用于公路工程的聚氨酯密封胶研究进展

Research progress of polyurethane sealant for highway engineering

本文主要归纳了聚氨酯材料作为路用密封胶的研究进展,包含聚氨酯密封材料的概述及反应机理、主要组成材料(多异氰酸酯、多元醇、扩链交联剂、催化剂以及填料等)、性能评价(宏观、微观、分子动力学模拟等)、新型聚氨酯密封胶种类(如改性聚氨酯密封胶、生物基聚氨酯密封胶、无溶剂聚氨酯密封胶等),并概述了聚氨酯密封胶在公路工程中的实际应用情况。最后,提出了目前聚氨酯密封胶研究中存在的问题,并对发展趋势进行了展望。

In this paper,the research progress of polyurethane materials as road sealant,including the overview of polyurethane sealing materials and their reaction mechanisms,main components of materials(polyisocyanates,polyols,chain extenders,catalysts,and fllers,etc.),performance evaluation(macro,micro,molecular dynamics simulations,etc.),new types of polyurethane sealant(such as modified polyurethane sealant,bio-based polyurethane sealant,solvent-free polyurethane sealant,etc.)was mainly concluded,and the practical application of polyurethane sealant used in highway engineering was summarized.Finally,the problems existing in the research of polyurethane sealant were put forward,and the development trend was prospected.