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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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/13/4888 |
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| author | Rui Gao Zhangjian Zhou Hongbo Zhang Xiaoge Zhang Yuming Wu |
| author_facet | Rui Gao Zhangjian Zhou Hongbo Zhang Xiaoge Zhang Yuming Wu |
| author_sort | Rui Gao |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-11T01:35:31Z |
| format | Article |
| id | doaj.art-c375236067c94680bbd30623ab6ad708 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T01:35:31Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-c375236067c94680bbd30623ab6ad7082023-11-18T17:01:18ZengMDPI AGMaterials1996-19442023-07-011613488810.3390/ma16134888The Evolution of Insulation Performance of Fiber-Reinforced Silica Aerogel after High-Temperature TreatmentRui Gao0Zhangjian Zhou1Hongbo Zhang2Xiaoge Zhang3Yuming Wu4School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaSchool of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaZhongfa Innovation (Beijing) Energy Conservation Technology Co., Ltd., Beijing 100086, ChinaZhongfa Innovation (Beijing) Energy Conservation Technology Co., Ltd., Beijing 100086, ChinaFiber-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.https://www.mdpi.com/1996-1944/16/13/4888fiber-reinforced silica aerogelglass woolheat treatmentthermal conductivity |
| spellingShingle | Rui Gao Zhangjian Zhou Hongbo Zhang Xiaoge Zhang Yuming Wu The Evolution of Insulation Performance of Fiber-Reinforced Silica Aerogel after High-Temperature Treatment Materials fiber-reinforced silica aerogel glass wool heat treatment thermal conductivity |
| 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 | fiber-reinforced silica aerogel glass wool heat treatment thermal conductivity |
| url | https://www.mdpi.com/1996-1944/16/13/4888 |
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