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自1971年以来,联邦德国煤炭工业研究中心——矿山研究有限公司对聚氨酯进行了广泛研究,在许多情况下证实聚氨酯的应用在技术上是可行的,经济上是合理的,能满意地解决岩层加固和堵水问题。注浆用聚氨酯正在日益为全世界采矿企业所采用。聚异氰酸酯与多羟基化合物聚合生成聚氨酯,其特性变化很大,取决于添加的特别成分和形成方式(表1),可能成为软泡沫、弹性材料和抗压强度较高的材料。在聚异氰酸
Since 1971, extensive research on polyurethanes has been conducted by the Federal German Coal Industry Research Center - Minerals Research Ltd. It is in many cases proven that the use of polyurethanes is technically feasible, economically justified and satisfactorily resolved Reinforcement and plugging problems. Grouting polyurethanes are increasingly being adopted by mining companies worldwide. Polyisocyanates polymerize with polyols to form polyurethanes, which vary greatly in properties and may become soft foams, elastomers, and materials of high compressive strength, depending on the particular ingredients added and the manner of formation (Table 1). In polyisocyanate