光谱学与光谱分析 |
|
|
|
|
|
Research on Pyrolysis Process of Kevlar Fibers with Thermogravimetric Analysis coupled and Fourier Transform Infrared Spectroscopy |
YANG Ming, ZHU Xiao-ling, LIANG Guo-zheng* |
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China |
|
|
Abstract Modern industrial application and technologies require materials with superior mechanical and thermal properties. Kevlar fibers have been known as fibrous materials with good properties of high strength and high decomposition temperature which have become a hot research field in recent years. The properties of fibrous materials depend on their structures and compositions. Thermal decomposition processing of the materials is of great significance for their structures and thermal properties. As a new technique, thermogravimetric (TG) analysis coupled with Fourier transform infrared spectroscopy(FTIR), are able to analyze materials not only qualitatively but also quantitatively. This method has obvious advantages in researching the thermal decomposition of many materials. However, the thermal decomposition processing of Kevlar fibers is rarely reported in the literature, therefore, we firstly studied the pyrolysis behavior of Kevlar fibers with thermogravimetric analysis coupled with Fourier transform infrared spectroscopy at the temperature of 30~800 ℃. We not only obtained the processing of the Kevlar fibers’ thermal decomposition with great details but also the products of every stage. Experimental results exhibited that the decomposition of Kevlar fibers has experienced three stages: 100~240, 240~420 and 420~800 ℃. The weight loss of Kevlar fibers was quite slow before 500 ℃. The third stage was the main stage of the decomposition, and the amount of residue finally reached to a mass percent of 56.21%. FTIR analysis illustrated that free water released from Kevlar fibers at the first stage, followed by the dehydration and depolymerization which made polymer chains short. Finally the fiber fragments further reacted and produced the gases of small molecular mass, and the main products were water, ammonia, carbon monoxide and carbon dioxide. Generation rate of water was increased; the emission of ammonia was at the same rate; carbon monoxide was only produced at the temperature of 515~630 ℃, then turned into carbon dioxide. The release of carbon dioxide was on rise because of the conversion process of carbon monoxide, and then dropped to a certain value.
|
Received: 2014-11-25
Accepted: 2015-03-16
|
|
Corresponding Authors:
LIANG Guo-zheng
E-mail: lgzheng@suda.edu.cn
|
|
[1] Zhang H R, Yuan L, Liang G Z, et al. Applied Surface Science, 2014, 320: 883. [2] Bencomo-Cisneros J A, Tejeda-Ochoa A, García-Estrada J A, et al. Journal of Alloys and Compounds, 2012, 536(1): 456. [3] Srivastava A, Majumdar A, Butola B S. Materials Science and Engineering: A, 2011, 529: 224. [4] Kaliraj M, Narayanasamy P, Rajkumar M, et al. Applied Mechanics and Materials, 2014, 592-594: 122. [5] ZHAO Jia-xiang(赵稼祥). Fiber Composites(纤维复合材料), 1994, 2: 32. [6] Cuesta A, Martinez-Alonso A, Bradley R H, et al. Carbon, 1997, 35(7): 967. [7] Zhou H, Long Y Q, Zhang Y G, et al. Journal of Analytical and Applied Pyrolysis, 2014, 108: 19. [8] Sheng J F, Ji D X, Ji J B, et al. IERI Procedia, 2014, 8: 30. [9] Meng A H, Zhou H, Li Q H, et al. Journal of Analytical and Applied Pyrolysis, 2013, 104: 28. [10] Fan C, Yan J W, Huang Y R, et al. Fuel, 2015, 139: 502. |
[1] |
YAN Li-dong1, ZHU Ya-ming1*, CHENG Jun-xia1, GAO Li-juan1, BAI Yong-hui2, ZHAO Xue-fei1*. Study on the Correlation Between Pyrolysis Characteristics and Molecular Structure of Lignite Thermal Extract[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2023, 43(03): 962-968. |
[2] |
NI Zi-yue1, CHENG Da-wei2, LIU Ming-bo2, YUE Yuan-bo2, HU Xue-qiang2, CHEN Yu2, LI Xiao-jia1, 2*. The Detection of Mercury in Solutions After Thermal Desorption-
