【摘要】 聚氨酯泡沫塑料应用在预防煤层自燃领域,可有效地封堵漏风、预防及处理采空区的浮煤自燃。但是目前应用的聚氨酯存在成本偏高,材料柔韧性差等问题,影响了其应用效果。通过实验对聚氨酯泡沫塑料的性能进行了改进,降低了该材料的成本,提高了其柔韧性。更多还原

【Abstract】 The polyurethane foams are applied in the area of preventing spontaneous combustion of coal seam,which effectively plug leakage and prevent spontaneous combustion of floats in gob. but the high cost and bad flexibilty influnce the application effect of plyurethane. The text improves the properties of polyurethane foam,reduces the cost of material and improves the flexibility by experiment.更多还原