煤矿用无机盐改性聚氨酯注浆材料的研究

Polyurethane grouting materials modified by inorganic salts in coal mines

通过硅酸盐对传统聚氨酯注浆材料进行了改性研究,研发出既能保留聚氨酯材料本身优异的力学性能又避免其可燃等安全性能的缺点,适合矿山井下使用的改性聚氨酯注浆材料。该材料固化后形成有机相(聚氨酯网络)—无机相(无机硅酸网络)三维结构互穿网络,得到的固结体具有优异的力学特性。研发的注浆材料强度高、不受环境湿度等影响,具有无毒、高闪点、不可燃等特性。在矿山井下煤岩体加固方面具有一定优越性,在一定程度上可以替代目前纯聚氨酯注浆材料,为现代化煤炭企业实现高产高效提供了技术支持。

The traditional polyurethane grouting materials modified by silicate are studied and modified,which retain the excellent mechanical properties of the polyurethane material.The modified polyurethane grouting materials can avoid combustible safety performance shortcomings and is suitable for underground mines.The materials are cured to form three-dimensional interpenetrating network of organic phase（polyurethane network） and inorganic phase（inorganic silicate network）.The obtained solidification body has excellent mechanical properties.The modified non-toxic grouting materials have high strength with no impact from environmental humidity,high flash point and non-combustible characteristics.To a certain extent,the modified grouting materials can replace the pure polyurethane grouting materials,and may provide technical support for the modernization of coal enterprises to achieve high yield efficiently.