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Hybridized aerogel material with self-cleaning heat-insulation and wave-absorbing multi-function

A gel material and multi-functional technology, applied in airgel preparation, colloid chemistry, colloid chemistry, etc., can solve problems such as poor thermal insulation performance, and achieve the goal of avoiding the decline of thermal insulation performance, low cost, and excellent infrared stealth function Effect

Inactive Publication Date: 2019-07-23
合肥卓汇新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such aerogels perform poorly in terms of thermal insulation properties

Method used

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  • Hybridized aerogel material with self-cleaning heat-insulation and wave-absorbing multi-function
  • Hybridized aerogel material with self-cleaning heat-insulation and wave-absorbing multi-function

Examples

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Effect test

Embodiment 1

[0018] A self-cleaning, heat-preserving, wave-absorbing multifunctional hybrid airgel material is prepared from the following raw materials in parts by weight: 43 parts of tetraethoxytitanium, 61 parts of absolute ethanol, 39 parts of ethyl orthosilicate, ethoxy 16 parts of trimethylsilane, 43 parts of potassium hydroxide solution, 37 parts of sodium nitrate solution, 23 parts of ferrous sulfate solution, 0.8 parts of reaction catalyst, and 83 parts of purified water.

[0019] A method for preparing a self-cleaning, heat-preserving and wave-absorbing multifunctional hybrid airgel material, the specific steps are as follows: 1. Weigh each raw material, pour potassium hydroxide solution into an aluminum alloy corrosion-resistant reaction kettle and stir, and then add sodium nitrate The solution was added into it, and after fully stirring, the ferrous sulfate solution was slowly added to form a dark green solution, and then ethoxytrimethylsilane and absolute ethanol were added to ...

Embodiment 2

[0026] A self-cleaning, heat-preserving, wave-absorbing multifunctional hybrid airgel material is prepared from the following raw materials in parts by weight: 32 parts of tetraethoxytitanium, 54 parts of absolute ethanol, 31 parts of ethyl orthosilicate, ethoxy 9 parts of trimethylsilane, 34 parts of potassium hydroxide solution, 28 parts of sodium nitrate solution, 16 parts of ferrous sulfate solution, 0.6 parts of reaction catalyst, and 65 to 83 parts of purified water.

[0027] A method for preparing a self-cleaning, heat-preserving and wave-absorbing multifunctional hybrid airgel material, the specific steps are as follows: 1. Weigh each raw material, pour potassium hydroxide solution into an aluminum alloy corrosion-resistant reaction kettle and stir, and then add sodium nitrate The solution was added into it, and after fully stirring, the ferrous sulfate solution was slowly added to form a dark green solution, and then ethoxytrimethylsilane and absolute ethanol were adde...

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Abstract

The invention discloses a hybridized aerogel material with self-cleaning, heat-insulation and wave-absorbing multi-function. The hybridized aerogel material is prepared from the following raw materials: in percentage by weight, tetraethoxy titanium, absolute ethyl alcohol, acetone, nitric acid, ammonium hydroxide, tetraethoxysilane, trimethylethoxysilane, a potassium hydroxide solution, a sodium nitrate solution, a ferrous sulfate solution, N-ethyl morpholine and pure water. The micron-sized roughness of the aerogel honeycomb structure and the nanoscale roughness caused by Fe3O4 particles caneffectively reduce the water-solid contact area, and the material presents the good hydrophobicity, and can achieve self-cleaning effect. Because the aerogel is filled with a great amount of air whilethe solid phase proportion is relatively less, the pyroconductivity is low, heat transmission is remarkably reduced due to random distribution of air vents, therefore the aerogel material has the good heat insulation property, and can achieve the excellent infrared stealth function. The hydrophobicity of the aerogel avoids the situation of decreasing heat insulation property caused by invasion ofmoisture in the environment, so that the material can be applied to the harsh environment, and has the outstanding comprehensive properties of high adsorption and low weight.

Description

technical field [0001] The invention relates to the technical field of airgel materials, in particular to a multifunctional hybrid airgel material with self-cleaning, thermal insulation and wave-absorbing functions. Background technique [0002] Airgel is a highly dispersed solid material in which colloidal particles or polymer molecules aggregate to form a nanoporous network structure, and the pores are filled with a gaseous dispersion medium. It is a liquid component in a wet gel during drying. Three-dimensional porous nanomaterials that are replaced by gases while still maintaining their gel network. The continuous three-dimensional network structure of airgel makes it show unique properties in thermal, mechanical, acoustic, optical, electrical, adsorption, etc., because its microstructure presents a three-dimensional porous morphology, coupled with its specific surface area Large, high porosity, low density, low thermal conductivity, etc., airgel has many advantages in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/00
CPCB01J13/0091
Inventor 郭平
Owner 合肥卓汇新材料科技有限公司
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