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《New Carbon Materials》 2001-04
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STUDY ON THE PREPARING OF POLYACRYLONITRILE-BASED CARBON FIBERS

WANG Yan zhi, ZHU Bo, WANG Yan xiang, CAI Hua su (Carbon Fibers Research Center, College of Material Science and Engineering, Shandong University (South Campus), Ji'nan 250061, China)  
Free radical solution copolymerization of itaconic acid and acrylonitrile was carried out in DMSO using azodiisobutyronitrile as initiator with changing the feed rate of itaconic acid. The resulting polymerization solution was spun to form PAN precursors of carbon fibers. The precursors were treated with CoSO 4 aqueous solution on the line. The structure and properties of untreated and treated PAN precursors and resultant carbon fibers were characterized by SEM and TEM, stabilization process and so on. It was suggested that CoSO 4 acted as a catalyst in the formation of ladder structure and reduces the temperature of cyclization. The carbon fibers developed from treated PAN fibers showed an improvement in tensile strength and Young's modulus.
【Fund】: 国家自然科学基金 ( 5 97830 0 2 );; 山东省自然科学基金 ( 981175 10 1)~~
【CateGory Index】: TQ342.74
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