水性光固化硅溶胶环氧丙烯酸酯复合乳液的制备  

Preparation of waterborne ultraviolet-curable silica sol-epoxy-acrylate composite emulsion

作　　者：刘荷花 刘伟区[1,3,4,5] 梁利岩 陈国阳[1,2,3,4,5] 刘小红 LIU Hehua;LIU Weiqu;LIANG Liyan;CHEN Guoyang;LIU Xiaohong(Guangzhou Institute of Chemistry,CAS,Guangzhou 510650,China;University of Chinese Academy of Sciences,Beijing 101408,China;Guangdong Provincial Key Laboratory of Organic Polymer Materials for Electronics,Guangzhou 510650,China;CAS Engineering Laboratory for Special Fine Chemicals,Guangzhou 510650,China;CASH GCC(Nanxiong)Research Institute of New Materials Co.,Ltd.,Nanxiong 512499,China)

机构地区：[1]中科院广州化学研究所,广东广州510650 [2]中国科学院大学,北京101408 [3]广东省电子有机聚合物材料重点实验室,广东广州510650 [4]中国科学院新型特种精细化工品工程实验室,广东广州510650 [5]国科广化(南雄)新材料研究院有限公司,广东南雄512499

出　　处：《电镀与涂饰》2021年第6期447-453,共7页Electroplating & Finishing

基　　金：广州市科技计划计划(201904010244)。

摘　　要：首先在环氧丙烯酸酯(EA)侧链上引入含光固化及增韧功能的聚醚类亲水接枝物,作为环氧丙烯酸酯的自乳化剂,再与EA混合获得相对稳定的乳液,然后添加具有光固化功能和相容性较好的硅溶胶,最终获得黏度适中的水性光固化硅溶胶环氧丙烯酸酯复合乳液。采用傅里叶变换红外光谱仪、扫描电镜和热重分析仪对乳液及涂膜进行表征,并考察了乳化剂和硅溶胶用量对涂膜性能的影响。结果表明,当乳化剂添加量为15%,固含量为60%,硅溶胶添加量为4%时,涂膜的铅笔硬度为3H,柔韧性1 mm,附着力1级,吸水率2.52%,综合性能最优。Epoxy acrylate(EA)was grafted with hydrophilic polyether with photocuring and toughening functions into its side chain,and then mixed as a self-emulsifier with EA,producing a stable emulsion.A waterborne ultraviolet-curable silica sol-epoxy-acrylate composite emulsion with a moderate viscosity was obtained based on the said emulsion by adding silica sol with photocuring function and good compatibility to it.The emulsion and the coating prepared therefrom were characterized by Fourier-transform infrared spectroscopy,scanning electron microscopy,and thermogravimetric analysis.The effects of the amounts of emulsifier and silica sol on the properties of coating were studied.The results showed that the coating prepared with 15%emulsifier and 4%silica sol at a solid content of 60%had a pencil hardness of 3H,a flexibility of 1 mm,a 1-grade adhesion,and a water absorption rate of 2.52%,showing the best comprehensive performance.

关 键 词：环氧丙烯酸酯 非离子型自乳化剂 纳米硅溶胶 改性 水性涂料 

分 类 号：TQ630.4[化学工程—精细化工]