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Composite structure electric conductive fiber coated with carbon nano tubes and preparation method of same

A conductive fiber, carbon nanotube technology, applied in the direction of improved hand fiber, conductive/antistatic filament manufacturing, fiber processing, etc. Good softness effect

Inactive Publication Date: 2017-07-14
JIANGSU ZJA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a composite structure conductive fiber coated with carbon nanotubes and its preparation method, and solve the problem that the carbon nanotube coating layer has a relatively small adhesion and adhesion on the fiber surface. The problem is to make carbon nanotubes firmly (or firmly) attached (or bonded or connected) to the surface of the fiber, and the conductive fiber can maintain high electrical conductivity for a long time, and has excellent softness, processability, touch (or texture) or feel), tactile, lightweight properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] The typical preparation method of the conductive fiber matrix is ​​described as follows:

[0034] (1) Preparation of conductive masterbatch: Pre-knead conductive carbon black, additives and fiber-forming high polymer chips, and then melt blend, extrude, water-cool, and pelletize to obtain carbon black with a conductive agent content of 10-40wt% conductive masterbatch;

[0035] (2) Composite spinning: The fiber-forming high polymer chips and conductive masterbatch are melted and transported by screw extruder respectively, and distributed to each spinneret hole of the composite spinneret by metering pump, and then injected from the spinneret hole, Finally, it can be cooled and solidified by side blowing, drafted, oiled, guided and wound;

[0036] The non-conductive part slices used in it are dried separately in advance, and the moisture content is controlled below 30-100ppm. The drying process can be fluidized bed drying, drum drying, continuous drying in nitrogen atmosp...

Embodiment 1

[0057] Embodiment 1: The preparation method of the composite structure polyester conductive fiber coated with carbon nanotubes, comprises the following steps:

[0058] 1. Preparation of carbon black polyester skin-core outer conductive fiber:

[0059](1) Preparation of conductive masterbatch: 5.5 kg of carbon black conductive agent, 150 g of aluminate coupling agent, 600 g of polyester wax dispersant, 20 g of 1010 and DLTP compound antioxidant, and 150 g of magnesium stearate Carry out pre-kneading with 13.6 kilograms of PBT polyester chips, the kneading temperature is 120 ℃, and the kneading time is 60min; Then, the conductive masterbatch with carbon black conductive agent content of 27.5wt% is obtained through twin-screw extruder melt blending, fully Dry and set aside.

[0060] (2) Spinning: The dried 80 kg non-conductive part PET slices and the above-mentioned conductive masterbatch are melted and conveyed by the screw extruder respectively. Accounting for 25wt% of the to...

Embodiment 2

[0072] Embodiment 2: the preparation method of the composite structure nylon conductive fiber of coating carbon nanotube, comprises the steps:

[0073] 1. Preparation of carbon black polyamide 6 (PA6) skin-core outer conductive fiber:

[0074] (1) Preparation of conductive masterbatch: 6 kg of carbon black conductive agent, 100 g of aluminate coupling agent, 600 g of polyester wax dispersant, 30 g of 1010 and DLTP' compound antioxidant, 150 g of magnesium stearate gram and 13.2 kilograms of PA6 slices were pre-kneaded, the kneading temperature was 120°C, and the kneading time was 40 minutes; then, a conductive masterbatch with a carbon black conductive agent content of 30wt% was prepared through twin-screw extruder melt blending, and fully dried for later use .

[0075] (2) Spinning: The dried 80 kg non-conductive part PA6 slices and the above-mentioned conductive masterbatch are melted and conveyed by the screw extruder respectively. Accounting for 25wt% of the total weight...

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Abstract

The invention relates to a composite structure electric conductive fiber coated with carbon nano tubes and a preparation method of same. The electric conductive fiber includes an electric conductive fiber base body and a conductive enhancing layer. The conductive enhancing layer is formed by coating the outer surface of the electric conductive fiber base body with the carbon nano tubes as a conductive agent. The electric conductive fiber base body is an electric conductive fiber of which the surface is provided with a carbon black conductive portion. The conductive enhancing layer accounts for 5-30% of the total weight of the composite structure electric conductive fiber. The coverage ratio of the conductive enhancing layer is not less than 60% relative to the whole surface of the electric conductive fiber base body. The thickness of the conductive enhancing layer is 0.1-5 [mu]m. The electric conductive fiber is produced by ultrasonically treating a coating liquid under an ultrasonic environment and meanwhile impregnating the electric conductive fiber base body in the dispersed coating liquid so as to coat the surface of the electric conductive fiber base body with the dispersed coating liquid to form the coating layer. The carbon nano tubes are uniformly and firmly adhered to almost the whole surface of the electric conductive fiber which also has excellent conductivity and flexibility, so that the electric conductive fiber can be used for manufacturing smart wearable fabrics and fibrous sensors.

Description

technical field [0001] The invention relates to a conductive fiber with a composite structure coated with carbon nanotubes and a preparation method thereof, belonging to the technical field of conductive fibers. Background technique [0002] It is well known and experienced that synthetic fibers have been widely used in many applications, including clothing, bedding, interior decoration fibers, industrial materials, and medical materials. However, products using synthetic fibers tend to generate static electricity (or electrostatic charge) due to friction or the like. The generation of static electricity will damage the appearance of the product by attracting dust, or cause electric shock or unpleasant touch to the human body due to discharge. In addition, the generation of static electricity sometimes causes damage to electronic products due to sparks at the time of electrostatic discharge, or ignition and explosion of flammable substances. [0003] In order to solve the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/74D01F6/92D01F6/90D01F1/09D01D5/34D06M101/32D06M101/34
CPCD06M11/74D01D5/34D01F1/09D01F6/90D01F6/92D06M2101/32D06M2101/34D06M2200/50
Inventor 周焕民
Owner JIANGSU ZJA NEW MATERIAL
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