassium silicate, because this is a highly active water-soluble inorganic coating. Mineral salt, so the stability of the finished paint is poor. After long-term storage, it will be accompanied by serious post-thickening gel phenomenon and water separation. Because its pH is above 12, many raw materials in ordinary paint cannot be used in inorganic paint. It has been used for a long time under high alkaline conditions, and it is impossible to use the water-based color paste in ordinary interior wall paint, which also results in a single color, mostly white or very light color, which is difficult to meet the daily decoration needs

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