双组份聚氨酯/水泥注浆加固材料的性能研究

Research on Property of Two-component Polyurethane/Cement Grouting Reinforcement Material

为了提高聚氨酯注浆材料耐高温及阻燃性能,通过添加不同分量的普通硅酸盐水泥和超细水泥到聚氨酯体系中,观察体系的凝胶时间和最高反应温度,测试其混合粘度、抗压强度、拉伸强度、粘接强度及氧指数。结果表明:在力学性能满足煤矿加固煤岩体用高分子材料行业标准的前提下,阻燃性能也达到行业要求,为煤矿等行业的安全生产提供了保障。

In order to improve the polyurethane （PU） grouting material for high temperature and flame retardant properties, we add different components of ordinary portland cement and superfine cement into polyurethane systems. We observe the gel time and maximum reaction temperature of system; test its mix viscosity, compressive strength, tensile strength, adhesive strength and oxygen index. The result shows that not only the mechanical properties of grouting material meet with industry standards of coal and rock reinforcement, but fire-retardant properties also meet the requirements for mining industry to provide a guarantee of safety in production.