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Preparation method of anti-buffering silicon dioxide aerogel heat insulation sheet

A technology of silicon dioxide and heat insulation sheet, which is applied in the direction of chemical instruments and methods, electrical components, secondary batteries, etc., can solve the problems of powder dropping and heat insulation performance, and achieve high-efficiency packaging efficiency

Inactive Publication Date: 2021-11-16
GONG YI VAN-RES INNOVATION COMPOSITE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the current application of airgel felt and the process of functional components, due to the cutting process and the process of compounding with functional structures, the phenomenon of powder dropping and the reduction of heat insulation performance, the present invention aims at the current application of airgel as a functional component in the new Problems in the application of energy vehicles, providing a preparation method for anti-buffer silica airgel heat insulation sheet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A preparation method of an anti-buffer silica airgel thermal insulation sheet, characterized in that the steps are as follows:

[0037] (1) Preparation of fiber sheet:

[0038](a) Cut the silicone rubber roll material with a back-shaped knife die to obtain a back-shaped silicone rubber frame of the required size; (b) Put the pre-oxidized silk fiber felt sheet of the corresponding size into the silicone rubber frame to obtain The required pre-oxidized silk fiber sheet, wherein the thickness of the silicone rubber frame is 4, and the thickness of the fiber sheet is 3.5mm;

[0039] (2) Sol impregnation and gelation: Mix the silicon source, ethanol and water evenly, then add a gelling catalyst to make the pH of the solution 7, stir evenly to obtain a catalyzed silica sol, and pre-oxidize the silica sol described in step 1 impregnating the silk fiber sheet and gelling in the catalyzed silica sol to obtain a silica wet gel sheet;

[0040] (3) Gel aging: aging the silica wet...

Embodiment 2

[0051] A preparation method of an anti-buffer silica airgel thermal insulation sheet, characterized in that the steps are as follows:

[0052] (1) Preparation of fiber sheet:

[0053] (a) Cut the silicone rubber roll material with a back-shaped knife die to obtain a back-shaped silicone rubber frame of the required size; (b) Put the glass fiber mat sheet of the corresponding size into the silicone rubber frame to obtain the required size The glass fiber sheet, the thickness of the silicone rubber frame is 5, and the thickness of the fiber sheet is 4.3mm.

[0054] (2) Sol impregnation and gelation: Mix the silicon source, ethanol and water evenly, stir evenly to obtain silica sol, impregnate the glass fiber sheet described in step 1 with the silica sol, and then add gelation The catalyst is gelled to obtain a silica wet gel sheet;

[0055] (3) Gel aging: aging the silica wet gel sheet at room temperature or at 50°C for 16 hours;

[0056] (4) Gel hydrophobization treatment: p...

Embodiment 3

[0067] A preparation method of an anti-buffer silica airgel thermal insulation sheet, characterized in that the steps are as follows:

[0068] (1) Preparation of fiber sheet:

[0069] (a) Cut the silicone rubber roll material with a back-shaped knife die to obtain a back-shaped silicone rubber frame of the required size; (b) Put the aluminum silicate fiber felt sheet of the corresponding size into the silicone rubber frame to obtain The required aluminum silicate fiber sheet, wherein the thickness of the silicone rubber frame is 6mm, and the thickness of the fiber sheet is 5mm.

[0070] (2) Sol impregnation and gelation: Take the silicon source, ethanol and water and mix evenly, then add the gelling catalyst in order to make the pH of the solution 6.5, stir evenly to obtain the catalyzed silica sol, and the silicon dioxide sol described in step 1 impregnating the alumina fiber sheet and gelling in the catalyzed silica sol to obtain a silica wet gel sheet;

[0071] (3) Gel ag...

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Abstract

The invention belongs to the field of heat insulation materials, and discloses a preparation method of an anti-buffering silicon dioxide aerogel heat insulation sheet. The preparation method comprises the following steps: cutting a felt body according to actual application requirements in a fiber felt stage, and combining the felt body with an anti-buffering part silicon rubber frame; and then, finishing the preparation process of the anti-buffering aerogel heat insulation sheet according to the processes of sol-gel, drying and packaging, so that the phenomenon that a large amount of aerogel powder falls off in the processes of cutting aerogel roll felt and packaging functional components in the traditional preparation process is avoided, and the conditions that the heat insulation performance of the aerogel heat insulation component is reduced and the distribution is not uniform are influenced to a certain extent. The anti-buffering aerogel heat insulation sheet obtained through drying is directly packaged, so that the powder falling problem existing in the existing aerogel sheet preparation process is effectively solved, and high packaging efficiency is achieved.

Description

technical field [0001] The invention belongs to the field of heat insulation materials, and in particular relates to a preparation method of an anti-buffer silica airgel heat insulation sheet. Background technique [0002] At present, the development of new energy, the improvement of the utilization rate of existing energy and the conservation of energy have attracted great attention from all countries. my country is an energy-poor country, therefore, rational use of energy and energy conservation are of great significance to the sustainable development of our society. Adopting new technologies and processes to develop environmentally friendly heat insulation materials is one of the most effective and economical measures to save energy. [0003] SiO 2 As an emerging super heat insulation material, airgel has an extremely low thermal conductivity, which is far lower than the thermal conductivity of 0.25W / m K of static air at room temperature, and has an incomparable heat in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B30/02C04B38/00H01M10/625H01M10/658B32B27/02B32B27/30B32B27/08B32B27/36B32B17/04B32B17/06B32B9/00B32B9/04B32B37/06B32B37/10
CPCC04B30/02H01M10/625H01M10/658B32B5/02B32B5/26B32B27/12B32B27/36B32B37/06B32B37/10C04B2201/32C04B2111/00612B32B2260/021B32B2260/044B32B2262/0246B32B2262/101B32B2262/10B32B2307/304B32B2307/56C04B14/064C04B38/0045C04B14/42C04B14/4656Y02E60/10
Inventor 董会娜张继承张东生何凤霞王琰陈帅张蔓蔓
Owner GONG YI VAN-RES INNOVATION COMPOSITE MATERIAL CO LTD
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