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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%。
Nano-Al_2O_3 modified melamine-urea-formaldehyde resin as wall material and 1,2-cyclohexanedicarboxylic acid diglycidyl ester (DGCHD) as the core material were prepared by in-situ polymerization of nano Al 2 O 3 modified ring Oxygen resin microcapsules. The structure and properties of microcapsules were characterized by infrared spectroscopy, thermogravimetry and scanning electron microscopy. The results showed that the thermal stability and surface roughness of the microcapsules increased when the appropriate amount of nano-Al 2 O 3 was added to the wall, and the nano-Al 2 O 3 did not destroy the polycondensation reaction of the melamine-urea-formaldehyde resin prepolymer. When the wall material nano-Al_2O_3 is 3% (wt, mass fraction, the same below), the capsule core 94.5%.