Environment-friendly aqueous nanometer fireproof flame-retardant coating and preparation thereof

Abstract

The invention is environmental-friendly waterborne nanometer fireproof flame-retardant coating and the preparation method, which belong to the fireproof flame-retardant coating manufacturing industry. The flame-retardant coating is obtained through the compounding of two types of flame-retardant agents, waterborne resin, ammonium polyphosphate, melamine, carbon-forming agent, nanometer pigment and filler, micrometer pigment and filler and other auxiliary agent; the flame-retardant coating contains no organic agent and halogen flame retardant, low VOC content, good fireproof property, good physical and chemical properties; the composition of the flame-retardant coating is as follows: the content of waterborne resin is 10-90%; the content of phyllo-silicate nanometer flame retardant which contains phosphor, nitrogen organic intercalation is 1-50%; the content of nanometer magnesium hydroxide flame retardant wrapped by polymer is 1-50%; the content of ammonium polyphosphate is 1-30%; the content of melamine is 1-20%; the content of carbon-forming agent is 1-30%; the content of nanometer pigment and filler is 0.1 to 30%; the content of micrometer filler is 0.1 to 60%; the content of dispersant is 0.1 to 10%; the content of stabilizer is 0.1 to 10%; the content of water is 0.1 to 50%; the content of micrometer pigment is proper; firstly, waterborne resin, nanometer flame retardant, ammonium polyphosphate, melamine, carbon-forming agent, nanometer pigment and fillers, dispersant and stabilizer are put into a planet stirring reactor for stirring and even dispersion; micrometer pigment and filler, water, dispersant and stabilizer are added to the discharged mixture and then put into a high-speed dispersion machine for even dispersion so that the product is obtained.

Description

【Technical field】 [0001] The invention relates to an environment-friendly water-based nano fire-proof and flame-retardant coating and a preparation method thereof, is a new flame-retardant material used in the construction industry, and belongs to the chemical fire-proof and flame-retardant coating manufacturing industry. 【Background technique】 [0002] With the development of modern building technology, large buildings relying on steel structures, reinforced concrete columns, beams, and slabs have gradually occupied a dominant position, especially some public buildings such as stadiums, song and dance theaters, shopping malls, hotels, and office buildings. Steel structure building type. Because the commonly used building steel loses its bearing capacity at a critical temperature of 540°C, and when a fire breaks out in a building, the temperature of the fire site can reach about 1000°C within a few minutes, and the exposed steel will soon rise to 1000°C. Above the critical ...

AI Technical Summary

Problems solved by technology

Solvent-based fire-resistant and flame-retardant coatings will volatilize a large amount of toxic and harmful organic solvents, which will seriously affect the environment and workers' health, and there are fire hazards, which do not meet modern environmental protection requirements

However, there are many deficiencies in ordinary water-based fireproof and flame-retardant coatings, which are mainly manifested in: ① poor fireproof performance, poor coating strength after fire expansion, and will peel off, affecting fireproof performance

② Poor durability and aging resistance, the bonding force between the coating and the substrate will gradually decrease, and it is prone to peeling and pulverization, which will affect the fireproof performance

③There are smoke safety problems in case of fire

Ordinary water-based fire-resistant and flame-retardant coatings generally contain halogen-containing flame retardants such as decabromodiphenyl ether, which will produce strongly carcinogenic and toxic gases and smoke such as brominated diphenyl dioxins at high temperatures. Firefighters produce a lot of poison and cause serious pollution to the environment, which does not meet the high standards of international environmental protection requirements such as the RoHS directive

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