Insight into the origin of oxidation behaviors of carbon fiber reinforced carbon aerogel composites with different porous skeletons

doi:10.1016/j.carbon.2023.118008

IMR OpenIR

	Insight into the origin of oxidation behaviors of carbon fiber reinforced carbon aerogel composites with different porous skeletons
	Zhang, Weiwei 1,2; Hu, Chenglong 1; Li, Jian 1; Zhao, Rida 1; Pang, Shengyang 1; Liang, Bin 1; Tang, Sufang 1
通讯作者	Tang, Sufang(sftang@imr.ac.cn)
	2023-06-05
发表期刊	CARBON
ISSN	0008-6223
卷号	209 页码:13
摘要	Carbon fiber reinforced carbon aerogel (C/CA) composites are promising lightweight insulators for the thermal protection of aerospace vehicles at ultra-high temperatures. However, it is seriously lack of understanding their oxidation behaviors despite its importance for the applications in oxygen-containing environments. Herein, we fabricate two kinds of C/CA using resorcinol-formaldehyde (RF) and phenolic resin (PR) as precursors and investigate the effects of original and heat-treated skeletons on their oxidation behaviors. The results show that the composites derived from RF have the lower mass losses at 600-800 degrees C after 35-min oxidation with an apparent activation energy of 50.80 kJ mol-1 than the counterparts derived from PR with the value of 40.14 kJ mol- 1. It can be explained by the existence of more impurities and macropores as well as the larger residual tensile stress in C/CA from PR. The temperature-dependent oxidation morphology evolution is similar to the time-dependent evolution, changing from the gradually enlarged pores, to the formed grooves and even islandlike structure. However, the composites from RF have reversely the higher mass losses when they were heat treated at 1600 and 2300 degrees C, which is attributed to its relatively lower crystallinity and larger mesopore surface area. The significant increase in crystallinity and decrease in impurities and specific surface area are the main explanations for the remarkably lower oxidation rates after heat treatment. The oxidation behaviors of C/CA are jointly governed by the carbon-oxygen reaction and diffusion within pores; and the residual stress exerts a role to different extent.
关键词	Carbon fiber reinforced carbon aerogel composites Oxidation Heat treatment Oxidation behavior Thermal insulator
资助者	National Natural Science Foundations of China ; Research Fund of Youth Innovation Promotion Association of CAS, China ; directional institutionalized scientific research platform relies on China Spallation Neutron Source of Chinese Academy of Sciences ; National Key R&D Program of China ; IMR Innovation Fund ; Natural Science Foundation of Liaoning Province
DOI	10.1016/j.carbon.2023.118008
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundations of China[52022101] ; National Natural Science Foundations of China[U20A20242] ; National Natural Science Foundations of China[52188101] ; National Natural Science Foundations of China[52272075] ; Research Fund of Youth Innovation Promotion Association of CAS, China[2021190] ; directional institutionalized scientific research platform relies on China Spallation Neutron Source of Chinese Academy of Sciences ; National Key R&D Program of China[2021YFA1500804] ; IMR Innovation Fund[E255A901] ; Natural Science Foundation of Liaoning Province[2021-MS-021] ; Natural Science Foundation of Liaoning Province[2022-MS-003]
WOS研究方向	Chemistry ; Materials Science
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary
WOS记录号	WOS:000984661800001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/177505
专题	中国科学院金属研究所
通讯作者	Tang, Sufang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Weiwei,Hu, Chenglong,Li, Jian,et al. Insight into the origin of oxidation behaviors of carbon fiber reinforced carbon aerogel composites with different porous skeletons[J]. CARBON,2023,209:13.
APA	Zhang, Weiwei.,Hu, Chenglong.,Li, Jian.,Zhao, Rida.,Pang, Shengyang.,...&Tang, Sufang.(2023).Insight into the origin of oxidation behaviors of carbon fiber reinforced carbon aerogel composites with different porous skeletons.CARBON,209,13.
MLA	Zhang, Weiwei,et al."Insight into the origin of oxidation behaviors of carbon fiber reinforced carbon aerogel composites with different porous skeletons".CARBON 209(2023):13.