原位聚合制备纳米SiO2／聚丙烯酸酯复合树脂及其氨基烤漆性能的研究  

In-situ Polymerization of Polyacrylate/Nano-silica Composite Resin and Its Application in Baking Varnish with Melamine

作　　者：霍丽霞[1] 叶凤英 初广成 陈飞[1] 郭金山[1] 

机构地区：[1]兰州大学化学化工学院,兰州730000 [2]维新制漆深圳有限公司,广东深圳518118

出　　处：《涂料工业》2009年第3期22-24,27,共4页Paint & Coatings Industry

摘　　要：用硅烷偶联剂KH-560对纳米SiO2进行表面改性处理,然后在溶液中进行原位聚合,制得纳米SiO2/聚丙烯酸酯复合树脂。采用红外光谱和扫描电镜对纳米SiO2表面接枝情况及纳米SiO2在树脂中的的分散状态进行了分析。之后将该复合树脂配制成氨基烤漆,对漆膜性能进行研究分析表明:复合树脂中随着纳米SiO2用量的增加,漆膜的硬度、耐摩擦性都有显著增加;适当的纳米SiO2用量可改善漆膜的耐冲击性;附着力、柔韧性及光泽随用量增加呈下降趋势。Nano -silica was modified by silane coupling agent, which was then used to prepare acrylic/ nano - silica composite resins by in - situ polymerization. The grafting modification of silica and its dispersing in resins were studied by Fourier -transform infrared spectroscopy （FTIR） and scanning electron microscopy（SEM）. These resins were then used in melamine baking varnish. The mechanical properties and gloss of the film were tested. Results showed that incorporation of nano - SiO2 can improve hardness and abrasion resistance of the film and decrease the gloss, adhesion and flexibility. The appropriate amount of nano -SiO2 can improve the impact strength.

关 键 词：纳米二氧化硅 原位聚合 聚丙烯酸酯 烤漆 机械性能 

分 类 号：TQ630.7[化学工程—精细化工]