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The Evolution of Insulation Performance of Fiber-Reinforced Silica Aerogel after High-Temperature Treatment

Fiber-reinforced silica aerogel blankets (FRABs) are an important high-temperature thermal insulation material for industry applications that have emerged in recent years. In order to better understand the performance evolution of FRABs at high temperatures, the effect of heat treatment at different...

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Autores principales: Gao, Rui, Zhou, Zhangjian, Zhang, Hongbo, Zhang, Xiaoge, Wu, Yuming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10343770/
https://www.ncbi.nlm.nih.gov/pubmed/37445201
http://dx.doi.org/10.3390/ma16134888
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author Gao, Rui
Zhou, Zhangjian
Zhang, Hongbo
Zhang, Xiaoge
Wu, Yuming
author_facet Gao, Rui
Zhou, Zhangjian
Zhang, Hongbo
Zhang, Xiaoge
Wu, Yuming
author_sort Gao, Rui
collection PubMed
description Fiber-reinforced silica aerogel blankets (FRABs) are an important high-temperature thermal insulation material for industry applications that have emerged in recent years. In order to better understand the performance evolution of FRABs at high temperatures, the effect of heat treatment at different temperatures on the performance of FRABs as well as their base material, hydrophobic silica aerogel powder and glass wool, was investigated. The property evolution of the hydrophobic silica aerogel powder showed two stages with an increase in thermal treatment temperatures. The skeleton structure of the aerogel remained unchanged, but the residual organic chemicals, such as hydrophobic groups, were decomposed when the heat treatment temperature was lower than 400 °C. Above 400 °C, the skeleton began to shrink with the increase in temperature, which led to an increase in thermal conductivity. The structure and room-temperature thermal conductivity of the glass wool blanket were less affected by a heat treatment temperature under 600 °C. Therefore, the performance degradation of FRABs at high temperatures is mainly due to the change in the aerogel powder. The insulation performance of the glass wool and FRAB at high temperatures was studied using a heating table which was designed to simulate working conditions. The energy savings of using FRABs instead of glass fiber were calculated and are discussed here.
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spelling pubmed-103437702023-07-14 The Evolution of Insulation Performance of Fiber-Reinforced Silica Aerogel after High-Temperature Treatment Gao, Rui Zhou, Zhangjian Zhang, Hongbo Zhang, Xiaoge Wu, Yuming Materials (Basel) Article Fiber-reinforced silica aerogel blankets (FRABs) are an important high-temperature thermal insulation material for industry applications that have emerged in recent years. In order to better understand the performance evolution of FRABs at high temperatures, the effect of heat treatment at different temperatures on the performance of FRABs as well as their base material, hydrophobic silica aerogel powder and glass wool, was investigated. The property evolution of the hydrophobic silica aerogel powder showed two stages with an increase in thermal treatment temperatures. The skeleton structure of the aerogel remained unchanged, but the residual organic chemicals, such as hydrophobic groups, were decomposed when the heat treatment temperature was lower than 400 °C. Above 400 °C, the skeleton began to shrink with the increase in temperature, which led to an increase in thermal conductivity. The structure and room-temperature thermal conductivity of the glass wool blanket were less affected by a heat treatment temperature under 600 °C. Therefore, the performance degradation of FRABs at high temperatures is mainly due to the change in the aerogel powder. The insulation performance of the glass wool and FRAB at high temperatures was studied using a heating table which was designed to simulate working conditions. The energy savings of using FRABs instead of glass fiber were calculated and are discussed here. MDPI 2023-07-07 /pmc/articles/PMC10343770/ /pubmed/37445201 http://dx.doi.org/10.3390/ma16134888 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Gao, Rui
Zhou, Zhangjian
Zhang, Hongbo
Zhang, Xiaoge
Wu, Yuming
The Evolution of Insulation Performance of Fiber-Reinforced Silica Aerogel after High-Temperature Treatment
title The Evolution of Insulation Performance of Fiber-Reinforced Silica Aerogel after High-Temperature Treatment
title_full The Evolution of Insulation Performance of Fiber-Reinforced Silica Aerogel after High-Temperature Treatment
title_fullStr The Evolution of Insulation Performance of Fiber-Reinforced Silica Aerogel after High-Temperature Treatment
title_full_unstemmed The Evolution of Insulation Performance of Fiber-Reinforced Silica Aerogel after High-Temperature Treatment
title_short The Evolution of Insulation Performance of Fiber-Reinforced Silica Aerogel after High-Temperature Treatment
title_sort evolution of insulation performance of fiber-reinforced silica aerogel after high-temperature treatment
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10343770/
https://www.ncbi.nlm.nih.gov/pubmed/37445201
http://dx.doi.org/10.3390/ma16134888
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