CN116631677A - Low-sheet-resistance waterproof flexible conductive cloth and preparation method thereof - Google Patents
Low-sheet-resistance waterproof flexible conductive cloth and preparation method thereof Download PDFInfo
- Publication number
- CN116631677A CN116631677A CN202310663890.3A CN202310663890A CN116631677A CN 116631677 A CN116631677 A CN 116631677A CN 202310663890 A CN202310663890 A CN 202310663890A CN 116631677 A CN116631677 A CN 116631677A
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- CN
- China
- Prior art keywords
- conductive cloth
- coating
- conductive
- cloth
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004744 fabric Substances 0.000 title claims abstract description 70
- 238000002360 preparation method Methods 0.000 title description 7
- 239000011248 coating agent Substances 0.000 claims abstract description 38
- 238000000576 coating method Methods 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000011231 conductive filler Substances 0.000 claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000002904 solvent Substances 0.000 claims abstract description 9
- 239000011148 porous material Substances 0.000 claims abstract description 4
- 239000002002 slurry Substances 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 239000012752 auxiliary agent Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000006255 coating slurry Substances 0.000 claims description 4
- 238000004513 sizing Methods 0.000 claims description 4
- 239000007822 coupling agent Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 239000002184 metal Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000004020 conductor Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000009713 electroplating Methods 0.000 description 3
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 238000005234 chemical deposition Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/04—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of carbon-silicon compounds, carbon or silicon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
Abstract
The invention discloses a flexible conductive fabric with low sheet resistance and water resistance, which comprises a base material, an electroplated layer and a coating, wherein the base material is fiber fabric, the electroplated layer is attached to the surface of outer fiber of the fiber fabric, and the coating is coated on at least one of the upper surface and the lower surface of the base material; the waterproof flexible conductive cloth is characterized in that the coating comprises conductive filler mainly comprising graphene and conductive carbon black, the conductive filler fills up pores formed by a warp-weft structure of the base material and is connected with the electroplated layer so as to reduce the resistance of the conductive cloth, and solvent materials in the coating level the conductive cloth and improve the water resistance of the conductive cloth, so that the waterproof flexible conductive cloth with low sheet resistance is obtained. The conductive cloth prepared by the invention has the advantages of low sheet resistance, water resistance and good flexibility. Because the sheet resistance is controllable, a technician can design and obtain heating conductive cloth with specific resistance according to the requirements of the technical scheme, and the heating conductive cloth is used for various electrifying and heating scenes, and has very remarkable practical value and good application prospect.
Description
Technical Field
The invention relates to the technical field of conductive materials, in particular to a flexible conductive cloth with low sheet resistance and water resistance and a preparation method thereof.
Background
The conductive fabric is made of fiber fabric as base material, and through pre-treatment, electroplating metal coating to form metal layer, and chemical deposition or metal physical transfer of metal nickel onto polyester fiber, plating high conductivity copper layer onto nickel, electroplating oxidation preventing and anticorrosive nickel metal onto copper layer, and combining copper and nickel to provide excellent conductivity and excellent electromagnetic shielding effect, and has shielding range of 100K-3GHz and is used in shielding in high electromagnetic radiation.
Conductive cloths, as their name suggests, may also be used as conductive materials, but their use as conductive materials has the disadvantage of unstable resistance ranges due to the surface metal discontinuities, which limits their use in certain technical fields. For example, as a heat generating material.
Disclosure of Invention
The invention provides a flexible conductive cloth with low sheet resistance and water resistance and a preparation method thereof.
In order to use the conductive cloth as a resistance heating material, the sheet resistance of the conductive cloth is limited to 0.03 ohm-2 ohm, and the technical scheme is as follows:
the flexible conductive cloth comprises a base material, an electroplated layer and a coating, wherein the base material is fiber cloth, the electroplated layer is attached to the outer fiber surface of the fiber cloth, and the coating is coated on at least one of the upper surface and the lower surface of the base material; the waterproof flexible conductive cloth is characterized in that the coating comprises conductive filler mainly comprising graphene and conductive carbon black, the conductive filler fills up pores formed by a warp-weft structure of the base material and is connected with the electroplated layer so as to reduce the resistance of the conductive cloth, and solvent materials in the coating level the conductive cloth and improve the water resistance of the conductive cloth, so that the waterproof flexible conductive cloth with low sheet resistance is obtained.
