SBS丁二酸氢钾离聚体增韧剂的制备及其应用研究  

Preparation of SBS potassium hydrogen succinate ionomer and its products as toughening agent for epoxy curing system

作　　者：陈勇 谭晓明 熊航行[1,2] 胡家玮 朱琼 陈姝敏 万力 丁鹏 吴凡 谢洪泉 CHEN Yong;TAN Xiao-ming;XIONG Hang-xing;HU Jia-wei;ZHU Qiong;CHEN Shu-min;WAN Li;DING Peng;WU Fan;XIE Hong-quan(College of Chemical Engineering and Pharmacy,Jingchu University of Technology,Jingmen,Hubei 448000,China;Jingmen Green Chemical Technology Research Institute,Jingmen,Hubei 448000,China;Hubei Benxin Environmental Protection Technologies Inc.,Wuhan,Hubei 430074,China;Department of Chemistry,Huazhong University of Science and Technology,Wuhan,Hubei 430074,China)

机构地区：[1]荆楚理工学院化工与药学院,湖北荆门448000 [2]荆门化工绿色技术研究院,湖北荆门448000 [3]湖北本心环保科技股份有限公司,湖北武汉430074 [4]华中科技大学化学系,湖北武汉430074

出　　处：《粘接》2018年第11期29-34,共6页Adhesion

基　　金：荆楚理工学院引进人才启动项目QDB201604;荆楚理工学院大学生创新创业训练项目KC2016012;KC2017010;KC2018034和KC2018036;湖北省教育厅科学研究计划指导性项目B2017250;荆门市科技计划项目2018YFB048;国家级大学生创新创业训练项目201611336005;湖北省大学生创新创业训练项目201611336016;201711 336006;201811336034和201811336036

摘　　要：在相转移催化剂(PEG-400)的存在下,对环氧化苯乙烯-丁二烯-苯乙烯(ESBS)嵌段共聚物进行开环反应,成功制备了SBS丁二酸氢钾离聚体。将该离聚体应用于环氧树脂(E-44)/脂肪胺(DMDC)固化体系的增韧改性。结果表明,SBS丁二酸氢钾离聚体最佳的制备条件为:ESBS质量浓度为150g/L,丁二酸氢钾/ESBS物质的量比为1.6,PEG-400/ESBS质量比为7%,反应温度为70℃,反应时间为4 h,最终可制得离聚体的开环率为78.2%。添加质量分数为1%的该离聚体能有效提高E-44/DMDC固化物的韧性,改性环氧固化材料的拉伸强度为50.4 MPa,增加39.2%,弯曲强度为67.2 MPa,增加16.7%。SBS potassium hydrogen succinate ionomer was successfully prepared by ring-opening reaction of epoxidized styrene-butadiene-styrene （ESBS） block copolymer in the presence of phase transfer catalyst （PEG-400）. The ionomer was used for the toughening modification of the epoxy resin （E-44）/aliphatic amine （DMDC） curing system. The results showed that the optimum preparation conditions of SBS potassium hydrogen succinate ionomer were as follows： the concentration of ESBS was 150 g/L, the molar ratio of potassium hydrogen succinate to ESBS was 1.6, the mass ratio of PEG-400/ESBS was 7%, the reaction temperature was 70 ℃, the reaction time was 4 h, and finally the ionomer with 78.2% ring opening degree was obtained. The toughness of E-44/DMDC cured product can be effectively improved by adding 1wt% ionomer. The tensile strength of the modified epoxy cured product was 50.4 MPa, increased by 39.2%, and the bending strength was 67.2 MPa, increased by 16.7%.

关 键 词：SBS 离聚体 丁二酸氢钾 环氧树脂 增韧剂 

分 类 号：TQ314[化学工程—高聚物工业]