聚氨酯硬质泡沫阻燃技术研究及趋势

随着聚氨酯硬质泡沫在各个工程领域的广泛应用,其阻燃性能日益受到关注.本文介绍了近期国内外聚氨酯泡沫阻燃研究现状,分析了聚氨酯泡沫阻燃机理和阻燃方法研究趋势,阐释了两种阻燃方法的阻燃效果,通过对聚氨酯分子进行结构改性,同时添加复合阻燃剂,使聚氨酯硬质泡沫氧指数达到国家难燃级标准,展望了聚氨酯泡沫阻燃技术发展方向.

Discussion about the Trend of Flame-retardant Technique of Using Rigid Polyurethane Foams

With the widespread application of rigid polyurethane foams in various engineering fields,their flameretardant properties are receiving attention increasingly.This article introduces the development of the research of flame-retardant technique by using polyurethane foams at home and abroad.It analyzes the flame-retardant mechanism by using polyurethane foams and the trend of the research of flame-retardant methods.The paper mainly explains the flame-retardant effect by the combined use of two flame-retardant methods: by the structural modification of the polyurethane molecules and adding compound flame-retardant agent,the oxygen index of the polyurethane foams can be made to reach the national flame-resisting standard.The paper also envisages the prospect of flame-retardant technique by using polyurethane foams.