水性环氧固化剂的合成及性能  

Synthesis of waterborne epoxy curing agent and its properities

作　　者：周继亮[1] 涂伟萍[1] 夏正斌[1] 

机构地区：[1]华南理工大学化学工程研究所,广州510640

出　　处：《化工新型材料》2005年第2期25-28,69,共5页New Chemical Materials

基　　金：国家863项目(2002AA322020)

摘　　要：以三乙烯四胺(TETA)和液体环氧树脂(EPON828)为原料,在物料摩尔比(TETA/EPON828)为2.2/1,反应温度为65℃,反应时间为4h的工艺条件下合成EPON828-TETA加成物.然后用具有多支链柔韧性链段的C12～14叔碳酸缩水甘油酯(CARDURA E-10)在反应温度为70℃,反应时间为3h的工艺条件下对EPON828-TETA加成物进行封端改性.探讨了中和度对所合成的水性环氧固化剂的粒径及稳定性的影响.CARDURA E-10改性后的水性环氧固化剂与液体环氧树脂在室温下固化所形成的涂膜性能良好,其柔韧性和耐冲击性优于用传统封端改性剂BGE或CGE改性水性环氧固化剂所形成的涂膜.A waterborne curing agent for epoxy resin was prepared using CARDURA E-10 which is a hydrophobic, branched alkyl glycidyl ester as modifier agent of EPON828-TETA adduct. The technical parameters for preparing EPON828-TETA adduct are 2 2/1 for mole ratio of reactants (TETA/EPON828), 65℃ for reaction temperature, 4.0 hours for reaction times. The technical parameters for the modification reaction are 70℃ for reaction temperature and 3.0 hours for reaction times. The particle size distribution and storage stability of waterborne curing agent modified by CARDURA E-10 were effected by degree of salting with acetic acid. The two-component film of waterborne curing agent modified by CARDURA E-10 and liquid epoxy resin under ambient cure conditions is better quality than that of waterborne curing agent modified by BGE or CGE.

关 键 词：水性环氧固化剂 合成 封端 加成 反应温度 反应时间 改性 体环 工艺条件 原料 

分 类 号：TQ630.4[化学工程—精细化工]