Abstract
This paper studies the pyrolysis mechanisms of Nomex insulation paper in nitrogen and air atmospheres. The Nomex insulation paper is composed of 93% poly (m-phenylene isophthalamide) (PMIA) fibers and 7% inorganic substances based on elemental analysis. Using the thermogravimetry, it is found that the pyrolysis behaviors in nitrogen and air are similar below 770 K, with large discrepancies identified in the temperature range of 770–1073 K. The peak mass loss rate in air is 9 times higher than that in nitrogen. The kinetic analysis shows that the average activation energy (\(E\)) in air is lower than that in nitrogen by 32% when the temperature is higher than 770 K, indicating a lower thermal stability. The PMIA fibers are found decomposing more seriously in air using SEM. Below 770 K, the functional groups of two atmospheres are mainly produced by the breakage of amide bonds and formation of aromatic nitrile. Unlike nitrogen, the organic substances in the solid residue are mostly oxidized at 1073 K in air. Consequently, the maximum productions of H2O, CO2 and CO in air are nearly 5 times higher than those of nitrogen, and the HCN generated during pyrolysis is further oxidized to NOx in air. Combining with the results of Py-GC/MS, it is inferred that the small molecules generated by the degradation of PMIA molecular chains, especially the benzene rings, will experience oxidization reactions in air atmosphere, with large amounts of H2O, CO2, CO and NOx produced.
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References
Trigo-López M, Miguel-Ortega Á, Vallejos S et al (2015) Intrinsically colored wholly aromatic polyamides (aramids). Dyes Pigm. https://doi.org/10.1016/j.dyepig.2015.06.027
Li L, Song J, Wang Z et al (2020) Investigation on space charge properties of Nomex insulation paper in the mining dry type transformer during hygrothermal ageing. IET Sci Meas Technol 14(5):576–584. https://doi.org/10.1049/iet-smt.2019.0215
Brown, J R,Ennis, B C. (1977). Thermal Analysis of Nome® and Kevlar® Fibers Textile Research Journal 4762: 66.
Perepelkin KE, Andreeva IV, Pakshver EA et al (2003) Thermal characteristics of para-aramid fibres. Fibre Chem 35(4):265–269. https://doi.org/10.1023/b:fich.0000003476.55891.26
Li N, Zhang X, Yu J et al (2019) Kinetic study of copolymerized PMIA with ether moiety under air pyrolysis. J Therm Anal Calorim 140(1):283–293. https://doi.org/10.1007/s10973-019-08809-1
Zhang C, Jiang Y, Sun J et al (2020) Investigation of the influence of supercritical carbon dioxide treatment on meta-aramid fiber: Thermal decomposition behavior and kinetics. J CO2 Utilization 37:85–96. https://doi.org/10.1016/j.jcou.2019.10.007
Villar-Rodil S, Paredes JI, Martínez-Alonso A et al (2001) Atomic force microscopy and infrared spectroscopy studies of the thermal degradation of nomex aramid fibers. Chem Mater 13(11):4297–4304. https://doi.org/10.1021/cm001219f
Villar-Rodil S, Martìnez-Alonso, A, Tascón, J M D. (2001) Studies on pyrolysis of Nomex polyaramid fibers. J Analyt Appl Pyrolysis 58:59105–59115. https://doi.org/10.1016/s0165-2370(00)00124-8
Sun N, Liang Y, Xu Z et al (2013) The thermal degradation behavior of meta- and para- hetero-amide fibers by TGA-FTIR. J Polym Eng 33(4):337–344. https://doi.org/10.1515/polyeng-2012-0028
Brown JR, Power AJ (1982) Thermal degradation of aramids—Part II: Pyrolysis/gas chromatography/mass spectrometry of some model compounds of poly(1,3-phenylene isophthalamide) and poly(1,4-phenylene terephthalamide). Polym Degrad Stab 4(6):479–489. https://doi.org/10.1016/0141-3910(82)90018-0
Brown JR, Power AJ (1982) Thermal degradation of aramids: Part I—Pyrolysis/gas chromatography/mass spectrometry of poly(1,3-phenylene isophthalamide) and poly(1,4-phenylene terephthalamide). Polym Degrad Stab 4(5):379–392. https://doi.org/10.1016/0141-3910(82)90044-1
Schulten HR, Plage B, Ohtani H et al (1987) Studies on the thermal degradation of aromatic polyamides by pyrolysis-field ionization mass spectrometry and pyrolysis-gas chromatography. Die Angewandte Makromolekulare Chemie 155(1):1–20. https://doi.org/10.1002/apmc.1987.051550101
