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Material for top plates in space shuttle cabins and preparation method thereof

A technology for a space shuttle and a roof, which is applied in the field of materials for the roof of a space shuttle cabin and its preparation, can solve the problems of insufficient cosmic ray radiation resistance, poor toughness, etc., and achieves environmental corrosion resistance, good fatigue resistance, lightening The effect of weight

Inactive Publication Date: 2016-06-29
HUIAN TAIDA TRADING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polytetrafluoroethylene product material obtained by using this invention has good chemical stability, electrical insulation, high and low temperature resistance, heating recoverability, and aviation hydraulic oil resistance, and is suitable for the protection of hydraulic sealing systems of aviation airborne equipment. rings and materials, but poor toughness and insufficient resistance to cosmic ray radiation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A material for the ceiling in the space shuttle cabin, the raw material components of which include:

[0048] Bismaleimide: 370 g, polytetrafluoroethylene: 330 g, polyacrylonitrile: 180 g, polyphenylene sulfide: 90 g, cerium oxide: 30 g.

[0049] Its preparation method comprises the following steps:

[0050] Step S01: 370 g of bismaleimide, 330 g of polytetrafluoroethylene, 180 g of polyacrylonitrile, 90 g of polyphenylene sulfide, and 30 g of cerium oxide were mixed and pulverized into particles of 45 μm.

[0051] Step S02: Under the condition of a pressure of 45 MPa and a heating rate of 88° C. / hour, the temperature of the mixed particles is raised to 450° C. and kept at a temperature of 8 hours, so that the particles of various materials are fully fused to obtain rough embryos.

[0052] Step S03: put the rough embryo obtained in step S02 into water and cool down for 34 minutes to eliminate stress.

[0053] Step S04: Heat the stress-relieved rough embryo to 270°C un...

Embodiment 2

[0055] A material for the ceiling in the space shuttle cabin, the raw material components of which include:

[0056] Bismaleimide: 360 g, polytetrafluoroethylene: 320 g, polyacrylonitrile: 180 g, polyphenylene sulfide: 100 g, lanthanum oxide: 40 g.

[0057] Its preparation method comprises the following steps:

[0058] Step S01: 360 g of bismaleimide, 320 g of polytetrafluoroethylene, 180 g of polyacrylonitrile, 100 g of polyphenylene sulfide, and 40 g of lanthanum oxide were mixed and pulverized into particles of 46 μm.

[0059] Step S02: Under the condition of a pressure of 44 MPa and a heating rate of 86° C. / hour, the temperature of the mixed particles is raised to 460° C. and kept for 6 hours, so that the particles of various materials are fully fused to obtain rough embryos.

[0060] Step S03: put the rough embryo obtained in step S02 into water and cool down for 36 minutes to eliminate stress.

[0061] Step S04: Heat the stress-relieved rough embryo to 260°C under the ...

Embodiment 3

[0063] A material for the ceiling in the space shuttle cabin, the raw material components of which include:

[0064] Polyimide: 370 g, polytetrafluoroethylene: 310 g, polyacrylonitrile: 190 g, polyphenylene sulfide: 80 g, holmium oxide: 50 g.

[0065] Its preparation method comprises the following steps:

[0066] Step S01: Mix and pulverize 370 g of polyimide, 310 g of polytetrafluoroethylene, 190 g of polyacrylonitrile, 80 g of polyphenylene sulfide, and 50 g of holmium oxide into particles of 47 μm.

[0067] Step S02: Under the condition of a pressure of 47 MPa and a heating rate of 87° C. / hour, the temperature of the mixed particles is raised to 470° C., and the temperature is maintained for 7 hours, so that the particles of various materials are fully fused to obtain rough embryos.

[0068] Step S03: put the rough embryo obtained in step S02 into water and cool down for 37 minutes to eliminate stress.

[0069] Step S04: Heat the stress-relieved rough billet to 270°C under ...

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PUM

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Abstract

The invention discloses a material for top plates in space shuttle cabins. The material is composed of 30-40% of polyimide, 25-35% of polytetrafluoroethylene, 15-20% of polyacrylonitrile, 5-10% of polyphenyl thioether and 1-5% of rare-earth oxide. The preparation method comprises the following steps: pulverizing, mixing, relieving stress and rolling. The prepared space material has excellent mechanical strength, toughness, tensile strength and compression strength. By adding the rare-earth oxides, the heat resistance, corrosion resistance and cosmic radiation resistance of the material are enhanced. The formed crude blank is subjected to stress relieving, thereby increasing the fatigue resistance of the material.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a material for a top plate in a space shuttle cabin and a preparation method thereof. Background technique [0002] According to relevant reports, every 1 kilogram reduction in the mass of the space vehicle can reduce the launch vehicle by 500 kilograms, and the cost of a satellite launch can reach tens of millions of dollars. The high cost factor makes the material used for the top plate of the space shuttle cabin light in weight and high in performance. With the rapid development of the aerospace industry, the requirements for materials are becoming more and more stringent. The level of development and application of new materials in a country reflects the level of national defense and scientific research to a large extent. Therefore, many countries put the level of new materials Development and application are placed in an important position in scientific research. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08L27/18C08L33/20C08L81/02C08K3/22B29C43/58
CPCC08L79/085B29C43/58B29C2043/5808B29C2043/5816C08L2201/08C08L2205/035C08L27/18C08L33/20C08L81/02C08K2003/2213
Inventor 王少平
Owner HUIAN TAIDA TRADING CO LTD