ELECTRICAL AND SHIELDING PROPERTIES OF ABS RESIN FILLED WITH NICKEL-COATED CARBON-FIBERS

Authors
Citation
Gg. Lu et al., ELECTRICAL AND SHIELDING PROPERTIES OF ABS RESIN FILLED WITH NICKEL-COATED CARBON-FIBERS, Composites science and technology, 56(2), 1996, pp. 193-200
Citations number
10
Categorie Soggetti
Materials Sciences, Composites
ISSN journal
02663538
Volume
56
Issue
2
Year of publication
1996
Pages
193 - 200
Database
ISI
SICI code
0266-3538(1996)56:2<193:EASPOA>2.0.ZU;2-R
Abstract
Electrical conductivity and shielding effectiveness of nickel-coated c arbon fibers and their composites have been studied and the results ar e presented in this paper. A continuous electroplating device was used to plate nickel over the surface of the carbon fibers. The resistivit y of Ni-coated carbon fibers decreases with an increase in plating tim e. The optimum thickness of the coating is 0.2-0.5 mu m. A solvent met hod and Brabender mixing were used to prepare the composites of Ni-coa ted carbon fibers in ABS resin, the resistivity of which decreases wit h an increase in fiber content. At the same fiber content, the conduct ivity of the composites filled with Ni-coated carbon fibers is much gr eater than that of ordinary carbon-fiber-filled composites. To reach t he same resistivity as carbon-fiber-filled composites, the use of Ni-c oated carbon fibers as filler can greatly decrease the required volume fraction of fibers. The shielding effectiveness of the composites was obtained by experiment and by theoretical calculation; at high freque ncies, the two correspond very well. From experimental measurement, th e shielding effectiveness of ABS resin filled with 10 vol.% of Ni-coat ed carbon fibers is about 50 dB.