摘要
以聚醚多元醇和MDI制备异氰酸酯预聚体,以芳香胺和聚醚多元醇为固化交联剂,制备一种双组分高强度聚氨酯防水涂料,其拉伸强度3.5～10MPa,断裂伸长率450%～600%,与混凝土界面粘结强度≥2.5MPa,满足客运专线桥梁混凝土桥面防水层的技术要求。
A two-component high strength polyurethane waterproofing coating was prepared by isocyanate prepolymer and curing cross linker, the former being polymerized by polyether polyol and MDI and the latter made by aromatic amine and polyether polyol. The coating meets technical specification for concrete bridge deck waterproofing course of special passenger railway lines with its tensile strength of 3.5-10 MPa, extensibility at break of 450%-600%, and bond strength with concrete of more than 2.5 MPa.
出处
《中国建筑防水》
2008年第8期12-14,共3页
China Building Waterproofing
关键词
双组分聚氨酯防水涂料
高强度
高速铁路
two-component polyurethane waterproofing coating
high strength
high speed railway
