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Method of preparing compound conductive fibers, compound conductive fibers obtained by method and application of compound conductive fibers

A technology for compounding conductive and conductive polymers, applied in the direction of fiber chemical characteristics, conductive/anti-static filament manufacturing, single-component synthetic polymer rayon, etc.

Inactive Publication Date: 2014-03-26
BEIJING INSTITUTE OF CLOTHING TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the polyacrylonitrile-based composite conductive fiber obtained in this way has certain conductivity, it still needs to be further improved.

Method used

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  • Method of preparing compound conductive fibers, compound conductive fibers obtained by method and application of compound conductive fibers
  • Method of preparing compound conductive fibers, compound conductive fibers obtained by method and application of compound conductive fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Embodiment 1—preparation of PEDOT / PSS-PAN composite conductive fiber of the present invention

[0070] At 25°C, 0.1528g of EDOT monomer, 0.3841g of sodium persulfate and 0.45ml of 1mol / L ferric chloride aqueous solution (oxidant) and 0.4138g of polystyrene sulfonate (M w =70000±5000) (dopants) were sequentially added to 20ml of distilled water, reacted for 24 hours under stirring, and then stopped stirring to obtain a dark blue PEDOT / PSS aqueous dispersion.

[0071] Take 20g of the obtained PEDOT / PSS aqueous dispersion, add 80g of water to dilute, and then add 100g of NaSCN to prepare a NaSCN aqueous solution containing PEDOT / PSS. 26 g of PAN (M w =50000±5000, M w / M n =1.3), mechanically stirred at 45-50°C for 4 hours, and vacuum defoamed for 48 hours to obtain a uniform spinning stock solution, which was recorded as spinning stock solution 1.

[0072] Get 20g of gained PEDOT / PSS aqueous dispersion, then this aqueous dispersion is dried, after drying, grind into po...

Embodiment 2

[0077] Embodiment 2—preparation of the PEDOT / PSS-PAN composite conductive fiber with acid red G as co-dopant of the present invention

[0078] At 10°C, mix 0.1528g of EDOT monomer, 2.8ml of 1mol / L ferric chloride aqueous solution (oxidant), 0.2069g of polysodium p-styrene sulfonate (M w =70000±5000) (dopant), 0.2150g of acid red G (co-dopant) and 0.0764g of polyoxyethylene laurate (Jiangsu Haian Petrochemical Plant, LAE-4) (emulsifier) ​​in turn Add it into 20ml of distilled water, react under stirring for 24h, stop stirring, and obtain a deep purple PEDOT / PSS dispersion emulsion.

[0079] Take 20g of the obtained PEDOT / PSS dispersion emulsion, add 60g of water to dilute, then add 80g of NaSCN, and prepare the NaSCN aqueous solution containing PEDOT / PSS. 23.9 g of PAN (M w =50000±5000, M w / M n =1.3), mechanically stirred at 45-50°C for 4h to dissolve, and a uniform spinning dope was obtained. The spinning stock solution was degassed in vacuum at 45-50°C for 4 days in a v...

Embodiment 3

[0084] Example 3—Preparation of the PEDOT / PSS-PAN composite conductive fiber of the present invention with Fluorescent Yellow 184 as a co-dopant

[0085] At 20°C, 0.1528g of EDOT monomer, 0.3841g of sodium persulfate and 1ml of 1mol / L ferric chloride aqueous solution (oxidant), 0.1528g of fluorescent yellow 184 (co-dopant) and 0.2069g of polyparaphenylene Sodium ethylene sulfonate (M w =70000±5000) (dopants) were sequentially added to 20ml of distilled water, reacted under stirring for 12 hours, and then stopped stirring to obtain a dark green PEDOT / PSS aqueous dispersion.

[0086] Take 20 g of the obtained PEDOT / PSS aqueous dispersion, add 40 g of water to dilute, and then add 60 g of NaSCN to prepare a NaSCN aqueous solution containing PEDOT / PSS. 17.9 g of PAN (M w =50000±5000, M w / M n =1.3), mechanically stirred at 45°C for 4h to dissolve, and degassed the spinning stock solution in a vacuum oven at 45°C for 4 days to obtain a uniform spinning stock solution without bu...

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Abstract

The invention relates to a method of preparing polyacrylonitrile-based compound conductive fibers. The method comprises the following steps: a) carrying out chemical oxidative polymerization on liquor containing a conductive polymer monomer, an oxidant and a dopant at 0-50 DEG C to obtain a doped aqueous dispersion of the conductive polymer, wherein the conductive monomer is 3, 4-ethylene dioxothiophene, aniline, pyrrole or derivatives thereof, the oxidant is selected from sodium persulfate, ammonium persulfate, ferric sulfate, ferric trichloride and p-toluenesulfonic acid, and the dopant is selected from poly-p-styrenesulfonic acid, sodium poly-p-styrenesulfonate, polyethylene sulfonate and sodium polystyrene sulfonate; and b) mixing the aqueous dispersion of the conductive polymer obtained in the step a) with polyacrylonitrile in form of the aqueous dispersion and then spinning to obtain the polyacrylonitrile-based compound conductive fibers. The invention further relates to the compound conductive fibers obtained by the method, a conductive fabric prepared from the fibers and use of the conductive fibers and the conductive fabric. The conductive fibers obtained by the method provided by the invention have improved conductivity, and the method is simple in process and easy for industrialized production.

Description

technical field [0001] The present invention relates to a method for preparing composite conductive fibers, the composite conductive fibers obtained by the method, conductive fabrics made from the conductive fibers, and uses of the conductive fibers and fabrics. Background technique [0002] Conductive fiber (electroconductive fiber) is a new fiber variety that appeared in the 1960s. It generally refers to the conductivity greater than 10 -7 Ω -1 .cm -1 of fiber. This type of fiber has good electrical conductivity and durability, especially good durable antistatic property under low humidity, so it has great uses in industrial and civil fields. [0003] The original conductive fibers were made of stainless steel with a diameter of about 8 μm. Various conductive organic synthetic fibers flourished in the 1970s, and a large number of conductive fibers of various brands and types were developed. The developed conductive fibers mainly include metal fibers, carbon composite ...

Claims

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Application Information

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IPC IPC(8): D01F6/54D01F1/09D01F1/10
Inventor 李昕赵国樑刘音
Owner BEIJING INSTITUTE OF CLOTHING TECHNOLOGY
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