CN114150498A - Method for reducing contact resistance of conductive yarn with carbon nanotube coating - Google Patents

Method for reducing contact resistance of conductive yarn with carbon nanotube coating Download PDF

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CN114150498A
CN114150498A CN202111398401.3A CN202111398401A CN114150498A CN 114150498 A CN114150498 A CN 114150498A CN 202111398401 A CN202111398401 A CN 202111398401A CN 114150498 A CN114150498 A CN 114150498A
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yarn
conductive
coating
drying
slurry
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CN114150498B (en
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朱子玉
房宽峻
张磊
张靖宇
高晶
张志祥
刘思雨
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Shandong Huanghe Delta Institute Of Textile Science And Technology Co ltd
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating 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
    • D06M11/73—Treating 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
    • D06M11/74—Treating 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M11/00—Treating 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
    • D06M11/83—Treating 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 metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/507—Polyesters
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/55—Epoxy resins
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/564—Polyureas, polyurethanes or other polymers having ureide or urethane links; Precondensation products forming them
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
    • D06M15/647—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing polyether sequences
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/32—Polyesters
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/16—Synthetic fibres, other than mineral fibres
    • D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M2101/34—Polyamides

Abstract

The invention relates to a method for reducing the contact resistance of conductive yarn of a carbon nano tube coating, which takes nylon or terylene air textured yarn as a substrate and adopts the process flow of substrate yarn → coating treatment of slurry, coating treatment, drying and curing → post treatment liquid treatment → drying and sizing. The invention utilizes the surface ring of the air textured yarn or the wire ring in a semicircular shape to increase the contact area between the conductive yarn of the carbon nano tube coating and the interwoven metal wire electrode, improves the conductive capability of the conductive material and the resin composite film layer through the high-conductivity nano silver particles distributed on the surface and in the coating, and increases the probability of mutual contact between fibers in the yarn, thereby reducing the concentrated resistance generated by uneven yarn surface between the conductive yarn of the carbon nano tube coating and the interwoven metal wire electrode and the contact resistance mainly formed by the film resistance generated by chemicals with poor conductivity in the yarn. The invention has simple operation and easy production control.