In order to limit the sheet resistance to 0.03 ohm-2 ohm, the thickness of the coating is required to be 10-80 mu m, and the cloth density is between 230-430 t.
The preparation method of the flexible conductive cloth with low sheet resistance and water resistance comprises the following steps:
coating sizing agents on the upper surface and the lower surface of the substrate, wherein the sizing agents adopt DBE, DMF or a combination thereof, and the obtained conductive cloth has good water resistance; the conductive filler in the slurry is 50-80wt% of graphene and 20-50wt% of conductive carbon black; the mass ratio of the solvent to the conductive filler is 1:1-2:1; the viscosity of the slurry is more than 20000cps.
The graphene selection sheet layer is smaller than 10 layers, the particle size is 1-10um, and the particle size of the conductive carbon black is below 50 nm. This is advantageous in maintaining the flexibility of the conductive cloth while achieving good conductivity.
In addition, 0.1 to 0.5wt% of a coupling agent may be added to the coating paste as an auxiliary agent to obtain better conductive properties.
The coating mode is a contact type scraper, the coating gap is 0-10um, the coating thickness is 1-80um, and the baking mode is hot air baking.
It should be noted that the above is a preferred embodiment of the present invention and is not a limitation of its choice.
Since the conductive cloth is not as flat as it looks, observing the surface of the conductive cloth under magnification, it can be seen that the fibers constituting the conductive cloth have various irregular protrusions thereon, which are caused by uneven deposition at the time of electroplating; it can also be seen that the yarns making up the conductive cloth have voids of different sizes from yarn to yarn. According to the invention, through the coating of graphene and conductive carbon black slurry, the leveling of the surface of the conductive cloth can be realized, so that the sheet resistance is reduced and the consistency of the resistance is improved. Because the sheet resistance is controllable, a technician can design and obtain heating conductive cloth with specific resistance according to the requirements of the technical scheme, and the heating conductive cloth is used for various electrifying and heating scenes, and has very remarkable practical value and good application prospect.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in connection with the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the embodiments herein can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as provided in the examples, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention relates to a flexible conductive cloth with low sheet resistance and water resistance, which comprises a base material, an electroplated layer and a coating, wherein the base material is fiber cloth, the electroplated layer is attached to the surface of outer fiber of the fiber cloth, and the coating is coated on at least one of the upper surface and the lower surface of the base material; the waterproof flexible conductive cloth is characterized in that the coating comprises conductive filler mainly comprising graphene and conductive carbon black, the conductive filler fills up pores formed by a warp-weft structure of the base material and is connected with the electroplated layer so as to reduce the resistance of the conductive cloth, and solvent materials in the coating level the conductive cloth and improve the water resistance of the conductive cloth, so that the waterproof flexible conductive cloth with low sheet resistance is obtained.
Example 1
The sheet resistance is limited to 2 ohms, the thickness of the coating is required to be 10 mu m, and the cloth density is 240t.
The preparation method of the flexible conductive cloth with low sheet resistance and water resistance comprises the following steps:
coating slurry on the upper and lower surfaces of the common conductive cloth, wherein the slurry adopts DBE or DMF as a solvent, and the conductive cloth obtained by the method has good water resistance; the conductive filler in the slurry is 50 weight percent of graphene and 20 weight percent of conductive carbon black; the mass ratio of the solvent to the conductive filler is 1:1; the viscosity of the slurry is more than 20000cps.
The graphene selection sheet layer is smaller than 10 layers, the particle size is 1-10um, and the particle size of the conductive carbon black is below 50 nm. This is advantageous in maintaining the flexibility of the conductive cloth while achieving good conductivity.
Further, 0.1wt% of a silane coupling agent for textile was added to the coating slurry as an auxiliary agent.
The coating mode is a contact type scraper, the coating gap is 5um, the coating thickness is 10um, and the baking mode is hot air baking.
