CN113445308A - Method for preparing conductive fiber based on aqueous carbon nanotube graphene composite slurry - Google Patents

Method for preparing conductive fiber based on aqueous carbon nanotube graphene composite slurry Download PDF

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CN113445308A
CN113445308A CN202110826469.0A CN202110826469A CN113445308A CN 113445308 A CN113445308 A CN 113445308A CN 202110826469 A CN202110826469 A CN 202110826469A CN 113445308 A CN113445308 A CN 113445308A
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carbon nanotube
preparing
aqueous
composite slurry
conductive fiber
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尹观
柳玉波
杨志涛
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Beijing Qingyue Technology Co ltd
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Beijing Qingyue Technology Co ltd
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D06M11/73Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
    • D06M11/74Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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    • D06M15/00Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/263Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/564Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
    • DTEXTILES; PAPER
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    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/02Natural fibres, other than mineral fibres
    • D06M2101/04Vegetal fibres
    • D06M2101/06Vegetal fibres cellulosic
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    • D06M2101/00Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16Synthetic fibres, other than mineral fibres
    • D06M2101/18Synthetic fibres consisting of macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/26Polymers or copolymers of unsaturated carboxylic acids or derivatives thereof
    • D06M2101/28Acrylonitrile; Methacrylonitrile
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    • D06M2101/00Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16Synthetic fibres, other than mineral fibres
    • D06M2101/30Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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    • D06M2101/00Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16Synthetic fibres, other than mineral fibres
    • D06M2101/30Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/34Polyamides
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    • D06M2101/00Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16Synthetic fibres, other than mineral fibres
    • D06M2101/30Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/34Polyamides
    • D06M2101/36Aromatic polyamides
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    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
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    • D06M2200/00Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/40Reduced friction resistance, lubricant properties; Sizing compositions

Abstract

The invention discloses a method for preparing conductive fibers based on aqueous carbon nanotube graphene composite slurry, which comprises the following steps: preparing composite slurry; the preparation method is suitable for the technical field of conductive fiber preparation, the slurry is fully ground to prepare the conductive slurry with stable dispersion and average particle sizes of 500nm and 2 mu m respectively, and the adhesive force and the heat-resistant aging performance of the fiber are improved by compounding the conductive slurry with the adhesive; the secondary dyeing process is carried out on the fibers by the sizing agents with different particle sizes, so that the uniformity of the resistance of the fibers is greatly improved, the resistance of the fibers is greatly reduced, the use safety performance of the conductive fibers can be greatly improved, and the service life of the conductive fibers can be greatly prolonged; the prepared conductive fiber has the advantages of environmental friendliness, easiness in operation, low price and stable and controllable product quality, and the product has better application value in the aspects of electric heating, static electricity prevention, electromagnetic shielding, biosensors, battery electrodes and the like.

