相反转法制备水性环氧树脂及其固化动力学  

Preparation of Water-Borne Epoxy Resin by Phase Inversion and Non-Isothermal Cure Kinetics

作　　者：张雪芳[1] 高俊刚[1] 吕红秋[1] 

机构地区：[1]河北大学化学与环境科学学院,河北保定071002

出　　处：《高分子材料科学与工程》2012年第7期128-131,共4页Polymer Materials Science & Engineering

基　　金：河北省自然科学基金资助项目(E2010000287)

摘　　要：以琥珀酸酐、聚乙二醇、E-51为原料合成了非离子型乳化剂,利用相反转法制备了水性环氧树脂乳液和水性环氧固化剂。用红外光谱(FT-IR)、差示扫描量热(DSC)和热重分析(TGA)研究了水性环氧树脂与甲基四氢苯酐(MeTHPA)的热稳定性和固化机理。结果表明,水性环氧树脂与MeTHPA已固化完全;固化反应符合两个参数的自催化esták-Berggre(S-B)模型,固化反应的平均表观活化能为73.95 kJ/mol。MeTHPA与环氧树脂物质的量比为0.6的热稳定性最好。Non-ionic water-borne epoxy resin and cure agent was prepared from succinic anhydride, polyether glycol （EG-2000）, bisphenol A epoxy resin （E-51） and 3-methyl-tetrahydrophthalic anhydride （MeTHPA） via the phase inversion technique. The curing mechanism, kinetics and thermal properties were investigated by Fourier transform infrared spectra（FT-IR）, thermogravimetric analysis （TGA） and differential scanning calorimetry （DSC）. The results showed that the MeTHPA had reacted with the epoxy group. The curing reaction could be described by autocatalytic gestdk-Berggre model and the kinetic equation of the curing reaction was obtained. The average activation energy Ea is 73. 953 kJ/mol. When the proportion of MeTHPA with epoxy is 0.6, this material has best thermal stability, the temperature of 5 % mass loss is 334.02℃ and the residual yield is 29.1% at 500℃.

关 键 词：环氧树脂 甲基四氢苯酐 琥珀酸酐 固化反应 动力学 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]