A kind of skin material of high-altitude aerostat and preparation method thereof

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...

AI Technical Summary

Problems solved by technology

The barrier property of described high barrier layer has been improved to a certain extent relative to the common film as barrier layer, but needs special preparation, and process is also not easy to master (due to the SiO of different particle size and content 2 Nanoparticles have an effect on the isolation performance)

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