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针对铝合金阳极氧化有机染料染黑封闭的缺点,采用无机盐A–B染黑工艺对铝合金阳极氧化产品进行黑色封闭处理。介绍了Co(CH3COOH)2–Na2S、FeSO4–(NH4)2S、NiSO4–(NH4)2S等3种无机盐黑色封闭处理工艺,根据相关标准对经黑色封闭处理后的铝合金阳极氧化膜进行了湿热、盐雾、高温及太阳辐射试验。结果表明,3种铝合金阳极氧化黑色封闭处理试样均符合标准要求。无机盐黑色封闭工艺消除了传统有机染料封闭后易溶于有机溶剂而脱落变色以及在强光照射下易变色的缺陷。
Aiming at the shortcoming of aluminum alloy anodic oxidation of organic dyes black seal, the aluminum alloy anodized products were black closed treatment by the inorganic black A-B process. In this paper, the black process of black inorganic salts such as Co (CH3COOH) 2-Na2S, FeSO4- (NH4) 2S, NiSO4- (NH4) 2S was introduced. According to relevant standards, the black anodized aluminum films Damp heat, salt spray, high temperature and solar radiation test. The results show that the three kinds of aluminum alloy anodized black sealed samples are in line with the standard requirements. Inorganic salt black sealing process eliminates the defects of traditional organic dyes that are easily soluble in organic solvents, discolored and discolored and easily discolored under strong light.