Environment-friendly fireproof coating for steel structure and preparation method thereof

Abstract

The invention discloses an environment-friendly fireproof coating for a steel structure. The coating is prepared from the following components in parts by weight: 20-30 parts of an oxadiazole silane-based ionic film-forming polymer, 10-15 parts of carboxyl-terminated hyperbranched polyester, 8-10 parts of sulfonated phenoxy cyclophosphazene, 3-5 parts of polyaromatic oxadiazole fiber powder, 8-12 parts of white cement, 3-5 parts of attapulgite, 2-4 parts of phosphorus pentoxide, 1-2 parts of a defoaming agent, 1-3 parts of a flatting agent and 0.5-1.5 parts of a dispersing agent. The invention further discloses a preparation method of the environment-friendly fireproof coating for the steel structure. The environment-friendly steel structure fireproof coating disclosed by the invention is remarkable in flame-retardant and fireproof effect, good in weather resistance and environment-friendly performance, strong in adhesive force with a steel substrate and good in damp-heat resistance.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an environmentally friendly fireproof coating for steel structures and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of economy and society, building materials have been continuously upgraded and replaced. Various large-scale buildings come one after another, and most of the main load-bearing components of these large-scale buildings rely on strong and light steel structures. These steel structures endow the buildings with a wide, light, simple, smooth and stable style. The main form of large buildings. As a type of building, steel structure is widely used for its advantages of light weight, high strength, good plasticity, short construction period, high flexibility and earthquake resistance, energy saving and environmental protection, especially in long-span structures and high-rise buildings. irreplaceable r...

AI Technical Summary

Problems solved by technology

However, the existing fire-resistant coatings for steel structures often only focus on fire-proof performance indicators, while environmental performance and weather resistance are insufficient.

Fireproof coatings for steel structures on the market still have more or less flame retardancy, poor fire resistance, moisture resistance, poor weather resistance, coatings are prone to cracking, powder removal and other undesirable phenomena, poor adhesion to steel substrates, and smoke Flaws for Security Issues

[0004] Patent document CN1986715A discloses a fireproof coating for tunnel steel structures, which is made of acrylic emulsion, 582 resin, AEC expansion cement, refractory cement as binder, sepiolite, expanded perlite, fly ash, light calcium carbonate, silicon Alumina fiber is inorganic heat-insulating filler, vermiculite, ammonium dichromate, melamine, pentaerythritol, and ammonium polyphosphate are foaming materials, and aluminum oxide, magnesium hydroxide, tin oxide, and ammonium borate are additives. The tunnel steel structure Fire retardant coatings have good adhesion and resistance to heat and humidity, but the fire retardant coatings for tunnel steel structures have complex components, and ammonia gas will be emitted during the stirring process, which is not conducive to environmental protection and the health of construction workers

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