CN211063803U - High-voltage-resistant graphene heating film of conductive fiber material electrode - Google Patents
High-voltage-resistant graphene heating film of conductive fiber material electrode Download PDFInfo
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- CN211063803U CN211063803U CN201922024109.XU CN201922024109U CN211063803U CN 211063803 U CN211063803 U CN 211063803U CN 201922024109 U CN201922024109 U CN 201922024109U CN 211063803 U CN211063803 U CN 211063803U
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Abstract
The utility model belongs to the graphite alkene field, concretely relates to high pressure resistant graphite alkene heating film of conductive fiber material electrode. The graphene heating film comprises a high-temperature-resistant fiber conductive electrode layer, graphene conductive layers arranged on two sides of the high-temperature-resistant fiber conductive electrode layer and a supporting layer arranged on the outer side of the graphene conductive layer; insulating glue leakage-proof layers are arranged at the edges of two sides of the graphene conducting layer; the high-temperature-resistant fiber conductive electrode layer is connected with the bus bar. At present, the mainstream graphene heating film is loaded with a voltage below 12V and is used for heating clothes and physiotherapy products; the utility model discloses be applied to graphite alkene electric heater unit or drying equipment of 220V or 380V alternating current, have high pressure resistant, ageing resistance and high insulating nature.
Description
Technical Field
The utility model belongs to the graphite alkene field, concretely relates to high pressure resistant graphite alkene heating film of conductive fiber material electrode.
Background
The coal-fired heating in winter causes serious pollution, and in order to effectively improve the current situation of environmental pollution and realize sustainable development, the most effective method is to carry out coal-to-electricity engineering. Graphene is a quasi-two-dimensional material with the thickness of only one atomic layer, has the characteristics of high strength, super heat conductivity and super conductivity, and the special microstructure determines that the graphene material has the advantages of high heat generation speed, extremely high heat conversion rate, stable property and long service life. Therefore, the graphene material is the most ideal electric heating material at present. In order to meet the requirements of high-power heating and drying, 220V or 380V alternating current is adopted, so that the utility model relates to a graphene heating film with high pressure resistance, ageing resistance and high insulativity is needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high pressure resistant graphite alkene heating film of conductive fiber material electrode and piece that generates heat.
The utility model discloses a realize above-mentioned purpose, adopt following technical scheme:
a high-voltage-resistant graphene heating film of a conductive fiber material electrode comprises a high-temperature-resistant fiber conductive electrode layer, graphene conductive layers arranged on two sides of the high-temperature-resistant fiber conductive electrode layer and a supporting layer arranged on the outer side of the graphene conductive layers; insulating glue leakage-proof layers are arranged at the edges of two sides of the graphene conducting layer; the high-temperature-resistant fiber conductive electrode layer is connected with the bus bar.
The high-temperature-resistant fiber conductive electrode layer comprises three high-temperature-resistant fiber conductive electrodes which are sequentially arranged from top to bottom; the bus bars comprise a first bus bar and a second bus bar; the high-temperature-resistant fiber conductive electrode at the upper part and the high-temperature-resistant fiber conductive electrode at the lower part are communicated with the first bus bar; the middle high-temperature resistant fiber conductive electrode is communicated with the second bus bar.
The junction of the bus bar and the high-temperature resistant fiber conductive electrode is in a chamfer structure.
The left edge and the right edge of the supporting layer are respectively the inner sides of the first bus bar and the second bus bar; the upper edge and the lower edge are respectively the outer sides of the upper high-temperature resistant fiber conductive electrode and the lower high-temperature resistant fiber conductive electrode.
The supporting layer is made of polyester resin PET or polyethylene naphthalate PEN.
The utility model discloses still include a method for preparing heating film, including following step:
1) coating the graphene heating slurry on a supporting layer, and coating insulating glue at the edge; respectively manufacturing an upper supporting layer and an upper graphene conducting layer; and a lower support layer and a lower graphene conductive layer;
2) placing a high-temperature-resistant fiber conductive electrode on the graphene heating slurry obtained in the step 1) to form a high-temperature-resistant fiber conductive electrode layer;
3) and combining the upper supporting layer and the upper graphene conducting layer, and the lower supporting layer and the lower graphene conducting layer with the high-temperature-resistant fiber conducting electrode layer in the middle layer, extruding and drying to obtain the high-pressure-resistant graphene heating film of the conducting fiber material electrode.