Description

Method for preparing conductive fiber based on aqueous carbon nanotube graphene composite slurry
Technical Field
The invention belongs to the technical field of conductive fiber preparation, and particularly relates to a method for preparing conductive fibers based on aqueous carbon nanotube graphene composite slurry.
Background
The process for preparing the conductive fiber by the coating method is relatively simple, but the prepared conductive fiber still has the problems of uneven resistance, poor controllability, poor adhesion, lack of toughness, no bending resistance and the like of a single fiber, so certain potential safety hazards exist in the application process. The main reasons are that the existing product has large particles of conductive filler, poor conductivity, poor slurry dispersibility and stability, single preparation process and the like. In addition, most of the conductive fibers are prepared by adopting an oily system, so that the environmental protection performance is poor.
At present, a coating method is adopted to prepare the graphene-based conductive fiber, only a layer of graphene is simply coated on the surface of a common fiber through a single adhesive to prepare the carbon black conductive fiber, and the influence of the size of slurry and a sizing process on the adhesion of the conductive fiber, the friction resistance and the stability of resistance are not discussed; in CN 110054949A, a graphene-based heating wire is prepared by adopting single aqueous acrylic resin and a one-step sizing technology, the method does not influence the mechanical property of the fiber and also enables the fiber to have certain conductivity, but conductive substances are unevenly distributed on the surface of the fiber and are easy to fall off, the stability is poor and the hand feeling is poor; in CN 111287003A, the safety of the fiber in application is improved by adding PTC functional components by adopting a simple one-time dyeing process, and the problems of conductivity and resistance uniformity of the fiber are not solved fundamentally.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a method for preparing conductive fibers based on aqueous carbon nanotube graphene composite slurry.
In order to achieve the purpose, the invention adopts the following technical scheme:
the method for preparing the conductive fiber based on the aqueous carbon nanotube graphene composite slurry comprises the following steps:
preparing composite slurry: the composite slurry comprises the following components in parts by mass: 10-20 parts of 5% aqueous graphene dispersion liquid, 50-60 parts of 5% aqueous carbon nanotube dispersion liquid, 5-30 parts of aqueous flexible resin adhesive, 0.01-1 part of defoaming agent, 1-5 parts of dispersing agent, 0.01-1.5 parts of wetting agent and 0.01-5 parts of thickening agent;
and preparing the conductive fiber.
Preferably, the preparing of the composite slurry comprises:
adding the raw materials into a stirring grinder, performing pre-dispersion at a stirring speed of 800-1500 rpm, adding 50-60% by volume of zirconium oxide beads with the diameter of 2.0mm, 3.0mm or the mixture of the two, and grinding at a speed of 500-800rpm for 15-30 min to prepare the aqueous carbon nanotube/graphene composite slurry with the average particle size of about 2 mu m;
adding 65-80% by volume of zirconium oxide beads with the diameter of 1.0mm, 2.0mm or the mixture of the two, grinding at the speed of 750-1000 rpm for 25-45 min, and preparing the aqueous carbon nanotube/graphene composite slurry with the average particle size of about 500 nm.
Preferably, the preparing of the conductive fiber comprises:
preparing a sodium hydroxide aqueous solution with the pH value of 8.5; processing the base material fiber at normal temperature through a single yarn sizing machine;
setting parameters of a dyeing machine, and preparing the carbon nanotube/graphene conductive fiber by twice sizing and dyeing; wherein, the first sizing and dyeing process selects the composite size with the average grain diameter of 2 microns; and the secondary sizing and dyeing process selects the composite sizing agent with the average grain diameter of 500 nanometers, and the base material fiber is one of viscose, terylene, chinlon, aramid fiber and acrylon.
Preferably, the composite slurry comprises the following components in parts by mass:
15 parts of 5% aqueous graphene dispersion liquid, 55 parts of 5% aqueous carbon nanotube dispersion liquid, 24 parts of aqueous flexible resin adhesive, 0.5 part of defoaming agent, 2 parts of dispersing agent, 0.5 part of wetting agent and 3 parts of thickening agent.
Preferably, the 5% aqueous graphene dispersion is a single-layer or 3-5-layer graphene solution.
Preferably, the 5% aqueous carbon nanotube dispersion liquid is a single-walled carbon nanotube, and the wetting agent is a polyether modified silicone wetting agent.
Preferably, the aqueous resin adhesive is aqueous acrylic resin and/or aqueous polyurethane.
Preferably, the dispersant comprises an acrylic block polymer, anionic polyacrylamide, BYK025 and BYK 9076.
Preferably, the thickener is a cellulose-based or hydrophobically modified polyurethane-based thickener.
Preferably, the defoaming agent is at least one of 901W, BYK019 and BYK 025.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
according to the invention, the slurry is fully ground to prepare the conductive slurry with stable dispersion and average particle sizes of 500nm and 2 mu m respectively, and the fiber adhesion and the thermal aging resistance are improved by compounding the conductive slurry with the adhesive.
According to the invention, the secondary dyeing process is carried out on the fiber by the sizing agents with different particle sizes, so that the uniformity of the resistance of the fiber is greatly improved, and the resistance of the fiber is greatly reduced.
