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Preparing method of polyamide conductive fiber

A technology for conductive fibers and polyamides, applied in the field of fiber materials, can solve problems such as polyamide electrostatic charge accumulation, and achieve the effects of controllable morphology, large specific surface area, and improved electrical conductivity

Inactive Publication Date: 2019-12-03
宁波宏翌能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] Technical problem to be solved by the present invention: Aiming at the problem that polyamide is prone to electrostatic charge accumulation, a preparation method of polyamide conductive fiber is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Take 10% silver nitrate solution, ascorbic acid, oleic acid, absolute ethanol, 5% ammonia water and deionized water, mix ascorbic acid and deionized water, heat and stir, and adjust the pH value with solution, add oleic acid and absolute ethanol to the reaction solution, and continue to stir for 20 minutes to obtain a mixed solution. Add a mass fraction of 10% silver nitrate solution and a mass fraction of 5% ammonia water to the mixed solution, stir magnetically, and filter to obtain The filter residue was washed three times with deionized water and absolute ethanol respectively, and dried in an oven with a temperature of 60°C to constant weight, cooled to room temperature, ground and passed through a 200-mesh sieve to obtain ultra-fine silver powder; Mix graphite and ultra-fine silver powder at a ratio of 1:1 and place them in a ball mill for ball milling to obtain a mixed powder. Put the mixed powder in a tube furnace, heat-preserve and sinter, and cool to room temper...

Embodiment 2

[0036] Take 10% silver nitrate solution, ascorbic acid, oleic acid, absolute ethanol, 5% ammonia water and deionized water, mix ascorbic acid and deionized water, heat and stir, and adjust the pH value with solution, add oleic acid and absolute ethanol to the reaction solution, and continue to stir for 25 minutes to obtain a mixed solution, add a mass fraction of 10% silver nitrate solution and a mass fraction of 5% ammonia water to the mixed solution, stir magnetically, and filter to obtain Filter residue, wash the filter residue 4 times with deionized water and absolute ethanol respectively, and place in an oven at 65°C to dry to constant weight, cool to room temperature, grind and pass through a 210-mesh sieve to obtain ultra-fine silver powder; Mix graphite and ultra-fine silver powder at a ratio of 1:1 and place them in a ball mill for ball milling to obtain a mixed powder. Put the mixed powder in a tube furnace, heat-preserve and sinter, and cool to room temperature to ob...

Embodiment 3

[0038] Take 10% silver nitrate solution, ascorbic acid, oleic acid, absolute ethanol, 5% ammonia water and deionized water, mix ascorbic acid and deionized water, heat and stir, and adjust the pH value with solution, add oleic acid and absolute ethanol to the reaction solution, and continue to stir for 30 minutes to obtain a mixed solution, add a mass fraction of 10% silver nitrate solution and a mass fraction of 5% ammonia water to the mixed solution, stir magnetically, and filter to obtain Filter residue, wash the filter residue 5 times with deionized water and absolute ethanol respectively, and place in an oven at 70°C to dry to constant weight, cool to room temperature, grind and pass through a 220-mesh sieve to obtain ultra-fine silver powder; Mix graphite and ultra-fine silver powder at a ratio of 1:1 and place them in a ball mill for ball milling to obtain a mixed powder. Put the mixed powder in a tube furnace, heat-preserve and sinter, and cool to room temperature to ob...

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Abstract

The invention relates to a preparing method of a polyamide conductive fiber, and belongs to the technical field of fiber materials. With graphite as the carbon source, graphene grows on the surface ofsuperfine silver powder through an in-situ chemical vapor deposition method to serve as the conductive dopant, and with polyamide as the raw material, the polyamide conductive fiber is prepared through electrostatic spinning; the graphene is a single-atom-layer two-dimensional crystal material formed by connecting carbon atoms through sp2 hybridization, and due to the special structure, the graphene has high conductivity which other materials cannot have; the prepared conductive dopant is doped into the polyamide, and the polyamide conductive fiber is prepared through electrostatic spinning;when the content of the conductive dopant in the fiber reaches a certain value (percolation threshold), a three-dimensional mesh-shaped structure starts to be formed, a conductive channel is formed, and the percolation phenomenon happens; at the moment, the fiber resistivity is suddenly reduced, and therefore a polymer becomes a semiconductor or a conductor.

Description

technical field [0001] The invention relates to a preparation method of polyamide conductive fiber, which belongs to the technical field of fiber materials. Background technique [0002] Polyamide (nylon) is a wide variety of polymer materials, and it is the most used of the five major engineering plastics. Polyamide has excellent mechanical properties, and strong wear resistance, corrosion resistance and self-lubrication, and is widely used in various fields. However, polyamide is an insulator, and it is easy to generate static charge accumulation, which brings many disasters to production and processing, and has a negative impact on daily life. Therefore, it is very necessary to modify the electrical conductivity of polyamide materials. [0003] Conductive fibers usually refer to resistivity less than or equal to 10 8 Ω·m functional fibers (under 20°C, 65% RH conditions), conductive fibers are widely used in antistatic clothing, dustproof work clothes, and also have bro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/90D01F1/09B22F9/24B22F1/02C23C16/26C23C16/44D01D5/00D01D1/02
CPCD01F6/90D01F1/09B22F9/24C23C16/26C23C16/4417D01D5/0015D01D1/02B22F1/16
Inventor 章宏森
Owner 宁波宏翌能源科技有限公司
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