Fluorine-containing titanium sol, inorganic silicate coating and preparation method thereof

Abstract

The invention belongs to the field of coatings and discloses fluorine-containing titanium sol, an inorganic silicate coating and a preparation method thereof. The fluorine-containing titanium sol hasa structure shown in the formula I, wherein Rf represents a fluorine-containing alkyl group with a C1-8 carbon atom chain and -O represents a -Si-O or -Ti-O repeating structural unit. The inorganic silicate coating comprises, by weight, 100 parts of an inorganic silicate solution, 2 to 30 parts of fluorine-containing titanium sol, 5 to 50 parts of silica sol, 0.5 to 5 parts of small molecule organosiloxane, 10 to 100 parts of water, 15 to 65 parts of a filler, 5 to 40 parts of a pigment, 0.5 to 3 parts of a defoamer, 0.5 to 3 parts of a dispersant and 0.5 to 3 parts of a wetting agent. The coating can be used through roll-coating, spray-coating and brush-coating technologies, has the surface contact angle of 110-145 degrees, has good water resistance and alkali resistance, prevents alkaliresistance abnormity in 48h, has excellent washability (for preventing bottom exposure after washing by 1200 times) and can be widely used in the field of high anti-fouling and self-cleaning buildingmaterial surface coatings.

Description

technical field

[0001] The invention belongs to the field of inorganic silicate coatings, in particular to a fluorine-containing titanium sol, inorganic silicate coatings and a preparation method thereof. Background technique

[0002] At present, the surface coatings of building materials are gradually developing in the direction of good decoration, strong stain resistance, good durability, green environmental protection and water-based. Inorganic silicate coatings use inorganic silicate as a film-forming substance, which has the advantages of rich raw material sources, good film-forming properties, high temperature resistance, aging resistance and no pollution, and meets people's requirements for building material surface coatings to have excellent performance. and environmental protection requirements. However, during the use of traditional inorganic silicate coatings, a series of problems such as cracking, powder falling, and even falling off often occur, and due to long...

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