潜伏性2MMZ-PS微胶囊固化剂的制备与表征  

Preparation and characterization of 2MMZ-PS microcapsule-type latent curing agent

作　　者：史有强[1] 张秋禹[1] 尹雅楠[1] 尹常杰[1] 张宝亮[1] 顾军渭[1] 

机构地区：[1]西北工业大学理学院,陕西西安710072

出　　处：《化工学报》2011年第9期2651-2656,共6页CIESC Journal

基　　金：国家自然科学基金项目(50773063);国家重点基础研究发展计划项目(2010CB635111);西北工业大学基础研究基金项目(G9KY1020);西北工业大学研究生创业种子基金项目(Z2010076)~~

摘　　要：以2-甲基咪唑(2MMZ)为芯材,聚苯乙烯(PS)为壁材,采用溶剂挥发技术,制备了一种新型潜伏性2MMZ-PS微胶囊固化剂。通过红外光谱仪(FT-IR)、热重分析仪(TGA)、扫描电子显微镜(SEM)、粒度分析仪和差热扫描量热仪(DSC)对微胶囊固化剂的化学结构、芯材含量、表面形貌、粒径分布及固化性能等进行了表征。所制备的微胶囊固化剂表面光滑,粒径分布较窄,平均粒径约为10.18μm,芯材2MMZ含量为40.36%。由微胶囊固化剂与环氧树脂E-51制备的单组分胶黏剂,具有优良的固化特性和潜伏性能,可在100℃下1h内实现固化,室温储存期可达1个月以上。A novel heat released microcapsule-type latent curing agent was prepared by solvent evaporation technique with 2-methylimidazole（2MMZ）as core material and polystyrene（PS）as wall material.The chemical structure,core material content,surface morphology,size distribution and curing characteristics of this microcapsule-type curing agent were characterized by FT-IR,TGA,SEM,granulometer and DSC.The obtained microcapsules had a smooth surface and displayed a narrow size distribution with the mean size about 10.18 μm,and its core material content was about 40.36%.In addition,the one-component adhesive made from the microcapsules and epoxy resin E-51 showed excellent curing characteristics and latent properties.It was found that the E-51/2MMZ-PS microcapsule system could be cured at 100℃ in 1 h and its shelf life at room temperature was more than 1 month.

关 键 词：微胶囊 潜伏性固化剂 环氧树脂 溶剂挥发法 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]