Abstract
The thermal degradation behaviors of Kevlar 49, Kevlar 129 (Poly(p-phenylene terephthamide), Nomex (polyisophthaloyl metaphenylene diamine), and PBO(poly(p-phenylene benzobisoxazole)) fibers were measured by TG/FTIR and Py-GC/MS. The characteristic temperatures of the fibers in air were obtained by TG. It indicated that the initial degradation temperature of the PBO is the highest. The initial degradation temperature of Nomex fiber is the lowest, but the end decomposition temperature of Nomex is the highest. The gases released by the pyrolysis in air were mainly CO2, CO, H2O, NO, and HCN, also containing a small amount of NH3, and the absorption peaks of CO2 were the strongest. The results of Py-GC/MS showed that CO2 and benzene were the most pyrolysis fragment. With the change of pyrolysis temperature, the chromatogram and mass spectra results take a large variety. The pyrolysates can help us to study the pyrolysis process of high performance fibers.
Similar content being viewed by others
References
Brown JR, Ennis BC. Thermal analysis of Nomex and Kevlar fibers. Text Res J. 1977;47(1):62–6.
Brown JR, Hodgeman DKC. An ESR study of the thermal degradation of Kevlar 49 aramid. Polymer. 1982;23:365–8.
Brown JR, Power AJ. Thermal degradation of aramids: part I: pyrolysis/gaschromatography/mass spectrometry of poly(1,3-phenyleneisophthalamide) and poly(1,4-phenylene terephthalamide). Polym Degrad Stab. 1982;4:379–92.
Brown JR, Power AJ. Thermal degradation of aramids–part II: pyrolysis/gas chromatography/mass spectrometry of some model compounds of poly(1,3-phenyleneisophthalamide) and poly(1,4-phenylene terephthalamide). Polym Degrad Stab. 1982;4:479–90.
Villar-Rodil S, Martı′nez-Alonso A. Studies on pyrolysis of Nomex polyaramid fibers. J Anal Appl Pyrolysis. 2001;58(2):105–15.
Villar-Rodil S, Martinez-Alonso A, Tascon JMD. Nanoporous carbon fibres by pyrolysis of Nomex polyaramid fibres—TG and DTA studies. J Therm Anal Calorim. 2005;79(3):529–32.
Liu XY, Yu WD. Evaluation the thermal stability of high performance fibers by TGA. J Appl Polym Sci. 2006;99(3):937–44.
Yue CY, Sui GX, Looi HC. Effects of heat treatment on the mechanical properties of Kevlar 29 fiber. Compos Sci Technol. 2000;60(3):421–7.
Cai GM, Yang HH, Yu WD. Evaluation of light and thermal aging performance of aramid fabric. In: Textile Bioengineering and Informatics Symposium Hong Kong 2008, p. 313–317.
Tamargo-Martı′nez K, Villar-Rodil S. Thermal decomposition of poly(p-phenylenebenzobisoxazole) fibres: monitoring the chemical and nanostructural changes by Raman spectroscopy and scanning probe microscopy. Polym Degrad Stab. 2004;86:263–8.
Serge B, Xavier F, Franck P. Study of the thermal degradation of high performance fibres application to polybenzazole and p-aramid fibres. Polym Degrad Stab. 2001;74:283–90.
Wu Z, Li F, Huang L. The thermal degradation mechanism and thermal mechanical properties of two high performance heterocyclic polymer fibers. J Therm Anal Calorim. 2000;59:361–73.
Hao LC, Yu WD. Evaluation of thermal protective performance of basalt fiber nonwoven fabrics. J Therm Anal Calorim. 2010;100(2):551–5.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Cai, G.M., Yu, W.D. Study on the thermal degradation of high performance fibers by TG/FTIR and Py-GC/MS. J Therm Anal Calorim 104, 757–763 (2011). https://doi.org/10.1007/s10973-010-1211-0
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10973-010-1211-0