Method for preparing aerogel through solvent plasticizing and foaming

An aerogel, to-be-foamed technology, used in aerogel preparation, chemical instruments and methods, molybdenum sulfide, etc., can solve the problems of unfavorable industrial application, unstable structure, and high energy consumption

Inactive Publication Date: 2020-07-10
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are many types of airgel, mainly focusing on carbon materials, inorganic materials, metal materials, etc. that cannot be realized by thermoplastic foaming technology, but the current preparation te

Method used

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  • Method for preparing aerogel through solvent plasticizing and foaming
  • Method for preparing aerogel through solvent plasticizing and foaming
  • Method for preparing aerogel through solvent plasticizing and foaming

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1

[0023] The aqueous suspension of 5mg / ml Mxenes was uniformly mixed with sodium bicarbonate (the mass ratio of Mxenes and sodium bicarbonate was 1:1), dried to form a film, and then placed in 10% hydrochloric acid to generate bubbles, which was obtained after 1 min. Porous Mxenes aerogel materials such as figure 1 , with a wall thickness of 195 nm, an average pore size of 100 μm, and a density of 11 mg / cm 3 .

Example Embodiment

[0024] Example 2

[0025] The aqueous suspension of 5mg / ml molybdenum disulfide and sodium bicarbonate were uniformly mixed (mass ratio 1:1), dried to form a film, and then placed in 10% hydrochloric acid to generate gas foaming. After 5 minutes, the obtained Porous molybdenum disulfide aerogel materials such as figure 2 , with a wall thickness of 105 nm, an average pore size of 87 μm and a density of 15 mg / cm 3 .

Example Embodiment

[0026] Example 3

[0027] The 11 mg / ml aqueous suspension of bacterial cellulose was uniformly mixed with sodium carbonate (mass ratio of 1:5), dried to form a film, and then placed in 15% hydrochloric acid to generate gas foaming, and a porous structure was obtained after 1 min. cellulose aerogel materials such as image 3 , with a wall thickness of 360 nm, an average pore size of 230 μm and a density of 35 mg / cm 3 .

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Abstract

The invention provides a method for preparing aerogel based on solvent plasticizing and foaming for the first time. An aerogel material is prepared through solvent plasticizing and in-situ bubble generation, the problem that a thermoplastic foaming process is difficult to realize for a non-polymer is solved, and the method has wide application universality. Besides, the scheme can select more foaming systems, is easy to implement, and does not need to utilize a special drying process, thereby greatly promoting the industrial development of the porous aerogel.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a method for preparing airgel by plasticizing and foaming with a solvent. Background technique [0002] Thermoplastic foam materials are widely used in daily life due to their excellent properties such as ultra-light, thermal insulation, and fatigue resistance, such as shock absorption and damping, heat insulation, packaging, sports protection, etc. The molecular chains of the polymer are disentangled to realize the infiltration of the gas, and the cells generated by the gas are fixed in the interior of the polymer through low-temperature setting to obtain a thermoplastic foam. However, the current thermoplastic foaming process is only suitable for polymer materials that can be plasticized at lower temperatures, such as polyurethane, polypropylene, etc., and for carbon materials, inorganic materials, metal materials, etc., due to their extremely high plas...

Claims

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Application Information

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IPC IPC(8): C01B32/194C01G39/06B01J13/00C08J9/08C08L1/02B22F3/11C01B32/198
CPCB01J13/0091B22F3/1125C01B2204/20C01G39/06C01P2006/10C01P2006/16C08J9/08C08J2203/02C08J2205/026C08J2301/02C01B32/194C01B32/198
Inventor 许震高超庞凯
Owner ZHEJIANG UNIV
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