Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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

Inactive Publication Date: 2017-06-09
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although carbon nanotube arrays can achieve more than 99% absorption of ultraviolet, visible light, near-infrared and far-infrared light, the preparation of carbon nanotube arrays requires high precision, limited sample size, and poor processability. These shortcomings also exist in its application. a lot of restrictions

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]Step 1. Dissolve 0.647g resorcinol in 50mL deionized water, stir until the solution is clear, add 0.871mL formaldehyde solution, stir for 20min, then add 0.147mL sodium carbonate solution, stir for 20min, then add 20mL deionized water, Obtain reaction solution, under stirring condition, add 30mL modified chitosan copper complex solution dropwise in reaction solution, continue to stir 30min, obtain mixed solution; The density 1.066g / mL of described formaldehyde solution, formaldehyde mass percent is 38%; The amount concentration of the substance of described sodium carbonate solution is 0.2mol / L;

[0037] Step 2, sealing the mixed solution, and placing it in an incubator at 80°C for 30 days to obtain a wet gel;

[0038] Step 3, placing the obtained wet gel in a trifluoroacetic acid (3vol.%) / acetone (97vol.%) solution for acidification and aging for 7 days;

[0039] Step 4, place the wet gel after the acidification and aging treatment in a container with fresh acetone for...

Embodiment 2

[0044] Step 1. Dissolve 1.941g resorcinol in 50mL deionized water, stir until the solution is clear, add 2.614mL formaldehyde solution, stir for 20min, then add 0.441mL sodium carbonate solution, stir for 20min, then add 20mL deionized water, Obtain reaction solution, under stirring condition, add 30mL modified chitosan copper complex solution dropwise in reaction solution, continue to stir 30min, obtain mixed solution; The density 1.066g / mL of described formaldehyde solution, formaldehyde mass percent is 38%; The molar concentration of the substance of the sodium carbonate solution is 0.2mol / L; The preparation method of the modified chitosan copper complex solution adopts the method described in Example 1;

[0045] Step 2, sealing the mixed solution, and placing it in an incubator at 80°C for 30 days to obtain a wet gel;

[0046] Step 3, placing the obtained wet gel in a trifluoroacetic acid (3vol.%) / acetone (97vol.%) solution for acidification and aging for 7 days;

[0047]...

Embodiment 3

[0051] Step 1. Dissolve 2.588g resorcinol in 50mL deionized water, stir until the solution is clear, add 3.485mL formaldehyde solution, stir for 20min, then add 0.588mL sodium carbonate solution, stir for 20min, then add 20mL deionized water, Obtain reaction solution, under stirring condition, add 30mL modified chitosan copper complex solution dropwise in reaction solution, continue to stir 30min, obtain mixed solution; The density 1.066g / mL of described formaldehyde solution, formaldehyde mass percent is 38%; The molar concentration of the substance of the sodium carbonate solution is 0.2mol / L; The preparation method of the modified chitosan copper complex solution adopts the method described in Example 1;

[0052] Step 2, sealing the mixed solution, and placing it in an incubator at 80°C for 30 days to obtain a wet gel;

[0053] Step 3, placing the obtained wet gel in a trifluoroacetic acid (3vol.%) / acetone (97vol.%) solution for acidification and aging for 7 days;

[0054]...

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
densityaaaaaaaaaa
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

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.

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

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
Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/05
CPCC01P2004/03C01P2006/10C01P2006/12C01P2006/60
Inventor 朱家艺赵海波付志兵杨曦袁磊米睿张厚琼王朝阳吴卫东张林
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com