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Conductive polyethylene fiber and preparation method thereof

A polyethylene fiber, polyethylene technology, applied in the manufacture of conductive/antistatic filament, single-component polyolefin rayon, chemical post-treatment of synthetic polymer rayon, etc., can solve problems such as poor performance, and achieve The effect of reversible electrochromic capability

Pending Publication Date: 2022-04-08
CHINESE TEXTILE ACAD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the performance of the conductive polyethylene fiber in the prior art is poor, therefore, it is necessary to provide a conductive polyethylene fiber with better performance, and provide a preparation method for the conductive polyethylene fiber

Method used

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  • Conductive polyethylene fiber and preparation method thereof
  • Conductive polyethylene fiber and preparation method thereof
  • Conductive polyethylene fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A polyethylene resin with a viscosity-average molecular weight of 4.5 million is dispersed in decahydronaphthalene (the mass percent of polyethylene is 7%), and after 4 hours and 95° C. of swelling, add aniline monomer (the quality of the aniline monomer is 15% of the polyethylene resin quality). %), mixed and dissolved by twin-screws, transported by a booster pump, metered by a metering pump, and then extruded through a spinneret to obtain jelly filaments. The jelly yarn enters the oxidation bath to cool and solidify, and the pH value is adjusted with hydrochloric acid in the oxidation bath to make it stable at 1.5 during the whole spinning process. The molar ratio was stable at 1.2:1. After the jelly silk comes out of the oxidation bath, it enters the tunnel to remove the solvent (the wind in the tunnel is 60° C. nitrogen) to obtain solid silk. After the solid silk passes through the oxidation bath, it goes through the primary drafting at 138°C and 4 times; the secon...

Embodiment 2

[0047]Polyethylene resin with a viscosity-average molecular weight of 1,000,000 is dissolved in decahydronaphthalene (the mass percent of polyethylene is 8%), after 4h, 80 ℃ of swelling, add aniline monomer (the quality of aniline monomer is 20% of the polyethylene resin quality). %), then through twin-screw mixing and dissolving, transported and metered by a booster pump and a metering pump, and then extruded through a spinneret to obtain jelly filaments. The jelly yarn enters the oxidation bath to cool and solidify, and the pH value is adjusted with hydrochloric acid in the oxidation bath to make it stable at 2 during the whole spinning process. The molar ratio was stable at 1.2:1. After the jelly silk comes out of the oxidation bath, it enters the tunnel to remove the solvent (the wind in the tunnel is 60° C. nitrogen) to obtain solid silk. After the solid silk passes through the oxidation bath, it undergoes a 138°C, 4-fold first-stage drafting, then passes through the oxi...

Embodiment 3

[0049] Polyethylene resin with a viscosity-average molecular weight of 5,000,000 is dissolved in white oil (the mass percentage of polyethylene relative to white oil is 6%, and the mass percentage of aniline monomer relative to polyethylene is 20%), and then through twin-screw mixing and dissolving, It is conveyed and measured by a booster pump and a metering pump, and then extruded through a spinneret to obtain jelly filaments. The jelly silk enters the extraction tank to remove the solvent. The extraction agent is dichloromethane, and then enters the oxidation bath. The pH value is adjusted with hydrochloric acid in the oxidation bath, and it is stabilized at 2 during the whole spinning process. Potassium chromate, its molar ratio to aniline monomer in the fiber is stable at 1.2:1. After the jelly silk comes out of the oxidation bath, it enters the tunnel to remove the solvent (the wind in the tunnel is 60° C. nitrogen) to obtain solid silk. After the solid silk passes thro...

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Abstract

The invention provides a conductive polyethylene fiber and a preparation method thereof, and belongs to the technical field of textile materials. A layer of continuous or discontinuous polyaniline particles or film is arranged in and / or on the surface of the conductive polyethylene fiber, and polyaniline accounts for 1%-30% of the mass percentage of polyethylene. The method comprises the following steps: preparing polyethylene with the viscosity average molecular weight value range of 200,000-8,000,000 into a spinning fluid; the spinning fluid is extruded after being metered, and gel filaments are obtained; carrying out post-treatment on the gel silk to obtain polyethylene fibers; performing oxidation and acid doping on the polyethylene fibers to obtain conductive polyethylene fibers; wherein in the implementation process of one or more of the first three steps, aniline monomers are added, so that a layer of continuous or discontinuous polyaniline particles or films are arranged in and / or on the surface of the conductive polyethylene fiber, and the conductive polyethylene fiber prepared by the method is high in strength, high in modulus and resistant to acid, alkali and salt corrosion, and has good mechanical properties under the induction of external bias voltage. And the color can be reversibly changed.

Description

technical field [0001] The invention relates to the technical field of textile materials, in particular to a preparation method of conductive polyethylene fibers. Background technique [0002] Conductive polyethylene refers to a conductive composite material that uses polyethylene as a matrix material and conductive fillers. Polyethylene is a common low-priced thermoplastic polymer material. It has good compatibility with carbon black. It is a relatively dry conductive matrix plastic. It is often compounded with a variety of conductive materials by melt mixing molding. The formed conductive compound is often used as Antistatic material of construction. It can also be combined with carbon fiber to enhance the mechanical strength; when the amount of carbon fiber added reaches a certain level, the composite material also has good electrical conductivity. However, the performance of the conductive polyethylene fiber in the prior art is poor. Therefore, it is necessary to provi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/46D01F11/06D01F1/09
Inventor 丁金友李方全孙玉山孔令熙李晓俊程金龙苏自强
Owner CHINESE TEXTILE ACAD