改性环氧树脂涂料的制备及性能研究  

Study on the preparation and properties of modified epoxy resin

作　　者：彭桂荣[1] 张立勇[1] 陈杰[1] 韦菲[1] 任宇红[1] 

机构地区：[1]燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004

出　　处：《热固性树脂》2012年第5期22-26,共5页Thermosetting Resin

基　　金：河北省自然科学基金(E2009000448)

摘　　要：采用马来酸酐单体(MA)对双酚A型环氧树脂(E-51)改性,得到改性环氧树脂(EpM),通过正交实验法确定了改性树脂的制备及固化工艺,并通过红外光谱和热失重分析对产物及固化物进行了表征。结果表明,EpM最佳制备工艺:催化剂N,N-二甲基苯胺添加质量分数2.0%,阻聚剂质量分数0.075%(基于对苯二酚),反应温度80℃,反应时间2.0 h。固化最佳工艺:氧化剂过氧化苯甲酰添加质量分数2%,促进剂N,N-二甲基苯胺质量分数0.6%,交联剂苯乙烯质量分数20%。EpM的合成机理为环氧开环酯化反应;产物中出现了马来酸酐的特征官能团;其热分解温度可提高到418℃;漆膜耐腐蚀性、附着力、冲击强度均有提高。The modified epoxy resin（EpM） was obtained by using maleic anhydride monomer（MA） as modifier of bisphenol A type epoxy resin （E -51 ） . The preparation and curing process were determined by orthogonal experi- ment and the products before and after curing were characterized by infrared spectroscopy and thermogravimetric a- nalysis. The results showed that the optimum preparation process of EpM was as followed ： catalyst N, N - dimethyl aniline mass fraction 2.0%, mass fraction of inhibitor（based on hydroquinone） 0. 075%, reaction temperature 80 ℃ and reaction time 2. 0 h. The best curing technology was as followed ： oxidants benzoyl peroxide mass fraction 2% , promote agent N, N - dimethyl aniline mass fraction 0. 6% and erosslinker styrene mass fraction 20%. The EpM synthesis mechanism was open - loop esterification of epoxy. The product had maleic anhydride characteristics functional group and the thermal decomposition temperature was up to 418 ℃. The resistance to corrosion, adhe- sion, impact strength were improved.

关 键 词：双酚A型环氧树脂 马来酸酐单体(MA) 酯化反应 改性 正交试验 热分解温度 

分 类 号：TQ633[化学工程—精细化工]