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Carbon nanometer tube composite fibre with high orientation and production thereof

A carbon nanotube composite, composite fiber technology, applied in fiber processing, fiber chemical characteristics, conjugated synthetic polymer rayon and other directions, can solve problems such as unfavorable mechanical properties, etc. Effect

Inactive Publication Date: 2006-03-15
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Electrospinning has been recognized as a simple and efficient technology for preparing nanofibers, but most of them produce nanofiber webs or nanofiber mats, such as the Chinese patent application number 200410017609.6, which uses a high-frequency electric field to prepare nanofibers. device, this method can use the sol-gel method, add polyvinylpyrrolidone PVP to the alcohol sol containing metal salts, and make nanofiber mats by electrospinning, which has excellent electrochemical properties, because nanofibers are random Arranged, so it is not conducive to exert its mechanical properties

Method used

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  • Carbon nanometer tube composite fibre with high orientation and production thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] ① Put the carbon nanotubes into a mixed solution of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 3:1 and disperse them ultrasonically for 5 hours, then wash and filter to obtain carbon nanotubes with carboxyl groups on the surface.

[0022] ②React carbon nanotubes containing carboxyl groups on the surface with thionyl chloride at 60°C for 24 hours. CNT-COCl is obtained.

[0023] ③ Functionalized carbon nanotubes were obtained by reacting CNT-COCl with Triton X-100 at 120°C for 24 hours.

[0024] ④ Dissolve the carbon nanotubes with Triton X-100 on the surface and polyacrylonitrile in dimethylformamide, and ultrasonically disperse for 2 hours to prepare a blended spinning solution.

[0025] ⑤ By electrospinning at a high voltage of 30kv, the highly oriented nanocomposite fibers were collected with double rows of ground electrodes with a spacing of 1 mm to prepare carbon nanotube nanocomposite fibers.

[0026] According to the determina...

Embodiment 2

[0028] ① Put the carbon nanotubes into a mixed solution of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 3:1 and disperse them ultrasonically for 5 hours, then wash and filter to obtain carbon nanotubes with carboxyl groups on the surface.

[0029] ②React the carbon nanotubes containing carboxyl groups on the surface with thionyl chloride at 75°C for 4 hours. CNT-COCl is obtained.

[0030] ③CNT-COCl reacted with polyoxyethylene (PEO-OH) at 100°C for 24 hours to obtain functionalized carbon nanotubes.

[0031] ④ The carbon nanotubes grafted with polyoxyethylene on the surface and polyurethane were dissolved in dimethylacetamide and dispersed ultrasonically for 1 hour to prepare a blended spinning solution.

[0032] ⑤ Electrospinning at a high voltage of 5kv, using three rows of ground electrodes with a spacing of 100mm to collect highly oriented nanocomposite fibers to prepare carbon nanotube nanocomposite fibers.

[0033] According to the det...

Embodiment 3

[0035] ① Put the carbon nanotubes into a mixed solution of concentrated sulfuric acid and concentrated nitric acid with a volume ratio of 3:1 and disperse them ultrasonically for 10 hours, then wash and filter to obtain carbon nanotubes with carboxyl groups on the surface.

[0036] ②React carbon nanotubes containing carboxyl groups on the surface with thionyl chloride at 60°C for 24 hours. CNT-COCl is obtained.

[0037] ③ CNT-COCl reacted with caprolactam at 250°C for 12 hours, washed and filtered to obtain functionalized carbon nanotubes.

[0038] ④ Dissolve the carbon nanotubes with nylon 6 on the surface and nylon 6 together in formic acid, and ultrasonically disperse for 1 hour to prepare a blended spinning solution.

[0039] ⑤ By electrospinning at a high voltage of 30kv, the highly oriented nanocomposite fibers were collected with double rows of ground electrodes with a spacing of 1 mm to prepare carbon nanotube nanocomposite fibers.

[0040] According to the determina...

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Abstract

The invention opens a high orientation carbon nano-pipe complex fiber, which is composed of carbon nano pipe and polymer (1: 2-1000). The process is: the pipe is dispersed by ultrasonic in the strong acid for 0.5-10h; the pipe reacts with the thionyl chloride or the diisocyanate for 4-24hrs in 60-75 Deg C.; The micro / macro molecule reacts with the COCI and the NCO for 4-24hrs in 50-250 Deg C.; Last to get the complex fiber by high voltage electrostatic spinning with the space length of the pole is 1mm-100mm.

Description

technical field [0001] The invention relates to a nanocomposite fiber and a preparation method thereof, in particular to a nanocomposite fiber based on carbon nanotubes and a preparation method thereof. Background technique [0002] Since the discovery of carbon nanotubes (CNTs) in the 1990s, it has aroused widespread interest among scientists and is a research hotspot in recent years. The research has involved the fields of chemistry, physics, biology, microelectronics, optoelectronics, and materials science. Carbon nanotubes are divided into multi-walled carbon nanotubes (MWNTs) and single-walled carbon nanotubes (SWNTs). The tube is a carbon atom through the sp 2 A cylindrical surface composed of a hexagonal plane formed by hybridization and the surrounding three carbon atoms fully bonded. But due to the existence of a certain curvature, a small part of the carbon belongs to sp 3 hybridization. Carbon nanotubes have excellent mechanical properties, with a tensile stre...

Claims

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Application Information

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IPC IPC(8): D01F8/18D01F8/04D01D5/00
Inventor 常振军张清华陈大俊
Owner DONGHUA UNIV
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