Toughened epoxy adhesive modified with core-shell nanoparticles containing epoxy groups on the surface
The epoxy resins were toughened with reactive core-shell nanoparticles(CSNPs) with butyl acrylate (BA) as the core and methyl methacrylate (MMA) copolymerizing with glycidyl methacrylate (GMA) as the shell.The chemical structure of the CSNPs was characterized by FT-IR.The morphology of toughened epoxy networks were analyzed by SEM and TEM,and their adhesion properties were also detected.The results show that mixing methods and CSNP concentration have great influence on the morphology and adhesion properties of the toughened epoxy networks.CSNPs are uniformly dispersed in the epoxy resins by the grinding method.The modified epoxy networks obtained from the modified epoxy networks prepared by the grinding method(MEPN2) with 10 wt% CSNPs show the best adhesion properties,and the increase in maximum peel strength,25℃ sheer strength and 150℃ sheer strength of the modified epoxy networks is 401.3%,46.9% and 27.6% respectively over the unmodified epoxy networks due to the small-scale coagulations of CSNPs.
Core-shell nanoparticles Toughened epoxy adhesive Peel strength Sheer strength Mixing methods
Xugang Zhang Bin Zhang Mingming Sun Jianhui Li Lei Wang Xue Gang
College of Material Science and Chemical Engineering, Harbin Engineering University, Harbin,Heilongj Heilongjiang Institute of Petrochemistry, Harbin, Heilongjiang, China
国际会议
香港
英文
1375-1379
2012-07-27（万方平台首次上网日期，不代表论文的发表时间）