The carbon nanotube/graphene composite fiber prepared by the method has uniform and stable resistance and high adhesive force, so that the use safety performance and the service life of the conductive fiber can be greatly improved.
The conductive fiber prepared by the invention has the advantages of environmental friendliness, simple operation, low price and stable and controllable product quality, and the product has better application value in the aspects of electric heating, static electricity prevention, electromagnetic shielding, biosensors, battery electrodes and the like.
Drawings
Fig. 1 is a flowchart of a method for preparing a conductive fiber based on an aqueous carbon nanotube graphene composite slurry according to the present invention.
Reference numerals: 1. raw material fibers; 2. 500 nanometer slurry; 3. an oven; 4. 2 micron slurry; 5. and (3) functional fibers.
Detailed Description
The following describes a specific embodiment of the method for preparing conductive fibers based on the aqueous carbon nanotube graphene composite slurry according to the present invention with reference to fig. 1. The method for preparing the conductive fiber based on the aqueous carbon nanotube graphene composite slurry according to the present invention is not limited to the description of the following examples.
Example 1:
this embodiment provides a specific structure of a method for preparing a conductive fiber based on an aqueous carbon nanotube graphene composite slurry, as shown in fig. 1, including the following steps:
preparing composite slurry: the composite slurry comprises the following components in parts by mass: 10-20 parts of 5% aqueous graphene dispersion liquid, 50-60 parts of 5% aqueous carbon nanotube dispersion liquid, 5-30 parts of aqueous flexible resin adhesive, 0.01-1 part of defoaming agent, 1-5 parts of dispersing agent, 0.01-1.5 parts of wetting agent and 0.01-5 parts of thickening agent;
and preparing the conductive fiber.
Specifically, preparing a composite slurry includes:
adding the raw materials into a stirring grinder, performing pre-dispersion at a stirring speed of 800-1500 rpm, adding 50-60% by volume of zirconium oxide beads with the diameter of 2.0mm, 3.0mm or the mixture of the two, and grinding at a speed of 500-800rpm for 15-30 min to prepare the aqueous carbon nanotube/graphene composite slurry with the average particle size of about 2 mu m;
adding 65-80% by volume of zirconium oxide beads with the diameter of 1.0mm, 2.0mm or the mixture of the two, grinding at the speed of 750-1000 rpm for 25-45 min, and preparing the aqueous carbon nanotube/graphene composite slurry with the average particle size of about 500 nm.
Specifically, a conductive fiber is prepared, comprising:
preparing a sodium hydroxide aqueous solution with the pH value of 8.5; processing the base material fiber at normal temperature through a single yarn sizing machine;
setting parameters of a dyeing machine, and preparing the carbon nanotube/graphene conductive fiber by twice sizing and dyeing; wherein, the first sizing and dyeing process selects the composite size with the average grain diameter of 2 microns; and for the second sizing and dyeing, composite sizing with the average particle size of 500 nanometers is selected, and the base material fiber is one of viscose, terylene, chinlon, aramid fiber and acrylon.
Specifically, the composite slurry comprises the following components in parts by mass:
15 parts of 5% aqueous graphene dispersion liquid, 55 parts of 5% aqueous carbon nanotube dispersion liquid, 24 parts of aqueous flexible resin adhesive, 0.5 part of defoaming agent, 2 parts of dispersing agent, 0.5 part of wetting agent and 3 parts of thickening agent.
Specifically, the 5% aqueous graphene dispersion is a single-layer or 3-5-layer graphene solution.
Specifically, the 5% aqueous carbon nanotube dispersion liquid is a single-walled carbon nanotube, and the wetting agent is a polyether modified silicone wetting agent.
Further, the aqueous resin adhesive is aqueous acrylic resin and/or aqueous polyurethane.
Further, the dispersing agent includes acrylic block polymer, anionic polyacrylamide, BYK025 and BYK 9076.
Further, the thickening agent is cellulose or hydrophobic modified polyurethane thickening agent.
Further, the defoaming agent is at least one of 901W, BYK019 and BYK 025.
The working principle is as follows: as shown in fig. 1, wherein 1 is raw material fiber; 2 is 500 nanometer slurry; 3 is an oven; 4 is 2 micron slurry; and 5 is functional fiber.
Firstly, adding raw materials of each component into a stirring grinder, and performing pre-dispersion at a stirring speed of 800-1500 rpm;
then, adding 50-60% by volume of zirconium oxide beads with the diameter of 2.0mm, 3.0mm or the mixture of the two for grinding at the grinding speed of 500-800rpm for 15-30 min to prepare the aqueous carbon nanotube/graphene composite slurry with the average particle size of about 2 μm;
then, adding 65-80% by volume of zirconium oxide beads with the diameter of 1.0mm, 2.0mm or the mixture of the two, grinding at the speed of 750-1000 rpm for 25-45 min to prepare aqueous carbon nanotube/graphene composite slurry with the average particle size of about 500 nm;
finally, preparing a sodium hydroxide aqueous solution with the pH value of 8.5; processing the base material fiber at normal temperature through a single yarn sizing machine; setting parameters of a dyeing machine, and preparing the carbon nanotube/graphene conductive fiber by twice sizing and dyeing; wherein, the first sizing and dyeing process selects the composite size with the average grain diameter of 2 microns; and for the second sizing and dyeing, selecting the composite sizing agent with the average grain diameter of 500 nanometers.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (10)

