A preparation method of carbon aerogel with broad-spectrum anti-reflection structure

A carbon airgel and anti-reflection technology, which is applied in the preparation/purification of carbon, etc., can solve the problems of high precision preparation of carbon nanotube arrays, limited sample size, poor processability, etc., and achieve excellent broad-spectrum anti-reflection absorption characteristics, easy to control, light weight, wide spectrum, anti-reflection and light-absorbing properties
CN105645382BInactive Publication Date: 2017-06-09LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
Publication Date
2017-06-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a preparation method of a wide-spectrum-antireflection-structure carbon aerogel. According to the method, the total mass percent of the resorcinol and formaldehyde and the resorcinol / sodium carbonate mass ratio are regulated, and the gelation time, the heating rate in the carbonization process and the sintering temperature are controlled, thereby obtaining the wide-spectrum-antireflection-structure carbon aerogel. The density range of the carbon aerogel prepared by the method is 20-60 mg / cm<3>, the specific area range is 1783-967 m<2> / g, the light reflectivity within the 400-2000nm ultraviolet-visible-near-infrared band is respectively lower than 0.3%, and the absorbance is respectively greater than 99.7%. The carbon aerogel can be used as a novel super black material, and is applicable to the fields of aerospace detecting sensors, solar photo-thermal converters, national defense stealth technology and the like.
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Description

technical field

[0001] The invention belongs to the field of preparation of porous carbon materials, and in particular relates to a preparation method of carbon airgel with a wide-spectrum anti-reflection structure. Background technique

[0002] An ideal black material can absorb all the light irradiated on its surface like a "black hole" without transmission and reflection. Although the ideal state cannot be achieved in reality, since Kirchhoff expounded the concept of black body and Planck created the law of black body radiation Since then, ultra-black materials have attracted more and more attention for their importance to scientific research in different fields. Ultra-black materials can effectively reduce adverse reflections and absorb stray light to a maximum extent, thereby achieving efficient absorption of light. This feature makes ultra-black materials widely used in stray light suppression devices, aerospace detection sensors, solar photothermal conversion Devices...

Claims

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