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A kind of diffuse reflection structure and preparation method thereof

A technology of diffuse reflection and reflective layer, which is applied in the field of material structure, functional design and preparation, and geometric structure of diffuse reflection structure. Lightweight, easy-to-install effect

Active Publication Date: 2021-06-25
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the field of strong laser applications, the specular reflection of strong laser light on smooth surfaces makes the energy of the reflected light still high, which may cause damage to on-site personnel, equipment or the environment

Method used

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  • A kind of diffuse reflection structure and preparation method thereof
  • A kind of diffuse reflection structure and preparation method thereof
  • A kind of diffuse reflection structure and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A method for preparing a diffuse reflective structure, comprising:

[0026] (1) The aluminum metal foil substrate (aluminum-based diffuse reflection structure) is adopted, and the material design of the aluminum-based diffuse reflection structure is: the metal has an excellent shielding effect on the strong laser; the metal aluminum material has high electrical conductivity, high thermal conductivity, high Mechanical strength, low cost and other characteristics, and the low mass density of aluminum is conducive to the self-supporting of the shielding sheet; therefore, aluminum is selected as the base material of the shielding sheet.

[0027] The three-dimensional microstructure array of the aluminum-based diffuse reflection structure is designed as a honeycomb structure with regular hexagonal spherical shells periodically arranged, and its overall appearance is flat, such as figure 1 Shown; a single regular hexagonal spherical shell such as figure 2 As shown, the side...

Embodiment 2

[0034] Design and Fabrication of Aluminum-Based Multilayer Diffuse Reflection Structure

[0035] Evaporating multi-layer functional thin films on the surface of the diffuse reflection structure of the metal substrate will enrich the functions of the shielding structure and realize the radiation shielding effect in complex environments. Figure 5 An example of the design of an aluminum-based multilayer diffuse reflection structure is shown. The thicknesses of the functional layers from top to bottom are: Al reflective layer / CH absorbing layer / Al metal substrate / CH insulating layer=20nm / 10μm / 38μm / 10μm, The characteristic parameter of its repeating unit adopts the result in embodiment 1; The physical significance of each functional layer is, honeycomb structure: realize the diffuse reflection and X-ray scattering effect to infrared light, 1053nm light; Al reflective layer: reflect infrared ray, reduce infrared The influence of heating; CH absorbing layer: absorbing X-rays of the ...

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Abstract

The invention discloses a diffuse reflection structure and a preparation method thereof, comprising an ultra-thin metal foil base body, the ultra-thin metal foil base body is pressed into a three-dimensional microstructure array; the structure has the function of realizing diffuse reflection of parallel incident light , to prevent the impact of high-intensity specular reflection light on the surrounding environment. In addition, the preparation of multilayer functional films on the ultra-thin metal foil microstructure can realize the functions of absorbing and diffusely reflecting incident light, thereby greatly reducing the intensity of reflected light; the structure is low in cost, simple in process and light in weight .

Description

technical field [0001] The invention belongs to the field of metal processing and molding, coating and strong laser protection, and specifically relates to a geometric structure, material structure, functional design and preparation method of a diffuse reflection structure. Background technique [0002] Diffuse reflection refers to the phenomenon that parallel light projected on a rough surface is randomly reflected in all directions. Many objects, such as plants, walls, clothes, etc., due to the "rough" microstructure of their surface, make the normal direction of any point on the surface inconsistent, causing the parallel sunlight to be diffused in different directions after being reflected by these surfaces, So we can observe these objects from different directions. [0003] In the field of strong laser applications, the specular reflection of strong laser light on smooth surfaces makes the energy of the reflected light still high, which may cause damage to on-site perso...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B5/02
CPCG02B5/0231G02B5/0268G02B5/0284
Inventor 李兆国李晓佳张继成吴卫东
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS