Highly corrosion resistant surface treated steel sheet
    98.
    发明专利
    Highly corrosion resistant surface treated steel sheet 有权
    高耐腐蚀表面处理钢板

    公开(公告)号:JP2012077369A

    公开(公告)日:2012-04-19

    申请号:JP2010226172

    申请日:2010-10-06

    Abstract: PROBLEM TO BE SOLVED: To provide a chromium-free surface treated steel sheet excellent in corrosion resistance in a flat plate or after processing, even if subjected to alkaline decreasing by a user or exposed in a corrosive environment for long periods of time.SOLUTION: In a chromium-free surface treated steel sheet, on the surface of a galvanized steel sheet or an aluminum plated steel sheet, a surface treatment film is formed from a surface treatment composition obtained by compositely adding an organic phosphoric acid compound and an inorganic phosphoric acid compound at a prescribed ratio to a titanium-based aqueous liquid obtained by mixing a specific titanium compound with a hydrogen peroxide solution. The chromium-free surface treated steel sheet further has, on an upper layer of the surface treatment film, an upper layer film formed by coating and drying a coating material composition including a specified high molecular weight epoxy group-containing resin, a hardener having a group crosslinked with a hydroxyl group, a non-chromium based rust preventive additive and a solid lubricant containing a crystalline layered double hydroxide represented as [MM(OH)][A]-zHO.

    Abstract translation: 要解决的问题:为了提供在平板或加工后耐腐蚀性优异的无铬表面处理钢板,即使经受使用者的碱性降低或在腐蚀性环境中长时间暴露 。 解决方案:在无铬表面处理钢板中,在镀锌钢板或镀铝钢板的表面上,由表面处理组合物形成表面处理膜,所述表面处理组合物通过将有机磷酸化合物 和与通过将特定的钛化合物与过氧化氢溶液混合而得到的钛系水性液体的规定比例的无机磷酸化合物。 无铬表面处理钢板在表面处理膜的上层还具有通过涂布和干燥包含特定的含高分子量环氧基树脂的涂料组合物形成的上层膜,该涂料组合物具有 用羟基交联的基团,非铬基防锈添加剂和含有以[M 2 + 1 x M 3 + x (OH) 2 < SB>] [A n - ] x / n -zH 2 O. 版权所有(C)2012,JPO&INPIT

Patent Agency Ranking