水解EVA乳液与甲苯二异氰酸酯交联反应研究  

Study on the Crosslinking Reaction between Hydrolyzed Ethylene-Vinyl Acetate Emulsion and TDI

作　　者：陈沛智[1] 李刚[1] 陈艳军[1] 赵奇志[1] 

机构地区：[1]湖北大学化学与材料科学学院测试中心,武汉430062

出　　处：《涂料工业》2000年第2期10-13,共4页Paint & Coatings Industry

摘　　要：乙烯－ 醋酸乙烯共聚物（ＥＶＡ）乳液经碱催化水解与甲苯－ ２，４－ 二异氰酸酯（ＴＤＩ） 进行交联反应而改性。ＥＶＡ 乳液水解程度为３％ ，反应温度为３０℃，反应时间为１ ｈ 的条件下有较高的转化率。ＴＤＩ用量与ＥＶＡ水解程度有关。以红外光谱、透射电子显微镜表征水解反应、交联反应及乳胶粒结构形态。The ethylene-vinyl acetate(EVA)copolymer emulsion was modified by hydrolysis at the present of basic catalyst and further crosslin king with toluene diisocyanate(TDI).Higher conversion could be reached under the condition of EVA with 3% hydrolysis degree at 30℃ for 1 h.The level of TDI depends on the hydrolysis degree of EVA.The hydrolytic reaction,crosslinking reaction and latex particle structural morphology were characterized by IR and TEM.

关 键 词：甲苯二异氰酸酯 交联 水解 EVA乳液 乳胶漆 

分 类 号：TQ633[化学工程—精细化工] TQ316.64