甲基丙烯酸甲酯(MMA)/丙烯酸异辛酯(EHA)对水性丙烯酸/醇酸树脂性能的影响  

Effects of methyl methacrylate(MMA)/2-Ethylhexyl acrylate (EHA) on properties of waterborne acrylic/alkyd resin

作　　者：沈一丁[1] 贾贵玉 费贵强 王海花[1] 税小军[1] 张静文[1] 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2016年第3期65-70,共6页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(21204046;51373091);教育部留学回国人员科研基金项目(2012(1707));陕西省教育厅重点实验室科研计划项目(13JS018;2011JS057)

摘　　要：以甲基丙烯酰氧乙基三甲基氯化铵、甲基丙烯酸甲酯(MMA)、丙烯酸异辛酯(EHA)等为原料,采用自由基溶液聚合法合成了阳离子丙烯酸高分子乳化剂(CPA),再通过乳化工艺进一步制备出了水性丙烯酸/醇酸树脂乳液(CPAAR).采用傅里叶红外光谱(FTIR)、核磁共振光谱(NMR)和透射电镜(TEM)等对CPAAR聚合物的结构进行了表征.FTIR和NMR测试表明合成了CPAAR聚合物,TEM测试表明CPAAR乳液为核壳结构;并重点研究了MMA/EHA(质量比,下同)对CPAAR乳液粒径、Zeta电位、玻璃化转变温度和干燥时间的影响.结果表明,当其它单体用量不变、MMA/EHA从15∶0变化到0∶15时,CPAAR乳液粒径增加了65.6nm、Zeta电位下降了8.2mV、胶膜玻璃化转变温度下降了31.9℃.干燥时间测试表明胶膜表干时间减小了17min,实干时间相同,这说明胶膜的干燥是先物理干燥后氧化交联干燥.A series of cationic acrylic polymer surfactant （CPA）was successfully synthesized by free radical solution polymerization,using methacryloxyethyltrimethyl ammonium chlo-ride,methyl methacrylate （MMA）,isooctyl acrylate （EHA）as reaction monomers and then waterborne （CPAAR ） emulsions was also prepared by emulsification.The structure of CPAAR polymer and emulsion morphology were investigated by FTIR,NMR and transmis-sion electron microscopy （TEM）.The result of FTIR and NMR spectroscopy was in agree-ment with CPAAR copolymer designed.TEM test showed that emulsions displayed a particlemorphology with core shell structure.The effect of mass ratio of MMA/EHA on particle size、Zeta value、glass transition temperature and drying time of CPAAR emulsion and film was characterized.As a result,as mass ratio of MMA/EHA decreased from 15∶0 to 0∶15, particle size of CPAAR emulsion increased by 65.6 nm,Zeta value decreased by 8.2 mV,and glass transition temperature decreased by 3 1 .9 ℃.The touch-drying time decreased by 1 7 min and hard-drying time was the same, indicating the drying mechanism is oxidation crosslinking drying after physical drying.

关 键 词：醇酸树脂 性能 丙烯酸树脂 水性 乳液 

分 类 号：TQ317.5[化学工程—高聚物工业]