Description

Method for reducing contact resistance of conductive yarn with carbon nanotube coating
Technical Field
The invention relates to a production method of conductive yarns, in particular to a method for reducing the contact resistance of conductive yarns coated with carbon nano tubes.
Background
In recent years, with the rapid development of technological innovation and new technologies and materials, the brand new research and development fields of intelligent textile products, which integrate basic subjects such as traditional textile technologies, artificial intelligence, physical chemistry and the like, share the industrial dividend brought by the technological innovation and the new technology and the new materials. Meanwhile, people pay attention to their health and provide infinite vitality for the development of intelligent wearable far infrared technology and products. The carbon nano tube coating conductive yarn has high-efficiency far infrared emission capability, the emitted far infrared rays with the wavelength of 5.6-15 mu m are overlapped with the wavelength (8-14 mu m) emitted by a human body, and the far infrared rays can play the roles of improving the blood circulation of the human body and promoting the metabolism, thereby meeting the consumption requirements of health and health care. However, due to the different characteristics of the surface unevenness of the yarns and the use of non-conductive chemicals in the coating, the yarns have a significant contact resistance problem after being interwoven with metal wires, and are severely limited by the weaving structure.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method for reducing the contact resistance of the conductive yarn coated with the carbon nano tube, and the method is simple to operate and easy to produce and control.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a method for reducing the contact resistance of a carbon nanotube coating conductive yarn comprises the following production process flows: matrix yarn → coating treatment of coating treatment slurry → drying and curing → post treatment liquid treatment → drying and shaping, wherein the matrix yarn is nylon or terylene air textured yarn;
further, the coating treatment slurry comprises the following components in parts by weight:
60-85 parts of carbon nanotube conductive slurry
0.1-3 parts of nano silver particles
Resin 10-25
The balance of water.
The carbon nano tube is a conductive material, the carbon nano tube and resin form composite slurry, then the composite slurry is coated and fixed on the air textured yarn substrate, and nano silver particles distributed on the surface and inside of the coating are used as a conductive reinforcing material of the film layer.
The particle size of the nano silver particles is 20-300nm, and the nano silver particles are in one or more of spherical shape, polyhedral shape or dendritic shape.
The resin is one of polyacrylic resin, polyester resin, organic silicon modified acrylic resin, polyurethane resin and epoxy resin.
The drying and curing conditions are as follows: the drying temperature is 60-80 ℃, the drying time is 30-120s, and the moisture content of the yarn is controlled to be 10-20%.
The post-treatment liquid comprises the following components in parts by weight:
0.1-10 parts of carbon nano tube conductive slurry
Polyether block modified amino silicone oil 0.5-45 wt%
The balance of water.
Meanwhile, the invention also provides a step of conducting conductive yarn post-treatment by using the post-treatment liquid, which comprises the following steps:
a. firstly, preparing a diluted solution of polyether block modified amino silicone oil: sequentially adding purified water and polyether block modified amino silicone oil into a container, and stirring until the mixture is uniform and transparent solution for later use;
b. adding the carbon nano tube conductive slurry into the solution, stirring and adding the slurry, and uniformly mixing the slurry and the solution for later use;
c. soaking the carbon nano tube coating conductive yarn in the solution for 30-120s, and then taking out to dry and shape;
the drying and shaping temperature is 160-230 ℃, and the time is 20-60 s.
The invention utilizes the surface ring of the air textured yarn or the wire ring in the shape of a semicircle to increase the contact area between the conductive yarn of the carbon nano tube coating and the interwoven metal wire electrode, improves the conductive capability of the conductive material and the resin composite film layer through the high-conductivity nano silver particles distributed on the surface and inside the coating, increases the probability of mutual contact between fibers in the yarn, and is beneficial to the mutual communication between more fibers to form effective conductive connection. The conductive yarn is subjected to post-treatment by adopting a solution containing the carbon nano tube conductive slurry and the polyether block modified amino silicone oil, the softness of the yarn is improved, the distribution of the carbon nano tube conductive material on the surface of the conductive yarn is increased, and the contact sites and the area between the conductive yarn and the metal wire are further increased, so that the concentrated resistance between the conductive yarn of the carbon nano tube coating and the interwoven metal wire electrode, which is generated due to the uneven surface of the yarn, and the contact resistance mainly formed due to the film resistance generated by chemicals with poor conductivity in the yarn are reduced, and the purpose of reducing the contact resistance of the conductive yarn of the carbon nano tube coating is realized.
The invention has the advantages of
According to the invention, the contact area between the carbon nano tube coating conductive yarn and the interwoven metal wire electrode is increased by utilizing the surface ring or the semicircular ring of the air textured yarn, the conductive yarn is subjected to post-treatment by using the solution containing the carbon nano tube conductive slurry and the polyether block modified amino silicone oil, the softness of the yarn is improved, the deformability of the conductive yarn in a weaving structure is improved, meanwhile, the distribution of the conductive material on the surface of the yarn is increased, the contact site and the area between the conductive yarn and the metal wire are further improved, and in addition, the nano silver particles with different particle sizes are used as the conductive reinforcing material of the film layer, so that the probability of mutual contact between fibers in the yarn is increased. The contact resistance of the conductive yarn of the carbon nano tube coating is reduced through the distribution design and the synergistic interaction of the functional components. Meanwhile, the invention has simple operation and easy production control.
Detailed Description
The present invention is described in further detail below with reference to specific examples, but the present invention is not limited to these examples.
A method for reducing the contact resistance of a carbon nanotube coating conductive yarn comprises the following production process flows: matrix yarn → coating treatment of coating treatment slurry → drying and curing → post treatment liquid treatment → drying and shaping, wherein the matrix yarn is nylon or terylene air textured yarn;
the coating treatment slurry comprises the following components in parts by weight:
60-85 parts of carbon nanotube conductive slurry
0.1-3 parts of nano silver particles
Resin 10-25
The balance of water.
The carbon nano tube is a conductive material, the carbon nano tube and resin form composite slurry, then the composite slurry is coated and fixed on the air textured yarn substrate, and nano silver particles distributed on the surface and inside of the coating are used as a conductive reinforcing material of the film layer.
The particle size of the nano silver particles is 20-300nm, and the nano silver particles are in one or more of spherical shape, polyhedral shape or dendritic shape.
