Abstract
Al2O3 fiber has high temperature resistance, chemical corrosion resistance, and low density. It is a good thermal insulation material. Reed is one of the most widely distributed angiosperms. The short cilia of the reed have a hollow structure, which can improve the thermal insulation performance of the fiber. Using reed fibers as a biological template, Al2O3 fibers with a hollow structure were prepared. After the reed fibers were immersed in the precursor solution, they were dried and sintered at a high temperature to obtain Al2O3 hollow fibers. The fibers replicated the hollow structure and the excellent continuity of the reed fibers.
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