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Preparation method of composite conductive fiber

A composite conductive and fiber technology, used in the manufacture of conductive/antistatic filaments, complete sets of equipment for the production of artificial threads, melt spinning, etc. Mechanical and electrical properties, easy-to-operate effects

Inactive Publication Date: 2017-09-22
朱燕萍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The obtained composite conductive fiber has good mechanical properties and electrical conductivity, but its conductivity still needs to be further improved to meet the needs of the existing technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1) Mix activated graphene, carboxylated carbon nanotubes (single-walled carbon nanotubes with a diameter of 10nm), silver nanowires (45nm in diameter) and silver quantum dots in a mass ratio of 1:10:25:3 to obtain Conductive filler; mixing polypropylene slices and polyethylene slices at a mass ratio of 60:1 to obtain a polymer precursor;

[0041] Mix the conductive filler and the polymer precursor, and then add it to a high-speed mixer at a speed of 2500rpm and mix for 8 minutes. Add the mixture to the twin-screw extruder at a uniform speed and mix and extrude it. The extruded material is quenched in a water bath at 48°C and pulled Sliced ​​into the granulator;

[0042] 2) spread the composite pellets prepared in step 1 on a stainless steel tray, place them in an oven at 85°C and dry them for 10 hours, and spin the pellets in a vertical melt spinning machine to obtain as-spun filaments;

[0043] 3) The as-spun silk is dried, oiled, drawn by drafting rollers, and wound ...

Embodiment 2

[0046] 1) Mix activated graphene, carboxylated carbon nanotubes (single-walled carbon nanotubes with a diameter of 15nm), silver nanowires (30nm in diameter) and silver quantum dots in a mass ratio of 1:10:20:5 to obtain Conductive filler; mix polypropylene slices and polyethylene slices at a ratio of 100:1 to obtain a polymer precursor;

[0047] Mix the conductive filler and the polymer precursor, and then add it to a high-speed mixer at 800rpm and mix for 25 minutes. Add the mixture to the twin-screw extruder at a uniform speed and mix and extrude it. The extruded material is quenched in a water bath at 50°C and pulled Sliced ​​into the granulator;

[0048] 2) spread the composite pellets prepared in step 1 on a stainless steel tray, place them in an oven at 85°C and dry them for 10 hours, and spin the pellets in a vertical melt spinning machine to obtain as-spun filaments;

[0049] 3) The as-spun silk is dried, oiled, drawn by drafting rollers, and wound on a bobbin to obt...

Embodiment 3

[0052] 1) Mix activated graphene, carboxylated carbon nanotubes (single-walled carbon nanotubes with a diameter of 8nm), silver nanowires (70nm in diameter) and silver quantum dots in a mass ratio of 1:10:40:2 to obtain Conductive filler; mix polypropylene slices and polyethylene slices at a ratio of 1:1 to obtain a polymer precursor;

[0053] Mix the conductive filler and the polymer precursor, then add it to a high-speed mixer with a speed of 800rpm and mix for 30 minutes, then add the mixture to the twin-screw extruder at a uniform speed and mix and extrude it. The extruded material is quenched in a water bath at 40°C and pulled Sliced ​​into the granulator;

[0054] 2) spread the composite pellets prepared in step 1 on a stainless steel tray, place them in an oven at 85°C and dry them for 10 hours, and spin the pellets in a vertical melt spinning machine to obtain as-spun filaments;

[0055] 3) The as-spun silk is dried, oiled, drawn by drafting rollers, and wound on a bo...

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Abstract

The invention belongs to the technical field of preparing functional fiber, and particularly relates to a preparation method of composite conductive fiber. According to the preparation method, activated graphene, a carboxylated carbon nanotube, a silver nanowire and silver quantum dots are used as conductive fillers; and the slices of polypropylene and polyethylene are used as base materials which are subjected to blending granulation and melt spinning to prepare the composite conductive fiber. The composite conductive fiber provided by the invention not only has very good mechanical properties, but also has excellent electrical conductivity; the tensile strength of single fiber is 8.0-10.0cN / dtex; and the conductivity of the fiber is 1,100-1,500S / m. The preparation method is simple in process, green and environmentally friendly, and is suitable for industrial production, and has a broad application prospect.

Description

technical field [0001] The invention belongs to the technical field of preparation of functional fibers, relates to the technical field of surface modification of new carbon materials such as graphene and carbon nanotubes and blending processing with high polymers, and specifically relates to the preparation of polypropylene by doping activated graphene / carbon nanotubes / Method of high-density polyethylene composite conductive fiber. Background technique [0002] Graphene was discovered by Konstantin Novoselov and Andre Geim of the University of Manchester in the laboratory in 2004 (Novoselov, K.S.&Geim, A.K.etal.Electricfieldeffectivelythinatomicallythincarbonfilms.Science, 306,666-669,2004), its excellent mechanical, electrical and thermal properties have attracted the attention of material scientists. Graphene is a planar two-dimensional film material composed of carbon atoms with sp2 hybrid orbitals forming a hexagonal honeycomb lattice and only one carbon atom thick. ...

Claims

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Application Information

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IPC IPC(8): D01F8/06D01F6/46D01F1/09D01D13/00D01D5/08
CPCD01F8/06D01D5/08D01D13/00D01F1/09D01F6/46
Inventor 朱燕萍
Owner 朱燕萍
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