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

Nanorod-shaped antimonous sulfide electromagnetic wave absorbing material, absorber, preparation method and application

A technology of antimony trisulfide and nano-rods, which is applied in chemical instruments and methods, polycrystalline material growth, electrical components, etc., can solve the problems of increasing the reflection of electromagnetic waves by materials, reducing the efficiency of electromagnetic wave absorption, and insufficient loss capacity, etc., to achieve Unique microscopic morphology, improved bulk polarization relaxation loss capability, and increased direct contact effect

Active Publication Date: 2021-02-09
SHANDONG UNIV
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although dielectric absorbing materials have been studied in depth, the inventors believe that they still have inherent performance defects: high-loss carbon materials and conductive high polymers will cause high dielectric loss due to their high electrical conductivity. However, the impedance mismatch increases the material’s reflection of electromagnetic waves; while metal oxides or sulfides can maintain good impedance matching characteristics, but their loss capability is insufficient, which will eventually reduce the material’s absorption efficiency of electromagnetic waves.
On the other hand, many current methods for preparing electromagnetic wave absorbing materials with high efficiency, such as liquid phase exchange method, vapor phase deposition method, etc., are expensive and cumbersome to operate, and mainly stay in the laboratory research stage.

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
  • Nanorod-shaped antimonous sulfide electromagnetic wave absorbing material, absorber, preparation method and application
  • Nanorod-shaped antimonous sulfide electromagnetic wave absorbing material, absorber, preparation method and application
  • Nanorod-shaped antimonous sulfide electromagnetic wave absorbing material, absorber, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0039] In a third aspect, the present invention provides a method for preparing the nanorod-shaped antimony trisulfide electromagnetic wave absorbing material, comprising the following steps:

[0040] Solvothermal reaction of mixed solution of antimony source and sulfur source to prepare nanorod-like Sb 2 S 3 Electromagnetic wave absorbing materials;

[0041] The antimony source is antimony chloride (SbCl 3 ), antimony nitrate (Sb(NO 3 ) 3 ) or antimony acetate (Sb(CH 3 COO) 3 ) in any one or a mixture of two or more;

[0042] The sulfur source is sodium sulfide (Na 2 S), potassium sulfide (K 2 S), thioacetamide (C 3 h 7 NO 2 S) or L-cysteine ​​(C 3 h 7 NO 2 S).

[0043] This preparation method utilizes a special sulfur source as a reactant and a surfactant to regulate the solution surface properties of the reaction environment at the same time, so that Sb 2 S 3 In the process of formation and growth, the [130] direction is the preferential growth direction of...

Embodiment 1

[0052] A nanorod-like Sb 2 S 3 The preparation method of the filled electromagnetic wave absorber comprises the following steps:

[0053] (1) 2.5mmol SbCl 3 , 5.0 mmol C 3 h 7 NO 2 S and 5.0 mmol Na 2 S was successively dissolved in 50.0 mL of deionized water and stirred continuously for 3 h until a homogeneous solution was obtained.

[0054] (2) Transfer all the solution in step (1) to a polytetrafluoroethylene-lined steel reaction kettle, and heat to 200° C. for 2 h. The obtained solid product was centrifuged, washed several times with ethanol / water mixture, and then dried under vacuum at 60° C. for 12 h.

[0055] (3) After the solid paraffin is melted at a temperature above 75° C., mixed with an equal mass of the solid product in step (2), stirred rapidly, cooled to room temperature, and pressed into an absorber.

Embodiment 2

[0057] A nanorod-like Sb 2 S 3 The preparation method of the filled electromagnetic wave absorber comprises the following steps:

[0058] (1) 2.5mmol Sb(CH3COO) 3 and 10.0 mmol C 3 h 7 NO 2 S was successively dissolved in 50.0 mL of deionized water and stirred continuously for 3 h until a homogeneous solution was obtained.

[0059] (2) Transfer all the solution in step (1) to a polytetrafluoroethylene-lined steel reaction kettle, and heat to 200° C. for 4 h. The obtained solid product was centrifuged, washed several times with ethanol / water mixture, and then dried under vacuum at 60° C. for 12 h.

[0060] (3) After the solid paraffin is melted at a temperature above 75° C., mixed with an equal mass of the solid product in step (2), stirred rapidly, cooled to room temperature, and pressed into an absorber.

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
diameteraaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a nanorod-shaped antimony trisulfide electromagnetic wave absorbing material, an absorber, a preparation method and application. The nanorod-shaped Sb2S3 electromagnetic wave absorbing material is a staggered and stacked single-crystal nanorod; the crystal orientation of the Sb2S3 nanorod is [130], the Sb2S3 nanorod is orthorhombic system stibnite, and Sb2S3 grows in the [130] direction in the crystallization process to form the nanorod. The prepared Sb2S3 nanorod realizes the application of Sb2S3 in the field of electromagnetic wave absorption for the first time, and has the characteristics of high absorption strength, wide absorption frequency band, thin matching thickness, strong corrosion resistance and the like; and meanwhile, the preparation method disclosed by the invention is simple and feasible, low in cost and better in industrial application prospect.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic wave absorbing materials, and in particular relates to a nanorod-shaped antimony trisulfide electromagnetic wave absorbing material, absorber, preparation method and application. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] In recent years, with the rapid development of computer technology and electronic communication technology, as well as the popularization of electronic products, the increasing electromagnetic energy density will inevitably seriously pollute today's electromagnetic environment, which will not only affect the normal operation of precision electronic equipment. Inte...

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 Applications(China)
IPC IPC(8): C30B29/46C30B29/60C30B7/14H05K9/00
CPCC30B7/14C30B29/46C30B29/60H05K9/0081
Inventor 刘久荣乔靖刘伟吴莉莉王凤龙汪宙
Owner SHANDONG 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