High-elasticity conductive fiber and preparation method thereof

A conductive fiber and high elasticity technology, applied in the manufacture of conductive/antistatic filaments, fiber chemical characteristics, single-component polyamide artificial filaments, etc., can solve the problem of affecting the conductivity of composite materials, difficult to uniformly disperse, and easy to bundle and other problems, to achieve the effect of repeated stretching conductivity, easy processing and low cost

Active Publication Date: 2013-03-06
THE HONG KONG POLYTECHNIC UNIV
View PDF3 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, in the prior art, due to the van der Waals force between each other, carbon nanotubes are easy to bundle in polymer mat

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0047] The preparation method of the highly elastic conductive fiber of the present invention is based on the fact that the carbon nanotubes pretreated by 1-butyl-3-methylimidazole (ionic liquid) can be well dispersed in the polymer matrix, and at the same time, the , The carbon nanotubes can be ordered in the polymer matrix to form a stable conductive network. Utilizing the excellent electrical and thermal conductivity properties of carbon nanotubes can effectively improve the safety and high power characteristics of the highly elastic conductive fiber. At the same time, because carbon nanotubes have good mechanical strength, they can obtain excellent electrical properties and can also improve the mechanical properties of the prepared conductive fibers. The conductive fiber prepared by the preparation method of the present invention has the advantages of low resistivity, good hand feeling, repeatable stretching and long lasting conductivity.

[0048] Without wishing to be bound...

Example Embodiment

[0077] Example 1-Melt Blending Method

[0078] Pretreatment of carbon nanotubes

[0079] Multi-walled carbon nanotubes are used and pretreated by dry mixing. First, the multi-walled carbon nanotubes and 1-butyl-3-methylimidazole (ionic liquid) are mixed according to the proportions and then added to a high-speed mixer. The temperature is raised to 90-100°C and stirred at a high speed of 4000 rpm for 10 minutes. Then, it is adjusted to 1000 rpm and stirred for 30 minutes to obtain pretreated multi-walled carbon nanotubes.

[0080] Preparation of multi-walled carbon nanotube / polymer blend masterbatch

[0081] Put 10 parts of pretreated multi-walled carbon nanotubes and 90 parts of polyurethane masterbatch into the high-speed mixer according to weight percentage, and stir the pretreated multi-walled carbon nanotubes and polyurethane masterbatch at 1000 rpm Evenly. Then, the obtained multi-walled carbon nanotube / polyurethane blend masterbatch was added to a twin-screw extruder, the ex...

Example Embodiment

[0085] Example 2-Solution spinning method

[0086] Pretreatment of carbon nanotubes

[0087] Multi-walled carbon nanotubes are used and pretreated by dry mixing. First, the multi-walled carbon nanotubes and 1-butyl-3-methylimidazole (ionic liquid) are mixed according to the proportions and then added to a high-speed mixer. The temperature is raised to 90-100°C and stirred at a high speed of 4000 rpm for 10 minutes. Then, it is adjusted to 1000 rpm and stirred for 30 minutes to obtain pretreated multi-walled carbon nanotubes.

[0088] Preparation of multi-walled carbon nanotube / polymer blend solution

[0089] Put 90 parts of polyurethane masterbatch into the high-speed mixer according to weight percentage, then add 900 parts of tetrahydrofuran solution, and continuously stir at 1000 rpm for 24 hours to fully dissolve the polyurethane masterbatch in the tetrahydrofuran solution. Then add 10 parts of pretreated multi-walled carbon nanotubes to the above polyurethane solution, stir at ...

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
Diameteraaaaaaaaaa
Lengthaaaaaaaaaa
Diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses high-elasticity conductive fiber comprising the raw materials of: carbon nano-tubes, ionic liquid, and a high-elasticity polymer. A weight ratio of the carbon nano-tubes to the high-elasticity polymer is 1:8-20, and a weight ratio of the carbon nano-tubes to the ionic liquid is 4-6:1. The invention also discloses a preparation method of the high-elasticity conductive fiber. The high-elasticity conductive fiber provided by the invention has both the high conductivity of carbon nano-tubes, and the mechanical properties of polymer fiber. Also, the high-elasticity conductive fiber can be uniaxially stretched by 100% with no substantial change in electrical properties.

Description

technical field [0001] The invention relates to the field of conductive polymers, in particular to a highly elastic conductive fiber and a preparation method thereof. Background technique [0002] With the increase in size and weight of electronic devices, the research on highly elastic conductive polymers has attracted widespread attention, and is expected to become a replacement product for traditional metal conductive materials. It can be used to prepare larger solar cells, sensors, electric actuators and other new flexible electronic products. Compared with traditional metal conductive materials, highly elastic conductive polymers have the advantages of being stretchable, foldable, and can be transformed into any complex curve shape, etc., and can be applied to any curved surface and the activities of large-area electronic products parts. [0003] At present, the preparation methods of conductive polymers mainly include the following three types: [0004] 1. Post-trea...

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): D01F1/09D01F6/94D01F6/90D01F6/46
Inventor 尚颂民曾炜陶肖明
Owner THE HONG KONG POLYTECHNIC UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap