PHYSICAL-PROPERTIES OF VAPOR-GROWN CARBON-FIBERS

被引：87

作者：

TIBBETTS, GG ^{[1
]}

DOLL, GL ^{[1
]}

GORKIEWICZ, DW ^{[1
]}

MOLESKI, JJ ^{[1
]}

PERRY, TA ^{[1
]}

DASCH, CJ ^{[1
]}

BALOGH, MJ ^{[1
]}

机构：

[1] GM CORP,RES,DEPT ANALYT CHEM,WARREN,MI 48090

来源：

CARBON | 1993年 / 31卷 / 07期

关键词：

VAPOR-GROWN CARBON FIBERS; GROWTH OF CARBON FIBERS; CATALYTIC GROWTH OF CARBON; FILAMENTOUS CARBON; CARBON FILAMENTS;

D O I：

10.1016/0008-6223(93)90054-E

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Vapor-grown carbon fibers (VGCF) are produced by depositing a layer of pyrocarbon from the vapor phase on a catalytically grown carbon filament. This morphology determines many properties of the fiber, since the filament is more graphitic than the pyrocarbon. In this paper we compare VGCF produced by a continuous process with those grown on a substrate. Fibers having thicker pyrocarbon layers are less graphitic as measured by X-ray diffractometry, electron diffraction, and Raman spectroscopy. The bulk density of the fibers, near 2.03g/cm(3), is relatively high for carbon fibers; it decreases slightly as the pyrocarbon thickness increases. The surface area of the fibers determined by N-2 adsorption is not larger than the calculated geometric area, indicating that the surface is relatively smooth and free of pores. Each of these measurements indicates that fibers produced by a continuous process are comparable to those grown on substrates, with respect to graphitization and surface properties.

引用

页码：1039 / 1047

页数：9

共 11 条

[1] Adsorption of gases in multimolecular layers [J].