分别以KH-550、丙烯酸树脂和两者的混合物对铝粉表面进行包覆改性,研究了不同包覆铝粉的耐酸性能,结果发现,以KH-550/丙烯酸树脂共同包覆的铝粉具有更好的耐酸性能.红外光谱(FT-IR)和X射线光电子能谱(XPS)分析表明,KH-550和丙烯酸树脂通过共聚反应在铝粉表面形成了保护膜.以此改性铝粉制备水性铝颜料,通过扫描电镜(SEM)和能谱仪(EDS)对其进行了表征,发现铝粉颜料呈片状,氧含量低(5.17％),具有较好的金属光泽.将此铝颜料用于水性无铬锌基涂料,所制备的涂料具有良好的金属光泽和耐腐蚀性.
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