摘要
以脲醛树脂为壁材,石油醚为芯材,通过原位聚合法制备微胶囊。利用光学显微镜(OM)、气相色谱(GC)、红外光谱(FT-IR)、差示扫描量热法(DSC)和热重分析法(TGA)等手段研究了芯壁材质量比、乳化剂用量、搅拌速率对微胶囊表面形态和性能的影响。结果表明,当芯壁材质量比为0.8∶1,乳化剂十二烷基苯磺酸钠(SDBS)用量为7%,搅拌速度控制在600 r/min时,得到的微胶囊产率为81.14%,形态较好,平均粒径为50μm,在200℃时失重率为14%。
The mierocapsules were prepared by in-situ polymerization technology with poly （urea-formaldehyde） （PUF） as shell material, petroleum ether as core material. The effects of different core shell material ratios, emulsifier dodges and agitation rates on the surface morphology and other properties of microcapsules were investigated by using optical microscopy （OM）, gas chromatography （GC）, Fourier-transform infrared spectroscopy （FT-IR）, differential scanning calorimetry （DSC） and thermogravimetric analysis （TGA）. Optimum reaction conditions are as follows： 0.8 ： 1 as core shell material ratio, 7 % as emulsifier dosage, 600 r/rain as the agitation rate. Under these conditions, the yield of microcapsules is 81.14%, average sizeis 50μm, weigh loss is 14% at 200℃.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2009年第2期160-163,共4页
Polymer Materials Science & Engineering
关键词
原位聚合
微胶囊
脲醛预聚体
石油醚
in-situ polymerization
microcapsule
poly （urea-formaldehyde）
petroleum ether
