WATER-SOLUBLE, ENVIRONMENTALLY-FRIENDLY, SELF-ADHESIVE INSULATING COATING FOR SILICON STEEL

摘要

The present disclosure provides a water-soluble, environment-friendly, self-bonding insulating coating material for silicon steel, comprising a thermosetting aqueous film-forming resin, a thermoplastic aqueous film-forming resin, inorganic nanoparticles, auxiliary agent, solvent and pure water. the solid weight of the thermosetting aqueous film-forming resin accounts for 0.1-50% of the total weight of the coating material, the solid weight of the thermoplastic aqueous film-forming resin accounts for 0.1-60% of the total weight of the coating material, the solid weight of the inorganic nanoparticles accounts for 0.1-10% of the total weight of the coating material, the weight of auxiliary agent and solvent accounts for 5-25% of the total weight of the coating material. The coating material can produce a thin, sticky, insulation, none-edge-overflow self-bonding coating product. During second curing molding of a laminated iron core, excessive pressure and temperature are not required, thereby shortening the curing time, and increasing the iron core processing efficiency.