A kind of flame-retardant rigid polyurethane foam material and its preparation method and application

Abstract

The invention belongs to the field of preparation of chemical retardation materials, and in particular relates to a flame-retardant rigid polyurethane foam material and its preparation method and application. The material includes mixture A and mixture B, and the mixture A includes the following components in parts by weight: 77.47-100 parts of polyol, 0-22.53 parts of ethylene glycol phosphinate, 1 part of amine catalyst, organic tin 0.5 parts of catalyst, 2 parts of water, 2 parts of foam stabilizer, 3 parts of triethanolamine; the mixture B includes the following components in parts by weight: 149-152 parts of isocyanate, 0-20.25 parts of expandable graphite, 0-20.25 parts of phosphate part, 0-7.5 part of fly ash. The flame-retardant rigid polyurethane foam material obtained in the present invention integrates condensed phase flame-retardant, gas-phase flame-retardant and physical flame-retardant effects of expanded graphite, and adds fly ash with synergistic flame-retardant effect and excellent adhesive performance, so that Rigid polyurethane foam has excellent flame retardant properties and can not only be used as a chemical retardant material for preventing coal spontaneous combustion, but also as a sealing material and insulation material.

Description

technical field [0001] The invention belongs to the field of preparation of chemical retardation materials, and in particular relates to a flame-retardant rigid polyurethane foam material and its preparation method and application. Background technique [0002] my country is a big energy consuming country, and the production and consumption of coal are among the top in the world. However, in the process of coal seam mining, a large amount of coal has the problem of spontaneous combustion. In addition, coal may spontaneously ignite during storage and transportation, which may cause fire accidents, causing serious casualties and huge economic losses. During the combustion of coal, gases such as carbon monoxide and sulfur dioxide will also be produced, which will cause certain pollution to the environment. In short, the spontaneous combustion of coal limits the safe mining, transportation and storage of coal. Therefore, it is imperative to prevent coal spontaneous combustion...

AI Technical Summary

Problems solved by technology

[0005] Patent CN 109111558 A discloses a low-smoke, low-toxicity flame-retardant rigid polyurethane foam material, which consists of 100 parts of polyol, 140-260 parts of isocyanate, 0-35 parts of phosphate ester, 0-50 parts of flame-retardant polyol, inorganic 10-45 parts of fuel compound, 2-5 parts of blowing agent, 0.5-2 parts of catalyst, 0.5-5 parts of foam stabilizer; and the amount of phosphate ester and flame-retardant polyol is not equal to 0 ; Phosphate plays the role of gas phase flame retardant; flame retardant polyol is a reactive flame retardant, which can reduce the addition of phosphate ester and inorganic flame retardant while playing the role of flame retardant. The inorganic flame retardant compound mainly It plays the role of condensed phase flame retardancy and smoke suppression and detoxification, but due to the use of a large amount of chlorine-containing flame retardants, a large amount of hydrogen chloride is produced during the combustion process, which is not conducive to environmental protection and personnel evacuation and escape

In addition, since this organic flame retardant is expensive, it does not have a cost advantage

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