Nitrogen-doped MXene-coated HCF electromagnetic composite wave-absorbing material and preparation method thereof
An electromagnetic composite and wave-absorbing material technology, applied in electrical components, magnetic field/electric field shielding, antennas, etc., can solve the problems of limited pore volume and high filling ratio, and achieve the effect of excellent electromagnetic wave absorption ability
Active Publication Date: 2022-04-29
TONGJI UNIV
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, most MOF-derived adsorbents have a solid structure with limited pore volume and high filling ratio
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
preparation example Construction
[0036] A method for preparing a nitrogen-doped MXene@HCF electromagnetic composite absorbing material in this embodiment comprises the following steps:
[0037] Step 1, put Ti 3 Add AlCN to lithium fluoride and concentrated hydrochloric acid solution to ensure that the raw material ratio (mass ratio) is as follows: Ti3AlCN: lithium fluoride: hydrochloric acid (12 mol / liter) = 1: (0.95~1.05): (10~12), at room temperature Under stirring 5min, obtain the first solution;
[0038] Step 2, transfer the first solution to an oil bath, keep it warm at 40°C-50°C for 24 hours, then cool to room temperature, and then perform liquid centrifugation to obtain the first precipitate after centrifugation;
[0039] Step 3, wash the first precipitate with deionized water until the pH value of the centrifuged upper layer liquid is greater than 5, then transfer it into a gas washing bottle, and place the gas washing bottle in an ultrasonic machine, in argon, 0 ° C ~ 4 ° C After ultrasonication fo...
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
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention provides a nitrogen-doped MXene (at) HCF electromagnetic composite wave-absorbing material and a preparation method of the nitrogen-doped MXene (at) HCF electromagnetic composite wave-absorbing material. According to the preparation method, a layered nitrogen-doped MXene material is obtained through a chemical etching method, then hollow ZIF-67 is prepared by utilizing the moderate coordination and etching effect of cyanuric acid, and then Co-ZIF of a hollow structure is obtained through heat treatment. And finally, regulating and controlling the electrostatic self-assembly ratio of the composite material to obtain the nitrogen-doped MXene-coated HCF electromagnetic composite wave-absorbing material. The preparation method disclosed by the invention has the characteristics of being stable, controllable, simple and easy to operate, and the nitrogen-doped MXene-coated HCF electromagnetic composite wave-absorbing material prepared by the preparation method has excellent electromagnetic wave absorbing capacity.
Description
technical field [0001] The invention belongs to the field of electromagnetic absorbing materials, and in particular relates to a nitrogen-doped MXene@HCF electromagnetic composite absorbing material and a preparation method thereof. Background technique [0002] Today, with the rapid popularization of electronic and smart devices, electromagnetic pollution seriously affects human health and the normal functions of sensitive electronic devices and systems. The application of microwave absorber is an effective way to solve the problem of electromagnetic pollution. Although the traditional solid electromagnetic wave absorber has a good electromagnetic wave absorption effect, it inevitably has disadvantages such as weak absorption capacity, high density, and narrow absorption band. Therefore, it is very necessary to propose the design concept of new electromagnetic wave absorbing materials. The new-generation absorber requires the integration of electromagnetic wave functions,...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00H01Q17/00
CPCH05K9/0081H01Q17/00
Inventor 陆伟蔡磊
Owner TONGJI UNIV