Ⅱ型水性环氧体系的固化程度研究  

Study on the Curing Extent of Waterborne Epoxy System Ⅱ

作　　者：林曦[1] 张旭东[1] 周杰[1] 

机构地区：[1]湖南大学化学化工学院,长沙410082

出　　处：《涂料工业》2007年第5期1-3,11,共4页Paint & Coatings Industry

摘　　要：以差示扫描量热(DSC)为主要研究手段,通过对涂膜的玻璃化转变温度的分析,研究了乳胶粒粒径、固化温度和固化剂的活性对Ⅱ型胺-水性环氧双组分体系固化程度的影响。研究发现,水性环氧树脂乳胶粒粒径越小,水性环氧体系的固化程度越高;Ⅱ型水性环氧体系的固化存在最佳的固化温度,在此温度下,体系的固化反应程度最高,涂膜的综合性能最佳;仲胺类固化剂与环氧树脂乳胶粒的固化程度比伯胺类固化剂的高。By use of differential scanning calorimetry （DSC） for analysis of the glass transition temperature, the influence of latex particle size, curing temperature and reactivity of curing agents on the curing extent of the waterborne epoxy/amine system Ⅱ have been studied. It is found that the smaller size of latex particle results in higher curing extent of waterborne epoxy/amine system Ⅱ , and the system has a optimized curing temperature, at which it shows the best comprehensive properties of the film and highest curing extent, and the curing extent with second amine higher than that with primary amine.

关 键 词：水性环氧树脂 固化程度 玻璃化转变温度 DSC 

分 类 号：TQ630.7[化学工程—精细化工]