Enrichment by Energy Dispersive X-Ray Fluorescence[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(04): 1117-1121. |
[3] |
HU Chao-shuai1, XU Yun-liang1, CHU Hong-yu1, CHENG Jun-xia1, GAO Li-juan1, ZHU Ya-ming1, 2*, ZHAO Xue-fei1, 2*. FTIR Analysis of the Correlation Between the Pyrolysis Characteristics and Molecular Structure of Ultrasonic Extraction Derived From Mid-Temperature Pitch[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(03): 889-895. |
[4] |
WU Sheng-yang1,2, HU Ren-zhi1,2*, XIE Pin-hua1,2, LI Zhi-yan1,2, LIU Xiao-yan3, LIN Chuan1,4, CHEN Hao1,2, WANG Feng-yang1,2, WANG Yi-hui1,5, JIN Hua-wei1,2. Real-Time Measurement of NOy (Total Reactive Nitrogen Oxide) by Cavity Ring Down Spectrometer (CRDS)[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(06): 1661-1667. |
[5] |
YE Fa-wang1, WANG Jian-gang1, QIU Jun-ting1, ZHANG Chuan1, YU Xin-qi2, LIU Xiu2. Study on Correlation Between Total Organic Carbon, Soluble Hydrocarbon, Pyrolytic Hydrocarbon Content and Spectral Index in Source Rocks[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 40(04): 1001-1006. |
[6] |
SONG Yong-hui, LEI Si-ming, MA Qiao-na, HE Wen-jin, ZHOU Jun, TIAN Yu-hong*, LAN Xin-zhe. Research the Law of Gaseous Product Release in Co-Pyrolysis Process of Low-Rank Pulverized Coal by Thermo-Gravimetric Analyzer (TG) Coupled with Fourier Transform Infrared Spectroscopy (FTIR)[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2019, 39(02): 565-570. |
[7] |
JIAN Kuo1,2,LIU Shun-xi4,CHEN Yi-lin3,FU Xue-hai2,3*. Infrared Spectroscopic Study on the Structure Evolution of Low Rank Coal and Its Correlation with Carbon Isotope of Alkane Gas in Pyrolysis Process[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(07): 2070-2075. |
[8] |
FAN Hua1, YAO Gao-yang2, LIU Wei3, XING Zi-hui4, SHI Jin-ming5, GAO Bai1*, CHEN Yang6. Experimental Study on the Treatment of Mercury Contained Soil by Thermal Analytical Low Temperature Plasma Based on Cold Atomic Absorption Spectrophotometry[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(07): 2279-2283. |
[9] |
SONG Yong-hui, MA Qiao-na, HE Wen-jin, TIAN Yu-hong, LAN Xin-zhe. A Comparative Study on the Pyrolysis Characteristics of Direct-Coal-Liquefaction Residue Through Microwave and Conventional Methods[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(04): 1313-1318. |
[10] |
WANG Zhen-yu, QIU Shu, HE Zheng-bin*, YI Song-lin, MU Jun. Study of Sabina Chinensis Heartwood and Sapwood Pyrolysis with TG-FTIR Analysis[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(04): 1090-1094. |
[11] |
SONG Yong-hui, MA Qiao-na, HE Wen-jin, LAN Xin-zhe . Regularity of Gaseous Product Release During Direct Coal Liquefaction Residue Pyrolysis Process [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(07): 2017-2021. |
[12] |
LAN Xin-zhe1, 2, LUO Wan-jiang1, SONG Yong-hui1, ZHANG Qiu-li1, ZHOU Jun1*. Study on the Spectrum Research on the Process of Oil Shale Pyrolysis [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(04): 1121-1126. |
[13] |
ZHOU Jun1,2, YANG Zhe1, LIU Xiao-feng3, WU Lei4, TIAN Yu-hong1,2, ZHAO Xi-cheng1,2. Study on Microwave Co-Pyrolysis of Low Rank Coal and Circulating Coal Gas[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(02): 459-465. |
[14] |
BAO Yuan1, 2, JU Yi-wen1, WEI Chong-tao2, WANG Chao-yong2, LI Xiao-shi1 . Infrared Spectrum Studies of Hydrocarbon Generation and Structure Evolution of Peat Samples During Pyrolysis and Microbial Degradation[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2015, 35(03): 603-608. |
[15] |
LI Si-jin, MU Jun*, ZHANG Yu . Influence of Urea Formaldehyde Resin on Pyrolysis of Biomass: A Modeling Study by TG-FTIR[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2014, 34(06): 1497-1501. |
|
|
|
|