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

A technology for spraying polyurethane and smoke suppressant, applied in the field of halogen-free flame retardant, can solve the problems of reducing the amount of smoke, serious migration, shortening the service life of materials, etc. Effect

Active Publication Date: 2015-05-20
山东奥卓新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 reduce the mechanical properties of the prepared polyurethane foam material, and the migration problem will be more serious, shortening the service life of the material
Inorganic flame retardants have the characteristics of smoke elimination and non-toxicity, and have no effect on the rising speed of sprayed polyurethane foam raw materials, but usually need to be added in a very high amount to have the required flame retardant effect
In addition, the dispersibility of inorganic flame retardants in polyether composite materials is generally poor, which deteriorates the preparation process of spray polyurethane foam, and the strength of foam materials prepared by using them in large quantities will also decrease

Method used

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

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Embodiment Construction

[0037] The preparation method of flame retardant and smoke suppressant for spraying:

[0038] (1) 10gCe(NO 3 ) 3 6(H 2 0) be dissolved in 1000ml deionized water, then add 100g sodium montmorillonite and 0.1mol / L sodium dodecylsulfonate solution 30ml, under stirring condition, slowly drip concentration is the ammoniacal liquor 200ml of 0.4mol / L, Make Ce(NO 3 ) 3 6(H 2 O) Completely generate white Ce(OH) 3 Precipitate, disperse and adsorb on the interlayer or surface of sodium montmorillonite, then add 1.0g of hydrogen peroxide, stir at 60°C for 30 minutes, and make Ce(OH) 3 Oxidized to reddish-brown peroxide Ce(OH) 3 OOH; then heated to 90°C for 60 minutes to make Ce(OH) 3 OOH gradually changes to yellow Ce(OH) 4 , then filter out the solid matter, wash with deionized water for 3 times, put it into a blast oven for drying, the drying temperature is 200° C., and the drying time is 2 hours, so as to obtain the sodium-based montmorillonite adsorbed with cerium hydroxide; ...

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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...

Claims

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Application Information

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IPC IPC(8): C08L61/28C08K13/06C08K3/34C08K3/22C08K7/24C08L75/08C08J9/14C08G18/50
Inventor 张旭东周思伟李杰汪军
Owner 山东奥卓新材料有限公司
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