Reduced graphene oxide/polyacrylonitrile composite fiber and preparation method thereof

A technology of polyacrylonitrile fiber and polyacrylonitrile, which is applied in the field of reduced graphene oxide/polyacrylonitrile composite fiber and its preparation, can solve the problem that the electrical conductivity of PAN fiber cannot be effectively improved, and achieves improved electrical conductivity and effective functional compounding. , the effect of reducing damage

Active Publication Date: 2018-04-24
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that the above-mentioned prior art cannot effectively improve the electrical conductivity of PAN fibers, and to provide a reduced graphene oxide / polyacrylonitrile composite fiber and a preparation method thereof that can effectively improve the electrical conductivity of PAN fibers

Method used

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  • Reduced graphene oxide/polyacrylonitrile composite fiber and preparation method thereof
  • Reduced graphene oxide/polyacrylonitrile composite fiber and preparation method thereof
  • Reduced graphene oxide/polyacrylonitrile composite fiber and preparation method thereof

Examples

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Effect test

Embodiment 1

[0044] A kind of preparation method of reduced graphene oxide / polyacrylonitrile composite fiber, concrete steps are as follows:

[0045] (1) The polyacrylonitrile that the first monomer is acrylonitrile, the second monomer is methyl methacrylate and the third monomer is DEMA is dissolved in an aqueous solution of 50 wt% sodium thiocyanate to obtain a spinning stock solution , where acrylonitrile accounts for 85% of the mass fraction of polyacrylonitrile, methyl methacrylate accounts for 14% of the mass fraction of polyacrylonitrile, DEMA accounts for 1% of the mass fraction of polyacrylonitrile, and polyacrylonitrile in the spinning dope The quality score of 20%;

[0046] (2) The spinning stock solution enters the coagulation bath, washing tank and stretching bath through the spinneret, and after being stretched 9 times, the polyacrylonitrile fiber containing the amino group is collected by a winder, and the polyacrylonitrile fiber containing the amino group The SEM picture i...

Embodiment 2

[0051] A kind of preparation method of reduced graphene oxide / polyacrylonitrile composite fiber, concrete steps are as follows:

[0052] (1) The polyacrylonitrile that the first monomer is acrylonitrile, the second monomer is methyl methacrylate and the third monomer is DEMA is dissolved in an aqueous solution of 52 wt% sodium thiocyanate to obtain a spinning stock solution , where acrylonitrile accounts for 86% of the mass fraction of polyacrylonitrile, methyl methacrylate accounts for 13.5% of the mass fraction of polyacrylonitrile, DEMA accounts for 0.5% of the mass fraction of polyacrylonitrile, and polyacrylonitrile in the spinning dope The mass fraction of 10%;

[0053] (2) The spinning stock solution enters the coagulation bath, washing tank and stretching bath through the spinneret, and after being stretched 3 times, the polyacrylonitrile fiber containing amino groups is collected by a winder, wherein the coagulation bath has a temperature of 0 ° C, The aqueous soluti...

Embodiment 3

[0058] A kind of preparation method of reduced graphene oxide / polyacrylonitrile composite fiber, concrete steps are as follows:

[0059] (1) the polyacrylonitrile that the first monomer is acrylonitrile, the second monomer is methyl methacrylate and the third monomer is DEMA is dissolved in the aqueous solution that is the sodium thiocyanate of 54wt% to obtain spinning dope , wherein acrylonitrile accounts for 87% of the mass fraction of polyacrylonitrile, methyl methacrylate accounts for 11% of the mass fraction of polyacrylonitrile, DEMA accounts for 2% of the mass fraction of polyacrylonitrile, and polyacrylonitrile in the spinning dope The quality score is 30%;

[0060] (2) The spinning stock solution enters the coagulation bath, water washing tank and stretching bath through the spinneret, and after being stretched 12 times, the polyacrylonitrile fiber containing amino groups is collected by a winder, wherein the coagulation bath has a temperature of 25°C, An aqueous sol...

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Abstract

The invention relates to a reduced graphene oxide/polyacrylonitrile composite fiber and a preparation method thereof. The method is that after graphene oxide is assembled onto the surfaces of amino group-containing polyacrylonitrile fibers by magnetic attraction and chemical bonding, reduction treatment is carried out, so that the reduced graphene oxide/polyacrylonitrile composite fiber is obtained. The average volume resistivity of the reduced graphene oxide/polyacrylonitrile composite fiber prepared by the method is less than or equal to 30 Omega.cm, reduced by 12 orders of magnitude in comparison with the average volume resistivity of the raw filament; moreover, the decrease rate of the breaking strength is less than or equal to 5 percent relative to the decrease rate of the breaking strength of the raw filament, the increase rate of the elongation at break is greater than or equal to 58 percent relative to the increase rate of the elongation at break of the raw filament, and afterdeionized water is utilized to wash the composite fiber for 10 to 20 times, the average volume resistivity of the fiber is less than or equal to 33 Omega.cm. The method disclosed by the invention hasthe advantages of reducing agent selection diversity, good reduction effect, low production cost and the like, the produced fiber has good conductivity and durability, and furthermore, the inherent excellent mechanical property of the fiber is kept.

Description

technical field [0001] The invention belongs to the field of preparation of reduced graphene oxide-based composite materials, and relates to a reduced graphene oxide / polyacrylonitrile composite fiber and a preparation method thereof. Background technique [0002] Graphene oxide (GO) is a derivative of graphene with large specific surface area, unique thermodynamic properties, unique mechanical properties and strong chemical modification ability. Graphene oxide has the same layered structure as graphene, but a large number of oxygen-containing functional groups (-OH, C=O and C-O-C, etc.) are distributed between GO layers and at the edge of the layers. These functional groups make GO easier to disperse in water and organic solvents, and the polar functional groups on the surface are easy to form strong interactions or chemical bonds with some polar organic molecules and polymers, which is beneficial to compound with other materials and realize the functionalization of material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/74D06M101/28
CPCD06M11/74D06M2101/28
Inventor 王彪郑迎迎李凤美
Owner DONGHUA UNIV
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