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

A method for preparing high-strength carbon nanotube films using thiol-alkene click reaction

A carbon nanotube film, olefin click technology, applied in the direction of carbon nanotubes, nanocarbons, etc., can solve the problems of large difference in axial and radial properties, discrete properties, and large discreteness, and improve strength and performance stability. , Improve the density and strength, the effect of mild reaction conditions

Active Publication Date: 2020-01-24
SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Since the discovery of carbon nanotubes (CNTs) by Iijima in 1991, important achievements have been made in the regulation of its microstructure (length, diameter, wall number), macro-scale preparation, performance and dispersion technology, especially the high density of a single CNT. Tensile strength (100-200GPa) and high conductivity (10 6 S / cm) characteristics make CNT films show excellent potential in the fields of flexible electrode materials, conductive films and smart textiles, but they have not been used on a large scale. Large discrete and unstable
However, there are still obvious interfaces between the CNT tubes of the physical modification method, the interaction between the CNT tubes is weak, and the difference between the axial and radial properties is large, which is not conducive to load transfer and electrical conductivity, while chemical modification such as strong acid will destroy the CNT microstructure and Loss of electrical conductivity, difficulty in uniform functionalization, discrete and unstable performance

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
  • A method for preparing high-strength carbon nanotube films using thiol-alkene click reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 A kind of method utilizing mercaptan-alkene click reaction to prepare high-strength carbon nanotube film, its steps are as follows:

[0032] Diethylene glycol di(3-mercaptopropionate) 10g (DEMP), 0.005g 2-methyl-1-[4-(methylthio)phenyl]-2-(4-morpholine Base)-1-acetone and 5g tetrahydrofuran are mixed uniformly to form a mixed solution; under room temperature, 0.1g of a carbon nanotube film with a thickness of 20-25 microns is soaked in the above mixed solution for 30 minutes; then the carbon nanotube film is taken out and placed in the At room temperature, irradiate it with a UV lamp with a power of 3000W for 20 minutes to carry out the thiol-alkene click reaction; wash the residues on the surface of the carbon nanotube film after irradiation twice with chloroform, and remove the residues not involved in the click reaction. The removal of mercaptans, etc.; the rinsed carbon nanotube film was dried in a vacuum oven at 60°C for 1.5 hours, and then the dried f...

Embodiment 2

[0033] Embodiment 2 A kind of method utilizing mercaptan-alkene click reaction to prepare high-strength carbon nanotube film, its steps are as follows:

[0034] 5g tris (2-hydroxyethyl) isocyanurate tris (3-mercaptopropionic acid) ester (THMP), 0.03g p-aminopropiophenone and 10g dioxane are mixed uniformly to form a mixed solution; under room temperature conditions, Soak 0.1g of a carbon nanotube film with a thickness of 20-25 microns in the above mixed solution for 5 minutes; then take out the carbon nanotube film, and at room temperature, use a UV lamp with a power of 800W to illuminate it for 40 minutes to carry out Thiol-alkene click reaction; wash the residues on the surface of the carbon nanotube film after irradiation with methyl ethyl ketone three times to remove thiols that did not participate in the click reaction; place the washed carbon nanotube film at 80°C Dry in a vacuum oven for 2 hours, then carry out mechanical rolling (distance between rollers is 20 microns)...

Embodiment 3

[0035] Embodiment 3 A kind of method utilizing mercaptan-alkene click reaction to prepare high-strength carbon nanotube film, its steps are as follows:

[0036]Mix 1g of trimethylolpropane tris(3-mercaptopropionate) (TMMP), 0.01g of 2-hydroxy-2-methyl-1-phenyl-1-propanone and 1g of acetone to form a mixed solution; , soak 0.1g of a carbon nanotube film with a thickness of 20-25 microns in the above mixed solution for 20 minutes; then take out the carbon nanotube film, and at room temperature, use a UV lamp with a power of 1500W to illuminate it for 60 minutes, Carry out the thiol-alkene click reaction; wash the residue on the surface of the carbon nanotube film after irradiation with acetone twice to remove the thiols that did not participate in the click reaction; place the rinsed carbon nanotube film at 40°C Dry in a vacuum oven for 1 hour, then carry out mechanical rolling (distance between rollers is 20 microns) 3 times to the dried film to obtain a high-strength carbon na...

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
hydroxyl valueaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of CNTs (carbon nano tubes), and particularly discloses a method for preparing a high-strength CNT film through a mercaptan-olefin click reaction. The method comprises steps as follows: (1), mercaptan, a photoinitiator and an organic solvent are mixed uniformly, and a mixed solution is formed; (2), the CNT film is soaked in the mixed solution at the room temperature for 5-30 min; (3), the CNT film is taken out, and irradiated with 800-3000 W ultraviolet at the room temperature for 20-60 min for the mercaptan-olefin click reaction; (4), residues on the surface of the CNT film are washed by an organic solvent, and mercaptan which is not involved in the click reaction is removed; (5), the CNT film is dried in a vacuum oven at the temperature of 40-80 DEG C, the dried film is subjected to mechanical rolling, and the high-strength CNT film is obtained. According to the method, reaction conditions are mild, the efficiency is high, the process is simple, and the CNT film is enhanced remarkably, low in cost, widely applied and suitable for large-scale preparation and application.

Description

technical field [0001] The invention belongs to the technical field of carbon nanotubes, and specifically discloses a method for preparing a high-strength carbon nanotube film by utilizing mercaptan-alkene click reaction. Background technique [0002] Since the discovery of carbon nanotubes (CNTs) by Iijima in 1991, important achievements have been made in the regulation of its microstructure (length, diameter, wall number), macro-scale preparation, performance and dispersion technology, especially the high density of a single CNT. Tensile strength (100-200GPa) and high conductivity (10 6 S / cm) characteristics make CNT films show excellent potential in the fields of flexible electrode materials, conductive films and smart textiles, but they have not been used on a large scale. The discreteness is large and unstable. [0003] CNT films are mainly composed of Sp 2 and Sp 3 Composed of hybrid carbon atoms, its polarity is low, the interaction between tubes is weak, and its ...

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 Patents(China)
IPC IPC(8): C01B32/16
CPCC01B32/16
Inventor 张道洪段骞梁潇李婷王秋凡苗孟河
Owner SOUTH CENTRAL UNIVERSITY FOR NATIONALITIES
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