Aerogel compound material, flexible structure and application of aerogel compound material in field of climate adjustment

A composite material and aerogel technology, applied in the aerospace field, can solve problems such as high brittleness, low strength, and particle shedding

CN108706955AInactive Publication Date: 2018-10-26李群华
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2018-10-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an aerogel compound material, and belongs to the technical field of aerospace. The material is prepared by the following steps: preparing mixed sol from Al2O3 sol and SiO2 sol, compounding the mixed sol with a fiber supporting material, and preparing the Al2O3-SiO2 aerogel compound material. In the technical scheme, the Al2O3-SiO2 aerogel compound material has the advantages of high temperature resistance and light weight of aerogel and the advantages of good flexibility of graphene fibers, and can be repeatedly bent for use. The invention further relates to a flexiblestructure containing the aerogel compound structure, which can be extended into a corresponding size according to requirement to meet the requirement of corresponding scientific research and experiments. The invention also relates to application of the aerogel compound material and the flexible structure in the field of climate adjustment, the perpendicular incidence of sunlight on the ground surface can be reduced by blocking and reflecting the sunlight through the extended aerogel, and the aim of improving climate can be achieved.
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Description

technical field

[0001] The invention relates to an airgel composite material and an extensible structure containing the airgel composite material. The invention also relates to an application of the airgel composite material in the field of climate regulation, which belongs to the field of aerospace technology. Background technique

[0002] Airgel is a new material with excellent heat insulation effect. It has the characteristics of light weight, low thermal conductivity, high specific area, and high porosity. It can replace traditional heat insulation materials and has been widely used in the aerospace field. Airgel is a product obtained by drying the solvent in the gel while maintaining the integrity of the gel skeleton structure. It is an amorphous low-density material with a nanoporous structure. Silica airgel, also known as "blue smoke" and "solid smoke", is the lightest solid material known so far, and it is also the material with the best thermal insulation performanc...

Examples

Embodiment Construction

[0027] The embodiment of the present invention firstly provides an airgel composite material, through Al 2 o 3 Sol and SiO 2 The sol is made into a mixed sol, and the mixed sol and the fiber support material are combined to make a composite material, and the Al 2 o 3 -SiO 2 Airgel composites. Concrete preparation steps are as follows:

[0028] (1) The mixed sol is mixed with aluminum chloride, deionized water and ethanol, added propylene oxide, stirred for 15min to 25min and left to stand, the formed gel is added to the ethanol solution for aging treatment, and then the gel and ethanol The solution is supercritically dried to obtain stable Al 2 o 3 Sol;

[0029] (2) Then mix ethyl orthosilicate, deionized water, and ethanol, stir in a water bath at 42°C to 46°C, add hydrochloric acid, and obtain SiO 2 sol, combine it with Al 2 o 3 Mix the sol, add propylene oxide, stir evenly and let it stand still. After the gel is formed, add it to the ethanol solution for aging t...