Laminated Mo2CTx/nitrogen-doped carbon micron-nanometer hybridized compound wave-absorbing material and preparation method thereof

A composite wave-absorbing material, nitrogen-doped carbon technology, applied in the field of wave-absorbing materials, can solve problems such as low density, achieve the effects of overcoming poor compatibility, good etching effect, and enhancing the ability to attenuate electromagnetic waves

Active Publication Date: 2019-01-11
SOUTHEAST UNIV
View PDF9 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of laminated Mo 2 CT x Nitrogen-doped carbon micro-nano hybrid composite absorbing material and its preparation method, the obtained micro-nano hybrid composite absorbing material overcomes the ...

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

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0026] Step 1, prepare Mo 2 CT x carrier material

[0027] Measure 12 mL of 1.0 mol / L etchant aqueous solution in the polytetrafluoroethylene reactor, weigh the Mo of the MAX phase 2 GaC precursor 1.0 g, under the condition of magnetic stirring speed of 100 r / min at room temperature, the Mo 2 GaC precursor slowly added NH within 2.0 min 4 HF 2aqueous solution, the reaction kettle was sealed, and the stirring time continued for 5 h. Deionized water was added to the obtained product, and centrifuged at 3500 rpm for 5 min each time. During the last centrifugation, the pH of the supernatant was around 7.0. Subsequently, absolute ethanol was added, centrifuged twice under the same conditions, and dried in a vacuum oven at 60 °C.

[0028] Step 2, prepare Mo 2 CT x / PANI hybrid composite material

[0029] At room temperature, the Mo prepared in step 1 2 CT x Weigh 0.2 g in 40 mL of deionized water and disperse ultrasonically for 0.5 h. After being uniformly dispersed, th...

example 2

[0034] Step 1, prepare Mo 2 CT x carrier material

[0035] Measure 24 mL of 1.0 mol / L etchant aqueous solution in the polytetrafluoroethylene reactor, weigh the Mo of the MAX phase 2 GaC precursor 1.0 g, under the condition of magnetic stirring speed of 200 r / min at room temperature, the Mo 2 GaC precursor slowly added NH within 4.0 min 4 HF 2 aqueous solution, the reaction kettle was sealed, and the stirring time continued for 5 h. Deionized water was added to the obtained product, and centrifuged at 3500 rpm for 5 min each time. During the last centrifugation, the pH of the supernatant was around 7.0. Subsequently, absolute ethanol was added, centrifuged twice under the same conditions, and dried in a vacuum oven at 60 °C.

[0036] Step 2, prepare Mo 2 CT x / PANI hybrid composite material

[0037] At room temperature, the Mo prepared in step (1) 2 CT x Weigh 0.3 g in 50 mL of deionized water and disperse ultrasonically for 0.75 h. After being uniformly dispersed...

example 3

[0042] Step 1, prepare Mo 2 CT x carrier material

[0043] Measure 36 mL of 1.0 mol / L etchant aqueous solution in the polytetrafluoroethylene reactor, weigh the Mo of the MAX phase 2 GaC precursor 2.0 g, under the condition of magnetic stirring speed of 300 r / min at room temperature, the Mo 2 GaC precursor slowly added NH within 6.0 min 4 HF 2 aqueous solution, the reaction kettle was sealed, and the stirring time continued for 7 h. Deionized water was added to the obtained product, and centrifuged at 3500 rpm for 5 min each time. During the last centrifugation, the pH of the supernatant was around 7.0. Subsequently, absolute ethanol was added, centrifuged twice under the same conditions, and dried in a vacuum oven at 60 °C.

[0044] Step 2, prepare Mo 2 CT x / PANI hybrid composite material

[0045] At room temperature, the Mo prepared in step 1 2 CT x Weigh 0.4 g in 60 mL of deionized water and disperse ultrasonically for 1.0 h. After being uniformly dispersed, t...

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
Return lossaaaaaaaaaa
Maximum reflection lossaaaaaaaaaa
Login to view more

Abstract

The invention discloses a laminated Mo2CTx/nitrogen-doped carbon micron-nanometer hybridized compound wave-absorbing material and a preparation method thereof. According to the micron-nanometer hybridized compound wave-absorbing material, laminated Mo2CTx is taken as a carrier, and the surface of laminated Mo2CTx and the space among layers of laminated Mo2CTx are loaded with a nitrogen-doped carbon nanomaterial. Graphene-similar two-dimensional laminated Mo2CTx is taken as a carrier of the wave-absorbing material for the first time, and meanwhile, the nitrogen-doped carbon nanomaterial prepared through the pyrolysis of a conducting polymer is compounded with Mo2CTx for the first time so as to prepare the micron-nanometer hybridized compound wave-absorbing material, so that the deficiency that a single component is insufficient in wave-absorbing capacity is overcome, adjustable impedance matching and increased dielectric loss are realized, and the low-density, strong-absorptivity, low-thickness and wide-broadband wave-absorbing property is realized in a frequency range of 2GHz-18GHz.

Description

technical field [0001] The invention belongs to the technical field of wave-absorbing materials, in particular to a laminated Mo 2 CT x Nitrogen-doped carbon micro-nano hybrid composite absorbing material and preparation method thereof. Background technique [0002] After entering the 21st century of information explosion, the vigorous development of electronic information technology has made electromagnetic waves widely used in many fields, and the resulting electromagnetic radiation pollution and interference problems are attracting more and more attention. Absorbing materials help to purify and improve the current electromagnetic environment, so the development of efficient absorbing materials is an important research topic in the military and civilian fields. An ideal absorbing material needs to have the characteristics of thin, light, wide, and strong absorption performance, and at the same time, it needs to meet the multi-functional characteristics of strong stabilit...

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): C09K3/00H05K9/00
CPCC09K3/00H05K9/0081
Inventor 何曼周钰明仝远廖强王瑞丽
Owner SOUTHEAST UNIV
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