改性环氧树脂注浆材料性能研究与应用  

Performance Research and Application of Modified Epoxy Resin Grouting Material

作　　者：李波 谢世伟 亓帅 刘畅 张晓 龚塞 蒋亚军 Li Bo;Xie Shiwei;Qi Shuai;Liu Chang;Zhang Xiao;Gong Sai;Jiang Yajun(Jiangsu Bolikang New Material Technology Co.,Ltd.,Nanjing,Jiangsu 211103,China;Jiangsu Subote New Materials Co.,Ltd.,Nanjing,Jiangsu 211103,China)

机构地区：[1]江苏博力康新材料科技有限公司,江苏南京211103 [2]江苏苏博特新材料股份有限公司,江苏南京211103

出　　处：《中国建筑防水》2024年第12期20-25,共6页China Building Waterproofing

基　　金：国家自然科学基金青年基金项目(52008188),编号:2021YFF0500803。

摘　　要：采用聚乙二醇单甲醚(MPEG)与TDI反应生成的预聚物对环氧树脂进行了接枝改性,研究了TDI-MPEG添加量对接枝改性环氧树脂接枝率、冲击强度、拉伸性能和压缩性能的影响,结果表明:柔性TDI-MPEG链段有效接枝到环氧树脂基体中,接枝率达62%~80%;接枝改性环氧树脂的冲击强度、断裂伸长率随TDI-MPEG添加量的增加而显著增大。表明柔性TDI-MPEG对环氧树脂具有良好的增韧效果,能够拓宽材料在混凝土动态裂缝、接缝注浆防水密封工程中的应用,有效加强建筑接缝处的防水持久性。Polyethylene glycol monomethyl ether(MPEG)and TDI are used to generate pre-polymers for grafting modification of epoxy resin.The effect of TDI-MPEG addition on the grafting rate,impact strength,tensile properties and compression properties of graft modified epoxy resin is studied.The results show that flexible TDI-MPEG segment is effectively grafted into the epoxy resin matrix,with a grafting rate of 62%to 80%;the impact strength and elongation at break of graft-modified epoxy resin significantly increase with the increase of TDI-MPEG addition.This indicates that flexible TDI-MPEG has a good toughening effect on epoxy resin,which can broaden the application of the material in concrete dynamic cracks,joint grouting for waterproofing and sealing,and effectively enhance the waterproofing durability of building joints.

关 键 词：环氧树脂 接枝改性 聚乙二醇单甲醚 接枝率 冲击强度 拉伸性能 压缩性能 

分 类 号：TU578[建筑科学—建筑技术科学] TU502