고온 열처리에 따른 PAN계 탄소섬유의 발열특성

표대웅; 엄상용; 이영석; 유승곤; Daewoong Pyo; Sangyong Eom; Young-Seak Lee; Seungkon Ryu

Korean Chemical Engineering Research, Vol.49, No.2, 218-223, April, 2011

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고온 열처리에 따른 PAN계 탄소섬유의 발열특성

Exothermic Characteristics of PAN-based Carbon fiber According to High Temperature Treatment

표대웅, 엄상용, 이영석 ¹, 유승곤 ^†

충남대학교 화학공학과, 305-764 대전광역시 유성구 궁동 220
¹충남대학교 정밀응용화학과, 305-764 대전광역시 유성구 궁동 220

Daewoong Pyo, Sangyong Eom, Young-Seak Lee¹, and Seungkon Ryu^†

Dept. of Chemical Engineering, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon 305-764, Korea
¹Dept of Fine Chemical Engineering & Applied Chemistry, Chungnam National University, 220 Gung-dong, Yuseong-gu, Daejeon 305-764, Korea

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초록

범용 PAN계 탄소섬유를 1,500 ℃까지 열처리한 후 탄소함량, 결정화도, 결정크기를 분석하고 이들의 변화에 따른 표면의 발열특성을 조사하였다. PAN계 탄소섬유의 결정화도, 결정크기는 열처리 온도가 1,000에서 1,500 ℃로 증가하는 동안 각각 37.08에서 53.69%, 1.62에서 1.82 nm로 증가하였고, 탄소섬유의 초기표면발열온도는 결정화도, 결정크기가 증가할수록 1차식으로 비례하여 증가하였다. 따라서 탄소섬유의 결정화도와 결정크기를 표면발열온도의 상승을 측정하여 간접적으로 신속하게 추정할 수 있게 되었다.

General purpose PAN-based carbon fibers were heat treated up to 1500 ℃, and analyzed their carbon contents, crstallinity, and crystalline size(Lc). Exothermic characteristics of carbon fiber were investigated in relation to crystallinity, and crystalline size(Lc). Carbon contents, crystallinities, and crystalline size(Lc) of PAN-based carbon fibers increased from 37.08 to 53.69%, and 1.62 to 1.82 nm, respectively as the increase of heat treatment temperature from 1000 ℃ to 1500 ℃. Initial surface temperature of fiber tow also linearly increased as the increase of crystallinity, and crystalline size(Lc). Therefore, the crystallinity and crystal size(Lc) of carbon fibers can indirectly and rapidly be estimated by measuring the surface temperature increase.

Keywords:Carbon Fiber;Surface Temperature;Crystallinity;Crystalline Size

[References]

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Marsh H, “Introduction to Carbon Science,” Butterworths, London, 599 (1989)
Fitzer E, “Carbon Fiber and Their Composites,” Springer-verlag, New York (1984)
Yamaguchi T, Carbon., “Electronic Properties of Carbonized Polyacrylonitrile Fibers.”, 2, 95 (1964)
Robson D, Assabghy FYI, Ingram DJE, J. Phys. D. Appl. Phys., “Some Electronic Properties of Polyacrylonitrile-based Carbon Fiberes.", 169 (1972)
Lewin M, Preston J, “Handbook of Fiber Science and Technology: Vol. III, High Technology Fibers: Part A,” Marcel Dekker, New York (1985)
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Lavin JG, Boyington DR, Lahijani J, Nysten B, Issi JP, Carbon., “The Correlation of Thermal Conductivity with Electrical Resistivity in Mesophase Pitch-based Carbon Fiber.", 31, 1001 (1993)
Pradere C, Batsale JC, Goyheneche JM, Paillerb R, Dilhairec S, Carbon., “The Correlation of Thermal Conductivity with Electrical Resistivity in Mesophase Pitch-based Carbon Fiber.", 47, 743 (2009)
Lee JY, Oh JH, Yang XP, Ryu SK, Carbon Letter., “Relationship Between Exothermic Heat and Carbon Contents of Pitch-based Carbon Fiber”, 10, 202 (2009)
Alexander LE, “X-ray Diffraction Methods in Polymer Science", John Wiley & Sons, Inc. (1969)
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Katzman HA, Adams PM, Le TD, Hemminger CS, Carbon., “Characterization of Low Thermal Conductivity PAN-based Carbon Fibers”, 32, 379 (1994)
Marsh H, Griffiths J, “A High Resolution Electron Microscopy Study of Graphitization of Graphitizable Carbon,” Extended Abstracts, International Symposium on Carbon, Nov., Toyohashi, Japan, 81 (1982)
Hawthorne HM, “Carbon fiber-Their Composites and Applications," The Plastics Institute, London (1971)
Inagaki M, Kang F, “Carbon Materials Scince and Engineering", Tsinghua Univ. Press. (2006)
Oh JH, Lee JY, Kang SH, Rhee TH, Ryu SK, Carbon Letters., “Characterization of Heat Reformed Naphtha Cracking Bottom oil Extracts", 9, 289 (2008)
Oya N, Johnson DJ, Carbon., “Longitudinal Compressive Behaviour and Microstructure of PAN-based Carbon Fibers,”, 39, 635 (2001)