Zhang X, Tang X, Wang R et al (2017) Thermal degradation behaviors and fire retardant properties of poly(1,3,4-oxadiazole)s (POD) and poly(m-phenylene isophthalamide) (PMIA) fibers. Fibers and Polymers 18(8):1421–1430. https://doi.org/10.1007/s12221-017-1185-7
Bourbigot S, Flambard X, Poutch F (2001) Study of the thermal degradation of high performance fibres application to polybenzazole and p-aramid fibres. Polym Degrad Stab 74(2):283–290. https://doi.org/10.1016/s0141-3910(01)00159-8
Perepelkin KE, Malan’ina OB, Basok MO et al (2005) Thermal degradation of thermostable aromatic fibres in air and nitrogen medium. Fibre Chem 37(3):196–198. https://doi.org/10.1007/s10692-005-0079-4
Cai G, Yu W (2011) Study on the thermal degradation of high performance fibers by TG/FTIR and Py-GC/MS. Thermal Analysis and Calorimetry 104(2):757–763. https://doi.org/10.1007/s10973-010-1211-0
Yin F, Tang C, Wang Q et al (2018) Molecular dynamics simulations on the thermal decomposition of meta-aramid fibers. Polymers 10(7):691. https://doi.org/10.3390/polym10070691
Wang L, Chen S, Xie L et al (2017) Preparation and characterization of modified poly(m-phenylene terephthalamide) and its fiber. Polym Int 66(11):1480–1486. https://doi.org/10.1002/pi.5400
Doyle CD (1962) Kinetic analysis of thermogravimetric data. J Appl Polym Sci 6(19):120. https://doi.org/10.1002/app.1962.070061914
Kissinger HE (1957) Reaction kinetics in differential thermal analysis. Anal Chem 29(11):1702–1706. https://doi.org/10.1021/ac60131a045
Murray P, White J (1955) Kinetics of the thermal dehydration of clays. Part IV.Interpretation of the differential thermal analysis of the clay minerals. British Ceramic Trans 54:204–238
Chen R, Li Q, Xu X et al (2019) Pyrolysis kinetics and reaction mechanism of representative non-charring polymer waste with micron particle size. Energy Convers Manage. https://doi.org/10.1016/j.enconman.2019.111923
Chen R, Lu S, Zhang Y et al (2017) Pyrolysis study of waste cable hose with thermogravimetry/Fourier transform infrared/mass spectrometry analysis. Energy Convers Manage. https://doi.org/10.1016/j.enconman.2017.09.071
He Q, Ding L, Gong Y et al (2019) Effect of torrefaction on pinewood pyrolysis kinetics and thermal behavior using thermogravimetric analysis. Biores Technol. https://doi.org/10.1016/j.biortech.2019.01.138
Li K, Zou Y, Bourbigot S et al (2021) Pressure effects on morphology of isotropic char layer, shrinkage, cracking and reduced heat transfer of wooden material. Proc Combust Inst 38(3):5063–5071. https://doi.org/10.1016/j.proci.2020.07.072
Amer M, Brachi P, Ruoppolo G et al (2021) Pyrolysis and combustion kinetics of thermally treated globe artichoke leaves. Energy Convers Manage. https://doi.org/10.1016/j.enconman.2021.114656
Wu X, Bourbigot S, Li K et al (2022) Co-pyrolysis characteristics and flammability of polylactic acid and acrylonitrile-butadiene-styrene plastic blend using TG, temperature-dependent FTIR, Py-GC/MS and cone calorimeter analyses. Fire Saf J. https://doi.org/10.1016/j.firesaf.2022.103543
Suárez-Garćia, F, Martĺnez-Alonso, A, Tascón, J M D. (2004) Activated carbon fibers from Nomex by chemical activation with phosphoric acid. Carbon 42(8–9):1419–1426. https://doi.org/10.1016/j.carbon.2003.11.011
Li N, Zhang X, Yu J et al (2020) Increased Hydrogen-bonding of Poly(m-phenylene isophthalamide) (PMIA) with Sulfonate Moiety for High-performance Easily Dyeable Fiber. Chin J Polym Sci 38(11):1230–1238. https://doi.org/10.1007/s10118-020-2416-8
Chen M, Xiao C, Wang C et al (2018) Preparation and characterization of a novel thermally stable thin film composite nanofiltration membrane with poly (m-phenyleneisophthalamide) (PMIA) substrate. J Membr Sci. https://doi.org/10.1016/j.memsci.2017.12.040
Chen L, Hu Z, Xie X et al (2006) Properties and Structures of Terephthalyl Chloride (TPC) Modified meta-Aramid Copolymers. J Macromol Sci Part A Pure Appl Chem 43(11):1741–1748. https://doi.org/10.1080/10601320600939429
Suárez-García F, Martínez-Alonso A, Tascón JMD (2004) Nomex polyaramid as a precursor for activated carbon fibres by phosphoric acid activation. Temperature and time effects. Microporous Mesoporous Mater 75(1–2):73–80. https://doi.org/10.1016/j.micromeso.2004.07.004
