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High-temperature-resistant multi-layer composite heat-insulating component and preparation method thereof

A multi-layer composite, high temperature resistant technology, applied in vehicle parts, chemical instruments and methods, lamination and other directions, can solve the problems of low use temperature, low aluminum density, not suitable for high temperature heat insulation environment, etc., and achieve good heat insulation effect , The preparation method is simple and feasible, and the thermal insulation effect is excellent in stability.

Inactive Publication Date: 2019-07-12
NO 59 RES INST OF CHINA ORDNANCE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reflectance value of the material is affected by its initial surface state and service temperature. The commonly used reflective layer material, aluminum, has a low density and still has a high reflectance value in a severely oxidized state, but its use temperature is low, so it is not suitable for High temperature insulation environment

Method used

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  • High-temperature-resistant multi-layer composite heat-insulating component and preparation method thereof
  • High-temperature-resistant multi-layer composite heat-insulating component and preparation method thereof
  • High-temperature-resistant multi-layer composite heat-insulating component and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A high temperature resistant multilayer composite heat insulation component: it is composed of a reflection layer and a heat resistance layer laminated, the reflection layer close to the hot surface is the surface layer of the heat insulation component, and the reflection layer close to the cold surface is the surface layer of the heat insulation component The surface layer of the cold surface, the reflective layer is a metal foil coated with a high reflectivity material, the heat resistance layer is a heat insulating material with a low thermal conductivity; the high reflectivity material is silver, and the low thermal conductivity The thermal insulation material is ceramic fiber paper; the reflective layer is stainless steel foil with silver-plated surface, and its thickness is 0.033mm; the above-mentioned thermal resistance layer is ceramic fiber paper, and its thickness is 0.26mm; The total thickness is not more than 2mm.

[0025] The preparation method of the above...

Embodiment 2

[0045] A high temperature resistant multilayer composite heat insulation component: it is composed of a reflection layer and a heat resistance layer laminated, the reflection layer close to the hot surface is the surface layer of the heat insulation component, and the reflection layer close to the cold surface is the surface layer of the heat insulation component The surface layer of the cold surface, the reflective layer is a metal foil coated with a high reflectivity material, the heat resistance layer is a heat insulating material with a low thermal conductivity; the high reflectivity material is silver, and the low thermal conductivity The thermal insulation material is ceramic fiber paper; the reflective layer is stainless steel foil with silver-plated surface, and its thickness is 0.03mm; the above-mentioned thermal resistance layer is ceramic fiber paper, and its thickness is 0.25mm; The total thickness is not more than 2mm.

[0046] The preparation method of the above-...

Embodiment 3

[0049] A high temperature resistant multilayer composite heat insulation component: it is composed of a reflection layer and a heat resistance layer laminated, the reflection layer close to the hot surface is the surface layer of the heat insulation component, and the reflection layer close to the cold surface is the surface layer of the heat insulation component The surface layer of the cold surface, the reflective layer is a metal foil coated with a high reflectivity material, the heat resistance layer is a heat insulating material with a low thermal conductivity; the high reflectivity material is silver, and the low thermal conductivity The thermal insulation material is ceramic fiber paper; the reflective layer is stainless steel foil with silver-plated surface, and its thickness is 0.035mm; the above-mentioned thermal resistance layer is ceramic fiber paper, and its thickness is 0.27mm; The total thickness is not more than 2mm.

[0050] The preparation method of the above...

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Abstract

The invention discloses a high-temperature-resistant multi-layer composite heat-insulating component which comprises a reflective layer and a heat resistant layer through lamination. A reflective layer close to the hot surface is a hot surface layer of the heat-insulating component, and a reflective layer close to the cold surface is a cold surface layer of the heat-insulating component; the reflective layers adopt metal foils plated with a material having a high reflectivity; the heat resistance layer adopts a heat-insulating material having a low thermal conductivity. The high-temperature-resistant multi-layer composite heat-insulating component is made of a specific material matched with a specific thickness, so that the product provided according to the invention has good heat insulation effect, and the thermal conductivity is 0.017 W / (m.K) to 0.025 W / (m.K); when the temperature of the hot surface is 900 DEG C, the temperature of the cold surface can be lower than 600 DEG C; on theother hand, the heat insulation effect is excellent in stability, and is not attenuated within 48 hours, that is, the temperature of the cold surface is stable and does not rise within 48 hours; a preparation method is simple and feasible, especially suitable for the thermal insulation of the hot end of aviation, and is worthy of market application.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a high-temperature-resistant multilayer composite heat insulation part and a preparation method thereof. Background technique [0002] The engine is the "heart" of the helicopter, and the use of a high-power engine is the basis for improving the maneuverability and flight speed of the helicopter. The increase of engine power requires a further increase in gas temperature. The outlet temperature of the gas turbine of the engine is as high as 900°C. The power turbine casing needs to be heat-insulated, and the working temperature of the power turbine casing is required to be below 600°C. [0003] At present, the ultra-fine glass wool and asbestos traditional heat insulation materials used have problems such as high thermal conductivity, large thickness, heavy weight, environmental protection, inconvenient maintenance, pulverization and vibration falling off, etc. Traditi...

Claims

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Application Information

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IPC IPC(8): B32B15/12B32B15/18B32B29/00B32B37/00B32B38/00B32B38/16B64C1/40
CPCB32B15/12B32B15/18B32B29/00B32B37/0084B32B38/00B32B38/0036B32B38/162B32B38/164B32B2250/42B32B2307/306B32B2311/30B32B2605/18B64C1/40
Inventor 吴护林李忠盛孙彩云董玲抒黄安畏舒露吴永鹏吴道勋
Owner NO 59 RES INST OF CHINA ORDNANCE IND
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