Conductive fiber and its preparation method

A conductive fiber and nano-conductive technology, applied in the direction of conductive/anti-static filament manufacturing, fiber processing, single-component polypropylene artificial filament, etc., can solve large industries with long production cycles and unsuitable for continuous and high speed Production and other issues, to achieve the effect of improving production efficiency, excellent electrical conductivity, and expanding the scope of application

Inactive Publication Date: 2007-12-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the production cycle of these methods is too long, which is not suitable for continuous and high-speed large-scale industrial production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034] The present invention has designed the preparation method of described conductive fiber simultaneously, and it adopts conductive fiber formula described in the present invention and following process:

[0035] (1). Preparation of conductive masterbatch

[0036] ①. After drying the nano-conductive powder at 90-100°C, put it into a high-speed agitator, and add 2-5% of the dispersant low molecular weight polyethylene wax and 0.01% of the antioxidant in turn. ~0.1%, then add 3~10% of the coupling agent diluted with the diluent petroleum ether which is 1-3 times the amount of the coupling agent, stir at high speed for 15-30 minutes, discharge the material, and dry in a vacuum oven;

[0037] ②. Mix the above materials with the polypropylene powder in the stated proportion at high speed for 5-15 minutes, then discharge the material, then put it into a twin-screw extruder, mix and extrude, and granulate to obtain conductive polypropylene masterbatch; conductive masterbatch The...

Embodiment 1

[0047] Dry 100 parts of nano-conductive powder at 95°C, put the dried nano-conductive powder into a high-speed mixer, add 2% of low-molecular-weight polyethylene wax as a dispersant, and 0.05% of antioxidant, and spray Add 3% of coupling agent. After stirring at high speed for 20 minutes, the material is discharged and dried in a vacuum oven. Mix 100 parts of the above-mentioned materials with 400 parts of polypropylene powder at high speed for 10 minutes, then discharge the material, put it into the hopper of a twin-screw extruder, and carry out twin-screw mixed extrusion and granulation. The content of conductive powder in the masterbatch is 20%, the screw speed is 120 rpm, and the cooling temperature of the water bath is 10°C. Twin-screw composite spinning machine for spinning. Screw 1 transports PET polyester chips, and screw 2 transports conductive masterbatches, which are pre-crystallized, dried, and screw extruded respectively. Screw 1 extrusion and screw 2 extrusion...

Embodiment 2～5

[0050] Refer to Table 1 for the specific process conditions of the conductive fiber described in Examples 2-5 and the preparation method thereof. Those not involved in the table are the same as in Example 1.

[0051] The concrete technological parameter table of table 1 embodiment 2~5

[0052] Preface

[0053] Note: ■——the weight percentage of the conductive powder; ▲——the multiple of the amount of coupling agent.

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Abstract

The invention relates to a conductive fiber and its preparation method. The conductive fiber has core-skin composite structure, the core layer is polyester and the cortical layer is polypropylene with containing conductive components, the skin-core ratio is 2:8-8:2; the quality percentage formula of cortical layer is: polypropylene 70-80%, nano-conductive powder 20 - 30%; said nano-conductive powder is tin oxide doped with antimony, the average diameter is not more than 0.1 micron, the resistance value is 10 omega.cm, its surface is treated and the treatment agents includes 3 - 10% coupling agent, 2 - 5% dispersing agent and 0.01- 0.1% anti-oxidant agent, said coupling agent is mono-alkoxylation catalyst barium ester or chloropropylated methoxyl silicon alky coupling agent; said dispersing agent is low molecular polyethylene wax; said anti-oxidant agent is four[ beta -(3',5'-di- tertiary-butyl- hydroxyl phenyl) ethylformic acid] pentaerythrite ester. The preparation method first prepares conductive polypropylene parent granule according said formula in the invention, then prepares conductive fiber through melting spinning technology.

Description

technical field [0001] The invention relates to functional fiber technology, specifically a conductive fiber and a preparation method thereof, and the international patent classification number is proposed to be Int.C1.D06M 13 / 00 (2006.01). Background technique [0002] As we all know, synthetic fibers have advantages such as high strength and wear resistance that natural fibers do not have, so they are widely used in various fields. However, since synthetic fibers belong to the category of dielectrics, they have high resistance and low conductivity, so they easily accumulate static electricity. The accumulated static electricity not only makes it difficult for textile processing to proceed smoothly, but also brings a lot of inconvenience to the production field and people's life where it is applied, and even endangers life safety. Spectrum interference hazards caused by electrostatic discharge are caused by equipment malfunctions, signal loss, code errors, electronic compo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F1/09D01F6/06D01F6/62D01D5/34
Inventor 程博闻丁长坤康卫民张桂芳杨瑞玲
Owner CHINA PETROLEUM & CHEM CORP
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