CAJ | 학술논문

以脲醛树脂为囊壁、环氧树脂E-51的乙酸乙酯溶液为囊芯,采用原位聚合法成功制备了脲醛树脂包覆环氧树脂溶液的微胶囊.通过改变尿素、甲醛、芯材用量等研究了脲醛树脂生成速率和沉积速率对微胶囊形貌和结构的影响.利用扫描电子显微镜、光学显微镜、傅里叶变换红外光谱仪和热重分析仪对微胶囊进行表征.结果表明:成功制备了外表面粗糙和光滑的两种微胶囊,且这两种微胶囊的芯材都具有良好的流动性;外表面粗糙的微胶囊力学性能较好,热稳定性优良.
이뇨철수지위낭벽、배양수지E-51적을산을지용액위낭심,채용원위취합법성공제비료뇨철수지포복배양수지용액적미효낭.통과개변뇨소、갑철、심재용량등연구료뇨철수지생성속솔화침적속솔대미효낭형모화결구적영향.이용소묘전자현미경、광학현미경、부리협변환홍외광보의화열중분석의대미효낭진행표정.결과표명:성공제비료외표면조조화광활적량충미효낭,차저량충미효낭적심재도구유량호적류동성;외표면조조적미효낭역학성능교호,열은정성우량.
A series of microcapsules were successfully prepared by in-situ polymerization using poly (urea-formaldehyde)as a shell material and the solution of epoxy resin E-51 and ethyl acetate as a core material. The effects of formation rate and deposition rate of poly(urea-formaldehyde)on the morphology and structure of the microcapsules were investigated by varying the contents of urea,formaldehyde and core material. The properties and structures of the microcapsules were characterized by scanning electron microscopy(SEM),optical microscopy(OM),Fourier transform infrared spectroscopy(FTIR),and thermogravimetric analyzer(TG). The results indicate that the two kinds of poly(urea-formaldehyde) microcapsules with rough surface or smooth surface are successfully synthesized. The core material in both microcapsules has good flowability. The microcapsule with rough surface exhibits good mechanical properties and excellent thermal stability.