Organic aerogel sheet with surface wrinkles and preparation method thereof

Abstract

The invention discloses a preparation method of an organic aerogel sheet with surface wrinkles. The preparation method specifically comprises the following steps: step 1, uniformly mixing resorcinol, a formaldehyde aqueous solution, sodium carbonate and water; step 2, transferring the mixed solution obtained in the step 1 into a constant-temperature box, and standing for 1-2 days to obtain sol; step 3, washing and soaking the glass mold with hexamethyldisilazane, and drying to obtain a hydrophobic glass mold; 4, pouring the obtained sol into a glass mold, and standing in a constant temperature box; step 5, soaking the obtained wet gel together with the mold in deionized water to obtain expanded and deformed wet gel; step 6, soaking and washing the expanded and deformed wet gel obtained in the step 5 with absolute ethyl alcohol to obtain alcogel; step 7, performing carbon dioxide supercritical drying on the alcogel obtained in the step 6 to obtain an organic aerogel sheet with surface wrinkles; the invention also discloses the organic aerogel sheet with the wrinkled surface, which is prepared by the method.

Description

Organic aerogel sheet with surface wrinkles and preparation method thereof technical field The invention belongs to the technical field of material preparation, be specifically related to a kind of organic aerogel sheet with surface folds, It also relates to a preparation method of an organic aerogel sheet with surface wrinkles. Background technique Introducing some concave and convex folds on the surface of aerogel, for inertial confinement nuclear fusion, low temperature and high pressure state method [0002] It is of great significance for engineering practice applications such as engineering experiments and fluid mechanics instability experiments. Usually processed with a diamond lathe Precision micromachining with femtosecond lasers can create bumps and serrations on the surface of aerogels, however, these machining techniques The cost of the segment is very high, and it takes a long time, which is not convenient for large-scale processing. [0003] Zhang Xitian...

AI Technical Summary

Problems solved by technology

[0011] However, allowing airgel to swell to create wrinkles on the surface has not been reported.

How to prepare organic airgel sheets with surface folds by facile means is still a challenge

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