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Preparation of a carbon fibre-reinforced carbon aerogel and its application as a high-temperature thermal insulator

Carbon aerogels (CAs) have attracted attention in thermal insulation. However, the traditional sol–gel method for preparing them involves time-consuming solvent exchange and rigorous supercritical drying processes, and the obtained CAs are brittle and crumble easily. To address these problems, a car...

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Autores principales: Zhang, Haiming, Feng, Junzong, Li, Liangjun, Jiang, Yonggang, Feng, Jian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9082426/
https://www.ncbi.nlm.nih.gov/pubmed/35541432
http://dx.doi.org/10.1039/d2ra00276k
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author Zhang, Haiming
Feng, Junzong
Li, Liangjun
Jiang, Yonggang
Feng, Jian
author_facet Zhang, Haiming
Feng, Junzong
Li, Liangjun
Jiang, Yonggang
Feng, Jian
author_sort Zhang, Haiming
collection PubMed
description Carbon aerogels (CAs) have attracted attention in thermal insulation. However, the traditional sol–gel method for preparing them involves time-consuming solvent exchange and rigorous supercritical drying processes, and the obtained CAs are brittle and crumble easily. To address these problems, a carbon fibre-reinforced carbon aerogel (CF/CA) was prepared via combining a resorcinol–furfural (RF) gel containing a salt (ZnCl(2)) with polyacrylonitrile (PAN) fiber felt. The CF/CA not only has low thermal conductivity (0.6904 W m(−1) K(−1)) even at an ultra-high temperature of 1800 °C in an argon atmosphere but also exhibits relatively high compressive strength (6.10 MPa, 10% ε) and a low density of 0.68 g cm(−3). The CF/CAs can be used as ultrahigh-temperature thermal insulators (under inert atmospheres or vacuum) in thermal protection systems such as space vehicles or industrial high temperature furnaces. Our novel strategy may lead to lower-cost and large scale industrial processes of CF/CAs.
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spelling pubmed-90824262022-05-09 Preparation of a carbon fibre-reinforced carbon aerogel and its application as a high-temperature thermal insulator Zhang, Haiming Feng, Junzong Li, Liangjun Jiang, Yonggang Feng, Jian RSC Adv Chemistry Carbon aerogels (CAs) have attracted attention in thermal insulation. However, the traditional sol–gel method for preparing them involves time-consuming solvent exchange and rigorous supercritical drying processes, and the obtained CAs are brittle and crumble easily. To address these problems, a carbon fibre-reinforced carbon aerogel (CF/CA) was prepared via combining a resorcinol–furfural (RF) gel containing a salt (ZnCl(2)) with polyacrylonitrile (PAN) fiber felt. The CF/CA not only has low thermal conductivity (0.6904 W m(−1) K(−1)) even at an ultra-high temperature of 1800 °C in an argon atmosphere but also exhibits relatively high compressive strength (6.10 MPa, 10% ε) and a low density of 0.68 g cm(−3). The CF/CAs can be used as ultrahigh-temperature thermal insulators (under inert atmospheres or vacuum) in thermal protection systems such as space vehicles or industrial high temperature furnaces. Our novel strategy may lead to lower-cost and large scale industrial processes of CF/CAs. The Royal Society of Chemistry 2022-05-09 /pmc/articles/PMC9082426/ /pubmed/35541432 http://dx.doi.org/10.1039/d2ra00276k Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Zhang, Haiming
Feng, Junzong
Li, Liangjun
Jiang, Yonggang
Feng, Jian
Preparation of a carbon fibre-reinforced carbon aerogel and its application as a high-temperature thermal insulator
title Preparation of a carbon fibre-reinforced carbon aerogel and its application as a high-temperature thermal insulator
title_full Preparation of a carbon fibre-reinforced carbon aerogel and its application as a high-temperature thermal insulator
title_fullStr Preparation of a carbon fibre-reinforced carbon aerogel and its application as a high-temperature thermal insulator
title_full_unstemmed Preparation of a carbon fibre-reinforced carbon aerogel and its application as a high-temperature thermal insulator
title_short Preparation of a carbon fibre-reinforced carbon aerogel and its application as a high-temperature thermal insulator
title_sort preparation of a carbon fibre-reinforced carbon aerogel and its application as a high-temperature thermal insulator
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9082426/
https://www.ncbi.nlm.nih.gov/pubmed/35541432
http://dx.doi.org/10.1039/d2ra00276k
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