Low-transmission germanium-plated solar screen, thermal control assembly and preparation method

A solar and component technology, applied in the coating and other directions, can solve the problems of reducing the solar transmittance, the high transmittance of the solar screen cannot meet the thermal control requirements, etc., and achieve the effect of high reliability requirements.

Inactive Publication Date: 2020-05-08
XIAN INSTITUE OF SPACE RADIO TECH
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, a low-transmission germanium-coated solar screen is proposed, which reduces the s

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low-transmission germanium-plated solar screen, thermal control assembly and preparation method
  • Low-transmission germanium-plated solar screen, thermal control assembly and preparation method
  • Low-transmission germanium-plated solar screen, thermal control assembly and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0031] The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0032] Such as figure 1 As shown, the specific composition of the low-transmission germanium-plated solar panel applied to spacecraft provided by the present invention includes a first germanium layer 1, a polyimide base film 2, a second germanium layer 3, a first germanium layer and a second germanium layer The thickness of the polyimide base film is less than 6μm, and the thickness of the polyimide base film is 25-100 (μm), and can be adjusted according to performance requirements. The first germanium layer and the second germanium layer are plated on the surface of the polyimide base film by a magnetron sputtering method.

[0033] The manufacturing method of the low transmission germanium-plated solar screen includes the following steps:

[0034] (1) Clean the vacuum chamber, and fix the polyimide base material in the vacuum chamber;

[0035] (2) The polyimide ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to view more

Abstract

The invention relates to a low-transmission germanium-plated solar screen, a thermal control assembly and a preparation method, which belong to the technical field of aerospace equipment. The low-transmission germanium-plated solar screen comprises a polyimide base film, wherein one side of the polyimide base film is plated with a germanium layer, and then the other side of the polyimide base filmis plated with a germanium layer. The principle of the low-transmission germanium-plated solar screen is that a vacuum magnetron sputtering coating technology is adopted to perform coating on two sides of the polyimide base film, thus the low-transmission germanium-plated solar screen with certain thermophysical properties, namely solar absorptivity (alpha), hemispherical emissivity (epsilon) andsolar transmissivity (tau) is obtained, the low-transmission germanium-plated solar screen can be used for parts, needing to reduce solar irradiation, of spacecrafts such as satellites, and the problem of temperature control after external parts of cabins of spacecrafts such as satellites are irradiated is effectively solved.

Description

technical field [0001] The invention relates to a low-transmission germanium-plated solar screen, which belongs to the technical field of aerospace equipment. Background technique [0002] The extravehicular components of the spacecraft will be in a high temperature state when they are irradiated by the sun’s rays when they are in orbit, and they will appear in a low temperature state due to environmental radiation when they enter the shadow area. This long-term alternating temperature change will have a negative impact on the performance and life of the components. Adverse effects, especially for some high-precision components, the thermal deformation caused by large temperature difference changes will seriously affect the critical dimensions of the component and have a fatal impact on its function. In order to reduce the temperature difference of the external components, it is necessary to use suitable shielding materials to reduce the energy projected by the sun on the co...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G02B1/11
CPCG02B1/11
Inventor 徐向阳王旭东张建波王波王耀霆刘曦
Owner XIAN INSTITUE OF SPACE RADIO TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap