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⵵/ȣ 1992 / ȣ: V.4,no.4,Dec
1() PAN üκ Ȱ źҼ м(I)
2(Ÿ) Preparation and Analysis of Activated Carbon Fiber from PAN Precursor(I)
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ʷ In the PAN-based ACF manufacturing system stabilization step was improved with chemical treatment (preoxidation) in order to yield higher carbon content and to avoid excessive fragmentation during carbonization and activation process. The optimal condition of preoxidation was at 18 for 4 minutes in sodium glyceroxide in glycerine (concentration of NaOH was 0.02 meq/g). To investigate low temperature stabilization effect, preoxidized PAN fiber heated 22 to 26 as a function of treatment time and oxidative gas atmosphere, and analysed by infrared spectrum and TGA. As a results of IR and TGA, it was clear that impregnated[preoxidative] PAN had 14% higher residual than untreated PAN at 100 and the optimal condition of stabilization was at 26 for 3.5 hours within atmosphere.
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