CN110958724A - Microcrystalline glass or mica sheet heating device conducting electricity through silver paste and connecting method - