水工用无溶剂聚氨酯填缝材料的制备及性能  

Preparation and properties of solvent-free polyurethane joint-sealing material for hydraulic engineering

作　　者：李翠玲 蒋冬阳 蒋学行 杜明 Li Cuiling;Jiang Dongyang;Jiang Xuexing;Du Ming(Henan Provincial Water Conservancy Research Institute,Zhengzhou 450003,Henan,China;Henan Keda Water Conservancy Survey and Design Co.,Ltd.,Zhengzhou 450003,Henan,China;Key Laboratory of Hydraulic Engineering Safety Technology of Henan,Zhengzhou 450003,Henan,China)

机构地区：[1]河南省水利科学研究院,河南郑州450003 [2]河南省科达水利勘测设计有限公司,河南郑州450003 [3]河南省水利工程安全技术重点实验室,河南郑州450003

出　　处：《中国胶粘剂》2022年第9期8-12,18,共6页China Adhesives

基　　金：河南省水利科技攻关计划项目(GG202243);河南省基本科研业务费项目。

摘　　要：以聚醚多元醇和异氰酸酯制备了一种水工用无溶剂聚氨酯填缝材料,探讨了不同原材料配比对A组分及填缝材料力学性能的影响。研究结果表明:固体填料中白炭黑添加量在1.8%~2.2%(相对于A、B组分总质量而言,下同)、碳酸钙添加量在18.5%~22.2%、粉煤灰添加量在16.3%~19.3%时,填缝材料的综合性能较好;液体填料中石油树脂添加量在4%~6%、增塑剂添加量在3%~4%之间时,填缝材料的综合性能较好;制备的水工用双组分聚氨酯填缝材料的拉伸强度≥2.0 MPa,断裂伸长率≥600%,弹性恢复率≥80%,满足了水利工程伸缩缝填缝技术的需要。A kind of solvent-free polyurethane joint-sealing material for hydraulic engineering was prepared with polyether polyol and isocyanate,and the effects of different raw material ratios on the mechanical properties of component A and joint-sealing material were studied.The research results showed that in the solid fillers,when the addition amount of silica was 1.8%-2.2%(relative to the total mass of components A and B,the following was the same),the addition amount of calcium carbonate was 18.5%-22.2%,and the addition amount of pulverized fuel ash was 16.3%-19.3%,the comprehensive performance of joint-sealing material was relatively excellent.In the liquid fillers,when the addition amount of petroleum resin was between 4%to 6%,and the addition amount of plasticizer was between 3%to 4%,the comprehensive performance of joint-sealing material was relatively excellent.The tensile strength of the prepared two-component polyurethane joint-sealing material for hydraulic engineering was not less than 2.0 MPa,the elongation at break was not less than 600%,and the elastic recovery rate was not less than 80%,which could meet the needs of the expansion joint-sealing technology of hydraulic engineering.

关 键 词：聚氨酯 变形缝 填缝材料 无溶剂 防渗 

分 类 号：TQ437[化学工程]