A kind of geopolymer-based antibacterial coating and its preparation method and application

Abstract

The invention discloses a geopolymer based antibacterial coating and preparation method and application. The coating is composed of, by weight, 15-50 parts of component A, 20-70 parts of component B and 10-50 parts of component C, the component A is composed of 40-80 parts of geopolymer gel base material and 20-60 parts of pigment and filler, the component B is composed of 40-85 parts of alkali activator, 0-15 parts of curing regulator, 0-6 parts of rheological modifier and 12-45 parts of water, and the component C is composed of 70-100 parts of antibacterial telomer and 0-30 parts of silane modifier. The coating is free of VOCs, environment-friendly, healthful and excellent in corrosion-resistant performance; more importantly, the coating can effectively inhibit growth and propagation ofmicroorganisms, has the advantage of being efficient in fouling resistance and is suitable for water resistance, corrosion resistance, bacteria resistance and biofouling resistance of cultural relics,buildings, steel structures for freshwater breeding and concrete surface.

Description

technical field [0001] The invention belongs to the field of functional coatings, in particular to a geopolymer-based antibacterial coating and its preparation method and application. Background technique [0002] Geopolymer is a new type of water-based inorganic gel material produced by the reaction of solid aluminosilicate and high-concentration alkali solution. As an inorganic material, geopolymers have a unique polymer-like bonded structure. Therefore, geopolymer has the advantages of both inorganic materials and polymer materials. It has a dense molecular structure and good corrosion resistance; it has high mechanical strength, good heat resistance, and has excellent compatibility with concrete, stone, ceramics and other substrates. Excellent bonding ability; more importantly, geopolymer has the advantage of zero VOCs, and its raw material mainly comes from natural clay, which is a very potential environment-friendly inorganic coating. At present, as a new type of coa...

AI Technical Summary

Problems solved by technology

However, the above-mentioned coatings are generally based on organic coating systems. In terms of environmental protection and low toxicity, the above-mentioned coatings are difficult to compare with inorganic geopolymer coatings.

On the other hand, organic coatings with both anti-corrosion and anti-bacterial functions often require complex molecular design and synthesis processes, which limits the development of this new type of coating.

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