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A kind of preparation method of polyacrylonitrile-based high-strength conductive fiber

A polyacrylonitrile fiber, polyacrylonitrile-based technology, applied in the direction of fiber type, fiber treatment, fiber chemical characteristics, etc., can solve the problem of unsatisfactory conductivity of conductive PAN fiber, poor strength of conductive PAN fiber, and shedding of conductive layer And other problems, to achieve the effect of good spinnability, high strength, good conductivity and durability

Active Publication Date: 2018-09-04
JILIN ACRYLIC FIBERS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the conductivity of this conductive PAN fiber is not satisfactory, and its conductive layer will partially or even completely fall off when stored in hot and humid weather for a certain period of time or under alkaline conditions, resulting in a decrease in conductivity or even disappearance.
And the strength of this conductive PAN fiber is not good

Method used

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  • A kind of preparation method of polyacrylonitrile-based high-strength conductive fiber
  • A kind of preparation method of polyacrylonitrile-based high-strength conductive fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] 1) Mix acrylonitrile and vinyl acetate at a mass ratio of 93:7, and then produce polyacrylonitrile fibers through dimethylacetamide wet two-step spinning production technology after aqueous phase suspension polymerization;

[0050] 2) Place polyacrylonitrile fibers in an environment of 150-170°C for high-temperature drafting to further increase the degree of fiber molecular orientation, and the drafting ratio is 1.5-2 times;

[0051] 3) Place the polyacrylonitrile fiber after high-power drafting in saturated low-pressure steam of 150-200Kpa (absolute pressure) for 38 minutes to improve the dimensional stability of the fiber;

[0052] 4) Put the polyacrylonitrile fiber in a sodium hydroxide solution with a concentration of 0.5%, remove the oil agent and impurities on the surface of the fiber, then repeatedly wash and dry with desalted water;

[0053] 5) Under a certain pressure, put the cleaned polyacrylonitrile fibers in an aqueous solution with a concentration of 2% co...

Embodiment 2

[0059] 1) Mix acrylonitrile and vinyl acetate at a mass ratio of 94:6, and then produce polyacrylonitrile fibers through dimethylacetamide wet two-step spinning production technology after aqueous phase suspension polymerization;

[0060] 2) Place polyacrylonitrile fibers in an environment of 160-170°C for high-temperature drafting to further increase the degree of fiber molecular orientation, and the drafting ratio is 1.5-2 times;

[0061] 3) Place the high-stretched polyacrylonitrile fiber in saturated low-pressure steam of 150-200Kpa (absolute pressure) for 35 minutes to improve the dimensional stability of the fiber;

[0062] 4) Put the polyacrylonitrile fibers in a sodium hydroxide solution with a concentration of 1%, remove the oil agent and impurities on the surface of the fibers, then repeatedly wash and dry with desalted water;

[0063] 5) Under a certain pressure, put the cleaned polyacrylonitrile fibers into an aqueous solution with a concentration of 4% copper sulf...

Embodiment 3

[0069] 1) Mix acrylonitrile and vinyl acetate at a mass ratio of 92:8, and then produce polyacrylonitrile fibers through dimethylacetamide wet two-step spinning production technology after aqueous phase suspension polymerization;

[0070] 2) Place polyacrylonitrile fibers in an environment of 160-170°C for high-temperature drafting to further increase the degree of fiber molecular orientation, and the drafting ratio is 1.5-2 times;

[0071] 3) Place the polyacrylonitrile fibers after high-power drafting in saturated low-pressure steam of 150-200Kpa (absolute pressure) for 40 minutes to improve the dimensional stability of the fibers;

[0072] 4) Put the polyacrylonitrile fiber in a sodium hydroxide solution with a concentration of 0.8%, remove the oil agent and impurities on the surface of the fiber, then repeatedly wash and dry with desalted water;

[0073] 5) Under a certain pressure, put the cleaned polyacrylonitrile fibers in an aqueous solution with a concentration of 3% ...

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Abstract

The invention relates to high-strength conductive fibers and particularly relates to a preparing method of a polyacrylonitrile-based high-strength conductive fiber. The method includes 1) preparing a polyacrylonitrile fiber by adopting acrylonitrile and vinyl acetate as raw materials, 2) subjecting the prepared fiber to high-temperature drafting, 3) processing the fiber subjected to high-temperature drafting in saturated low-pressure vapor, 4) putting the fiber processed in the saturated low-pressure vapor to a sodium hydroxide solution, washing and drying, 5) putting the dried fiber into an aqueous solution of a copper salt, heating to 50-60 DEG C, adding a sodium thiosulfate solution, heating to 70-80 DEG C, maintaining the temperature for 30-40 min, adding a sodium thiosulfate solution again, heating to 100-105 DEG C, and maintaining the temperature for 1-1.5 h, and 6) after the temperature maintaining is finished, washing, oiling, dehydrating and drying. The polyacrylonitrile-based high-strength conductive fiber prepared by the method is stable in conductivity, good in conductive durability and high in strength.

Description

technical field [0001] The invention belongs to high-strength conductive fibers, and in particular relates to a preparation method of polyacrylonitrile-based high-strength conductive fibers. Background technique [0002] Acrylic fiber has good warmth retention, unique hand feeling and excellent dyeing performance, and is widely used in daily life and industrial production. However, the moisture regain of acrylic fiber is low, and the volume specific resistance is 10 7 -10 11 Therefore, the antistatic effect is poor, and it is easy to accumulate static charges due to friction, and its voltage can reach more than 10kV. The generated static electricity also brings serious harm to people's production and life, which is mainly reflected in the following two aspects: 1. From the aspect of civilian use, static electricity will cause textiles to be vacuumed and stained during use, and clothing will entangle the human body to cause adhesion discomfort sense, and adversely affect h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/40D01D5/12D06M11/38D06M11/83D06M101/28
CPCD01D5/12D01F6/40D06M11/38D06M11/83D06M2101/28
Inventor 王立孙小君杜万洪李洪晨安继东徐志民闫学军施二铁张弘刘建军韩嵩柳长青马雪松王伟王万春杨永生管清旭于晓建
Owner JILIN ACRYLIC FIBERS CO LTD
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