双组分PU密封剂与水泥基材的粘接性能及其特征分析  

Bonding properties and characteristic analysis between two-components PU sealant and concrete substrate

作　　者：王兴无[1] 冯龙[2] 

机构地区：[1]重庆三峡学院土木工程学院,重庆404100 [2]长安大学材料科学与工程学院,陕西西安710064

出　　处：《中国胶粘剂》2013年第10期20-22,38,共4页China Adhesives

摘　　要：以双组分PU(聚氨酯)密封剂与混凝土砂浆基材的粘接强度作为考核指标,探讨了不同养护温度、界面干湿条件等对PU密封剂/混凝土砂浆基材粘接性能的影响,并对其粘接机制进行了分析,解释了不同养护条件所带来的试验结果的差异性。结果表明:温度、不同干湿界面对双组分PU密封剂的粘接拉伸强度有较大的影响,在使用过程中应尽量避免潮湿界面和低温环境。With bonding strength between two-components PU(polyurethane) sealant and concrete mortar substrate as evaluation index,the influences of different curing temperatures and dry-wet interface conditions on the bonding properties of PU sealant/concrete mortar substrate were discussed,and its bonding mechanism was analysed,and the difference of experiment results was explained from different curing conditions.The results showed that the influences of temperatures and different dry-wet interfaces on the bonding tensile strength of twocomponents PU sealant were greater,and the wet interface and low temperature environment should be avoided in the application process.

关 键 词：双组分 聚氨酯 密封剂 胶粘剂 灌封材料 粘接性能 

分 类 号：TQ436.6[化学工程] TQ433.432