单组份水溶性聚氨酯灌浆材料研究

Research of one-component water-soluble polyurethane grouting material

采用亲水性聚醚多元醇与TDI反应合成了单组份水溶性聚氨酯灌浆材料，研究了NCO含量、溶剂用量、缓凝剂用量对灌浆材料性能的影响。结果表明，NCO含量在7％～11％、溶剂用量在15％～25％、缓凝剂用量在2％左右时，制备的单组份水溶性聚氨酯灌浆材料性能较好，适用于工程的快速堵水或潮湿基面的防护。

One-component water-soluble polyurethane grouting material was prepared by hydrophilic polyether polyols with toluene diisocyanate,the influence of the various-NC0 content of prepolymer,the amount of solvent and the amount of retarder on the properties of grouting materials have been studied. Results show that when the NCO% content of 7%-11%,the amount of solvent at 15%~25%,the retarder amount of about 2%,the one-component water-soluble polyurethane grouting material was the best performance,suitable for fast water blocking and protection of wet substrate in engineering.