Microtexture and structure of some high-modulus, PAN-base carbon fibres

Nine samples of commercial, high-modulus, PAN-base carbon fibres were studied by TEM. Like high-temperature carbons, they are made of basic structural units which are almost isometric in shape but folded and entangled parallel to the fibre axis. Their diameters L a vary from 200 to 700 Å and the rad...

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Bibliographic Details
Published in:Fibre science & technology 1984, Vol.20 (3), p.177-198
Main Authors: Guigon, M., Oberlin, A., Desarmot, G.
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Chemical industry and chemicals
Exact sciences and technology
Refractory products
Special refractories
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Summary:Nine samples of commercial, high-modulus, PAN-base carbon fibres were studied by TEM. Like high-temperature carbons, they are made of basic structural units which are almost isometric in shape but folded and entangled parallel to the fibre axis. Their diameters L a vary from 200 to 700 Å and the radii of curvature r t vary from 20 to 130 Å. Mechanical properties were determined on single filaments in the vicinity of the areas studied by TEM. The value of the tensile strength to failure σ c was found to decrease as r t L a increased. The value of Young's modulus increased as 1 L a decreased, and the value of the electrical resistivity ϱ increased as 1 L a increased.
ISSN:0015-0568
DOI:10.1016/0015-0568(84)90040-X