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Preparation process of nano aerogel heat insulation board

A nano-aerogel and preparation process technology, applied in the field of chemical materials, can solve the problems of limited application scope, poor thermal insulation of thermal insulation boards, complicated construction steps, etc., and achieves excellent hydrophobic performance, easy mass production, and thermal insulation performance. good effect

Inactive Publication Date: 2020-04-03
GUIZHOU AEROSPACE WUJIANG MACHINERY & ELECTRICITYEQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A good thermal insulation board has good compressive strength, good flexural strength, excellent fire resistance, and high durability. However, the existing thermal insulation board has poor thermal insulation, complex construction steps, and large application limitations.
Today, when building energy conservation is becoming more and more important, these traditional building materials do not meet the requirements of energy conservation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The preparation technology of nano-airgel thermal insulation board comprises the following steps:

[0012] Weigh according to parts by weight: 20 parts of ethanol, 10 parts of dispersant, 10 parts of silica airgel, 1 part of elastic acrylic emulsion, 40 parts of ceramic fiber with a length of 25 mm for later use. Stir the dispersant evenly at a speed of 1300r / min, and the stirring time is 1.2h, then add elastic acrylic emulsion and ceramic fiber in turn, and add one substance each time until it is evenly stirred before adding the next substance, the stirring speed is 600r / min; the time is 0.7h, that is, the slurry is prepared;

[0013] Pour the prepared slurry into the membrane cavity, press it into a board with an air press, and then dry it at 120°C to obtain a blank. After scraping the bottom of the blank, turning it over, setting its thickness, and polishing, the airgel separator is obtained. hot plate.

Embodiment 2

[0015] The preparation process of the nano-airgel heat insulation board comprises the following steps: Weighing according to parts by weight: 30 parts of toluene, 1 part of dispersant, 20 parts of silica airgel, 3 parts of acrylic resin, 30 parts of The ceramic fiber is ready for use. First, put the toluene into the reaction kettle, add the dispersant and stir evenly at a speed of 1500r / min. The stirring time is 1h, then add acrylic resin and ceramic fiber in turn, and add one substance each time and wait for it to stir. After uniformity, add the next substance, the stirring speed is 500r / min; the time is 0.5h, and the slurry is prepared; the prepared slurry is poured into the membrane cavity, pressed into a board by an air press, and then heated at 80°C Drying under conditions to obtain a blank, scraping the bottom of the blank, turning it over, setting its thickness, and polishing it to obtain an airgel heat insulation board.

Embodiment 3

[0017] The preparation method of the airgel plate comprises the following steps: weighing according to parts by weight: 80 parts of isooctane, 5 parts of dispersant, 14 parts of silica airgel, 10 parts of epoxy resin, 5 parts of The ceramic fiber is ready for use. First, put the isooctane into the reaction kettle, add the dispersant and stir evenly at a speed of 1000r / min. The stirring time is 0.8h, then add epoxy resin and ceramic fiber in sequence, and add one After the substance is stirred evenly, the next substance is added, the stirring speed is 900r / min; the time is 0.6h, and the slurry is obtained;

[0018] Pour the prepared slurry into the membrane cavity, press it into a board by an air press, and then dry it at 90°C to obtain a blank. After scraping the bottom of the blank, turning it over, setting its thickness, and polishing, the airgel separator is obtained. hot plate.

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PUM

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Abstract

The invention discloses a preparation process of a nano aerogel heat insulation board. The process adopts the following raw materials in parts by weight: 20-100 parts of a solvent, 1-10 parts of a dispersing agent, 5-20 parts of silicon dioxide aerogel, 1-10 parts of a resin and 5-40 parts of ceramic fiber. The nano aerogel heat insulation board is prepared by adding ceramic fibers and the like asraw materials mainly through the physical characteristics of the silicon dioxide aerogel, so that the prepared nano aerogel heat insulation board is good in heat insulation performance and rigidity,and can be used for heat preservation of building walls; and on the other hand, the nano aerogel heat insulation board is prepared from the materials through a simple manufacturing method, mass production is facilitated, the heat conductivity coefficient is smaller than or equal to 0.025 w / mK, the hydrophobic performance is excellent, and meanwhile the nano aerogel heat insulation board can be used in a humid environment.

Description

technical field [0001] The invention relates to a preparation process of a nano-airgel thermal insulation board, which belongs to the technical field of chemical materials. Background technique [0002] At present, due to the increasing attention to the fire protection of thermal insulation materials, the development of domestic thermal insulation materials is becoming more and more rapid. And house construction, especially the house construction in the alpine region, a large amount of heat in the house is dissipated through the roof and the wall. Therefore, it is necessary to pave insulation boards on the roof and outer walls to play the role of thermal insulation and energy saving. A good thermal insulation board has good compressive strength and flexural strength, excellent fire resistance and high durability. However, the existing thermal insulation board has poor thermal insulation performance, complex construction steps, and large application limitations. Today, when...

Claims

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Application Information

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IPC IPC(8): C04B26/06C04B26/14C04B26/04C04B38/00B29D7/01
CPCB29D7/01C04B26/04C04B26/06C04B26/14C04B38/0045C04B24/026C04B2103/408C04B14/064C04B14/40C04B24/00
Inventor 胡陈
Owner GUIZHOU AEROSPACE WUJIANG MACHINERY & ELECTRICITYEQUIP