PROCESS FOR PRODUCING FINE CARBON FIBER AGGLOMERATE

摘要

Disclosed is a method for manufacturing fine carbon fibers' aggregates having a median diameter of not more than 30 µm, which comprises a pulverization step where a composition which includes (a) fine carbon fibers' aggregates having a median diameter of not less than 30 µm and (b) a dispersion medium undergoes acceleration in order to form a turbulent flow and/or collision flow, thereby shearing force and/or impacting force exert on the (a) component included in the composition and thus the (a) component is pulverized, wherein the value of [I D /I G of fine carbon fibers' aggregates after pulverization of the (a) component] / [I D /I G of fine carbon fibers' aggregate before pulverization of the (a) component] (wherein the I D /I G is calculated from measurement values determined by Raman spectroscopic analysis using 514 nm light of the argon laser) is in the range of 0.7 to 1.5. According to this method, it is possible to obtain fine carbon fibers' aggregates which possess a good electrical conductivity and repress agglomeration.