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。
关键词:
纳米二氧化硅 ,
原位聚合 ,
聚丙烯酸酯 ,
烤漆 ,
机械性能
Abstract: 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 disper-sing in resins were studied by Fourier-transform infrared spectroscopy(FTIR ) and scanning electron mi-croscopy(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 ab-rasion resistance of the film and decrease the gloss, adhesion and flexibility. The appropriate amount of nano -SiO2, can improve the impact strength.
Key words:
nano-silica,
in-situ polymerization,
polyacrylate resin,
baking vamish,
mechanical property
霍丽霞, 叶凤英, 初广成, 陈 飞, 郭金山. 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[J]. 涂料工业, 2009, 39(3): 22-24.
Huo Lixia, Ye Fengying, Chu Guangcheng, Chen Fei, Guo Jinshan. In-situ Polymerization of Polyacrylate/Nano-silica Composite Resin and Its Application in Baking Varnish with Melamine[J]. Paint & Coatings Industry, 2009, 39(3): 22-24.