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Some microwave and mechanical properties of carbon fiber-polypropylene and carbon black-polypropylene composites

journal contribution
posted on 1996-10-01, 00:00 authored by Akif KaynakAkif Kaynak, A Polat, U Yilmazer
The insertion loss, return loss and electromagnetic shielding effectiveness of carbon-black and carbon-fiber-filled polypropylene composites were studied in the 8 to 12 GHz frequency range. Both electromagnetic and mechanical measurements were performed at various filler concentrations. The maximum shielding values obtained for carbon-fiber-filled composites was over 40 dB for 35 wt% concentration. Young's modulus, ultimate strength and elongation at break with respect to filler concentration were also determined. The stiffness and brittleness of the composites increased with increasing filler concentration. The ultimate strength of the carbon-black-filled composites increased whereas the ultimate strength of carbon-fiber-filled composites decreased with the filler content. Elongation at break values for all composites dropped sharply with the filler concentration.

History

Journal

Materials research bulletin

Volume

31

Issue

10

Pagination

1195 - 1206

Publisher

Elsevier

Location

Kidlington, Eng.

ISSN

0025-5408

eISSN

1873-4227

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

Copyright notice

1996, Elsevier