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Preparation method of graphene-zirconia fiber composite aerogel
The invention relates to a preparation method of a composite aerogel, and concretely relates to a preparation method of a graphene-zirconia fiber composite aerogel. The purpose of the invention is to solve the problems of weak chemical bond action among layers of graphene, poor mechanical performances of graphene aerogel due to porous structure of the inside of the graphene aerogel, and poor thermal stability of graphene oxide. The method comprises the following steps: 1, preparing a graphene oxide-zirconia fiber dispersion liquid; 2, reducing the graphene oxide; and 3, flushing the above obtained reduced sample by deionized water, immersing and preserving the flushed sample in ammonia water, and carrying out freeze drying or supercritical drying to obtain the graphene-zirconia fiber composite aerogel. Zirconia fibers are introduced in the invention, so the strength is improved; and graphene oxide is reduced under mild conditions by using a new reducing agent through a hydrothermal technology. The invention belongs to the field of preparation of aerogel.
Preparation method of graphene-zirconia fiber composite aerogel
The invention relates to a preparation method of a composite aerogel, and concretely relates to a preparation method of a graphene-zirconia fiber composite aerogel. The purpose of the invention is to solve the problems of weak chemical bond action among layers of graphene, poor mechanical performances of graphene aerogel due to porous structure of the inside of the graphene aerogel, and poor thermal stability of graphene oxide. The method comprises the following steps: 1, preparing a graphene oxide-zirconia fiber dispersion liquid; 2, reducing the graphene oxide; and 3, flushing the above obtained reduced sample by deionized water, immersing and preserving the flushed sample in ammonia water, and carrying out freeze drying or supercritical drying to obtain the graphene-zirconia fiber composite aerogel. Zirconia fibers are introduced in the invention, so the strength is improved; and graphene oxide is reduced under mild conditions by using a new reducing agent through a hydrothermal technology. The invention belongs to the field of preparation of aerogel.
Preparation method of graphene-zirconia fiber composite aerogel
JIN KUNFENG (author) / ZHANG XINGHONG (author) / ZHAO GUANGDONG (author) / CHEN GUIQING (author) / HAN WENBO (author) / HONG CHANGQING (author) / AN JIADONG (author)
2015-12-09
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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