摘要
以丙烯酸丁酯(BA)、甲基丙烯酸甲酯(MMA)、丙烯酸羟乙酯(HEA)为主要单体,桐油酸和甲基丙烯酸缩水甘油酯(GMA)为功能性单体,采用半连续乳液聚合法制备了一系列桐油酸改性含环氧基团聚丙烯酸酯乳液(简称改性聚丙烯酸酯乳液)。通过FTIR表征胶膜的结构,测定了胶膜的耐水性能、力学性能、热稳定性、耐酸碱性。结果表明,当桐油酸含量(以MMA、BA、HEA、GMA的总质量为基准)为4%时,随着GMA含量(即GMA质量占总丙烯酸酯单体质量的百分数,下同)的增加,胶膜铅笔硬度增大,耐水、耐酸碱性能增强,拉伸强度增大,热稳定性增加,胶膜附着力增加。当GMA含量为12%时,胶膜铅笔硬度为4H,涂在马口铁上的胶膜在质量分数为5%的盐酸溶液中浸泡144 h无变化,在质量分数为5%的NaOH水溶液浸泡72h无变化,24 h的吸水率为3.31%,附着力为0级。
A series of tung oleic acid modified polyacrylate emulsions containing epoxy group(modified polyacrylate emulsion for short)were prepared by semi-continuous emulsion polymerization of butyl acrylate(BA),methyl methacrylate(MMA),hydroxyethyl acrylate(HEA)with tung oil acid and glyceride methacrylate(GMA)respectively,and characterized by FTIR.The water resistance,mechanical properties,thermal stability,as well as the acid and alkali resistance were further analyzed.The results showed that when the content(based on the total mass of MMA,BA,HEA and GMA)of tung oleic acid was 4%,the pencil hardness,the water resistance,acid and alkali resistance,the tensile strength,the thermal stability and the adhesion were all increased with the increase of GMA content(the mass of GMA as a percentage of the total acrylic monomer mass,the same below).The pencil hardness reached 4H,the 24 h water absorption rate was 3.31%,and the adhesion level was 0 level when the mass ratio of GMA was 12%.The film coated on tinplate showed no change when immersed in HCl solution with a mass fraction of 5%for 144 h,and in NaOH aqueous solution with a mass fraction of 5%for 72 h.
作者
朱港港
黄毅萍
鲍俊杰
全晴晴
刘皓
ZHU Ganggang;HUANG Yiping;BAO Junjie;QUAN Qingqing;LIU Hao(College of Chemistry and Chemical Engineering,Anhui University,Hefei 230601,Anhui,China;Anhui Key Laboratory of Green Polymer Materials,Water-based Polymer Materials Anhui Engineering Technology Research Center,Hefei 230601,Anhui,China)
出处
《精细化工》
EI
CAS
CSCD
北大核心
2023年第9期2073-2079,共7页
Fine Chemicals
基金
安徽省高校科学研究项目(KJ2018ZD004)。