The resin is one of polyacrylic resin, polyester resin, organic silicon modified acrylic resin, polyurethane resin and epoxy resin.
The drying and curing conditions are as follows: the drying temperature is 60-80 ℃, the drying time is 30-120s, and the moisture content of the yarn is controlled to be 10-20%.
The post-treatment liquid comprises the following components in parts by weight:
0.1-10 parts of carbon nano tube conductive slurry
Polyether block modified amino silicone oil 0.5-45 wt%
The balance of water.
Meanwhile, the invention also provides a step of conducting conductive yarn post-treatment by using the post-treatment liquid, which comprises the following steps:
a. firstly, preparing a diluted solution of polyether block modified amino silicone oil: sequentially adding purified water and polyether block modified amino silicone oil into a container, and stirring until the mixture is uniform and transparent solution for later use;
b. adding the carbon nano tube conductive slurry into the solution, stirring and adding the slurry, and uniformly mixing the slurry and the solution for later use;
c. soaking the carbon nano tube coating conductive yarn in the solution for 30-120s, and then taking out to dry and shape;
the drying and shaping temperature is 160-230 ℃, and the time is 20-60 s.
The weight ratio of each component in the examples is shown in Table 1.
The weight ratio of each component in the example of Table 1
Figure 230251DEST_PATH_IMAGE001
Example 1
The auxiliary agent in the example 1 of the first group of coating treatment slurry and the post-treatment liquid is selected, and the nylon textured yarn substrate yarn is treated according to the following steps: the production process of the conductive yarn comprises the steps of matrix yarn → coating treatment of coating treatment slurry → drying and curing → post treatment liquid treatment → drying and shaping, wherein the drying temperature is 80 ℃, the drying time is 90s, and the moisture content of the yarn is controlled to be 10%.
Soaking the carbon nano tube coating conductive yarn in the prepared post-treatment liquid for 30s, and then taking out to dry and shape; and (3) drying and shaping at 230 ℃ for 20s to obtain the carbon nano tube coating conductive yarn with reduced contact resistance.
The conductive yarn produced by the process is woven into a conductive fabric according to a plain weave structure, the conductive yarn is used as weft yarn, common polyester or nylon yarn is selected as warp yarn, metal wire electrodes are arranged at a distance of 5cm in the warp direction, the resistance between the metal wire electrodes of the heating sheet consisting of 50 weft yarns is tested, the theoretical resistance of the conductive yarn is calculated, and the difference value between the theoretical resistance of the conductive yarn and the actual resistance of the conductive yarn is the contact resistance of the yarn, and the result is shown in table 2.
Example 2
The auxiliary agent in the example 2 of the second group of coating treatment slurry and the post-treatment liquid is selected, and the nylon textured yarn substrate yarn is treated according to the following steps: the production process of the conductive yarn comprises the steps of matrix yarn → coating treatment of coating treatment slurry → drying and curing → post treatment liquid treatment → drying and shaping, wherein the drying temperature is 70 ℃, the drying time is 100s, and the moisture content of the yarn is controlled to be 12%.
Soaking the carbon nano tube coating conductive yarn in the prepared post-treatment liquid for 30s, and then taking out to dry and shape; and (3) drying and shaping at the temperature of 200 ℃ for 35s to obtain the carbon nano tube coating conductive yarn with reduced contact resistance.
The conductive yarn produced by the process is woven into a conductive fabric according to a plain weave structure, the conductive yarn is used as weft yarn, common polyester or nylon yarn is selected as warp yarn, metal wire electrodes are arranged at a distance of 5cm in the warp direction, the resistance between the metal wire electrodes of the heating sheet consisting of 50 weft yarns is tested, the theoretical resistance of the conductive yarn is calculated, and the difference value between the theoretical resistance of the conductive yarn and the actual resistance of the conductive yarn is the contact resistance of the yarn, and the result is shown in table 2.
Example 3
The auxiliary agent in example 3 of the third group of coating treatment slurry and the post-treatment liquid was selected, and the nylon textured yarn substrate yarn was treated according to the following steps: the production process of the conductive yarn comprises the steps of matrix yarn → coating treatment of coating treatment slurry → drying and curing → post treatment liquid treatment → drying and shaping, wherein the drying temperature is 60 ℃, the drying time is 120s, and the moisture content of the yarn is controlled to be 12%.
Soaking the carbon nano tube coating conductive yarn in the prepared post-treatment liquid for 60s, and then taking out to dry and shape; and (3) drying and shaping at 230 ℃ for 30s to obtain the carbon nano tube coating conductive yarn with reduced contact resistance.
The conductive yarn produced by the process is woven into a conductive fabric according to a plain weave structure, the conductive yarn is used as weft yarn, common polyester or nylon yarn is selected as warp yarn, metal wire electrodes are arranged at a distance of 5cm in the warp direction, the resistance between the metal wire electrodes of the heating sheet consisting of 50 weft yarns is tested, the theoretical resistance of the conductive yarn is calculated, and the difference value between the theoretical resistance of the conductive yarn and the actual resistance of the conductive yarn is the contact resistance of the yarn, and the result is shown in table 2.
Example 4
The assistant in example 4 of the fourth group of coating treatment slurry and the post-treatment liquid was selected, and the nylon textured yarn substrate yarn was treated according to the following procedures: the production process of the conductive yarn comprises the steps of matrix yarn → coating treatment of coating treatment slurry → drying and curing → post treatment liquid treatment → drying and shaping, wherein the drying temperature is 80 ℃, the drying time is 120s, and the moisture content of the yarn is controlled to be 10%.
Soaking the carbon nano tube coating conductive yarn in the prepared post-treatment liquid for 60s, and then taking out to dry and shape; and (4) drying and shaping at the temperature of 180 ℃ for 120s to obtain the carbon nano tube coating conductive yarn with reduced contact resistance.
The conductive yarn produced by the process is woven into a conductive fabric according to a plain weave structure, the conductive yarn is used as weft yarn, common polyester or nylon yarn is selected as warp yarn, metal wire electrodes are arranged at a distance of 5cm in the warp direction, the resistance between the metal wire electrodes of the heating sheet consisting of 50 weft yarns is tested, the theoretical resistance of the conductive yarn is calculated, and the difference value between the theoretical resistance of the conductive yarn and the actual resistance of the conductive yarn is the contact resistance of the yarn, and the result is shown in table 2.
Comparative example
The base yarn is a polyester or nylon draw textured yarn or fully drawn yarn, and the production process flow is as follows: base yarn → coating treatment → drying and sizing, while the coating treatment slurry contains only carbon nanotube conductive slurry and resin, the same procedure is followed to test the contact resistance of the yarn as in example 1/2/3/4, and the results are shown in Table 2.
Table 2 comparison of contact resistance results of conductive yarn tested in examples and comparative examples
Figure 147392DEST_PATH_IMAGE002
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (8)

