| 摘要 |
PURPOSE: A conductive sheet composition for shielding the electromagnetic wave and its preparation method are provided, to improve electromagnetic waves-shielding effect, electric conductivity, fluidity, dispersion and tensile strength. CONSTITUTION: The conductive sheet composition comprises 30.0-70.0 wt% of a conductive metal powder and 30.0-70.0 wt% of an organic binder, wherein the organic binder comprises 8.0-13.0 wt% of poly(vinyl chloride), 5.0-10.0 wt% of nitrocellulose, 4.0-6.0 wt% of dioctyl phthalate, 2.0-4.0 wt% of dibutyl phthalate, 0.5-1.0 wt% of phosphate, 40.0-62.5 wt% of toluene, 8.0-10.0 wt% of methyl ethyl ketone and 10.0-15.0 wt% of ethyl acetate. Preferably the conductive metal powder is at least one selected from the group consisting of Ag, Cu, Ag-coated Cu, Ni, Al, Sn and Zn, and has a flake, spherical, amorphous or mixed shape.
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