The preparation method of the graphene heating slurry in the step 1) comprises the following steps: 1) dissolving graphene powder into an alcohol water solution, and ultrasonically stirring to prepare a colloidal solution; 2) adding a binder to prepare slurry.
Specifically, in the step 1), the graphene powder and the alcohol water solution are mixed and stirred for 10-13 hours at the volume ratio of 1-4mg/m L, and the mixture is subjected to ultrasonic treatment for 4-6 hours to obtain graphene colloid, wherein the stirring speed is 30-50r/min, and the concentration of the alcohol water solution is 62%.
The binder is 7-9% of sodium carboxymethylcellulose (CMC), 23-50% of Waterborne Polyurethane (WPU) or 30-40% of silicone-acrylic emulsion (Si-Acr).
The preparation method of the high-temperature resistant fiber conductive electrode comprises the following steps:
1) cleaning high-temperature resistant fibers, and washing the high-temperature resistant fibers for 30min at the temperature of 60-80 ℃ by adopting a mixed solution of 20 g/L NaOH and 6-10 g/L deionized detergent to remove oil stains on the surfaces of the fibers;
2) activating the high-temperature resistant fiber, namely pretreating the oil stain removal high-temperature resistant fiber obtained in the step 1) by using 190-210 g/L NaOH solution at the temperature of 60 ℃ for 40min to activate the hydroxyl on the surface of the fiber;
3) preparing sulfydryl modified coarsened high-temperature resistant fiber, taking out the high-temperature resistant fiber with activated surface hydroxyl prepared in the step 2), immersing the fiber into a solution of ethyl acetate and 3-mercaptopropyl triethoxysilane, wherein the 3-mercaptopropyl triethoxysilane accounts for 10% -15%, and reacting for 90min at room temperature to prepare the sulfydryl modified coarsened high-temperature resistant fiber;
4) taking out the sulfydryl modified coarsened high-temperature resistant fiber, washing with absolute ethyl alcohol, and drying for later use;
5) plating metal on the surface of the cleaned sulfydryl modified coarsened high-temperature resistant fiber obtained in the step 4); the metal plated in the step 5) is Au, Ag or Pt.
When the metal is Ag, the following steps are adopted: preparing electroplating solution A and electroplating solution B, and mixing the two solutions in the same volume;
solution A, AgNO3Dissolving in water to obtain 5-7% solution, and dripping ammonia while stirringWater until Ag is precipitated2Dissolving the O precipitate completely, adding NaOH, blackening the solution again, keeping the pH at 11-12, and continuously dropwise adding ammonia water until the solution is completely clear;
dissolving glucose and tartaric acid in appropriate water, boiling, cooling, and adding ethanol water solution; glucose is dissolved in tartaric acid, and the mass ratio of ethanol to water is 11:1:20: 250.
Mixing the two solutions, putting the mixture into high-temperature-resistant fabric, and carrying out chemical silvering.
Compared with the prior art, the beneficial effects of the utility model are that:
1) at present, the mainstream graphene heating film is loaded with a voltage below 12V and is used for heating clothes and physiotherapy products; the utility model discloses be applied to the graphite alkene electric heater unit or the drying equipment of 220V or 380V alternating current, have high pressure resistant, ageing resistance and high insulating nature;
2) traditional diaphragm that generates heat adopts electrically conductive silver thick liquid as electrode material, and under the loading high pressure condition, the diaphragm calorific capacity increases, and the deformation appears in diaphragm supporting material, because silver thick liquid drying condenses the back, has the silver thick liquid gathering condition, leads to electric conductive property unstable, and mechanical tensile properties is poor simultaneously, causes electrode and busbar junction to appear the crack, and then the fracture, causes the diaphragm to become invalid. The utility model adopts high temperature resistant material fiber material such as PET, PEN or PI, etc., plates conductive metal such as silver, gold, etc., makes electrodes, replaces traditional conductive silver paste, the material has good deformability, effectively solves the electrode fracture phenomenon;
3) improving the structure of the membrane, a, placing an electrifying terminal outside a membrane heating area; b. the graphene conductive slurry is adopted in the region (in the dotted line) enclosed by the electrodes and the bus bars, and the outside of the region is sealed by the insulating glue. The creepage effect of the diaphragm under the high-voltage condition is effectively solved; in the film pasting process, the terminal is burnt due to the warping of the electrode terminal, and the phenomenon is caused by the fact that the temperature of the terminal is too high and the terminal is damaged at the earliest because the graphene is directly contacted with the terminal;
4) and high-temperature resistant materials such as PEN, PI and the like are used as supporting layers, so that the aging rate of the membrane under the conditions of high pressure and high heat is reduced.
