Abstract
For the oxidation curing of polycarbosilane (PCS) fibers in air, a first-order reaction based on the weight gainw (in percentage) was approached with the kinetic equationdwldt=k(w m-w). The maximum weight gain wm was observed to be 16% under normal oxidation conditions and the activation energyE to be 79.27 kJ/mol. The numeric integration based on the kinetics provides a precise prediction of the curing degree of PCS fibers under various heating programs and conditions.
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References
Bahl, O. P. and Manocha, L. M.,“Effect of Preoxidation Condition on Mechanical Properties of Carbon Fibres,”Carbon,13, 297 (1975).
Filipuzzi, L. and Naslain, R,“Oxidation Kinetics of SiC-based Ceramic Fibers,”Adv. Struct. Inorg. Composites, 35 (1992).
Grassie, N. and Moguchan, R.,“Pyrolysis of Polyacrylonitride and Related Polymers-VI. Acrylonitride Copolymers Containing Carboxylic Acid and Amide,”Eur. Polym. J.,8, 257 (1972).
Hasegawa, Y.,“Synthesis of Continuous Silicon Carbide Fibre, Part 6. Pyrolysis Process of Cured Polycarbosilane Fibre and Structure of SiC Fibre,”J. Mater. Sci.,24(3), 1177(1989).
Herman, S., Dilhan, M. K. and Suphan, K.,“Thermal Behavior and Curing Kinetics of Poly(carbosilane),”J. Appl. Polym. Sci.,42, 1087 (1991).
Ishikawa, T., Kohtoku, Y., Kumagawa, K., Yamamura, T. and Nagasawa, T.,“High-Strength Alkali-Resistant Sintered SiC Fiber Stable to 2,200 ‡C,”Nature,391, 773 (1998).
Kang, P. H. and Yang, H. S.,“Synthesis and Characterization of Poly (dimethylsilylene-diphenylsilylene) as a Precursor to Silicon Carbide,”Korean J. Chem. Eng.,15(6), 585 (1998).
Livage, J., Sanchez, C. and Babonneau, F.,“Chemistry of Advanced Materials,” ed. Interracnte, L. V. and Hampden-Smith, M. J., Wiley-VCH, NY., Ch. 9 (1998).
Nam, J. D. and Seferis, J. C.,“Generalized Composite Degradation Kinetics for Polymeric Systems under Isothermal and Nonisothermal Conditions,”J. Polym. Sci.: Part B: Polym. Phys.,30, 455 (1992).
Shimoo, T., Chen, H M. and Okamura, K.,“Mechanism of Oxidation of Si-C-O Fiber,”J. Ceram. Soc. Jpn.,100(7), 929 (1992).
Taki, T., Inui, M., Okamura, K., Sato, M. and Seguchi, T.,“A Study of Nitridation Process of Polycarbosilane Fibers by Solid-State High-Resolution NMR,”Applied Magnetic Resonance,2, 61 (1991).
Wang, H., Li, X. D., Peng, P., Kim, D. P. and Hong, L. Y.,“Thermostatic Pyrolysis Process of Cured Polycarbosilane Fiber,”Korean J. Chem. Eng.,20(3), 587 (2003).
Yajima, S., Okamura, K., Hayashi, J. and Omori, M.,“Synthesis of Continuous SiC Fiber with High Tensile Strength,”J. Am. Ceram. Soc.,59(7-8), 324 (1976).
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Wang, H., Li, Xd., Li, Xx. et al. The kinetics of oxidation curing of polycarbosilane fibers. Korean J. Chem. Eng. 21, 901–904 (2004). https://doi.org/10.1007/BF02705537
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DOI: https://doi.org/10.1007/BF02705537