Example 2
The sheet resistance is limited to 0.03 ohm, the thickness of the coating is required to be 80 mu m, and the cloth density is between 430 t.
The preparation method of the flexible conductive cloth with low sheet resistance and water resistance comprises the following steps:
coating slurry on the upper and lower surfaces of the common conductive cloth, wherein the slurry adopts a composition of DBE and DMF; the conductive filler in the slurry is 80 weight percent of graphene and 50 weight percent of conductive carbon black; the mass ratio of the solvent to the conductive filler is 2:1; the viscosity of the slurry is more than 20000cps.
The graphene selection sheet layer is smaller than 10 layers, the particle size is 1-10um, and the particle size of the conductive carbon black is below 50 nm. This is advantageous in maintaining the flexibility of the conductive cloth while achieving good conductivity.
Further, 0.5wt% of a silane coupling agent for textile was added to the coating paste as an auxiliary agent.
The coating mode is a contact type scraper, the coating gap is 10um, the coating thickness is 80um, and the baking mode is hot air baking.
It should be noted that, the orientation or positional relationship indicated in the description of the present invention is based on the orientation or positional relationship shown in the embodiment, or the orientation or positional relationship in which the product of the present invention is conventionally put in use, or the orientation or positional relationship that is conventionally understood by those skilled in the art is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Claims (6)
1. The flexible conductive cloth comprises a base material, an electroplated layer and a coating, wherein the base material is fiber cloth, the electroplated layer is attached to the outer fiber surface of the fiber cloth, and the coating is coated on at least one of the upper surface and the lower surface of the base material; the waterproof flexible conductive cloth is characterized in that the coating comprises conductive filler mainly comprising graphene and conductive carbon black, the conductive filler fills up pores formed by a warp-weft structure of the base material and is connected with the electroplated layer so as to reduce the resistance of the conductive cloth, and solvent materials in the coating level the conductive cloth and improve the water resistance of the conductive cloth, so that the waterproof flexible conductive cloth with low sheet resistance is obtained.
2. The flexible, electrically conductive cloth of low sheet resistance and water resistance according to claim 1, wherein the sheet resistance is limited to 0.03 ohm-2 ohm, the coating thickness is 10-80 μm, and the cloth density is between 230-430 t.
3. The method for preparing the flexible conductive cloth with low sheet resistance and water resistance as claimed in claim 1 or 2, which is characterized in that: coating sizing agents on the upper surface and the lower surface of the substrate, wherein the sizing agents adopt DBE, DMF or a combination thereof, and the obtained conductive cloth has good water resistance; the conductive filler in the slurry is 50-80wt% of graphene and 20-50wt% of conductive carbon black; the mass ratio of the solvent to the conductive filler is 1:1-2:1; the viscosity of the slurry is more than 20000cps.
4. The method for preparing the flexible conductive cloth with low sheet resistance and water resistance according to claim 3, which is characterized in that: the graphene selection sheet layer is smaller than 10 layers, the particle size is 1-10um, and the particle size of the conductive carbon black is below 50 nm.
5. The method for preparing the flexible conductive cloth with low sheet resistance and water resistance according to claim 3, which is characterized in that: 0.1 to 0.5wt% of a coupling agent is added to the coating slurry as an auxiliary agent.
6. The method for preparing the flexible conductive cloth with low sheet resistance and water resistance according to claim 3, which is characterized in that: the coating mode is a contact type scraper, the coating gap is 0-10um, the coating thickness is 10-80um, and the baking mode is hot air baking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310663890.3A CN116631677A (en) | 2023-06-07 | 2023-06-07 | Low-sheet-resistance waterproof flexible conductive cloth and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310663890.3A CN116631677A (en) | 2023-06-07 | 2023-06-07 | Low-sheet-resistance waterproof flexible conductive cloth and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116631677A true CN116631677A (en) | 2023-08-22 |
Family
ID=87591883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310663890.3A Pending CN116631677A (en) | 2023-06-07 | 2023-06-07 | Low-sheet-resistance waterproof flexible conductive cloth and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116631677A (en) |
-
2023
- 2023-06-07 CN CN202310663890.3A patent/CN116631677A/en active Pending
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