不同分散手段和反应条件对合成酚醛环氧树脂微胶囊的影响  

Influence of Different Dispersing Methods and Reaction Conditions on the Preparation of Novolac Epoxy Resin Microcapsules

作　　者：方一[1] 李路海[1] 莫黎昕[1] 胡朝丽[1] 

机构地区：[1]北京印刷学院印刷包装材料与技术北京市重点实验室,北京102600

出　　处：《包装工程》2008年第10期33-36,共4页Packaging Engineering

基　　金：北京市属市管高等学校人才强校计划资助项目资助(PHR)(IHLB)

摘　　要：以交联后的酚醛环氧树脂作为囊壁，溶有分散蓝的二芳基乙烷作为囊芯，通过界面聚合法制备了酚醛环氧树脂微胶囊。探讨了反应过程中电动搅拌和高速分散对微胶囊合成的影响，并使用扫描电镜和激光粒度仪对微胶囊表面形貌、结构、囊壁厚度和粒径分布进行了表征和测试。通过调节电动搅拌机转动速度，能够制得粒径100～500μm的微胶囊；通过高速分散器分散乳液，调节不同反应时间和温度，可制得粒径10～100μm的微胶囊。制得的微胶囊粒径分布均匀，密封性好，囊壁厚度在50nm左右。Novolac epoxy resin microcapsules were prepared through interface polymerization process, which had the cross-linked novolac epoxy resin shell and a diaryl-ethane blue dye liquid core. The influence of stirring speed and high-speed dispersing on preparation of the rnicrocapsules was discussed. The surface morphology, structure, shell thickness, and size distribution of the prepared microcapsules were characterized by scanning electron microscopy and laser particle size analyzer. By regulating the stirring speed of the electric agitator, the microcapsules having diameter ranging from 100μm to 500μm could be obtained; through high-speed distribution method and controlling the reaction time and temperature, microcapsules having diameter ranging from 10μm to 100 μm could he obtained. The shell thickness was about 50 nm. Diameter distribution of the microcapsules was uniform and the hermetic performance was good.

关 键 词：分散手段 微胶囊 酚醛环氧树脂 

分 类 号：TB484[一般工业技术—包装工程] TB487