A kind of inorganic fireproof and heat insulation coating and preparation method thereof

Abstract

The invention discloses an inorganic fireproof and heat insulation coating and a preparation method thereof. The coating is prepared from components in percentage by weight as follows: 4%-18% of silica sol, 10%-30% of magnesium oxysulfate cement, 3%-6% of bentonite, 4%-15% expanded perlite micropowder, 2%-5% of basic magnesium sulfate whiskers, 5%-20% of diatomaceous earth, 6%-35% of light calciumcarbonate, 0.1%-0.6% of citric acid, 0.01%-0.8% of a dispersing agent, 0.2%-5% of emulsion, 0.01%-0.2% of a defoamer, 0.01%-0.5% of a preservative, 0.01%-0.6% of a leveling aid, 0.1%-0.5% of a waterretaining agent and 0.1%-0.4% of a water repellent. The components are mixed and stirred in proportion during preparation. The coating has the characteristics of light weight, non-combustibility, heatinsulation and sound absorption, can be applied to surfaces of various inorganic structures, wooded structures and steel structures and can be well applied to the field of fireproof coatings.

Description

technical field [0001] The invention relates to an inorganic fireproof and heat-insulating paint and a preparation method thereof, belonging to the technical field of special materials. Background technique [0002] The fire is mainly due to the lack of protection of low-flammability substances. If a high-temperature-resistant coating can be applied to the surface of furniture to reduce the flammability of the surface of the coated material and retard the rapid spread of the fire, it can be used to increase the fire-resistant limit of the coated material. It will effectively protect low ignition point substances, delay or prevent the occurrence of fire. Therefore, the application space of fire-proof coatings is very large, and the coatings suitable for various buildings with high-efficiency fire protection have great development value. [0003] From the perspective of the composition of fire retardant coatings, it can be divided into two types: one is composed of organic an...

AI Technical Summary

Problems solved by technology

[0003] From the perspective of the composition of fire retardant coatings, it can be divided into two types: one is composed of organic and inorganic substances. This kind of fire retardant coating has poor aging resistance and degradation performance, and may not achieve fire protection effect after being oxidized for a long time. , and produce a large amount of toxic smoke, even if a large amount of flame retardant is added, its fire performance is still not ideal (because the boiling point of general flame retardant is less than 300°C, when a fire occurs, the ambient temperature can be as high as 1000-1200°C, and the flame retardant will volatilize )

However, the development of fire retardant coatings in our country is relatively late, and the product competitiveness is not strong, so there is an urgent need to develop high-quality fire retardant coatings