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Nonflammable aerogel and preparation method and application thereof

A kind of gas-resistant and gel technology, which is applied in the field of materials, can solve the problems that cannot meet the requirements of flame retardancy, and achieve the effect of high strength, low thermal conductivity and high flame retardancy

Inactive Publication Date: 2019-04-02
XIHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

U.S. Patent US20070208124 dissolves and disperses polymer, clay and binder in a solvent, and then prepares a composite airgel material by freeze-drying. However, due to the high material ratio of polymer and binder, this The design cannot meet the higher flame retardant requirements

Method used

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  • Nonflammable aerogel and preparation method and application thereof
  • Nonflammable aerogel and preparation method and application thereof
  • Nonflammable aerogel and preparation method and application thereof

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preparation example Construction

[0041] The preparation method of the gas-resistant gel provided by the invention comprises the following steps:

[0042] (1) Disperse natural macromolecules, nitrogen-rich molecules, phosphorus-rich molecules, and cross-linking agents in 100 parts of solvent according to the required parts by mass;

[0043] The natural macromolecules described above for the gas-resistant gel include at least one of cellulose and chitin; preferably cellulose; the nitrogen-rich molecules include urea, urea-formaldehyde resin, dicyandiamide, polypropylene amine, polypropylene amine hydrochloride, polyethyleneimine, branched polyethyleneimine, tetraethylenepentamine, melamine, melamine-formaldehyde resin; preferably, the nitrogen-rich molecule is polyallylamine, polyallylamine hydrochloride At least one of salt, polyallylamine hydrochloride, branched polyethyleneimine, urea-formaldehyde resin, melamine-formaldehyde resin; phosphorus-rich molecules include phosphoric acid, phosphate, polyphosphoric...

Embodiment

[0051] Please refer to Table 1 and Table 2 for details.

[0052] Table 1. Recipe table

[0053]

[0054]

[0055] Table 2. Performance parameter table

[0056]

[0057]

[0058] Listed in Table 1 and Table 2 are thermal conductivity, sound absorption coefficient and CO2 adsorption capacity respectively. It can be seen from these three parameters that the airgel of the present invention can be applied in the fields of building heat preservation, sound absorption and carbon dioxide capture.

[0059] The invention uses natural polymers as raw materials, which are greener and cheaper; the three sources of expansion and flame retardancy are used as the design idea, so that the materials can form a heat-insulating carbon layer when encountering a fire, which is convenient for property protection and fire attenuation.

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Abstract

The invention provides nonflammable aerogel and a preparation method and application thereof. The aerogel comprises the following raw materials: in parts by mass, 0.1-20 parts of natural macromolecules, 0.05-10 parts of nitrogen-rich molecules, 0.005-5 parts of phosphorus-rich molecules, 0.1-10 parts of clay particles, 0.5-20 parts of a crosslinking agent and 0-0.4 part of a surface modifier. Thenonflammable aerogel prepared by using the method has the advantages of high flame retardancy, low thermal conductivity, low density, high strength and the like, and can be applied to the fields of building insulation, sound absorption and carbon dioxide capture.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a gas-resistant gel and its preparation method and application. Background technique [0002] Energy is the driving force of social and economic development. However, too fast and too much energy consumption has led to many major problems such as international energy disputes, urban pollution and climate change, making energy saving an important issue in the process of using energy. [0003] Statistics show that 30-40% of the world's energy consumption is in buildings, especially in regulating indoor temperature. The energy consumption per unit area of ​​buildings in China is 3 to 5 times that of developed countries with similar climates, and more than 80% of existing buildings are high energy consumption buildings. [0004] At present, building insulation materials are widely used to solve the problem of building insulation and energy saving. These insulation materials incl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/28C08J9/36C08L1/02C08L61/28C08L5/08C08K3/22C08K7/26C08K3/34C08K5/3492C08K5/21C08K3/32
CPCC08J9/28C08J9/36C08J2205/026C08J2301/02C08J2305/08C08J2361/28C08J2401/02C08K3/22C08K3/32C08K3/34C08K3/346C08K5/21C08K5/34922C08K7/26
Inventor 廖望廖敏惠陈岚王广玉
Owner XIHUA UNIV
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