Low-dust aerogel product and preparation method thereof

An aerogel and composite aerogel technology, which is applied in chemical instruments and methods, layered products, synthetic resin layered products, etc. The effect of promoting molding

Pending Publication Date: 2022-07-29
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

[0005] In view of this, the object of the present invention is to provide a kind of low-dust airgel product and preparation method thereof, to solve the technical problem that the airgel powder is easy to come off the surface of the existing airgel felt

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] Generally speaking, the preparation method of low-dust aerogel products includes the following steps:

[0028] Step 1: Lay the hot-melt adhesive mesh film, the fiber mat and the hot-melt adhesive mesh film in sequence to obtain a laminated material;

[0029] Step 2: Impregnating the layup material with sol to form a wet fiber mat;

[0030] Step 3: After gelling and drying the wet fiber felt obtained in step 2, a composite aerogel felt is obtained;

[0031] Step 4: heating the composite aerogel felt to obtain a low-dust aerogel product.

[0032] The low-dust aerogel product can be prepared by the above method.

[0033] The basic principle of the low-dust aerogel product and its preparation method of the present invention is as follows: superimposing and laying a hot-melt adhesive mesh film on the upper and lower surfaces of the fiber mat, and the hot-melt adhesive mesh film and the fiber felt are impregnated with sol together. Acting as a fiber, the gap and surface of...

Embodiment 1

[0037] The present embodiment provides a method for preparing a low-dust aerogel product, comprising the following steps:

[0038] Step 1: Lay the hot-melt adhesive mesh film, the fiber mat and the hot-melt adhesive mesh film in sequence to obtain a laminated material; wherein, the hot-melt adhesive mesh film is a PES hot-melt adhesive mesh film.

[0039] Step 2: Impregnating the layup material with sol to form a wet fiber mat;

[0040] Step 3: After gelling and drying the wet fiber felt obtained in step 2, a composite aerogel felt is obtained;

[0041] Step 4: heating the composite aerogel felt to obtain a low-dust aerogel product.

[0042]In step 2, the sol is silica sol, and the configuration steps of the silica sol include: in terms of molar ratio, mixing uniformly according to silicon source: ethanol: water = 1:30:12, and then adding an alkali catalyst and stirring uniformly to obtain Silica sol. The silicon source is methyltrimethoxysilane, and the alkali catalyst is ...

Embodiment 2

[0047] The present embodiment provides a method for preparing a low-dust aerogel product, comprising the following steps:

[0048] Step 1: The hot-melt adhesive mesh film, the fiber mat, and the hot-melt adhesive mesh film are stacked and laid in sequence to obtain a laminated material; wherein, the hot-melt adhesive mesh film is a TPU hot-melt adhesive mesh film.

[0049] Step 2: Impregnating the layup material with sol to form a wet fiber mat;

[0050] Step 3: After the wet fiber felt obtained in step 2 is subjected to gelation, hydrophobicity and drying treatment, a composite aerogel felt is obtained;

[0051] Step 4: encapsulating the composite aerogel felt obtained in step 3 to obtain an encapsulated composite aerogel felt;

[0052] Step 5: heating the encapsulated composite aerogel felt to obtain a low-dust aerogel product.

[0053] In step 2, silica sol is used as the sol, and the configuration steps of the silica sol include: in molar ratio, mixing uniformly accordin...

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Abstract

The invention belongs to the technical field of thermal insulation materials, and relates to a low-dust aerogel product and a preparation method thereof.The preparation method of the low-dust aerogel product comprises the steps that 1, a hot melt adhesive net film, a fiber felt and a hot melt adhesive net film are sequentially stacked and laid, and a stacked material is obtained; step 2, dipping the stacked material in the sol to form a wet fiber felt; 3, the wet fiber felt obtained after dipping treatment in the step 2 is subjected to gelation and drying treatment, and a composite aerogel felt is obtained; and step 4, carrying out heating treatment on the composite aerogel felt to obtain the low-dust aerogel product. According to the invention, the hot melt adhesive net film in a heated and molten state is infiltrated on the surface of the fiber felt to form packaging protection, so that aerogel powder falling off from the surface of the aerogel product is reduced, the aerogel product without powder falling can be prepared, the health of production and use personnel is ensured, and the market demand is met.

Description

technical field [0001] The invention belongs to the technical field of thermal insulation materials, and in particular relates to a low-dust aerogel product and a preparation method thereof. Background technique [0002] At present, developing new energy, improving the utilization rate of existing energy and saving energy have attracted great attention from all countries. my country is an energy-poor country. Therefore, rational utilization of energy and energy conservation are of great significance to the sustainable development of our society. It is one of the most effective and economical measures to save energy by adopting new technology and new process to develop environment-friendly thermal insulation materials. [0003] SiO 2 As an emerging super thermal insulation material, aerogel has a very low thermal conductivity, far lower than the thermal conductivity of static air at room temperature of 0.25W / m·K. It has an unmatched thermal insulation effect and low density...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/36B32B27/40B32B27/30B32B27/12B32B5/02B32B33/00B32B38/08B32B37/06B32B37/10B32B38/16
CPCB32B27/36B32B27/40B32B27/306B32B27/12B32B5/02B32B33/00B32B38/08B32B37/06B32B37/10B32B38/164B32B2260/021B32B2307/304
Inventor 张继承刘喜宗张东生陈帅张蔓蔓张珂
Owner GONG YI VAN-RES INNOVATION COMPOSITE MATERIAL CO LTD
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