ALUMINIM-ZINC HOT-PLATED STEEL PLATE HAVING EXCELLENT WEATHER RESISTANCE, CORROSION RESISTANCE AND ALKALI RESISTANCE, AND MANUFACTURING METHOD AND SURFACE TREATING AGENT THEREFOR

摘要

Disclosed is an aluminium-zinc hot-plated steel plate having excellent weather resistance, corrosion resistance and alkali resistance, and an environmental-friendly surface treating agent therefor, wherein after the surface treatment of the aluminium-zinc hot-plated steel plate using an environmental-friendly surface treating agent consisting of the components of a matrix resin compounded from a particular solvent-free aqueous aliphatic polyurethane dispersion and aqueous polyurethane-acrylic acid copolymer, an organic silicon compound, a matrix resin curing agent, a water-soluble metal salt compound and a high-density polyethylene lubrication auxiliary etc., the formed surface-treated aluminium-zinc hot-plated steel plate has comprehensive properties of excellent weather resistance, corrosion resistance and alkali resistance, and good machine formability etc.

主权项

1. An aluminium-zinc hot-plated steel plate having excellent weather resistance, corrosion resistance and alkali resistance, the plate comprising a surface comprising an environmental-friendly organic-inorganic composite protection film, the film comprising:
(A) 50-90 wt % complex matrix resin; (B) 2-25 wt % organic silicon compound; (C) 1-15 wt % matrix resin curing agent; (D) 0.1-3 wt % metal salt compound; (E) 1-15 wt % water-soluble zirconium compound; and (F) 0.4-4 wt % lubrication auxiliary of high-density polyethylene particles or a lubrication auxiliary of polytetrafluoroethylene particles.