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硬质聚氨酯泡沫材料以其优良的物理和化学性能在国民经济各个领域发挥着重要作用,但在煤矿封堵加固中使用仍存在不足,必须对其进行增强和阻燃改性。主要介绍了近年来增强聚氨酯硬泡力学性能的方法和不同类型阻燃剂对其阻燃性能的影响,并总结了煤矿封堵加固聚氨酯硬泡增强、阻燃机理。
Due to its excellent physical and chemical properties, rigid polyurethane foam plays an important role in various fields of the national economy. However, there are still some shortcomings in the use of the reinforcement in the sealing and reinforcement of coal mines. It must be enhanced and flame-retardant modified. In this paper, the methods to enhance the mechanical properties of polyurethane rigid foams and the effects of different types of flame retardants on the flame retardancy of the polyurethane foams are introduced. The reinforcement and flame retarding mechanism of polyurethane rigid foams in the coal mines are summarized.