Airgel composite material and preparation method thereof

A composite material and aerogel technology, applied in the field of thermal insulation materials, can solve problems such as performance increase, and achieve the effects of high open porosity, improved thermal conductivity, and simple and easy preparation process.

Active Publication Date: 2020-09-29
HAIER SMART HOME CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] Properties of known materials no longer meet increased demands, especially with regard to thermal conductivity and strength

Method used

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  • Airgel composite material and preparation method thereof

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Embodiment Construction

[0036] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific implementation methods of the present application. Apparently, the described implementations are only some of the implementations of this application, not all of them. Based on the implementation manners in this application, all other implementation manners obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0037] The embodiment of the present invention discloses a preparation method of an airgel composite material, comprising the following steps:

[0038] S1. Mix melamine and formaldehyde to obtain a melamine prepolymer; wherein, the molar ratio of melamine to the formaldehyde is 1:2-1:5.

[0039] S2, mixing the melamine prepolymer with a hardener, a foaming ag...

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Abstract

The invention provides a preparation method of an aerogel composite, comprising the steps of mixing melamine and a formaldehyde to obtain a melamine prepolymer; mixing the melamine prepolymer with a hardening agent, a foaming agent and deionized water to obtain a foam liquid; foaming the foam liquid to obtain foam; solidifying and annealing the foam to obtain melamine foam; thermally compressing the prepared melamine foam; combining the thermally compressed melamine foam with an aerogel to obtain the aerogel composite. The invention also provides the aerogel composite prepared via the preparation method. The small particle size characteristic of the aerogel and the porosity characteristic of the melamine are complemented; heat conduction ecoefficiency can be significantly improved, and thefragility defect of the aerogel can be overcome.

Description

technical field [0001] The invention relates to the technical field of thermal insulation materials, and relates to an airgel composite material and a preparation method thereof. Background technique [0002] As a new type of thermal insulation material, airgel is composed of 10% solid and 90% gas, known as the lightest thermal insulation material, and its special structure and heat conduction mechanism, known as a new generation of thermal insulation material. [0003] Aerogels and silica sols are highly porous solids, since the majority of their volume consists of pores. Aerogels can be based, for example, on silicates but also on plastics or carbon. Airgel pores have diameters in the nanometer range. Due to their high pore volume, aerogels are particularly useful as insulating materials combining excellent insulating properties with low density. Aerogels initially exist as particles and can be formed into panels using a binder through a forming process such as by press...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J9/04C08L61/28C08K7/22
Inventor 刘站站李鹏
Owner HAIER SMART HOME CO LTD
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