求翻译：虽然聚氨酯灌浆材料在地矿、建筑、水利等工程中得到了广泛的应用和发展，但其灌浆时蓄热温度高，存在冒烟、着火等安全隐患。本文重点研究了异氰酸酯指数、催化剂、预聚体对聚氨酯灌浆材料蓄热性能的影响。是什么意思？

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Although polyurethane grouting materials in the mining, construction, irrigation, and so widely used in construction and development, but its heat when temperatures are high, grouting exist such as smoke, fire safety hazards. This article focuses on isocyanates, catalyst, pre-assembled index of poly

Although the polyurethane grouting material in projects and so on geology and mining, building, water conservation obtained the widespread application and the development, when it is in the milk the regeneration temperature is high, the existence belches smoke, catches fire and so on the security hi

Although polyurethane Grouting material in geology and mineral resources, construction, Water Conservancy works in a wide range of applications and development, but its high heat temperature during filling, smoke, fire and other security risks. This article focuses on studies of isocyanate index, ca

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