High-flame-retardant building external wall thermal insulation material and preparation method thereof

Abstract

The invention provides a high-flame-retardant building external wall thermal insulation material and a preparation method thereof. The preparation method comprises the following production steps of S1, taking and placing polyether polyol, isocyanate, a modifier, a foaming agent, a flame retardant and a smoke suppressant in a working reaction kettle of foaming equipment, and conducting stirring for 0.5-2 hours; S2, transferring the modified polyether polyol into a foaming stirring barrel of foaming equipment; S3, adding isocyanate in a preset weight percentage into the foaming stirring barrel of the foaming equipment, and uniformly stirring the modified polyether polyol and the isocyanate in the foaming stirring barrel at a high speed to prepare a mixed raw material; S4, pouring the mixed raw materials into a cavity of the foam board mold by the foaming equipment, and conducting standing for 1-8 hours; and S5, taking out the flame-retardant polymer thermal insulation foam board to obtain the flame-retardant polymer thermal insulation foam board. The flame-retardant modification is scientifically improved, and the fire safety requirement of the external wall thermal insulation material is met, so that the fire hazard behavior of a building is reduced.

Description

technical field [0001] The invention belongs to the field of macromolecular materials, and in particular relates to a high flame-retardant building exterior wall thermal insulation material and a preparation method thereof. Background technique [0002] Building energy conservation is a key area in the implementation of the national energy conservation and emission reduction strategy. In recent years, the research and application of thermal insulation materials have attracted much attention. Organic thermal insulation materials are widely used in our country because of their superior thermal insulation properties. In recent years, polymer insulation materials have also been vigorously promoted in my country, and the consumption has increased rapidly year by year. Compared with other insulation materials, polymer materials have lower thermal conductivity, more energy-saving and environmental protection, and the production process is relatively simple, the construction perio...

AI Technical Summary

Problems solved by technology

Not only that, due to its porous structure and composed of a large number of hydrocarbon chain segments, a large amount of toxic smoke will be produced during the combustion process, which is the chief culprit of fire deaths, and the smoke is even more harmful than the heat radiation produced. Seriously, so traditional polymer foam materials do not meet the flame retardant requirements of national standards

The traditional solution is to add a large amount of additive flame retardants. Although some effects have been achieved, there are still problems that cannot meet the A-level flame retardant standard.

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