Zou Y, Li Y, Bourbigot S et al (2021) Determination of solid-phase reaction mechanism and chlorine migration behavior of co-pyrolyzing PVC CaCO3 based polymer using temperature-dependent FTIR and XRD analysis. Polym Degrad Stab. https://doi.org/10.1016/j.polymdegradstab.2021.109741
Villar-Rodil S, Suárez-García F, Paredes JI et al (2005) Activated carbon materials of uniform porosity from polyaramid fibers. Chem Mater 17(24):5893–5908. https://doi.org/10.1021/cm051339t
Irmawati R, Noorfarizan Nasriah MN, Taufiq-Yap YH et al (2004) Characterization of bismuth oxide catalysts prepared from bismuth trinitrate pentahydrate: influence of bismuth concentration. Catal Today 93(95):701–709. https://doi.org/10.1016/j.cattod.2004.06.065
Fathy M, Zayed MA, Moustafa YM (2019) Synthesis and applications of CaCO3/HPC core-shell composite subject to heavy metals adsorption processes. Heliyon 5(8):e02215.https://doi.org/10.1016/j.heliyon.2019.e02215
Li L, Yang Y, Lv Y et al (2020) Porous calcite CaCO3 microspheres: Preparation, characterization and release behavior as doxorubicin carrier. Colloids Surf, B. https://doi.org/10.1016/j.colsurfb.2019.110720
García JM, García FC, Serna F et al (2010) High-performance aromatic polyamides. Prog Polym Sci 35(5):623–686. https://doi.org/10.1016/j.progpolymsci.2009.09.002
Liang S, Wang F, Liang J et al (2020) Synergistic effect between flame retardant viscose and nitrogen-containing intrinsic flame-retardant fibers. Cellulose 27(10):6083–6092. https://doi.org/10.1007/s10570-020-03203-9
Zhang X, Shi M (2019) Flame retardant vinylon/poly(m-phenylene isophthalamide) blended fibers with synergistic flame retardancy for advanced fireproof textiles. J Hazard Mater. https://doi.org/10.1016/j.jhazmat.2018.10.091
Chen R, Li Q, Xu X et al (2019) Comparative pyrolysis characteristics of representative commercial thermosetting plastic waste in inert and oxygenous atmosphere. Fuel. https://doi.org/10.1016/j.fuel.2019.02.129
Gong Z, Xia H, Liu Z et al (2016) TG-MS Study on Coal/Char Combustion by Equivalent Characteristic Spectrum Analysis; 8th International Symposium on Coal Combustion (ISCC). Tsinghua Univ, Beijing, pp 19–222015
Chen H, Namioka T, Yoshikawa K (2011) Characteristics of tar, NOx precursors and their absorption performance with different scrubbing solvents during the pyrolysis of sewage sludge. Appl Energy 88(12):5032–5041. https://doi.org/10.1016/j.apenergy.2011.07.007
Matsueda M, Mattonai M, Iwai I et al (2021) Preparation and test of a reference mixture of eleven polymers with deactivated inorganic diluent for microplastics analysis by pyrolysis-GC-MS. J Anal Appl Pyrol. https://doi.org/10.1016/j.jaap.2020.104993
Khanna YP, Pearce EM, Smith JS et al (1981) Aromatic polyamides. II. Thermal degradation of some aromatic polyamides and their model diamides. J Polym Sci Polym Chem Ed 19(11):2817–2834. https://doi.org/10.1002/pol.1981.170191115
Karacan I, Erzurumluoğlu L (2015) The effect of carbonization temperature on the structure and properties of carbon fibers prepared from poly(m-phenylene isophthalamide) precursor. Fibers and Polymers 16(8):1629–1645. https://doi.org/10.1007/s12221-015-5030-6
Ramani R, Kotresh TM, Indu Shekar R et al (2018) Positronium probes free volume to identify para- and meta-aramid fibers and correlation with mechanical strength. Polymer. https://doi.org/10.1016/j.polymer.2017.11.064
Li K, Li Y, Zou Y et al (2022) Improving the fire performance of structural insulated panel core materials with intumescent flame-retardant epoxy resin adhesive. Fire Technol. https://doi.org/10.1007/s10694-021-01203-0
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This work was supported by the Science and Technology Project of State Grid Corporation of China (521205200049).
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Zhang, J., Guo, Y., Chen, Q. et al. Kinetic Analysis, Solid Residues and Volatile Products of Pyrolyzing Nomex Insulation Paper in Nitrogen and Air Atmosphere. Fire Technol 60, 1119–1141 (2024). https://doi.org/10.1007/s10694-022-01266-7
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DOI: https://doi.org/10.1007/s10694-022-01266-7