Unlock instant, AI-driven research and patent intelligence for your innovation.

High-strength carbon nanotube film, its preparation method and application

A carbon nanotube film and technology of carbon nanotubes, applied in the direction of carbon nanotubes, nanocarbons, chemical instruments and methods, etc., can solve the problems of not being able to transmit loads well and the mechanical properties of carbon nanotube films not being achieved, etc. To achieve the effects of large-scale application, suitable for large-scale production, and high mechanical properties

Active Publication Date: 2018-11-09
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in traditional carbon nanotube films, there are only weak intermolecular interactions between carbon nanotubes, so the load cannot be transmitted well when bearing a load, resulting in the mechanical properties of carbon nanotube films not reaching Theoretical expected level

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
  • High-strength carbon nanotube film, its preparation method and application
  • High-strength carbon nanotube film, its preparation method and application
  • High-strength carbon nanotube film, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] Specifically, one aspect of the present invention provides a method for preparing a carbon nanotube film with high mechanical properties. In one embodiment, it may include: dispersing carbon nanotubes in a solvent to form a uniform and stable dispersion of carbon nanotubes; then preparing the dispersion into a buffer solution, adding dopamine monomer, stirring evenly, and causing dopamine to generate Self-polymerization to form a carbon nanotube / polydopamine dispersion; finally, the dispersion is prepared into a thin film by suction filtration and other film-forming methods.

[0038] In particular, in a more typical specific embodiment, the method may include: dispersing (such as ultrasonic vibration, high-pressure homogenization or vigorous stirring) carbon nanotubes in a solvent into a uniform and stable dispersion (preferably carbon nanotubes water dispersion liquid), then the carbon nanotube dispersion liquid is formulated into a buffer solution, and the pH value of...

Embodiment 1

[0041] The preparation of embodiment 1 carbon nanotube / polydopamine film:

[0042] Under normal temperature conditions, weigh 10 parts by weight (parts by weight, the same below) of carbon nanotubes and 4 parts of polyvinylpyrrolidone, add 200 parts of deionized water, and disperse homogeneously under high pressure for 1 to 60 minutes (preferably 30 minutes), to obtain carbon nanotubes dispersed liquid.

[0043] Under normal temperature conditions, weigh 121 parts of trishydroxymethylaminomethane, add it to the carbon nanotube dispersion, add 37% hydrochloric acid, adjust the pH value of the dispersion to 7-9, preferably 8.5, and then add 0.5- 10 parts of dopamine hydrochloride, stirred for 1-6 hours (preferably 2 hours).

[0044] Obtain a semi-wet carbon nanotube / polydopamine film by vacuum filtration, dry it in air at room temperature for more than 48 hours, peel off the obtained carbon nanotube / polydopamine film from the filter paper after drying, and dry it at 20°C~200°C,...

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
concentrationaaaaaaaaaa
thicknessaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high-strength carbon nanotube film, its preparation method and application. In an implementation case, the preparation method includes: dispersing carbon nanotubes in a selected solvent to form a uniform and stable carbon nanotube dispersion; adding a buffer substance to the carbon nanotube dispersion to form a buffer system, and then adding The dopamine monomers are uniformly mixed, and the dopamine is self-polymerized to form a carbon nanotube / polydopamine dispersion; the carbon nanotube / polydopamine dispersion is subjected to film-forming treatment to obtain the carbon nanotube film. The film comprises a network skeleton structure composed of carbon nanotubes and polydopamine distributed in the network skeleton structure. The carbon nanotube thin film of the invention has a uniform shape, a minimum thickness of 1 μm, high mechanical strength, simple and controllable preparation process, low cost and wide application prospects.

Description

technical field [0001] The invention relates to a carbon nanotube film, more specifically, to a composite carbon nanotube film with high strength and other mechanical properties, its preparation method and application. Background technique [0002] In 1991, Lijima of the Japanese scientific community discovered carbon nanotubes (Carbon Nanotube, CNT) for the first time. Carbon nanotubes are a tubular conjugated structure composed of sp2 hybridized carbon atoms. The special structure of carbon nanotubes makes them have excellent mechanical, electrical, optical and other functional properties, and has attracted extensive research by researchers at home and abroad. In recent years, with the in-depth research on carbon nanotubes and their nanomaterials, carbon nanotubes and related materials have been widely used in many fields, such as structural reinforcement materials, luminescent materials, sewage treatment materials, sensors, solar cells Wait. [0003] Carbon nanotube fil...

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): C01B32/168C01B32/159C08L79/02C02F1/44
Inventor 吕卫帮曲抒旋李清文
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI