耐高温Al_(2)O_(3)气凝胶隔热材料的研究进展

Research progress on high temperature resistant Al_(2)O_(3) aerogel insulation materials

Al_(2)O_(3)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Al_(2)O_(3)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。

Al_(2)O_(3) 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 Al_(2)O_(3) 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.