Research progress on high temperature resistant Al2O3 aerogel insulation materials

doi:10.3969/j.issn.1001-1935.2022.03.022

Abstract

Abstract:

Al₂O₃ aerogel has great application potential in the field of high temperature insulation due to its light weight,high temperature resistance and good stability.The preparation process and the mechanism of Al₂O₃ aerogel by sol-gel method in recent years were expounded;a variety of drying methods were introduced;the modification processes in hydrophobicity,enhancement and high temperature resistance were summarized;and the future development direction was prospected.

Key words: alumina aerogel, high temperature resistance, thermal insulation materials, sol-gel method, research progress

摘要：

Al₂O₃气凝胶因轻质、耐高温、稳定性好的特性,在高温隔热领域具有极大的应用潜力。阐述了近年来Al₂O₃气凝胶的溶胶-凝胶法制备过程及机制,介绍了多种干燥工艺方法,总结了在疏水、增强和耐高温性能方面的改性工艺,展望了其未来的发展方向。

关键词: Al₂O₃气凝胶, 耐高温, 隔热材料, 溶胶-凝胶法, 研究进展

CLC Number:

TB35

Tong Tianbai, Ren He, Wang Hengzhi, Liu Mei, Fan Zhaodong. Research progress on high temperature resistant Al₂O₃ aerogel insulation materials[J]. Refractories, 2022, 56(3): 272-276.

佟天白, 任河, 王恒芝, 刘梅, 范召东. 耐高温Al₂O₃气凝胶隔热材料的研究进展[J]. 耐火材料, 2022, 56(3): 272-276.

Figures/Tables 2

References 38

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前驱体	主要成果	参考文献
异丙醇铝	室温下Al₂O₃气凝胶比表面积达377 m²·g^-1	[26]
AlCl₃·6H₂O	掺杂聚乙烯醇可有效降低因干燥带来的凝胶收缩	[27]
仲丁醇铝	Al₂O₃气凝胶800 ℃时比表面积达301 m²·g^-1,400 ℃时热导率为0.065 W·m^-1·K^-1	[12]
仲丁醇铝	Al₂O₃气凝胶室温和1 200 ℃下比表面积分别达447和73 m²·g^-1	[20]
仲丁醇铝	Al₂O₃气凝胶在30、400、800 ℃下热导率分别为0.029、0.098、0.295 W·m^-1·K^-1	[11]
仲丁醇铝	利用六甲基二硅胺烷超临界修饰制备Al₂O₃气凝胶,在1 200 ℃下比表面积达280 m²·g^-1	[10]

前驱体	主要成果	参考文献
异丙醇铝	室温下Al₂O₃气凝胶比表面积达377 m²·g^-1	[26]
AlCl₃·6H₂O	掺杂聚乙烯醇可有效降低因干燥带来的凝胶收缩	[27]
仲丁醇铝	Al₂O₃气凝胶800 ℃时比表面积达301 m²·g^-1,400 ℃时热导率为0.065 W·m^-1·K^-1	[12]
仲丁醇铝	Al₂O₃气凝胶室温和1 200 ℃下比表面积分别达447和73 m²·g^-1	[20]
仲丁醇铝	Al₂O₃气凝胶在30、400、800 ℃下热导率分别为0.029、0.098、0.295 W·m^-1·K^-1	[11]
仲丁醇铝	利用六甲基二硅胺烷超临界修饰制备Al₂O₃气凝胶,在1 200 ℃下比表面积达280 m²·g^-1	[10]

Research progress on high temperature resistant Al₂O₃ aerogel insulation materials

耐高温Al₂O₃气凝胶隔热材料的研究进展

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References 38

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