非等温DSC法研究VAc-BA-AM共聚乳液固化反应动力学  

Cure kinetics of VAc-BA-AM copolymerization emulsion by non-isothermal DSC

作　　者：孙晓云[1] 王璐璐[1] 王吉林[1] 封瑞江[1] 赵崇峰[1] 

机构地区：[1]辽宁石油化工大学化学化工与环境学部石油化工学院,辽宁抚顺113001

出　　处：《应用化工》2016年第1期67-70,共4页Applied Chemical Industry

基　　金：辽宁省科技厅博士启动项目(20141126);辽宁省教育厅科学研究一般项目(L2013153);抚顺市科学技术发展资金计划项目(20141115);辽宁石油化工大学博士启动基金(2013XJJ-006)

摘　　要：以醋酸乙烯酯、丙烯酸丁酯、丙烯酰胺为单体,通过半连续乳液聚合方法制备PVC皮革用胶黏剂,借助非等温DSC法(差示扫描量热法)研究共聚乳液的固化过程。使用Kissinger方程、Crane方程和T-β(温度-升温速率)外推法,计算共聚乳液体系固化反应的动力学参数和固化温度。结果表明,共聚乳液体系固化反应的表观活化能为51.71 k J/mol,指前因子为2.79×106S^(-1),反应级数为0.889,最佳固化温度为295.4 K。A new kind of VAc-BA-AM tribasic copolymerization emulsion adhesive was prepared by method of semi-continuous emulsion polymerization with vinyl acetate（ VAc）,butyl acrylate（ BA） and acrylamide（ AM） as monomers. The curing process of polymerization emulsion system was investigated by nonisothermal DSC method,and the kinetics parameters and curing temperatures of curing reaction in the polymerization emulsion system were calculated by Kissinger equation,Crane equation and T-β（ temperatureheating speed） extrapolation. The results showed that the apparent activation energy of curing reaction of the copolymerization emulsion system was 51. 71 k J/mol,the pre-exponential factor was 2. 79 × 106S^（- 1）,the reaction order was 0. 889 and its optimal curing temperature was 295. 4 K.

关 键 词：醋酸乙烯酯 共聚乳液 DSC法 固化反应动力学 

分 类 号：TQ326.5[化学工程—合成树脂塑料工业]