Steel structure surface fireproof spray paint

Abstract

The invention relates to a steel structure fireproof spray paint. The fireproof spray paint is characterized by being prepared from, by weight, 26-47 parts of an acrylic emulsion, 10-15 parts of a vinyl acetate-ethylene copolymer emulsion, 6-18 parts of expanded graphite, 8-11 parts of low-density polyethylene, 2-11 parts of ammonium polyphosphate, 4-11 parts of carbon fibers, 5-11 parts of silicon nitride fibers, 21-33 parts of water, 11-16 parts of hydroxy acrylic resin, 12-16 parts of polyurethane resin, 1-2 parts of monopotassium phosphate, 6-9 parts of pentaerythritol, 6-11 parts of melamine phosphate, 11-13 parts of white carbon black, 6-9 parts of sodium silicate, 1-2 parts of a dispersing agent, 12-18 parts of sec-butyl acetate and 2-4 parts of dithiocarbamate. The fireproof paint is composed of non-toxic or low-toxicity raw materials, the curing speed of the fireproof paint is high, and a paint film has excellent flame retardance, wear resistance, corrosion resistance and waterproofness, so that the steel structure is protected, and the use environment of the paint is guaranteed.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a fireproof spray paint on the surface of a steel structure. Background technique [0002] As a form of high-rise building structure, steel structure shows strong vitality in super high-rise and long-span buildings due to its high strength, light weight, good extensibility, earthquake resistance and short construction period. It is more and more widely used in the construction industry. However, the fire resistance of steel structure buildings is worse than that of traditional masonry structures and reinforced concrete structures. The mechanical strength of steel decreases rapidly with the increase of temperature, and quickly loses its supporting capacity, resulting in the collapse of buildings. Therefore, the protection of steel structures It must be done. Brushing or spraying fireproof paint (or fireproof paint) on the surface of steel structures is one of the comm...

AI Technical Summary

Problems solved by technology

Thin-coated steel structure fireproof paint can be divided into two types: solvent-based and water-based. Solvent-based fireproof paint uses a large amount of organic solvents in the production and construction process, which is harmful to the environment and construction personnel. Water-based fireproof paint is environmentally friendly and meets low pollution , the development direction of environmentally friendly coatings, but the research in our country started relatively late, and there is still a certain gap with solvent-based fireproof paints in terms of physical and chemical properties and weather resistance

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