摘要
先运用溶胶-凝胶法在铝颜料表面包覆了乙烯基活化的二氧化硅,然后通过原位聚合法在铝颜料表面接枝包覆聚丙烯酸酯,制备了双层包覆型铝颜料.采用FTIR、XPS、BET和SEM等测试方法表征了包覆型铝颜料的表面形貌,用胶带撕拉实验测试了铝颜料在涂层中的粘附性,通过测量含铝颜料涂层的明度值L探讨了包覆及泡酸实验对铝颜料金属光泽的影响.实验结果表明二氧化硅和聚丙烯酸酯双层包覆型铝颜料的耐腐性和与树脂相容性均得以提高,而铝颜料的金属光泽也保持的较好.
Double-layer encapsulated aluminum pigments were prepared by first encapsulating vinyl actived SiO2 through sol-gel method, and secondly coating with polyacrylate by in-situ polymerization to promote anti-corrosion of aluminum pigments and enhance improved adhesion in coating. The encapsulated aluminum pigments were characterized by means of FTIR, XPS, BET and SEM. Subsequently the effect of encapsulation on metallic appearance, the stability of aluminum pigments in acid corrosion media and adhesion of PA/SiO2/Al in coating were characterized by L-value, acid-dipping test and pulling-off test respectively. The results demonstrate that uniform and compact SiO2-polymeric films have been formed on the surface of aluminum pigments. The anti-corrosion of encapsulated aluminum pigments and their compatibility with resins are improved remarkably.
出处
《陕西科技大学学报（自然科学版）》
2010年第3期7-12,21,共7页
Journal of Shaanxi University of Science & Technology
基金
国家自然科学基金(20976059)
广东省自然科学基金项目(07006528)
华南理工大学中央高校基本科研业务费资助项目(2009ZM0141)
关键词
包覆铝颜料
聚丙烯酸酯
SIO2
原位聚合
耐腐蚀性
附着力
encapsulation
aluminum pigment
polyacrylate
SiO2
in-situ polymerization
corrosion protection
adhesion
