Flame-retardant smoke inhibitor for sprayed polyurethane foam as well as preparation method and application of flame-retardant smoke inhibitor

Abstract

The invention relates to a flame-retardant smoke inhibitor for sprayed polyurethane foams as well as a preparation method and application of the flame-retardant smoke inhibitor, and belongs to the technical field of halogen-free flame retardant. By virtue of inorganic-organic synergistic flame retardant, cerium hydroxide/magnesium hydrate synergistic flame retardant, silicon/nitrogen/phosphorus synergistic flame retardant and intumescent flame retardant techniques and a surface modification technique, the flame-retardant smoke inhibitor is free of halogen and has the characteristics of small addition amount in a sprayed polyurethane foam foamed raw material, good dispersibility, small starting speed influence on the sprayed polyurethane foam foamed raw material and the like. The flame retardant grade of the sprayed polyurethane foam foamed raw material with the flame-retardant smoke inhibitor can be B1 grade, the sprayed polyurethane foam foamed raw material also has the characteristics of low combustion smoke density and environment-friendliness, and the mechanical property can meet the use requirements. The sprayed polyurethane foam foamed raw material with the flame-retardant smoke inhibitor is a relatively ideal fireproof heat-preservation material and has relatively good economic and social benefits.

Description

technical field [0001] The invention relates to a flame retardant and smoke suppressant for spraying polyurethane foam, a preparation method and application thereof, and belongs to the technical field of halogen-free flame retardant. Background technique [0002] Polyurethane foam insulation materials, due to their excellent thermal insulation, bonding, waterproof, aging resistance and other characteristics, are in increasing demand in the application of building exterior wall insulation materials. The polyurethane foam insulation material prepared by spraying process not only has simple construction process, high efficiency and good dimensional stability, but also retains all the advantages of polyurethane foam material, and has been widely used in external wall insulation construction. But it still has the disadvantages that polyurethane foam is flammable in case of fire, the flame spreads quickly, and produces a large amount of dense smoke and toxic gas in the fire. Acco...

AI Technical Summary

Problems solved by technology

Based on 100 parts of the raw material polyether, more than 25 parts of this kind of flame retardant need to be added, and the flame retardant performance of the prepared polyurethane foam can meet the requirements, but too much addition will lead to a rapid rise of spray polyurethane foam raw materials. Slow down, it will flow after spraying, resulting in poor uniformity of the polyurethane foam produced, and this type of flame retardant has no effect on reducing the amount of smoke generated by the combustion of sprayed polyurethane foam, and halogen flame retardants even increase the generation of toxic gases

In addition, if the content of organic flame retardant is too high, it will also significantly

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