Konjac glucomannan-based aerogels with excellent thermal stability and flame retardancy for thermal insulation application
Copyright © 2023 Elsevier B.V. All rights reserved..
Biomass aerogels are a promising kind of environment-friendly thermal insulation material. However, the flammability, poor water resistance, and thermal instability of biomass aerogels limit their applications. Herein, freeze-drying and thermal imidization were used to create konjac glucomannan (KGM), boron nitride (BN), and polyimide (PI)-based aerogels with a semi-interpenetrating network structure. The introduction of BN was beneficial to improve the mechanical properties and thermal stability of aerogels. The imidization process of PI improved the hydrophobicity, mechanical property, and flame retardancy of the aerogels. The synergistic effect of PI and BN reduced the peak heat release rate and total heat release rate of KGM-based aerogel by 55.8 % and 35 %, respectively, and endowed aerogel with good self-extinguishing performance. Moreover, the results of thermal conductivity and infrared thermal imaging demonstrated that the aerogels had excellent thermal insulation properties, and could effectively manage thermal energy over a wide range of temperatures. This study provides a simple method for the preparation of heat-insulating aerogel with high fire safety, which has broad application prospects in the field of energy saving and emission reduction.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2024 |
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| Erschienen: |
2024 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:254 |
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| Enthalten in: |
International journal of biological macromolecules - 254(2024), Pt 1 vom: 21. Jan., Seite 127814 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Deng, Pengpeng [VerfasserIn] |
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| Links: |
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| Themen: |
(1-6)-alpha-glucomannan |
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| Anmerkungen: |
Date Completed 28.12.2023 Date Revised 30.01.2024 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1016/j.ijbiomac.2023.127814 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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NLM364104643 |
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| 500 | |a Date Revised 30.01.2024 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Copyright © 2023 Elsevier B.V. All rights reserved. | ||
| 520 | |a Biomass aerogels are a promising kind of environment-friendly thermal insulation material. However, the flammability, poor water resistance, and thermal instability of biomass aerogels limit their applications. Herein, freeze-drying and thermal imidization were used to create konjac glucomannan (KGM), boron nitride (BN), and polyimide (PI)-based aerogels with a semi-interpenetrating network structure. The introduction of BN was beneficial to improve the mechanical properties and thermal stability of aerogels. The imidization process of PI improved the hydrophobicity, mechanical property, and flame retardancy of the aerogels. The synergistic effect of PI and BN reduced the peak heat release rate and total heat release rate of KGM-based aerogel by 55.8 % and 35 %, respectively, and endowed aerogel with good self-extinguishing performance. Moreover, the results of thermal conductivity and infrared thermal imaging demonstrated that the aerogels had excellent thermal insulation properties, and could effectively manage thermal energy over a wide range of temperatures. This study provides a simple method for the preparation of heat-insulating aerogel with high fire safety, which has broad application prospects in the field of energy saving and emission reduction | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Aerogels | |
| 650 | 4 | |a Flame retardancy | |
| 650 | 4 | |a Konjac glucomannan | |
| 650 | 4 | |a Polyimide | |
| 650 | 4 | |a Thermal insulation | |
| 650 | 7 | |a (1-6)-alpha-glucomannan |2 NLM | |
| 650 | 7 | |a 36W3E5TAMG |2 NLM | |
| 650 | 7 | |a Mannans |2 NLM | |
| 700 | 1 | |a Liu, Xinping |e verfasserin |4 aut | |
| 700 | 1 | |a Li, Yan |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Yue-Fei |e verfasserin |4 aut | |
| 700 | 1 | |a Wu, Kao |e verfasserin |4 aut | |
| 700 | 1 | |a Jiang, Fatang |e verfasserin |4 aut | |
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