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发明公开
CN106637028A 一种环保型热浸镀锌用封闭处理剂 无效 - 驳回

一种环保型热浸镀锌用封闭处理剂
摘要：
本发明公开了一种环保型热浸镀锌用封闭处理剂，属于热浸镀锌及其后处理技术领域。本发明的封闭处理剂由HNO3 20～30ml/l，Na2SiO3 30～50g/l，H3PO4 5～10ml/l，H2O2 25～40ml/l，植酸3～5ml/l，Zn(H2PO4)2 10～20g/l，虫胶溶液0.5～3ml/l和蒸馏水配制而成。本发明的热浸镀锌用封闭处理剂组成中不含铬化合物，处理后镀锌层表面的保护膜中也不含铬，其在配制、使用、废弃处理过程具有显著的环保特征。热浸镀锌层经本发明的封闭处理剂处理后可在镀层表面获得外观色泽均匀、覆盖完整的保护膜，可显著提高镀层的耐蚀性能。
摘要（英）：

The invention discloses an environment-friendly sealing treatment agent for hot-dip galvanizing and belongs to the technical fields of hot-dip galvanizing and after-treatment. The sealing treatment agent is prepared from 20-30ml/L of HNO3, 30-50g/L of Na2SiO3, 5-10ml/L of H3PO4, 25-40ml/L of H2O2, 3-5ml/L of phytic acid, 10-20g/L of Zn(H2PO4)2, 0.5-3ml/L of a shell lac solution and distilled water. The sealing treatment agent for hot-dip galvanizing does not comprise a chromium compound, a protecting film on the surface of a treated galvanized layer does not contain chromium either, and remarkable environment-friendly features are presented in preparing, using and discarding treatment processes. After the hot-dip galvanized layer is treated by the sealing treatment agent, the protective film is which uniform in appearance color and complete in covering can be obtained on the surface of the galvanized layer, and the corrosion resistance of the galvanized layer can be obviously improved.

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