PURPOSE: To simply obtain a thick molding by one process by forming a conductive material of bulky carbon fibers having bulk density under specific value to be selected from among paper, a mat, felt, chopped fibers and of polyamide resin.
CONSTITUTION: Bulky carbon fibers in the shape of paper, a mat, felt, chopped fibers having bulk density under 0.5g/cm3 are combined with polyamide resin in order to form a thick conductive material having the relatively small contents of carbon fibers. A rate of carbon fibers to this resin is, for instance, under 50wt.%. Various kinds of polyamide resin can be used, however, those capable of easily impregnating a relatively bulky material and having a low boiling point and a low melting point are suitable. In this way, by using bulky carbon fibers having bulk density under 0.5g/cm3, a thick molding can be simply obtained by one process.
Yumitate, Yasuhiko
Furukawa, Masaru
