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Skin material of high-altitude aerostat and preparation method of skin material

A technology of skin materials and aerostats, which is applied in the field of aerospace materials, can solve the problems of isolation performance impact and difficult process control, etc., and achieve the effects of low helium gas permeability, difficult transfer, and good weather resistance

Active Publication Date: 2014-04-02
EAGLES MEN AERONAUTIC SCI & TECH GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The barrier performance of the high barrier layer has been improved relative to the ordinary film as a barrier layer, but special preparation is required, and the process is not easy to master (due to different particle sizes and contents of SiO 2 Nanoparticles have an effect on isolation properties)

Method used

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  • Skin material of high-altitude aerostat and preparation method of skin material
  • Skin material of high-altitude aerostat and preparation method of skin material
  • Skin material of high-altitude aerostat and preparation method of skin material

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Embodiment Construction

[0031] A specific embodiment of the skin material suitable for high-altitude aerostats provided by the present invention is that the weather-resistant layer, the barrier layer, the load-bearing layer and the welding adhesive layer (or welding layer for short) are glued together from the outside to the inside. It has the characteristics of high strength, light weight, low helium gas permeability and good weather resistance.

[0032] The weather-resistant layer of the high-altitude aerostat skin material is located on the outermost layer of the skin material to resist high-altitude strong ultraviolet radiation and ozone corrosion. The selected material is polyvinylidene fluoride (PVDF) film or ethylene-tetrafluoroethylene copolymer Polymer (ETFE) film has excellent weather resistance, wrinkle resistance, abrasion resistance, helium resistance and service life. The corona-treated film is used as a weather-resistant layer and is also easy to bond with other film layers.

[0033] ...

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PUM

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Abstract

The invention discloses a skin material of a high-altitude aerostat and a preparation method of the skin material. The skin material is a high-barrier, high-strength and low-surface-density material which is formed by gluing and compounding a weather resistant layer, a double-layer single-faced aluminum plated high-barrier membrane, a force bearing layer and a welding layer. The weather resistant layer of the skin material of the high-altitude aerostat has high weather resistance; with the double-layer single-faced aluminum plated high-barrier membrane, the high barrier property and low absorptivity-emissivity ratio to the solar spectrum of the material are realized, and the damage of visible light on the skin material can be effectively prevented; an aromatic polyester fiber fabric layer is used as the force bearing layer and realizes good mechanical performance of the skin material after being compounded; the aerostat can be processed and molded through the high-frequency welding function of the welding layer. According to the skin material disclosed by the invention, a multiple membrane compounding process is employed, which is simple and capable of realizing excellent fit of membrane and membrane as well as membrane and cloth. The produced skin material is light in weight and high in strength, and also high in helium barrier property; the areal density of the skin material is only 144g / m<2>; therefore, the weather resistance and high-altitude service life of the high-altitude aerostat can be well improved.

Description

technical field [0001] The invention belongs to the field of aerospace materials, and in particular relates to a skin material for a high-altitude aerostat and a preparation method thereof. Background technique [0002] The high-altitude aerostat is a new type of near-space multifunctional flying platform with propulsion device, controllable flight, and relying on static lift to stay in the air. The working altitude is about 20Km above sea level. The flight characteristics of aerostats determine that they have broad application prospects in the fields of military reconnaissance, space early warning, communication relay and space detection, so they are widely favored by scientists from all over the world. However, the high-altitude working environment of the aerostat is very harsh: the temperature is low (the lowest temperature is about -55°C), the temperature difference between day and night is large; the density of the atmosphere is only 1 / 14 of that of the ground; ultravio...

Claims

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Application Information

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IPC IPC(8): B32B27/02B32B27/06B32B27/30B32B27/36B32B27/20B32B15/082B32B15/09B32B15/14B32B7/12B32B37/06B32B37/12
Inventor 郭齐红张丽娇魏成霖王丽莎杨永强林康杜圣超
Owner EAGLES MEN AERONAUTIC SCI & TECH GRP
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