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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...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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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. |
format | Online Article Text |
id | pubmed-10343770 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
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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