Drawings
Fig. 1 is a schematic structural view of the high-voltage resistant graphene heating film of the conductive fiber material electrode of the present invention;
fig. 2 is a schematic structural diagram of the high-voltage resistant graphene heating film of the conductive fiber material electrode of the present invention and a cross-sectional view of the heating film;
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and preferred embodiments.
All materials used in this application are commercially available, and typical examples include carboxymethylcellulose sodium CMC (Shandong Weifang Strength composite Co., Ltd.), or waterborne polyurethane WPU (Anhui Dahuatai New Material Co., Ltd.), and silicone-acrylic emulsion Si-Acr (Shandong Baoda New Material Co., Ltd.). 3-mercaptopropyltriethoxysilane (morning light chemical).
Fig. 1-2 show a high-voltage resistant graphene heating film of a conductive fiber material electrode, which includes a high-temperature resistant fiber conductive electrode layer 4, graphene conductive layers 2 disposed on two sides of the high-temperature resistant fiber conductive electrode layer, and a support layer 1 disposed on the outer side of the graphene conductive layers; the edges of two sides of the graphene conducting layer are provided with insulating glue anti-leakage layers 3; the high-temperature-resistant fiber conductive electrode layer is connected with the bus bar.
The high-temperature-resistant fiber conductive electrode layer comprises three high-temperature-resistant fiber conductive electrodes which are sequentially arranged from top to bottom; the bus bars comprise a first bus bar 11 and a second bus bar 12; wherein, the upper high temperature resistant fiber conductive electrode and the lower high temperature resistant fiber conductive electrode are communicated with the first bus bar 11; the middle refractory fiber conducting electrode is in communication with the second bus bar 12.
The junction of the bus bar and the high-temperature resistant fiber conductive electrode is in a chamfer structure.
The left edge and the right edge of the supporting layer are respectively the inner sides of the first bus bar and the second bus bar; the upper and lower edges are the outer sides of the upper and lower refractory fiber conductive electrodes, respectively (the box positions given by the dashed lines in fig. 1-2).
The supporting layer is made of polyester resin PET or polyethylene naphthalate PEN.
The utility model discloses still include a method for preparing heating film, including following step:
1) coating the graphene heating slurry on a supporting layer, and coating insulating glue at the edge; respectively manufacturing an upper supporting layer and an upper graphene conducting layer; and a lower support layer and a lower graphene conductive layer;
2) placing a high-temperature-resistant fiber conductive electrode on the graphene heating slurry obtained in the step 1) to form a high-temperature-resistant fiber conductive electrode layer;
3) and combining the upper supporting layer and the upper graphene conducting layer, and the lower supporting layer and the lower graphene conducting layer with the high-temperature-resistant fiber conducting electrode layer in the middle layer, extruding and drying to obtain the high-pressure-resistant graphene heating film of the conducting fiber material electrode.
The preparation method of the graphene heating slurry in the step 1) comprises the steps of 1) dissolving graphene powder in an alcohol water solution, carrying out ultrasonic stirring to prepare a colloidal solution, wherein a mixed solution with the concentration of 1-4mg/m L is prepared from the graphene powder and the alcohol water solution, mixing and stirring for 10-13 hours, carrying out ultrasonic stirring for 4-6 hours to obtain a graphene colloid, stirring at the speed of 30-50r/min and the concentration of the alcohol water solution of 62%, 2) adding a binder to prepare the slurry, and adding the binder, namely 7-9% of sodium carboxymethyl cellulose (CMC), 23-50% of Waterborne Polyurethane (WPU) or 30-40% of silicone-acrylate emulsion (Si-Acr).
