| 摘要: |
| 为使铝粉颜料广泛应用在水性漆或墨中，必须提高其耐腐蚀性。铝粉表面的羟基是吸附缓蚀剂的有效基团，采用Cu2+氧化铝粉实现铝粉表面羟基化，以酚醚型磷酸酯（TXP10）作为缓蚀剂，探讨了反应介质、CuSO4·5H2O和TXP10的用量对缓蚀效果的影响。结果表明：在pH为6，异丙醇∶水=100∶15的反应介质中，40 g铝粉在0.3 g CuSO4·5H2O羟基化作用下，吸附4 g TXP10，可达到较好缓蚀效果。红外光谱和X射线衍射测定表明，铜离子氧化金属铝在铝粉表面形成勃姆石结构的氧化铝的水合物吸附TXP10。 |
| 关键词: 羟基化 铜离子 铝颜料 磷酸酯 缓蚀 |
| DOI：10.11933/j.issn.1007-9289.2015.01.015 |
| 分类号: |
| 基金项目: |
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| Corrosion Inhibition of Aluminum Pigment by Phosphate Based on Copper Ion Oxidized Aluminum |
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WEI Huimian, MA Zhiling, LI Cuicui
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College of Chemistry and Environmental Science, Hebei University, Baoding 071002, Hebei
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| Abstract: |
| In order to make aluminum pigments more widely used in waterbased paints or inks, the corrosion resistance of the aluminum pigments must be improved. The hydroxyl groups on the surface of the aluminum flakes are the effective groups for adsorbing corrosion inhibitors. Based on aluminum pigment surfaces hydroxylated by copper ions, and phenol ether phosphate TXP10 as a corrosion inhibitor, the influences of reaction media, and dosage of CuSO4·5H2O and TXP 10 on the inhibition efficiency were investigated. When 40 g aluminum was hydroxylated by 0.3 g CuSO4·5H2O and adsorbed 4 g TXP10 in the media of pH=6 and isopropanol∶water=100∶15, the products can achieve the best inhibition. The results of IR and XRD show that the boehmite structure hydrated alumina formed by copper ions oxidizing aluminum can successfully adsorb TXP10 on the aluminum surface. |
| Key words: hydroxylation copper ion aluminum pigment phosphate corrosion |
