Zn-Fe-Mg Zn-Fe-Mg HOT-DIP PLATED STEEL SHEET WITH COMPOSITE RESIN COATING

摘要

The present invention relates to a Zn-Fe-Mg hot-dip plated steel sheet with a coated composite resin and a manufacturing method thereof, wherein the Zn-Fe-Mg hot-dip plated steel sheet with a coated composite resin comprises: a steel sheet; a Zn-Fe-Mg plated layer formed on one surface or both surfaces of the steel sheet; and an organic-inorganic composite resin layer formed on the plated layer. The organic-inorganic composite resin layer has a polymer resin, and the polymer resin has a numerical average molecular weight (M_n) of 5000-50000. Moreover, a glass transition temperature (T_g) is 10-50C.