1. A method for reducing the contact resistance of a carbon nanotube coating conductive yarn is characterized by comprising the following production process flows: matrix yarn → coating treatment of coating treatment slurry → drying and curing → post treatment liquid treatment → drying and shaping, wherein the matrix yarn is nylon or terylene air textured yarn.
2. The method for reducing the contact resistance of the carbon nanotube coated conductive yarn as claimed in claim 1, wherein the coating treatment slurry comprises the following components in parts by weight:
60-85 parts of carbon nanotube conductive slurry
0.1-3 parts of nano silver particles
Resin 10-25
The balance of water;
the carbon nano tube is a conductive material, the carbon nano tube is coated and fixed on the air textured yarn substrate through resin, and nano silver particles distributed on the surface and inside of the coating are used as a conductive reinforcing material of the film layer.
3. The method for reducing the contact resistance of the carbon nanotube coated conductive yarn as claimed in claim 2, wherein the nano silver particles have a particle size of 20-300nm and are in the shape of one or more of a sphere, a polyhedron or a dendrite.
4. The method of claim 2, wherein the resin is one of polyacrylic resin, polyester resin, silicone modified acrylic resin, polyurethane resin, and epoxy resin.
5. The method of claim 1, wherein the drying and curing conditions are as follows: the drying temperature is 60-80 ℃, the drying time is 30-120s, and the moisture content of the yarn is controlled to be 10-20%.
6. The method for reducing the contact resistance of the carbon nanotube coated conductive yarn as claimed in claim 1, wherein the post-treatment solution comprises the following components in parts by weight:
0.1-10 parts of carbon nano tube conductive slurry
Polyether block modified amino silicone oil 0.5-45 wt%
The balance of water.
7. The method of claim 6, wherein the post-treatment comprises the steps of:
a. firstly, preparing a diluted solution of polyether block modified amino silicone oil: sequentially adding purified water and polyether block modified amino silicone oil into a container, and stirring until the mixture is uniform and transparent solution for later use;
b. adding the carbon nano tube conductive slurry into the solution, stirring and adding the slurry, and uniformly mixing the slurry and the solution for later use;
c. and (3) soaking the carbon nano tube coating conductive yarn in the solution for 30-120s, and then taking out to dry and shape.
8. The method as claimed in claim 6, wherein the drying and setting temperature is 160-230 ℃ for 20-60 s.
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CN115748240A (en) * 2022-11-22 2023-03-07 东华大学 Multifunctional washable conductive composite yarn and preparation method thereof

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