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4D intelligent aerogel and preparation method thereof

An airgel and intelligent technology, applied in the field of intelligent material preparation and application, can solve the problems of poor performance controllability and complicated preparation process, and achieve the effect of low cost, simple process and low density

Active Publication Date: 2019-02-01
HAINAN UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At first, researchers used sol-gel method, template-guided method, self-assembly method, 3D printing and other methods to prepare aerogels, but there were technical problems of complex preparation process and poor performance controllability.

Method used

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  • 4D intelligent aerogel and preparation method thereof
  • 4D intelligent aerogel and preparation method thereof
  • 4D intelligent aerogel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034]Weigh 8.0g of polyvinyl alcohol, add it to 100.0ml of deionized water at room temperature and stir at a stirring speed of 300.0rad / min for 3.0h. After the polyvinyl alcohol is fully swollen, slowly heat it to 98.0°C Then start timing, keep stirring at a constant temperature of 98.0°C, the stirring speed is 300.0rad / min, and the stirring time is 4.0h, until the polyvinyl alcohol is fully dissolved, the solution is uniform, clear, transparent and free of particles, and then cooled naturally to room temperature to obtain dispersion Uniform clear and transparent polyvinyl alcohol solution. At room temperature, the pH value of the above polyvinyl alcohol solution system was adjusted to 3.5 with acetic acid, and then the stirring was continued at a stirring speed of 300.0 rad / min and a stirring time of 1.0 h. Then add 4.0ml of glutaraldehyde to the above solution and continue to stir and disperse. The stirring speed is 300.0rad / min, and the stirring time is 5.0h to obtain the ...

Embodiment 2

[0036] Weigh 8.0g of polyvinyl alcohol, add it to 100.0ml of deionized water at room temperature and stir at a stirring speed of 300.0rad / min for 3.0h. After the polyvinyl alcohol is fully swollen, slowly heat it to 98.0°C Then start timing, keep stirring at a constant temperature of 98.0°C, the stirring speed is 300.0rad / min, and the stirring time is 4.0h, until the polyvinyl alcohol is fully dissolved, the solution is uniform, clear, transparent and free of particles, and then cooled naturally to room temperature to obtain dispersion Uniform clear and transparent polyvinyl alcohol solution. At room temperature, the pH value of the polyvinyl alcohol solution system was adjusted to 3.0 with hydrochloric acid, and then the stirring was continued at a stirring speed of 300.0 rad / min and a stirring time of 1.0 h. Then add 4.0ml of glutaraldehyde to the above solution and continue to stir and disperse. The stirring speed is 300.0rad / min and the stirring time is 3.0h to obtain the ...

Embodiment 3

[0038] Weigh 6.0g of polyvinyl alcohol, add it into 100.0ml of deionized water at room temperature and stir at a stirring speed of 300.0rad / min for 3.0h. After the polyvinyl alcohol is fully swollen, slowly heat it to 95.0°C Then start timing, keep stirring at a constant temperature of 95.0°C, the stirring speed is 300.0rad / min, and the stirring time is 4.0h, until the polyvinyl alcohol is fully dissolved, the solution is uniform, clear, transparent and free of particles, and then cooled naturally to room temperature to obtain dispersion Uniform clear and transparent polyvinyl alcohol solution. At room temperature, the pH value of the above polyvinyl alcohol solution system was adjusted to 3.5 with acetic acid, and then the stirring was continued at a stirring speed of 300.0 rad / min and a stirring time of 1.0 h. Then add 5.0ml of glutaraldehyde to the above solution and continue to stir and disperse. The stirring speed is 300.0rad / min and the stirring time is 5.0h to obtain th...

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Abstract

The invention relates to a 4D intelligent aerogel and a preparation method thereof. The preparation method is characterized by regulating the shape memory property and regulating the microstructure, the density and the hydrophilicity. The 4D intelligent aerogel is prepared by a one-step crosslinking vacuum freeze-drying process, and the technical problems of complexness and poor controllability ofexisting intelligent aerogel preparation methods are solved. The preparation method has the advantages of simple preparation process, low cost, good controllability, strong universality, and easinessin modification and compounding of a material. The 4D aerogel has the advantages of strong controllability, good structural designability, good density and hydrophilicity controllability and good mechanical properties, can be used in fields of marine development, intelligent drugs, environmental protection, porous electrodes, intelligent adsorption, intelligent artificial enzymes, intelligent sound absorption, new energy development, intelligent protection, building materials, lightweight structural materials, thermal insulation materials, flame retardant materials, shock absorbing materials,reinforced framework materials, energy storage devices and aerospace, ad provides a way for studying multifunctional materials.

Description

technical field [0001] The invention relates to the field of preparation and application of intelligent materials, in particular to a 4D intelligent airgel and a one-step cross-linking vacuum freeze-drying method. Background technique [0002] Material science is an important foundation of the manufacturing industry, and its development reflects the comprehensive strength of the country to a certain extent. Intelligence is the development trend of future science and technology, and the intelligence of materials will surely become one of the most active advanced development directions of materials science. According to Einstein's theory, the concept of time is added to 3D, so time and space are combined to form 4D space. 4D intelligent manufacturing is to directly build the design into the material. The size and shape of the material can change with time, that is, the deformation dimension is added on the basis of 3D, which will become the trend of future technological devel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/28C08L29/04B33Y70/00B33Y10/00
CPCB33Y10/00B33Y70/00C08J9/286C08J2329/04
Inventor 王文欣王宁杜立文
Owner HAINAN UNIVERSITY
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