[Referenced By]

[Related Articles]

[1] Carbon., International committee for characterization and terminology of carbon “First Publication of 8 Further Tentative Definitions and Second Publication of Tentative Definition of Term 29.”, 25, 317 (1987)

[2] Marsh H, “Introduction to Carbon Science,” Butterworths, London, 599 (1989)

[3] Fitzer E, “Carbon Fiber and Their Composites,” Springer-verlag, New York (1984)

[4] Yamaguchi T, Carbon., “Electronic Properties of Carbonized Polyacrylonitrile Fibers.”, 2, 95 (1964)

[5] Robson D, Assabghy FYI, Ingram DJE, J. Phys. D. Appl. Phys., “Some Electronic Properties of Polyacrylonitrile-based Carbon Fiberes.", 169 (1972)

[6] Lewin M, Preston J, “Handbook of Fiber Science and Technology: Vol. III, High Technology Fibers: Part A,” Marcel Dekker, New York (1985)

[7] Donnet JB, Wang TK, Rebouillat S, Peng JCM, “Carbon Fibers,” 3rd ed., Marcel Dekker, 99-106 (1998)

[8] Lavin JG, Boyington DR, Lahijani J, Nysten B, Issi JP, Carbon., “The Correlation of Thermal Conductivity with Electrical Resistivity in Mesophase Pitch-based Carbon Fiber.", 31, 1001 (1993)

[9] Pradere C, Batsale JC, Goyheneche JM, Paillerb R, Dilhairec S, Carbon., “The Correlation of Thermal Conductivity with Electrical Resistivity in Mesophase Pitch-based Carbon Fiber.", 47, 743 (2009)

[10] Lee JY, Oh JH, Yang XP, Ryu SK, Carbon Letter., “Relationship Between Exothermic Heat and Carbon Contents of Pitch-based Carbon Fiber”, 10, 202 (2009)

[11] Alexander LE, “X-ray Diffraction Methods in Polymer Science", John Wiley & Sons, Inc. (1969)

[12] Endo MC, Kim C, Karaki TT, Kasai T, Mattews MJ, Brown SD, Carbon., “Structural Characterization of Milled Mesophase Pitch-based Carbon Fibers”, 36, 1633 (1998)

[13] Katzman HA, Adams PM, Le TD, Hemminger CS, Carbon., “Characterization of Low Thermal Conductivity PAN-based Carbon Fibers”, 32, 379 (1994)

[14] Marsh H, Griffiths J, “A High Resolution Electron Microscopy Study of Graphitization of Graphitizable Carbon,” Extended Abstracts, International Symposium on Carbon, Nov., Toyohashi, Japan, 81 (1982)

[15] Hawthorne HM, “Carbon fiber-Their Composites and Applications," The Plastics Institute, London (1971)

[16] Inagaki M, Kang F, “Carbon Materials Scince and Engineering", Tsinghua Univ. Press. (2006)

[17] Oh JH, Lee JY, Kang SH, Rhee TH, Ryu SK, Carbon Letters., “Characterization of Heat Reformed Naphtha Cracking Bottom oil Extracts", 9, 289 (2008)

[18] Oya N, Johnson DJ, Carbon., “Longitudinal Compressive Behaviour and Microstructure of PAN-based Carbon Fibers,”, 39, 635 (2001)