The aerogel thin film preparation process by sol-gel method is summarized,and various film forming processes are introduced,such as spin coating,impregnation drawing,spraying and casting.According to relevant research reports in the world,the breakthrough progress in preparation and application of various aerogel thin film in recent years is reviewed.It is also pointed out that the basic research system for functionalization of aerogel film materials is not perfect,and it is urgent to find a low-cost and convenient production process for large-scale practical application.
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