Remarkable Temperature Sensitivity of Partially Carbonized Carbon Fibers with Different Microstructures and Compositions

In order to explore effect of structure on the temperature sensitivity of partially carbonized carbon fibers, different heat treatment temperatures (700, 750 and 800 °C) and heat treatment times (3 and 9 min) were used to prepare fibers with different structures. The electrical resistivities were mo...

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Autores principales:	Zijin Liu, Jun Wang, Chang Li, Cheng Zheng, Bin Zhang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	carbon fibers temperature sensitivity graphitized-like structure conductive mechanism Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/d672138fe12a4002b6b137ddb0fc7bf6
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spelling	oai:doaj.org-article:d672138fe12a4002b6b137ddb0fc7bf62021-11-25T18:16:13ZRemarkable Temperature Sensitivity of Partially Carbonized Carbon Fibers with Different Microstructures and Compositions10.3390/ma142270851996-1944https://doaj.org/article/d672138fe12a4002b6b137ddb0fc7bf62021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/22/7085https://doaj.org/toc/1996-1944In order to explore effect of structure on the temperature sensitivity of partially carbonized carbon fibers, different heat treatment temperatures (700, 750 and 800 °C) and heat treatment times (3 and 9 min) were used to prepare fibers with different structures. The electrical resistivities were monitored whilst the room temperature was increased from 30 to 100 °C, which was used to characterize the temperature sensitivity. The fibers showed negative temperature coefficients in the temperature range. Infrared spectra, an element analysis, a scanning electron microscope (SEM), Raman spectroscopy and X-ray diffraction measurements were used to study the microstructure of the fibers. Through the analysis, the proportions of the graphite-like structure, graphitization degree and size of the graphite-like structure crystallite influenced the temperature sensitivity. The main electron transfer method used for the fibers was variable-range hopping. This indicated that the fibers had a potential application of preparing thermistors in polymer composites.Zijin LiuJun WangChang LiCheng ZhengBin ZhangMDPI AGarticlecarbon fiberstemperature sensitivitygraphitized-like structureconductive mechanismTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 7085, p 7085 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	carbon fibers temperature sensitivity graphitized-like structure conductive mechanism Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	carbon fibers temperature sensitivity graphitized-like structure conductive mechanism Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Zijin Liu Jun Wang Chang Li Cheng Zheng Bin Zhang Remarkable Temperature Sensitivity of Partially Carbonized Carbon Fibers with Different Microstructures and Compositions
description	In order to explore effect of structure on the temperature sensitivity of partially carbonized carbon fibers, different heat treatment temperatures (700, 750 and 800 °C) and heat treatment times (3 and 9 min) were used to prepare fibers with different structures. The electrical resistivities were monitored whilst the room temperature was increased from 30 to 100 °C, which was used to characterize the temperature sensitivity. The fibers showed negative temperature coefficients in the temperature range. Infrared spectra, an element analysis, a scanning electron microscope (SEM), Raman spectroscopy and X-ray diffraction measurements were used to study the microstructure of the fibers. Through the analysis, the proportions of the graphite-like structure, graphitization degree and size of the graphite-like structure crystallite influenced the temperature sensitivity. The main electron transfer method used for the fibers was variable-range hopping. This indicated that the fibers had a potential application of preparing thermistors in polymer composites.
format	article
author	Zijin Liu Jun Wang Chang Li Cheng Zheng Bin Zhang
author_facet	Zijin Liu Jun Wang Chang Li Cheng Zheng Bin Zhang
author_sort	Zijin Liu
title	Remarkable Temperature Sensitivity of Partially Carbonized Carbon Fibers with Different Microstructures and Compositions
title_short	Remarkable Temperature Sensitivity of Partially Carbonized Carbon Fibers with Different Microstructures and Compositions
title_full	Remarkable Temperature Sensitivity of Partially Carbonized Carbon Fibers with Different Microstructures and Compositions
title_fullStr	Remarkable Temperature Sensitivity of Partially Carbonized Carbon Fibers with Different Microstructures and Compositions
title_full_unstemmed	Remarkable Temperature Sensitivity of Partially Carbonized Carbon Fibers with Different Microstructures and Compositions
title_sort	remarkable temperature sensitivity of partially carbonized carbon fibers with different microstructures and compositions
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/d672138fe12a4002b6b137ddb0fc7bf6
work_keys_str_mv	AT zijinliu remarkabletemperaturesensitivityofpartiallycarbonizedcarbonfiberswithdifferentmicrostructuresandcompositions AT junwang remarkabletemperaturesensitivityofpartiallycarbonizedcarbonfiberswithdifferentmicrostructuresandcompositions AT changli remarkabletemperaturesensitivityofpartiallycarbonizedcarbonfiberswithdifferentmicrostructuresandcompositions AT chengzheng remarkabletemperaturesensitivityofpartiallycarbonizedcarbonfiberswithdifferentmicrostructuresandcompositions AT binzhang remarkabletemperaturesensitivityofpartiallycarbonizedcarbonfiberswithdifferentmicrostructuresandcompositions
_version_	1718411408648962048

Remarkable Temperature Sensitivity of Partially Carbonized Carbon Fibers with Different Microstructures and Compositions

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