摘要
Urea-formaldehyde microcapsule was produced by means of one step in-site polymerization.Optical microscope, scanning electron microscope and laser scanning confocal microscope (fluorescence tagged microcapsule shell) were used to analyze the size, shell thickness and structure of the microcapsule.The mechanical properties of the microcapsule was tested and analyzed by nano indentation test.The results showed that the dispersed and integrated microcapsules of 100 μm in diameter and 10 μm in shell thickness were produced with 45% core content.Young’s modulus of the microcapsule was a little lower than that of epoxy resin.When damage occurred in the epoxy resin matrix, the crack could rupture the microcapsule and release the repairing agent.
Urea-formaldehyde microcapsule was produced by means of one step in-site polymerization.Optical microscope, scanning electron microscope and laser scanning confocal microscope （fluorescence tagged microcapsule shell） were used to analyze the size, shell thickness and structure of the microcapsule.The mechanical properties of the microcapsule was tested and analyzed by nano indentation test.The results showed that the dispersed and integrated microcapsules of 100 μm in diameter and 10 μm in shell thickness were produced with 45% core content.Young’s modulus of the microcapsule was a little lower than that of epoxy resin.When damage occurred in the epoxy resin matrix, the crack could rupture the microcapsule and release the repairing agent.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2008年第6期1595-1599,共5页
CIESC Journal
基金
国家自然科学基金项目(50775222,50735006)
装备预先研究项目(513270401)
重点实验室装备预研基金项目(9140C85020406)~~
关键词
微胶囊
自修复
微纳力学性能
microcapsule
self-repairing
micro and nano mechanical properties