1. The method for preparing the conductive fiber based on the aqueous carbon nanotube graphene composite slurry is characterized by comprising the following steps of:
preparing composite slurry: the composite slurry comprises the following components in parts by mass: 10-20 parts of 5% aqueous graphene dispersion liquid, 50-60 parts of 5% aqueous carbon nanotube dispersion liquid, 5-30 parts of aqueous flexible resin adhesive, 0.01-1 part of defoaming agent, 1-5 parts of dispersing agent, 0.01-1.5 parts of wetting agent and 0.01-5 parts of thickening agent;
and preparing the conductive fiber.
2. The method for preparing the conductive fiber based on the aqueous carbon nanotube graphene composite slurry according to claim 1, wherein the preparing of the composite slurry comprises:
adding the raw materials into a stirring grinder, performing pre-dispersion at a stirring speed of 800-1500 rpm, adding 50-60% by volume of zirconium oxide beads with the diameter of 2.0mm, 3.0mm or the mixture of the two, and grinding at a speed of 500-800rpm for 15-30 min to prepare the aqueous carbon nanotube/graphene composite slurry with the average particle size of about 2 mu m;
adding 65-80% by volume of zirconium oxide beads with the diameter of 1.0mm, 2.0mm or the mixture of the two, grinding at the speed of 750-1000 rpm for 25-45 min, and preparing the aqueous carbon nanotube/graphene composite slurry with the average particle size of about 500 nm.
3. The method for preparing the conductive fiber based on the aqueous carbon nanotube graphene composite slurry according to claim 1, wherein the preparing the conductive fiber comprises:
preparing a sodium hydroxide aqueous solution with the pH value of 8.5; processing the base material fiber at normal temperature through a single yarn sizing machine;
setting parameters of a dyeing machine, and preparing the carbon nanotube/graphene conductive fiber by twice sizing and dyeing; wherein, the first sizing and dyeing process selects the composite size with the average grain diameter of 2 microns; and the secondary sizing and dyeing process selects the composite sizing agent with the average grain diameter of 500 nanometers, and the base material fiber is one of viscose, terylene, chinlon, aramid fiber and acrylon.
4. The method for preparing the conductive fiber based on the aqueous carbon nanotube graphene composite slurry according to claim 1, wherein: the composite slurry comprises the following components in parts by mass:
15 parts of 5% aqueous graphene dispersion liquid, 55 parts of 5% aqueous carbon nanotube dispersion liquid, 24 parts of aqueous flexible resin adhesive, 0.5 part of defoaming agent, 2 parts of dispersing agent, 0.5 part of wetting agent and 3 parts of thickening agent.
5. The method for preparing the conductive fiber based on the aqueous carbon nanotube graphene composite slurry according to claim 1, wherein: the 5% aqueous graphene dispersion is a single-layer or 3-5-layer graphene solution.
6. The method for preparing the conductive fiber based on the aqueous carbon nanotube graphene composite slurry according to claim 1, wherein: the 5% aqueous carbon nanotube dispersion liquid is a single-walled carbon nanotube, and the wetting agent is a polyether modified organosilicon wetting agent.
7. The method for preparing the conductive fiber based on the aqueous carbon nanotube graphene composite slurry according to claim 1, wherein: the aqueous resin adhesive is aqueous acrylic resin and/or aqueous polyurethane.
8. The method for preparing the conductive fiber based on the aqueous carbon nanotube graphene composite slurry according to claim 1, wherein: the dispersant includes an acrylic block polymer, anionic polyacrylamide, BYK025 and BYK 9076.
9. The method for preparing the conductive fiber based on the aqueous carbon nanotube graphene composite slurry according to claim 1, wherein: the thickening agent is cellulose or hydrophobic modified polyurethane thickening agent.
10. The method for preparing the conductive fiber based on the aqueous carbon nanotube graphene composite slurry according to claim 1, wherein: the defoaming agent is at least one of 901W, BYK019 and BYK 025.
CN202110826469.0A 2021-07-21 2021-07-21 Method for preparing conductive fiber based on aqueous carbon nanotube graphene composite slurry Pending CN113445308A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114507994A (en) * 2022-03-22 2022-05-17 浙江日方纳米生物技术有限公司 Carbon nanotube-graphene composite conductive fiber and preparation method thereof
CN114575146A (en) * 2022-03-08 2022-06-03 浙江纳美新材料股份有限公司 Antistatic dispersion liquid for polyacrylonitrile and preparation method thereof

