Zinciferous plated steel sheet excellent in press-formability and
corrosion resistance
    3.
    发明授权
    Zinciferous plated steel sheet excellent in press-formability and corrosion resistance 失效
    镀锌钢板,压制成型性和耐腐蚀性优异

    公开(公告)号:US5393605A

    公开(公告)日:1995-02-28

    申请号:US94077

    申请日:1993-07-22

    摘要: A zinciferous plated steel sheet excellent in press-formability and corrosion resistance, which comprises: a steel sheet, a zinciferous plating layer formed on at least one surface of the steel sheet, a chromate film formed on the zinciferous plating layer, and a resin film formed on the chromate film. The resin film comprises a solvent-base thermosetting resin, a solid internal lubricant and a rust-preventive pigment. The solvent-base thermosetting resin comprises: (A) urethane prepolymer containing a hydroxyl group, and (B) at least one of a block polyisocyanate compound and an amino resin as a curing agent. The urethane prepolymer containing a hydroxyl group comprises: (a) at least one of polyether polyol, polyester polyol and polyether-polyester polyol, (b) an isocyanate compound, and (c) dihydric alcohol. The solid internal lubricant comprises a polyethylene resin, and the content ratio thereof is within a range of from 1 to 30 weight parts relative to 100 weight parts of a solid component in the solvent-base thermosetting resin. The rust-preventive pigment comprises at least one of a chromate compound or silica, and the content ratio thereof is within a range of from 3 to 30 weight parts relative to 100 weight parts of the solid component in the solvent-base thermosetting resin.

    摘要翻译: PCT No.PCT / JP92 / 01618 Sec。 371日期:1993年7月22日 102(e)日期1993年7月22日PCT提交1992年12月10日PCT公布。 公开号WO93 / 11880 PCT 日期:1993年6月24日。一种压制成型性和耐腐蚀性优异的镀锌钢板,其特征在于,包括:钢板,形成在钢板的至少一个表面上的镀锌层,形成在镀锌层上的铬酸盐膜 镀层和形成在铬酸盐膜上的树脂膜。 树脂膜包括溶剂基热固性树脂,固体内部润滑剂和防锈颜料。 溶剂型热固性树脂包括:(A)含有羟基的氨基甲酸酯预聚物,和(B)至少一种嵌段多异氰酸酯化合物和氨基树脂作为固化剂。 含有羟基的氨基甲酸酯预聚物包括:(a)聚醚多元醇,聚酯多元醇和聚醚 - 聚酯多元醇中的至少一种,(b)异氰酸酯化合物和(c)二元醇。 固体内部润滑剂包含聚乙烯树脂,其含量比在溶剂型热固性树脂中相对于100重量份的固体成分为1〜30重量份。 防锈颜料包括铬酸盐化合物或二氧化硅中的至少一种,并且其含量比相对于溶剂型热固性树脂中固体成分的100重量份为3〜30重量份。