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Heat insulation device and preparation method thereof

A heat insulation device and heat insulation layer technology, which is applied in lamination devices, chemical instruments and methods, non-polymer adhesive additives, etc., can solve the problem of airgel heat insulation layer and adhesive tape peeling off and failure of heat insulation Fixed layer, long service time, etc., to avoid the effect of reducing thermal conductivity

Pending Publication Date: 2022-07-29
SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When preparing the heat insulation layer of the engine, the existing technology uses ceramic fiber tape to wrap and fix the heat insulation layer; since the engine is in a state of vibration when it is working, and because the heat insulation layer is aerogel, it will appear during the vibration process. The airgel heat insulation layer and the glue layer of the tape peel off, resulting in the inability to fix the heat insulation layer;
[0003] When using liquid glue instead of adhesive tape to fix the heat insulation layer, the colloid will penetrate into the internal pores of the airgel, resulting in a significant decline in the heat insulation performance of the airgel, and the liquid glue will still appear during the vibration process when the glue layer is thin. The airgel heat insulation layer and the glue layer of the tape are peeling off; therefore, after fixing the external heat insulation layer of the engine, how to realize the long service life of the heat insulation layer without affecting the heat insulation performance is a problem that needs to be solved in this field

Method used

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  • Heat insulation device and preparation method thereof
  • Heat insulation device and preparation method thereof

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Embodiment 1

[0035] One aspect of this embodiment provides a thermal insulation device, which includes a first thermal insulation layer, wherein the first thermal insulation layer is a segmented structure; and a second thermal insulation layer, the second thermal insulation layer passes through an adhesive layer Connected with the first heat insulating layer, the second heat insulating layer is used to prevent relative displacement between the sections of the first heat insulating layer; the adhesive layer is prepared from resin material, first additive and second additive The first heat insulating layer is an aerogel structure; the second heat insulating layer is made of flexible materials; the thickness of the first heat insulating layer is greater than that of the second heat insulating layer and the adhesive layer; the The thickness of the adhesive layer is 0.05mm;

[0036] The resin material is epoxy resin, the first additive is dibutyl phthalate, and the second additive is triethylen...

Embodiment 2

[0045] The same features of this embodiment and the first embodiment will not be repeated, and the different features of this embodiment and the first embodiment are:

[0046] One aspect of this embodiment provides a thermal insulation device, wherein the first additive is dibutyl phthalate, and the second additive is diethylaminopropylamine; the resin material, the first additive, and the second additive The mass ratio of mixing is 100:6:14; the thickness of the adhesive layer is 0.03mm; under the vibration condition of the frequency of 600-1000Hz, the heat insulation device lasts for 23h, the second heat insulation layer and / or the second heat insulation layer The thermal insulation layer is not separated from the adhesive layer.

[0047] Another aspect of this embodiment provides a method for preparing a thermal insulation device. After the second thermal insulation layer is wound, a release cloth is then wound on the surface of the second thermal insulation layer; the firs...

Embodiment 3

[0055] The same features of this embodiment and the first embodiment will not be repeated, and the different features of this embodiment and the first embodiment are:

[0056] One aspect of this embodiment provides a thermal insulation device, wherein the first additive is maleic anhydride, the second additive is triethylenetetramine; the resin material, the first additive, and the second additive are mixed The mass ratio is 100:4:10; the thickness of the adhesive layer is 0.01mm; the thermal conductivity of the heat insulation device is 0.029W / m·K; the heat insulation device is under vibration conditions with a frequency of 600-1000Hz , the second thermal insulation layer and / or the second thermal insulation layer is not separated from the adhesive layer for a duration of 20h.

[0057] Another aspect of this embodiment provides a method for preparing a thermal insulation device. After the second thermal insulation layer is wound, a release cloth is then wound on the surface o...

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Abstract

The invention discloses a heat insulation device which is characterized by comprising a first heat insulation layer, and the first heat insulation layer is of a sectional structure; the second heat insulation layer is connected with the first heat insulation layer through a bonding layer, and the second heat insulation layer is used for preventing relative displacement between the sections of the first heat insulation layer; the bonding layer is prepared from a resin material, a first additive and a second additive; the invention further discloses a preparation method of the heat insulation device. Through the method, the second heat insulation layer is not separated from the first heat insulation layer when the first heat insulation layer and the second heat insulation layer are in a vibration state after curing, and the heat conductivity of the first heat insulation layer is not affected.

Description

technical field [0001] The invention relates to the field of a thermal insulation device and a preparation and assembly method of the thermal insulation device, in particular to a preparation method of an engine thermal insulation layer. Background technique [0002] In the preparation of the engine heat insulation layer, the prior art uses ceramic fiber tape to wrap and fix the heat insulation layer; because the engine is in a vibration state when it is working, and because the heat insulation layer is aerogel, the vibration occurs during the vibration process. The aerogel insulation layer and the adhesive layer of the tape fall off, resulting in the inability to fix the insulation layer; [0003] When liquid glue is used instead of tape to fix the thermal insulation layer, the colloid penetrates into the internal pores of the aerogel, resulting in a significant decrease in the thermal insulation performance of the aerogel, and the liquid glue still appears in the vibration...

Claims

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Application Information

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IPC IPC(8): B32B9/00B32B9/04B32B7/12B32B5/18B32B37/12B32B38/00C09J11/06C09J163/00
CPCB32B5/18B32B5/02B32B5/245B32B7/12B32B37/1284B32B38/00C09J163/00C09J11/06B32B2038/0076B32B2262/10B32B2266/126B32B2307/304C08K5/12C08K5/17
Inventor 李涵周长灵徐鸿照刘玉峰张作焦杨洋朱平
Owner SHANDONG RES & DESIGN ACADEMY OF IND CERAMICS