纳米Al2O3改性环氧树脂微胶囊的制备及表征  

Synthesis and characterization of epoxy resin microcapsules modified with nano-Al_2O_3

作　　者：汪海平[1] 李猛强 

机构地区：[1]江汉大学光电化学材料与器件省部共建教育部重点实验室,化学与环境工程学院,武汉430056

出　　处：《化工新型材料》2016年第3期164-165,168,共3页New Chemical Materials

基　　金：湖北省教育厅科研项目(B2013162);武汉市科技局晨光计划资助项目(2013071004010473)

摘　　要：以纳米Al_2O_3改性的三聚氰胺-尿素-甲醛树脂为壁材,以1,2-环己烷二甲酸二缩水甘油酯(DGCHD)为芯材,采用原位聚合法制备了纳米Al_2O_3改性的环氧树脂微胶囊。通过红外光谱、热失重和扫描电镜等方法对微胶囊的结构和性能进行了表征。结果表明,当壁材中加入适量的纳米Al_2O_3时,微胶囊的热稳定性和表面粗糙度均增加,且纳米Al_2O_3并不会破坏三聚氰胺-尿素-甲醛树脂预聚体的缩聚反应。当壁材中纳米Al_2O_3为3%(wt,质量分数,下同)时,微胶囊的囊芯达94.5%。Microcapsules containing epoxy resin and diglycidyl 1,2-cyclohexanedicarboxylate,were prepared by in-situ polymerization with melamine-urea-formaldehyde resin modified with nano-Al_2O_3 as the wall materials.The chemical structure,thermal properties and surface morphology of microcapsules were characterized by FT-IR,TG and SEM methods,respectively.Results indicated that the thermal stability and surface roughness of microcapsules were both increased by incorporating with proper amount of nano-Al_2O_3.Meanwhile,the addition of alumina nanoparticles had no bad influence on the polymerization of melamine-urea-formaldehyde prepolymer.When the mass ratio of nano-Al_2O_3 to wall material of microcapsule was 3%,the core content of modified microcapsules was up to 94.5%.

关 键 词：微胶囊 纳米粒子 三聚氰胺-尿素-甲醛树脂 环氧树脂 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]