Abstract:

In view of the potential risk of runaway reaction heat in the engineering application of current polyurethane grouting materials for mining, it is of great practical significance to explore innovative and efficient polyurethane material modification technology. In this work, the causes of runaway reaction heat of polyurethane grouting materials were analyzed with a focus on the intrinsic performance defects of polyurethane materials, such as high exothermic heat, strong heat storage and poor flame retardancy, which were mainly explained as the internal causes of the runaway reaction heat, and the external causes such as environment, system and personnel were also introduced. Focusing on the internal causes of runaway reaction heat, the research progresses of polyurethane modification both domestically and internationally in recent years were reviewed from the perspective of the control of reaction heat release and heat storage temperature as well as the modification of flame-retardant property. Finally, in terms of the innovation of polyurethane material modification methods and the management of product safety access systems combining with the existing technical problems in material modification research, the reasonable outlooks were made on deepening the safety and green environmental protection application of polyurethane grouting materials in mines.

Key words: grouting materials for mining, polyurethane, reaction heat, flame retardant, thermal conductivity

摘要：

针对目前矿用聚氨酯注浆材料在工程应用中潜在的反应热失控隐患问题，探索创新高效的聚氨酯材料改性技术具有重大的现实意义。本文分析了引发聚氨酯注浆材料反应热失控的原因，重点阐述了聚氨酯材料的本征性能缺陷，如固化反应放热量大、体系蓄热温度高以及阻燃性能差等内在因素，同时对环境、制度和人员等外在因素也进行了介绍。聚焦引发反应热失控的内在因素，综述了近年来国内外研究者围绕聚氨酯材料反应放热控制、体系蓄热温度控制和阻燃性能改性等领域取得的研究进展。最后围绕聚氨酯材料改性方法创新和产品安全准入制度管理两个方面进行总结，并结合目前材料改性研究存在的技术问题，对深化矿用聚氨酯注浆材料在煤矿井下的安全和绿色环保应用进行了合理的展望。

关键词: 矿用注浆材料, 聚氨酯, 反应热, 阻燃性能, 导热性能