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Publication number Priority date Publication date Assignee Title
WO2017191887A1 (en) * 2016-05-04 2017-11-09 재단법인차세대융합기술연구원 Method for producing graphene oxide/carbon nanotube composite fiber, graphene oxide/graphene composite fiber or graphene oxide/graphene/carbon nanotube composite fiber using wet spinning process
CN112593415A (en) * 2020-12-01 2021-04-02 肃宁县中原纺织有限责任公司 Water-based graphene flame-retardant PTC conductive paste, preparation method thereof and flexible conductive heating cloth
CN112981940A (en) * 2021-02-08 2021-06-18 浙江日方纳米生物技术有限公司 Carbon nanotube-graphene conductive fiber

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017191887A1 (en) * 2016-05-04 2017-11-09 재단법인차세대융합기술연구원 Method for producing graphene oxide/carbon nanotube composite fiber, graphene oxide/graphene composite fiber or graphene oxide/graphene/carbon nanotube composite fiber using wet spinning process
CN112593415A (en) * 2020-12-01 2021-04-02 肃宁县中原纺织有限责任公司 Water-based graphene flame-retardant PTC conductive paste, preparation method thereof and flexible conductive heating cloth
CN112981940A (en) * 2021-02-08 2021-06-18 浙江日方纳米生物技术有限公司 Carbon nanotube-graphene conductive fiber

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114575146A (en) * 2022-03-08 2022-06-03 浙江纳美新材料股份有限公司 Antistatic dispersion liquid for polyacrylonitrile and preparation method thereof
CN114507994A (en) * 2022-03-22 2022-05-17 浙江日方纳米生物技术有限公司 Carbon nanotube-graphene composite conductive fiber and preparation method thereof

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Application publication date: 20210928