EMI SHIELDING COATING COMPOSITION

摘要

Provided is an electromagnetic wave-shielding coating composition, which uses recycled materials recovered from electronic scraps or waste lithium ion batteries, has excellent heat resistance, and shows excellent electromagnetic wave shielding efficiency. The electromagnetic wave-shielding coating composition comprises: 15-45 wt% of copper micropowder recovered from copper foil of electronic scraps; 15-5 wt% of cobalt oxide powder containing carbon powder, recovered from waste lithium ion batteries; and 70-50 wt% of an organic binder. The organic binder comprises polyamic acid, polysulfone and m-cresol dissolved in N-methyl pyrrolidone as a solvent in a ratio of 70:20:10. The copper micropowder is obtained from copper foil separated from scraps of copper clad laminate.