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Heat-proof and heat-insulation double-gradient functional composite material and preparation method thereof

A functional composite material and dual-gradient technology, applied in chemical instruments and methods, flat products, and other household appliances, can solve the problems of easy peeling of thermal protection materials, improve interface bonding effect, improve ablation resistance, Efficient heat insulation effect

Active Publication Date: 2022-04-12
HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this application is to provide a heat-resistant and heat-insulating dual-gradient functional composite material and its preparation method to solve the problem of easy peeling between layers of heat protection materials at present

Method used

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  • Heat-proof and heat-insulation double-gradient functional composite material and preparation method thereof
  • Heat-proof and heat-insulation double-gradient functional composite material and preparation method thereof
  • Heat-proof and heat-insulation double-gradient functional composite material and preparation method thereof

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preparation example Construction

[0057] According to another typical embodiment of the present invention, a method for preparing the heat-resistant and heat-insulating dual-gradient functional composite material as described above is provided, the method comprising:

[0058] S1. Obtain pre-cured heat insulation layer, transition layer and heat protection layer;

[0059] In some embodiments, the preparation method of the pre-cured insulation layer includes:

[0060] S1.1. The modified phenolic resin and quartz fiber felt are mixed to obtain a mixture,

[0061] S1.2. Curing and molding the mixture to obtain a shaped product;

[0062] In this embodiment, the curing molding adopts a low-pressure RTM glue injection process, the glue injection temperature of the low-pressure RTM glue injection process can be 10°C-70°C, and the glue injection time of the low-pressure RTM glue injection process can be 2h- 10h, the injection pressure of the low-pressure RTM injection process can be 0.05MPa-0.3Mpa;

[0063] When the...

Embodiment 1

[0081] A method for preparing a heat-resistant and heat-insulating dual-gradient functional composite material, the method comprising:

[0082] S1.1. The modified phenolic resin and quartz fiber felt are mixed to obtain a mixture,

[0083] In the present embodiment, the natural state density of quartz fiber felt is 0.1g / cm 3 ;

[0084] S1.2. Curing and molding the mixture to obtain a shaped product;

[0085] In this embodiment, the low-pressure RTM glue injection process is used for curing and molding. The glue injection temperature of the low-pressure RTM glue injection process is 30°C, and the glue injection time of the low-pressure RTM glue injection process is 6 hours. The low-pressure RTM glue injection process The glue injection pressure is 0.05Mpa;

[0086] S1.3. Pre-curing the molded product to obtain a pre-cured heat insulation layer;

[0087] In this embodiment, the curing temperature of the pre-curing is 90° C., and the curing time of the pre-curing is 8 hours; ...

Embodiment 2

[0098] A method for preparing a heat-resistant and heat-insulating dual-gradient functional composite material, the method comprising:

[0099] S1.1. The modified phenolic resin and quartz fiber felt are mixed to obtain a mixture,

[0100] In the present embodiment, the natural state density of quartz fiber felt is 0.3g / cm 3 ;

[0101] S1.2. Curing and molding the mixture to obtain a shaped product;

[0102] In this embodiment, the low-pressure RTM glue injection process is used for curing and molding. The glue injection temperature of the low-pressure RTM glue injection process is 70°C, and the glue injection time of the low-pressure RTM glue injection process is 4 hours. The low-pressure RTM glue injection process The glue injection pressure is 0.3MPa;

[0103] S1.3. Pre-curing the molded product to obtain a pre-cured heat insulation layer;

[0104] In this embodiment, the curing temperature of the pre-curing is 80°C, and the curing time of the pre-curing is 10h;

[010...

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Abstract

The invention particularly relates to a heat-proof and heat-insulation double-gradient functional composite material and a preparation method thereof, and belongs to the technical field of heat-insulation materials, the composite material comprises a heat-insulation layer, a transition layer and a heat-proof layer, and the transition layer is arranged between the heat-insulation layer and the heat-proof layer; the heat insulation layer is prepared from the following raw materials: modified phenolic resin and quartz fiber felt; raw materials of the transition layer comprise mixed multifunctional resin and first quartz fiber cloth; the heat-proof layer is prepared from phenolic resin, ablation-resistant filler and second quartz fiber cloth; the base materials of the heat insulation layer, the transition layer and the heat protection layer are all selected from phenolic resin material systems with good ablation performance, good bonding performance and compatibility are achieved, obvious material interfaces can be eliminated, and the interface bonding effect is improved. And phenolic mixed resin is adopted as a transition layer between the heat-proof layer and the heat-insulating layer, so that the purpose of gradient gradual change of the material performance is achieved, and the problem that various layers of the existing heat protection material are easy to peel off is solved.

Description

technical field [0001] The invention belongs to the technical field of heat-insulating materials, and in particular relates to a heat-proof and heat-insulating double-gradient functional composite material and a preparation method thereof. Background technique [0002] The aircraft conducts a large-scale orbit-changing maneuver flight in the adjacent space atmosphere, and has a large flight Mach and a long flight time. It is a typical long-duration, high-enthalpy aerobic environment. Inability to give full play to the characteristics of ablation and heat absorption leads to a decline in the thermal protection effect, and due to the high thermal conductivity and density of the material itself, it cannot meet the requirements of low density, integration, integration, high-efficiency heat insulation and near-zero combustion proposed by the development of aircraft. eclipsed product demand. [0003] Research on thermal protection materials and technology is an important project ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/00B32B9/04B32B27/04B32B27/42B32B27/20B32B27/12B32B7/09B32B33/00C08K3/38C08K3/34C08K3/26C08K7/28C08L61/06B29D7/01
CPCY02T50/40
Inventor 贺晓伟罗海涛方登科谢道成黄拓
Owner HUBEI SANJIANG AEROSPACE GRP HONGYANG ELECTROMECHANICAL
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