Fabrication method of carbon nanotube shading cover

Abstract

A fabrication method of a carbon nanotube shading cover comprises the following steps of (1) determining a stray light ratio elimination index of the shading cover; (2) determining the position and the size of a baffle plate inside the shading cover; (3) modeling the size, the shape and the surface diffuse reflection characteristic inside the shading cover to obtain a light ratio elimination simulation calculation result, comparing the light ratio elimination simulation calculation result with the index, and entering the next step if the requirement is met; (4) designing the shading cover and a baffle plate structure inside the shading cover which can be fixedly arranged and can stand an emission mechanical environment; (5) carrying out modal analysis on the emission mechanical environment of the designed shading cover to obtain the shading cover conforming to the mechanical performance required by emission; (6) mechanically processing the shading cover by using titanium alloy; (7) determining a growth process parameter of a carbon nanotube; and (8) growing a carbon nanotube coating layer on the inner wall of the shading cover obtained through mechanical processing, and completing fabrication. With the method disclosed by the invention, the problems of inadequate stray light elimination capability, relatively large size and relatively heavy weight of a black paint elimination shading cover can be solved.

Description

technical field [0001] The invention relates to a method for preparing a light shield used for star sensors and other imaging equipment to eliminate stray light such as the sun. Background technique [0002] The carbon nanotube material was first discovered in the world in 1991. It is an isomer of carbon. More than a thousand times the diameter, called carbon nanotubes. Carbon nanotube structures have single-wall and multi-wall structures. Due to the strong light absorption ability of the carbon nanotube coating, it is currently recognized as the blackest material in the world. Therefore, if it can be grown on the inner wall of the light shield or the light-blocking ring surface, the absorption efficiency of the light shield can be greatly improved, and it can also A light shield with a simplified and compact structure achieves the same stray light elimination capability as in the past, thereby greatly reducing the size and weight of the light shield, which is very necessa...

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art, to provide a method for preparing a light shield using carbon nanotubes as a light-absorbing material, to solve the problem of the growth process of carbon nanotubes on a metal substrate, and to provide carbon nanotubes The general preparation process of the tube hood, so as to solve the problems of insufficient stray light elimination ability and large size and weight of the black paint shading hood in the past, and drive the improvement of the design level and manufacturing process of the hood

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