Qin Langtian, Kou Dingtao, Jiang Xiao, Yang Shaoshuai, Hou Ning, Huang Feng
School of Engineering and Technology, China University of Geosciences Beijing, Beijing 100083, China.
School of Emergency Management and Safety Engineering, China University of Mining and Technology, Beijing 100083, China.
Polymers (Basel). 2025 Aug 27;17(17):2313. doi: 10.3390/polym17172313.
Polyurethane grouting materials are polymer materials formed through the reaction of polyisocyanates and polyols. They play important roles in underground engineering, tunnel construction, and mining due to their fast reaction rate, high bonding strength, and excellent impermeability. However, traditional polyurethane grouting materials have shortcomings such as high reaction heat release, high brittleness, and poor flame retardancy, which limit their applications in high-demand engineering projects. This paper systematically reviews the research progress on modified polyurethane grouting materials. Four major modification technologies are summarized: temperature reduction modification, flame retardant modification, mechanical enhancement, and environmental adaptability improvement. A multi-dimensional performance characterization system is established, covering slurry properties, solidified body performance, microstructure characteristics, thermal properties and flame retardancy, diffusion grouting performance, and environmental adaptability. The application effects of modified polyurethane grouting materials in grouting reinforcement, grouting water plugging, and grouting lifting are analyzed. Future development directions are projected. This review is particularly valuable for researchers and engineers working in tunneling, mining, geotechnical engineering, and infrastructure rehabilitation.
聚氨酯灌浆材料是由多异氰酸酯和多元醇反应形成的高分子材料。由于其反应速度快、粘结强度高、抗渗性好，在地下工程、隧道建设和采矿中发挥着重要作用。然而，传统的聚氨酯灌浆材料存在反应热释放高、脆性大、阻燃性差等缺点，限制了它们在高要求工程项目中的应用。本文系统地综述了改性聚氨酯灌浆材料的研究进展。总结了四种主要的改性技术：降温改性、阻燃改性、力学增强和环境适应性改善。建立了一个多维度的性能表征体系，涵盖浆液性能、固化体性能、微观结构特征、热性能和阻燃性、扩散灌浆性能以及环境适应性。分析了改性聚氨酯灌浆材料在灌浆加固、灌浆止水和灌浆顶升中的应用效果。预测了未来的发展方向。这篇综述对从事隧道工程、采矿、岩土工程和基础设施修复的研究人员和工程师具有特别重要的价值。
