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Conductive fiber with scabbard type structure and preparation method thereof

A conductive fiber and scabbard technology, which is applied in the field of fiber and its preparation, can solve the problems affecting the conductivity of the fiber, and achieve the effect of excellent flexibility, high strength, and easy purchase

Active Publication Date: 2014-02-26
杭州德烯科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this wet spinning technology uses surfactants and the formed fibers contain polyvinyl alcohol, which is not pure carbon nanotube fibers, which seriously affects the conductivity of the fibers.
So far, there is no general wet spinning method that can be used to simultaneously prepare continuous graphene, carbon nanotubes or other carbon nanomaterial fibers

Method used

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  • Conductive fiber with scabbard type structure and preparation method thereof
  • Conductive fiber with scabbard type structure and preparation method thereof

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Experimental program
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preparation example Construction

[0026] The preparation method of the conductive fiber of scabbard structure comprises the following steps:

[0027] 1) Dissolving 1 part by weight of carbon nanomaterials in 20 to 200 parts by weight of solvent to prepare solution 1;

[0028] 2) Dissolving 1 part by weight of polymer in 20-200 parts by weight of solvent to form solution 2;

[0029] 3) Pass solution 1 through the inner tube of the coaxial spinning needle at a speed of 5-500 μL / min, and at the same time, extrude solution 2 through the outer tube of the coaxial spinning needle at a speed of 5-500 μL / min to Stay in the coagulation bath for 1min to 2h to form gel fibers with a scabbard structure;

[0030] 4) Chemically reducing 1 part by weight of the gel fiber with 1 to 200 parts by weight of a reducing agent at 60 to 120°C for 1 min to 24 hours;

[0031] 5) The gel fibers reduced in step 4) are washed with a solvent, dried at 25-100° C., and then collected on a roller to obtain conductive fibers with a scabbard...

Embodiment 1

[0037] 1) Dissolve 200 mg of graphene oxide in 40 mL of water to make a 5 mg / mL graphene oxide aqueous solution;

[0038] 2) Dissolve 200 mg of sodium carboxymethyl cellulose in 40 mL of water to make a 5 mg / mL sodium carboxymethyl cellulose solution;

[0039] 3) Pass the graphene oxide aqueous solution through the inner tube of the coaxial spinning needle at a speed of 5 μL / min, and at the same time, pass the sodium carboxymethyl cellulose solution through the outer tube of the coaxial spinning needle at a speed of 5 μL / min Extrude into a 5% calcium chloride coagulation bath for 30 minutes to initially form a gel fiber with a scabbard structure;

[0040] 4) Chemically reduce the gel fiber with 1 mL of hydroiodic acid at 95°C for 1 hour;

[0041] 5) The gel fibers reduced in step 4 are washed with a mixed solution of water and ethanol (volume ratio 1:3), dried at 30°C, and then collected on a roller to obtain a conductive scabbard-shaped structure. fiber.

[0042] After the...

Embodiment 2

[0044] 1) Dissolve 200 mg of graphene oxide in 10 mL of water to make a 20 mg / mL graphene oxide aqueous solution;

[0045] 2) Dissolve 200 mg of polyethylene glycol in 40 mL of water to make a 5 mg / mL polyethylene glycol solution;

[0046]3) Pass the graphene oxide aqueous solution through the inner tube of the coaxial spinning needle at a speed of 5 μL / min, and at the same time, squeeze the polyethylene glycol solution through the outer tube of the coaxial spinning needle at a speed of 10 μL / min Stay in the 5% calcium chloride coagulation bath for 10 minutes, and initially form the gel fiber of the scabbard structure;

[0047] 4) Chemically reduce the gel fiber with 1 mL of hydrazine hydrate at 95°C for 1 hour;

[0048] 5) The gel fibers reduced in step 4 are washed with a mixed solution of water and ethanol (volume ratio 1:3), dried at 90°C, and then collected on a roller to obtain a conductive scabbard-shaped structure. fiber.

[0049] After the above steps, the fiber ob...

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Abstract

The invention discloses a conductive fiber with a scabbard type structure and a preparation method thereof. The preparation method comprises the following steps: 1) preparing a carbon nano material into a solution 1; 2) preparing the polymer into a solution 2; 3) passing the solution 1 through an inner pipe of a coaxial spinning needle head at a certain speed, at the same time, passing the solution 2 through an outer pipe of the coaxial spinning needle head at a certain speed, extruding the two into a coagulation bath, so as to form a gel fiber with scabbard type structure preliminarily; 4) transferring the gel fiber to a solution containing a reducing agent and conducting chemical reduction at a certain temperature; and 5) cleaning the gel fiber subjected to reduction in the step 4 with a solvent, drying and collecting the gel fiber to a roller, so as to obtain the conductive fiber with scabbard type structure. The invention has the advantages of simpleness, low cost and strong applicability, and is suitable for large-scale industrial production; and the produced fiber with scabbard type structure has excellent electrical and mechanical properties and can be used in the fields of power transmission, antistatic fabrics and engineering materials, etc.

Description

technical field [0001] The invention relates to a fiber and a preparation method thereof, in particular to a conductive fiber with a scabbard structure and a preparation method thereof. Background technique [0002] Graphene is a layer of carbon atoms with sp 2 Two-dimensional materials formed by connecting hybrid phases. Since 2004 by A. K. Geim (K. S. Novoselov, et al. Science, 2004, 306 , 666-669) discovery has aroused widespread concern in the scientific and industrial circles. In 2011, Professor Gao Chao from Zhejiang University successfully used the liquid crystal phase behavior of graphene oxide to spin graphene into fibers (Z. Xu, C. Gao, Nat. Comms., 2011, 2 , 571), which opened up a new way for the preparation of graphene materials. Afterwards, graphene fibers with a hollow structure and graphene fibers with a shell-like structure were developed one after another, which further promoted the development of graphene-assembled fibers. Compared with graphene, alth...

Claims

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Application Information

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IPC IPC(8): D01F8/18D01F8/02D01F8/10D01F8/16D01F8/12D01D5/34
Inventor 高超寇亮
Owner 杭州德烯科技集团有限公司
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