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

Carbon nanotube-aluminum nitride wave-absorbing agent, preparation method thereof, carbon nanotube-aluminum nitride composite wave-absorbing material and application of carbon nanotube-aluminum nitride composite wave-absorbing material

A technology of composite wave-absorbing materials and carbon nanotubes, applied in the field of wave-absorbing materials, can solve the problems of large surface energy, affecting the uniform dispersion and agglomeration of carbon nanotubes, and achieve the effect of simple operation and suitable for industrial production

Active Publication Date: 2020-05-29
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small diameter and large surface energy of carbon nanotubes, they are easily entangled and agglomerated, which seriously affects the uniform dispersion of carbon nanotubes in polymers, resulting in the absorption performance of the absorbing material being affected to a certain extent. influences

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
  • Carbon nanotube-aluminum nitride wave-absorbing agent, preparation method thereof, carbon nanotube-aluminum nitride composite wave-absorbing material and application of carbon nanotube-aluminum nitride composite wave-absorbing material
  • Carbon nanotube-aluminum nitride wave-absorbing agent, preparation method thereof, carbon nanotube-aluminum nitride composite wave-absorbing material and application of carbon nanotube-aluminum nitride composite wave-absorbing material
  • Carbon nanotube-aluminum nitride wave-absorbing agent, preparation method thereof, carbon nanotube-aluminum nitride composite wave-absorbing material and application of carbon nanotube-aluminum nitride composite wave-absorbing material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0044] The present invention provides the preparation method of the carbon nanotube-aluminum nitride wave absorbing agent described in the above technical scheme, comprising the following steps:

[0045] The carbon nanotube, aluminum nitride and anhydrous dispersant are mixed and modified to obtain the carbon nanotube-aluminum nitride wave absorbing agent.

[0046] In the present invention, the anhydrous dispersant preferably includes N,N-dimethylformamide or absolute ethanol, more preferably N,N-dimethylformamide. In the present invention, the aluminum nitride is easily hydrolyzed with water, and the present invention uses an anhydrous dispersant as an anhydrous dispersant, which can avoid side reactions of aluminum nitride, thereby improving the absorption of carbon nanotubes-aluminum nitride. The absorbing performance of the agent. In the present invention, the ratio of the mass of the carbon nanotubes to the volume of the anhydrous dispersant is preferably 1 g: (2-4) L, m...

Embodiment 1

[0065] Add 300mL of DMF to a beaker with a capacity of 500mL, add 20mg of multi-walled carbon nanotubes (MWCNTs, mostly 5-8μm in length, 30-35nm in diameter, and about 0.06nm in wall thickness) and 0.98g of aluminum nitride, Place the beaker in an ultrasonic machine for ultrasonic dispersion for 1 hour to obtain a mixed solution; transfer the mixed solution to a round-bottomed flask, put a magnet, add a condenser tube to one side of the round-bottomed flask, and fix the experimental device in an oil bath The modification process was started in the middle, and under the condition of magnetic stirring, the temperature was raised to 130° C. at a heating rate of 3.5° C. / min, and then the modification reaction was performed for 9 hours. After the reaction, the whole experimental device was naturally cooled to room temperature, and then the round bottom flask was taken out; the obtained wave absorbing agent solution was suction filtered to obtain a solid; the solid was washed with ab...

Embodiment 2

[0067] Add 300mL of DMF to a beaker with a capacity of 500mL, add 100mg of multi-walled carbon nanotubes (mostly 5-8μm in length, 30-35nm in diameter, and about 0.06nm in wall thickness) and 1.9g of aluminum nitride in the beaker. Place in an ultrasonic machine for ultrasonic dispersion for 1.5 hours to obtain a mixed solution; transfer the mixed solution to a round-bottomed flask, put a magnet, add a condenser tube to one side of the round-bottomed flask, and fix the experimental device in an oil bath The oil bath experiment was started, and under the condition of magnetic stirring, the temperature was raised to 120° C. at a heating rate of 3.5° C. / min and then reacted for 8 hours. After the reaction, the whole experimental device was naturally cooled to room temperature, and then the round bottom flask was taken out; the obtained wave absorbing agent solution was suction filtered to obtain a solid; the solid was washed with absolute ethanol and ultrapure water in sequence, an...

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
The inside diameter ofaaaaaaaaaa
Outer diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a carbon nanotube-aluminum nitride wave-absorbing agent, a preparation method thereof, a carbon nanotube-aluminum nitride composite wave-absorbing material and an application ofthe carbon nanotube-aluminum nitride composite wave-absorbing material, and belongs to the technical field of wave-absorbing materials. The carbon nanotube-aluminum nitride wave-absorbing agent provided by the invention comprises a carbon nanotube and aluminum nitride; the surface of the carbon nanotube is coated with the aluminum nitride; the length of the carbon nanotube is 2-10 [mu]m; and themass of the carbon nanotube is 1-10% of the total mass of the carbon nanotube-aluminum nitride wave-absorbing agent. The aluminum nitride adopted by the invention has good thermal shock resistance, dielectric property and molten metal corrosion resistance; the carbon nanotube has the excellent characteristics of large specific surface area, high aspect ratio, excellent mechanical strength, outstanding dielectric property and the like; and functional groups or chemical bonds on the surface of the carbon nanotube are substituted or combined with chemical bonds in aluminum nitride, so that the dispersity of the carbon nanotube in the carbon nanotube-aluminum nitride wave-absorbing agent is improved, and the wave-absorbing performance of the carbon nanotube-aluminum nitride wave-absorbing agent is excellent.

Description

technical field [0001] The invention relates to the technical field of wave-absorbing materials, in particular to a carbon nanotube-aluminum nitride wave-absorbing agent and a preparation method thereof, a carbon nanotube-aluminum nitride composite wave-absorbing material and applications thereof. Background technique [0002] With the rapid development of modern science and technology and the development of electronic information technology in the civilian field, the derived electromagnetic radiation has caused many complex problems such as electromagnetic pollution, electromagnetic interference, information leakage, etc., hindering the development of information industry, electronics industry and other fields; For national defense construction, especially microwave electronic technology and advanced radar, as an effective means to improve the survival, penetration and depth capabilities of weapon systems, has become one of the hotspots in the world's military powers competi...

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): C09K3/00C01B32/168
CPCC09K3/00C01B32/168
Inventor 王廷梅马巍王齐华
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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