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A COATING TYPE CHROMATE-RESIN LIQUIDS WITH EXCELLENT WELDABILITY AND ANTI-FINGER PROPERTY AND A METHOD FOR MANUFACTURING ANTI-FINGER PRINTED SHEETS USING IT
A COATING TYPE CHROMATE-RESIN LIQUIDS WITH EXCELLENT WELDABILITY AND ANTI-FINGER PROPERTY AND A METHOD FOR MANUFACTURING ANTI-FINGER PRINTED SHEETS USING IT
PURPOSE: A coating type chromate-resin solution is provided which not only has stability (storage property) of a resin solution for a finger printing resistant steel sheet but also forms a chromium-resin mixed film after coating the solution on the steel sheet, and a method is provided to secure weldability and finger printing resistance of the steel sheet using the resin solution. CONSTITUTION: The coating type chromate-resin solution having superior weldability and finger printing resistance comprises a main solvent resin in which 40 to 50 wt.% of butylacrylate, 40 to 49 wt.% of methylmethacrylate and 1 to 20 wt.% of methacrylic acid are polymerized and an average particle size is 0.05 to 0.1 microns; colloidal silica coated with alumina in which a weight ratio of the main solvent resin to silica is 4:6 to 1.5:8.5; chromium aqueous solution in which a constituent ratio of trivalent chromium in 10 to 30 g/l of chromium constituent is 0.3 to 0.5 based on the total volume of chromium aqueous solution; and 0.5 to 5 g/l of N-(aminoethyl)-aminopropyl trimethoxysilane coupling agent based on the total volume of chromate-resin solution. The method comprises the steps of preparing the coating type chromate-resin solution by adding a main solvent resin to a mixed solution of alumina coated colloidal silica, chromium aqueous solution and silane coupling agent; coating the chromate-resin solution on both sides of a steel sheet to be plated; and forming a chromium-resin mixed film layer comprising 30 to 50 mg/m2 and 400 to 700 mg/m2 on the steel sheet by bake drying the steel sheet at a temperature of 140 to 150 deg.C.
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机译:用途:提供一种涂覆型铬酸盐树脂溶液,该溶液不仅具有用于耐指纹印刷的钢板的树脂溶液的稳定性(存储性能),而且在将溶液涂覆在钢板上之后形成铬树脂混合膜,并且提供一种使用树脂溶液确保钢板的可焊接性和耐指纹性的方法。组成:具有优异的可焊性和耐指纹性的涂料型铬酸盐树脂溶液包含一种主溶剂树脂,其中40至50重量%的丙烯酸丁酯,40至49重量%的甲基丙烯酸甲酯和1至20重量%的甲基丙烯酸聚合,平均粒径为0.05至0.1微米;涂覆有氧化铝的胶态二氧化硅,其中主要溶剂树脂与二氧化硅的重量比为4:6至1.5:8.5;铬水溶液,以铬水溶液的总体积为基准,铬成分10〜30g / l中的三价铬的成分比为0.3〜0.5。相对于铬酸树脂溶液的总体积为0.5〜5g / l的N-(氨基乙基)-氨基丙基三甲氧基硅烷偶联剂。该方法包括以下步骤:通过向氧化铝涂覆的胶体二氧化硅,铬水溶液和硅烷偶联剂的混合溶液中加入主溶剂树脂来制备涂覆型铬酸树脂溶液。将铬酸盐树脂溶液涂覆在待镀钢板的两侧。通过在140至150℃的温度下烘烤干燥钢板,在钢板上形成包含30至50mg / m 2和400至700mg / m 2的铬-树脂混合膜层。
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