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Multi-layer high-strength thermal-insulation material and preparation method thereof

A heat insulation and high-strength technology, applied in ceramic products, other household appliances, applications, etc., can solve problems that affect the use effect and life, performance degradation, hazards, etc., to achieve suitable for large-scale industrial production, stable product quality, The effect of strong market competitiveness

Inactive Publication Date: 2019-02-15
中山科邦化工材料技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Airgel felt can greatly improve the mechanical properties of airgel, such as strength, formability, flexibility, etc., but due to the segmentation of the airgel substrate, the dispersion of silica airgel itself is poor, resulting in The formed composite materials are difficult to bear the heat load under high temperature conditions and deform or produce structural deformation, resulting in defects such as local heat insulation performance and uneven mechanical strength, which affect the application of these composite heat insulation materials. Airgel is mostly small The form of particles is embedded in the gaps of the substrate, and the small particles on the surface are easy to fall out during production and use, and the small nano-sized particles are potentially harmful to humans, and as the particles fall off, airgel-based materials The performance will also decrease, which will affect its use effect and life

Method used

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  • Multi-layer high-strength thermal-insulation material and preparation method thereof
  • Multi-layer high-strength thermal-insulation material and preparation method thereof
  • Multi-layer high-strength thermal-insulation material and preparation method thereof

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Embodiment 1～4

[0022] A method for preparing a multi-layer high-strength thermal insulation material, comprising the steps of:

[0023] 1), preferably, the preparation method of the airgel core material is as follows: the glass fiber filaments are chopped to a length of 5-10 mm, and then fluffed, combed together with a leavening agent into monofilaments, and knotted in a mould. Form a felt net, then laminate the felt net, control the thickness within 1mm, insert the trachea into the gap between the felt nets, then seal the mold into a vacuum bag, and start to inject silica airgel along the trachea after vacuuming for about 15 seconds , and then connect the mold into the oven, bake at 135-165°C for 10-12 minutes, and obtain the airgel core material after cooling;

[0024] 2) Put the airgel core material into the mold, and pull it with the wire to keep the same distance from the two side walls of the mold;

[0025] 3) The structural support layer material composed of heat-resistant material, ...

Embodiment 5～6

[0028] A method for preparing a multi-layer high-strength thermal insulation material, comprising the steps of:

[0029] 1), preferably, the preparation method of the airgel core material is as follows: the glass fiber filaments are chopped to a length of 5-10 mm, and then fluffed, combed together with a leavening agent into monofilaments, and knotted in a mould. Form a felt net, then laminate the felt net, control the thickness within 1mm, insert the trachea into the gap between the felt nets, then seal the mold into a vacuum bag, and start to inject silica airgel along the trachea after vacuuming for about 15 seconds , and then connect the mold into the oven, bake at 135-165°C for 10-12 minutes, and obtain the airgel core material after cooling;

[0030] 2) Put the airgel core material into the mold, and pull it with the wire to keep the same distance from the two side walls of the mold;

[0031] 3) The structural support layer material composed of vinyl silicone resin, cro...

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Abstract

The invention discloses a multi-layer high-strength thermal-insulation material and a preparation method thereof. The technical scheme comprises the following steps: placing an aerogel core material in a mold, and pulling by a metal wire so that the aerogel core material keeps the same spacing with two side walls of the mold; mixing structure supporting layer materials, guiding and introducing themixed structure supporting layer materials into spaces at two sides of the aerogel core material in the mold; and naturally drying for 12-28 H at a relative humidity of 45% to obtain a high-strengththermal-insulation plate. According to the invention, the aerogel core material is coated with the multi-layer high-strength thermal-insulation material by utilizing structure supporting layers, so that the material has thermal insulation properties while the strength of the material is improved, and the problem of falling off of powder on the surface of the material is solved.

Description

【Technical field】 [0001] The invention belongs to the technical field of thermal insulation materials, and in particular relates to a multi-layer high-strength thermal insulation material and a preparation method thereof. 【Background technique】 [0002] Airgel felt can greatly improve the mechanical properties of airgel, such as strength, formability, flexibility, etc., but due to the segmentation of the airgel substrate, the dispersion of silica airgel itself is poor, resulting in The formed composite materials are difficult to withstand thermal load under high temperature conditions and deform or produce structural deformation, resulting in defects such as local thermal insulation performance and uneven mechanical strength, which affect the application of these composite thermal insulation materials. Airgel is mostly small The form of particles is embedded in the gaps of the substrate, and the small particles on the surface are easy to fall out during production and use, a...

Claims

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Application Information

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IPC IPC(8): C04B28/26C04B28/00C04B28/34C04B30/02C04B38/08
CPCC04B28/00C04B28/26C04B28/344C04B30/02C04B2111/00612C04B2201/32C04B2201/50C04B14/14C04B18/082C04B18/027C04B14/305C04B20/0048C04B24/42C04B2103/0068C04B22/126C04B14/18C04B14/383C04B14/064C04B14/42
Inventor 王淦吕文东栾焕光张秀玲陈和锐
Owner 中山科邦化工材料技术有限公司
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