Rapid preparation method for aerogel material

An aerogel and gel method technology, which is applied in the field of rapid preparation of aerogel materials, can solve the problems of low specific surface area, large shrinkage, and multi-media solvent of aerogel, so as to shorten the preparation period and save consumption. Effect
CN105536655AActive Publication Date: 2016-05-04YANTAI ZHONGKE RES INST OF ADVANCED MATERIALS & GREEN CHEM ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YANTAI ZHONGKE RES INST OF ADVANCED MATERIALS & GREEN CHEM ENG
Publication Date
2016-05-04

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Abstract

The invention discloses a rapid preparation method for an aerogel material. The preparation method is a combination of a sol-gel method and a supercritical drying process. According to the invention, wet gel is formed through the sol-gel method at first and is directly put into a container for sealing without ageing; then the sealed container is put into a supercritical drying device and a supercritical medium solvent is added; and the supercritical drying process is carried out so as to prepare the aerogel material. Compared with the prior art, the preparation method provided by the invention has the following advantages: the ageing procedure in general aerogel preparation is eliminated, so the preparation period for the aerogel material is greatly shortened; and the wet gel does not need to soak in the medium solvent, so the consumption of the medium solvent in preparation is reduced. The aerogel prepared by using the method has an intact skeleton structure and a non-shrink volume.
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Description

technical field

[0001] The invention relates to a rapid preparation method of an airgel material. The method adopts a sol-gel method combined with a supercritical drying process to rapidly prepare the airgel. Background technique

[0002] Airgel is a solid amorphous material with a nanoporous network structure formed by the aggregation of colloidal particles. It has an extremely low density and is known as "solid smoke". Airgel also has high porosity, high specific surface area, low thermal conductivity, low dielectric coefficient, low refractive index, low elastic modulus, low acoustic impedance, strong adsorption, etc., and its performance can be continuous with the control of the structure. Adjustability. The excellent performance of airgel makes it have very broad application prospects in the fields of thermal insulation, catalysis, energy conservation and environmental protection, petrochemical industry, and aerospace.

[0003] Although the research on aerogels has be...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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