The preparation method of the high-temperature resistant fiber conductive electrode comprises the following steps of 1) cleaning the high-temperature resistant fiber, washing the high-temperature resistant fiber for 30min at the temperature of 60-80 ℃ by adopting a mixed solution of 20 g/L NaOH and 6-10 g/L deionized detergent, and removing oil stains on the surface of the fiber, 2) activating the high-temperature resistant fiber, and pretreating the oil stain-removed high-temperature resistant fiber obtained in the step 1) by using 190-210 g/L NaOH solution at the temperature of 60 ℃ for 40min to activate hydroxyl on the surface of the fiber;
3) preparing sulfydryl modified coarsened high-temperature resistant fiber, taking out the high-temperature resistant fiber with activated surface hydroxyl prepared in the step 2), immersing the fiber into a solution of ethyl acetate and 3-mercaptopropyl triethoxysilane, wherein the 3-mercaptopropyl triethoxysilane accounts for 10% -15%, and reacting for 90min at room temperature to prepare the sulfydryl modified coarsened high-temperature resistant fiber;
4) taking out the sulfydryl modified coarsened high-temperature resistant fiber, washing with absolute ethyl alcohol, and drying for later use;
5) plating metal on the surface of the cleaned sulfydryl modified coarsened high-temperature resistant fiber obtained in the step 4); the metal plated in the step 5) is Au, Ag or Pt.
When the metal is Ag, the following steps are adopted: preparing electroplating solution A and electroplating solution B, and mixing the two solutions in the same volume;
solution A, AgNO3Dissolving in water to obtain 5-7% solution, and adding ammonia water while stirring until Ag is separated out2Dissolving the O precipitate completely, adding NaOH, blackening the solution again, keeping the pH at 11-12, and continuously dropwise adding ammonia water until the solution is completely clear;
dissolving glucose and tartaric acid in appropriate water, boiling, cooling, and adding ethanol water solution; glucose is dissolved in tartaric acid, and the mass ratio of ethanol to water is 11:1:20: 250.
Mixing the two solutions, putting the mixture into high-temperature-resistant fabric, and carrying out chemical silvering.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (4)
1. The high-voltage-resistant graphene heating film for the conductive fiber material electrode is characterized by comprising a high-temperature-resistant fiber conductive electrode layer, graphene conductive layers arranged on two sides of the high-temperature-resistant fiber conductive electrode layer and a supporting layer arranged on the outer side of the graphene conductive layer; insulating glue leakage-proof layers are arranged at the edges of two sides of the graphene conducting layer; the high-temperature-resistant fiber conductive electrode layer is connected with the bus bar.
2. The high-voltage-resistant graphene heating film of the conductive fiber material electrode according to claim 1, wherein the high-temperature-resistant fiber conductive electrode layer comprises three high-temperature-resistant fiber conductive electrodes sequentially arranged from top to bottom; the bus bars comprise a first bus bar and a second bus bar; the high-temperature-resistant fiber conductive electrode at the upper part and the high-temperature-resistant fiber conductive electrode at the lower part are communicated with the first bus bar; the middle high-temperature resistant fiber conductive electrode is communicated with the second bus bar.
3. The electrode high-voltage-resistant graphene heating film as claimed in claim 2, wherein the junction between the bus bar and the high-temperature-resistant fiber conductive electrode is a chamfered structure.
4. The electrode high voltage resistant graphene exothermic film according to claim 2, wherein the left and right edges of the supporting layer are respectively the inner sides of the first bus bar and the second bus bar; the upper edge and the lower edge are respectively the outer sides of the upper high-temperature resistant fiber conductive electrode and the lower high-temperature resistant fiber conductive electrode.
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| CN201922024109.XU CN211063803U (en) | 2019-11-21 | 2019-11-21 | High-voltage-resistant graphene heating film of conductive fiber material electrode |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110769530A (en) * | 2019-11-21 | 2020-02-07 | 天津北方烯旺材料科技有限公司 | High-voltage-resistant graphene heating film for conductive fiber material electrode and preparation method thereof |
| CN117676941A (en) * | 2023-12-08 | 2024-03-08 | 东莞市卡邦斯科技有限公司 | Heating body for building |
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2019
- 2019-11-21 CN CN201922024109.XU patent/CN211063803U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110769530A (en) * | 2019-11-21 | 2020-02-07 | 天津北方烯旺材料科技有限公司 | High-voltage-resistant graphene heating film for conductive fiber material electrode and preparation method thereof |
| CN110769530B (en) * | 2019-11-21 | 2024-08-06 | 天津北方石墨烯产业研究院 | High-voltage-resistant graphene heating film of conductive fiber material electrode and preparation method thereof |
| CN117676941A (en) * | 2023-12-08 | 2024-03-08 | 东莞市卡邦斯科技有限公司 | Heating body for building |
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