CHROMIUM FREE RESIN COMPOSITION FOR IMPROVED THERMAL AND SCRATCH RESISTANCE PROPERTIES, METHOD THEREOF, AND SURFACE-TREATED STEEL SHEET USING THE SAME

摘要

PURPOSE: A chromium-free resin composition with improved thermal and scratch resistance properties is provided to ensure excellent conductivity, corrosion resistance, and processability, and to be easily used as processing meterials. CONSTITUTION: A chromium-free resin composition with improved thermal and scratch resistance properties includes a water-soluble organic resin, silica particles surface-treated with silane coupling agent, a hardener for improving corrosion resistance of Ti or Zr organic oxide, and a solvent. A method for manufacturing a surface-treated steel plate comprises a step of drying the resin composition and coating it on the upper surface of the steel plate to become bond quantity 300 ~ 1,800mg/m^2.