Conversion of carbon-graphite fibers to fibers of graphite oxide

Conversion of carbon-graphite fibers to fibers of graphite oxide

Graphite fibers were chemically oxidized in the liquid phase to fibers of graphite oxide. Initial resistivity increases as high as 10 4 were obtained but, when the oxidized fibers were exposed to the atmosphere, resistivities decreased again and reached an apparently steady state value of about 10 3...

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Veröffentlicht in:Materials science and engineering 1984-01, Vol.64 (2), p.149-155
Hauptverfasser: Leong, K., Forsman, W.C., Vogel, F.L.
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Sprache:eng
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Applied sciences
Building materials. Ceramics. Glasses
Chemical industry and chemicals
Exact sciences and technology
Refractory products
Special refractories
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container_issue 2
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container_title Materials science and engineering
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creator Leong, K.
Forsman, W.C.
Vogel, F.L.
description Graphite fibers were chemically oxidized in the liquid phase to fibers of graphite oxide. Initial resistivity increases as high as 10 4 were obtained but, when the oxidized fibers were exposed to the atmosphere, resistivities decreased again and reached an apparently steady state value of about 10 3 times the resistivity of the starting fibers. In one experiment the initial increase in resistivity amounted to a factor of 10 6. The best results were obtained on the most highly graphitized fibers. Electrochemical oxidation yielded a lower resistivity increase, about ten times, but provided a controllable method of synthesis and an insight into the mechanism of reaction. The oxidized fibers retained 84% of the tensile strength and 81% of the modulus of the pristine fibers.
doi_str_mv 10.1016/0025-5416(84)90099-5
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subjects Applied sciences
Building materials. Ceramics. Glasses
Chemical industry and chemicals
Exact sciences and technology
Refractory products
Special refractories
title Conversion of carbon-graphite fibers to fibers of graphite oxide
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