LOW-VISCOSITY SILICON STEEL ENVIRONMENTALLY FRIENDLY INSULATING COATING, SILICON STEEL PLATE AND MANUFACTURING METHOD THEREFOR

The present disclosure relates to an insulating coating, which comprises the following components: a water-soluble metal inorganic salt A containing a water soluble phosphate A1, which comprises a water-soluble phosphate of at least one of aluminum, zinc, magnesium and manganese; a water dispersible organic emulsion B, which comprises at least one of an epoxy emulsion and a curing agent thereof, polyester, polyurethane, polyacrylate and an ethylene-vinyl acetate copolymer; an additive C, which comprises at least one of a structure reinforcing additive C1 and a heat-resistance reinforcing additive C2, wherein the structure reinforcing additive C1 comprises an inorganic nanoparticulate matter, and the heat-resistance reinforcing additive C2 is selected from at least one of boric acid and water-soluble salts of molybdenum, tungsten, vanadium and titanium; and an auxiliary agent D1 and a solvent D2, wherein the solid content mass part ratio of the water-soluble metal inorganic salt A to the water dispersible orga