| 초록 |
To improve electromagnetic interference shielding effectiveness(EMI-SE) of carbon nano fibers (CNF), CNF was deposited with nickel by electroless plating method. Plating time was given as a variable. The samples were named Raw, N1, N3, N5, N7. The surfaces of nickel plated carbon nano fibers were characterized by using ultra-high resolution scanning electron microscope (UHR-SEM). Also the thermal properties were analyzed by thermogravimetry (TGA), the electric properties were tested by sheet resistance analyzer and EMI shielding analyzer. As the result, nickel plated CNF has more high EMI-SE than the Raw-CNF. It is attributed to the Ni plating time and plating morphology. The electromagnetic shielding effectiveness (EMI-SE) of the carbon nano fibers enhanced with increased Ni plating time. But the N5 has high EMI-SE than the N7. Therefore, the uniformity of plating morphology on the surface has more effect on EMI shielding efficiency than the amount of nickel plating. |
