Circulating flow reactor for recycling of carbon fiber from carbon fiber reinforced epoxy composite

Seok-Ho Lee; Hwan-Oh Choi; Jung-Seok Kim; Cheul-Kyu Lee; Yong-Ki Kim; Chang-Sik Ju

Korean Journal of Chemical Engineering, Vol.28, No.2, 449-454, February, 2011

DOI10.1007/s11814-010-0394-1 Export Citation

Circulating flow reactor for recycling of carbon fiber from carbon fiber reinforced epoxy composite

Seok-Ho Lee, Hwan-Oh Choi, Jung-Seok Kim¹, Cheul-Kyu Lee¹, Yong-Ki Kim¹, and Chang-Sik Ju^†

Department of Chemical Engineering, Pukyong National University, 100 Yongdang-dong, Nam-gu, Busan 608-739, Korea
¹Korea Railroad Research Institute, 360-1 Woram-dong, Uiwang-si, Gyeonggi-do 437-757, Korea

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For the purpose of development of a chemical recycling process for carbon fiber from carbon fiber reinforced epoxy composite, a new chemical recycling system using nitric acid aqueous solution has been proposed. The recycling system is composed of hexahedral circulating flow reactor made of quartz, Teflon supporter, acid resistance pump and auxiliaries. Epoxy matrix in the composite was effectively decomposed by nitric acid aqueous solution in the circulating flow reactor and carbon fiber could be recycled without any tangle or disturbance. Optimum conditions for the recycling process have been experimentally established. Tensile strength loss of recycled carbon fiber and composition of liquid phase decomposition products were analyzed.

Keywords:Recycling;Carbon Fiber;Epoxy Composite;Circulating Flow Reactor;Nitric Acid;Decomposition

[References]

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Braun D, von Gentzkow W, Rudolf AP, Polym. Degrad. Stability., 74, 25 (2001)
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Othmer K, John Wiley & Sons, New York, 9, 267 (1984)
Dang WR, Kubouchi M, Yamamoto S, Sembokuya H, Tsuda K, Polymer, 43(10), 2953 (2002)
Dang WR, Kubouchi M, Sembokuya H, Tsuda K, Polymer, 46(6), 1905 (2005)
Dilafruz K, Kubouchi M, Dang W, Sembokuya H, Tsuda K, Proc. EcoDesign 2003, 2B-4, Tokyo, 333 (2003)
Liu Y, Meng L, Huang Y, Du J, J. Appl. Polym. Sci., 95, 1912 (2004)

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[1] Sato Y, Kondo Y, Tsujita K, Kawai N, Polym. Degrad. Stability., 89, 317 (2005)

[2] Braun D, von Gentzkow W, Rudolf AP, Polym. Degrad. Stability., 74, 25 (2001)

[3] Lu MG, Shim MJ, Kim SW, J. Appl. Polym. Sci., 75(12), 1514 (2000)

[4] Torres T, de Marco I, Caballero BM, Laresgoiti MF, Lagarreta JA, Cabrero MA, Chomon MJ, J. Anal. Appl. Pyrol., 58, 189 (2000)

[5] Chen KS, Yeh RZ, J. Hazard. Mater., 49, 105 (1996)

[6] Torres A, de Marco I, Caballero BM, Laresgoiti MF, Legarreta JA, Cabrero MA, Gonzalez A, Chomon MJ, Gondra K, Fuel, 79(8), 897 (2000)

[7] Pickering SJ, Composites: Part A., 37, 1206 (2006)

[8] Kouparitsas CE, Kartalis CN, Varelidis PC, Tsenoglou CJ, Papaspyrides CD, Polym. Comp., 23, 682 (2002)

[9] Iji M, J. Mater. Sci., 33(1), 45 (1998)

[10] Othmer K, John Wiley & Sons, New York, 9, 267 (1984)

[11] Dang WR, Kubouchi M, Yamamoto S, Sembokuya H, Tsuda K, Polymer, 43(10), 2953 (2002)

[12] Dang WR, Kubouchi M, Sembokuya H, Tsuda K, Polymer, 46(6), 1905 (2005)

[13] Dilafruz K, Kubouchi M, Dang W, Sembokuya H, Tsuda K, Proc. EcoDesign 2003, 2B-4, Tokyo, 333 (2003)

[14] Liu Y, Meng L, Huang Y, Du J, J. Appl. Polym. Sci., 95, 1912 (2004)