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

Multi-hole fuzz-ball-shaped NiFe/C/Na2MoO4 composite wave absorbing material and preparation method thereof

A composite wave-absorbing material and composite material technology, which is applied in the field of porous pompom NiFe/C/Na2MoO4 composite wave-absorbing material and its preparation, can solve the problems of insufficient wave-absorbing ability and single shape of wave-absorbing material, and achieve enhanced electromagnetic Attenuation ability, enhanced microwave attenuation ability, good impedance matching effect

Active Publication Date: 2020-04-17
SOUTHEAST UNIV
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of porous fluffy NiFe / C / Na 2 MoO 4 Composite wave-absorbing material and its preparation method, the composite material solves the technical problems of MXene-derived wave-absorbing material with single shape and insufficient wave-absorbing ability, and obtains good impedance matching and high-efficiency electromagnetic attenuation ability, so as to achieve 2- Thin, light, wide, strong and other absorbing characteristics in the 18 GHz frequency range, it is an ideal choice for microwave absorbing materials

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

Embodiment 1

[0026] Step 1, prepare Mo 2 CT x Material

[0027] Measure 20 mL of 40% HF aqueous solution in a polytetrafluoroethylene reactor, weigh Mo 2 GaC precursor 2.0 g, under the condition of magnetic stirring speed of 100 r / min at room temperature, the Mo 2 The GaC precursor was slowly added into HF aqueous solution within 1.0 min, the reaction vessel was sealed, and the stirring time lasted for 24 h. Add deionized water to the obtained product, centrifuge at 3500 rpm, and centrifuge for 3 minutes each time. During the last centrifugation, the pH of the supernatant was around 7.0. The obtained product was dried in a vacuum oven at 60°C.

[0028] Step 2, prepare pompom Na 2 MoO 4 Material

[0029] At room temperature, weigh 2 g of sodium hydroxide and dissolve it in 40 mL of deionized water, add 1 mL of 30% v / v hydrogen peroxide to make a mixed solution, and mix the Mo prepared in step 1 2 CT x Weigh 0.1 g and evenly disperse it into the mixed solution, stir it magnetically...

Embodiment 2

[0036] Step 1, prepare Mo 2 CT x Material

[0037] Measure 15 mL of 40% HF aqueous solution in a polytetrafluoroethylene reactor, weigh Mo 2 GaC precursor 1.2 g, under the condition of magnetic stirring speed of 200 r / min at room temperature, the Mo 2 The GaC precursor was slowly added into HF aqueous solution within 2.0 min, the reaction vessel was sealed, and the stirring time lasted for 24 h. Add deionized water to the obtained product, centrifuge at 3500 rpm, and centrifuge for 3 minutes each time. During the last centrifugation, the pH of the supernatant was around 7.0. The obtained product was dried in a vacuum oven at 60°C.

[0038] Step 2, prepare pompom Na 2 MoO 4 Material

[0039] At room temperature, weigh 2.4 g of sodium hydroxide and dissolve it in 60 mL of deionized water, add 1 mL of 30% v / v hydrogen peroxide to make a mixed solution, and mix the Mo prepared in step 1 2 CT x Weigh 0.15 g and evenly disperse it into the mixed solution, stir it magnetica...

Embodiment 3

[0046] Step 1, prepare Mo 2 CT x Material

[0047] Measure 15 mL of 40% HF aqueous solution in a polytetrafluoroethylene reactor, weigh Mo 2 GaC precursor 2.0 g, under the condition of magnetic stirring speed of 300 r / min at room temperature, the Mo 2 The GaC precursor was slowly added into HF aqueous solution within 3.0 min, the reaction vessel was sealed, and the stirring time lasted for 48 h. Add deionized water to the obtained product, centrifuge at 3500 rpm, and centrifuge for 3 minutes each time. During the last centrifugation, the pH of the supernatant was around 7.0. The obtained product was dried in a vacuum oven at 60°C.

[0048] Step 2, prepare pompom Na 2 MoO 4 Material

[0049] At room temperature, weigh 2 g of sodium hydroxide and dissolve it in 50 mL of deionized water, add 2 mL of 30% v / v hydrogen peroxide to make a mixed solution, and mix the Mo prepared in step 1 2 CT x Weigh 0.2 g and evenly disperse it in the mixed solution, stir it magnetically f...

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
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a multi-hole fuzz-ball-shaped NiFe / C / Na2MoO4 composite wave absorbing material. The wave absorbing material comprises multi-hole fuzz-ball-shaped Na2MoO4 and NiFe / C nanometer cubes. The NiFe / C nanometer cubes are uniformly distributed on the surface of the multi-hole fuzz-ball-shaped Na2MoO4. According to the method, the fuzz-ball-shaped Na2MoO4 deriving from Mo2CTx is usedas a matrix, the NiFe / C nanometer cubes deriving from NiFe-MOF are used as load layers, the obtained composite material solves the problems that a wave absorbing material deriving from MXene is single in morphology and the wave absorbing ability is insufficient, the good impedance match and the efficient electromagnetism damping ability are obtained, thus the wave absorbing characteristics of thinness, lightness, width, strength and the like within the 2-18 GHz frequency range are achieved, and the material is an ideal selection of a microwave absorbing material.

Description

technical field [0001] The invention belongs to the technical field of wave-absorbing materials, in particular to a porous pompom NiFe / C / Na 2 MoO 4 Composite wave-absorbing material and its preparation method. Background technique [0002] With the continuous advancement of electronic information technology, electromagnetic waves have penetrated into various fields. At the same time, electromagnetic radiation has interfered with people's lives and production activities and has seriously affected them. Therefore, the development of efficient electromagnetic absorbing materials is of great significance for both military and civilian applications. Ideal absorbing materials need to have the characteristics of thin, light, wide and strong absorption, and also need to have good environmental stability, multi-band stealth and other advantages to adapt to the development of new absorbing materials. [0003] Metal-organic frameworks (MOFs) materials can obtain metal / porous carbon ...

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): B22F9/20B22F1/02B22F1/00C01G39/00
CPCB22F9/20C01G39/00B22F1/07B22F1/054B22F1/17
Inventor 何曼周钰明王瑞丽许正建彭昊陈曦康逸凡
Owner SOUTHEAST UNIV
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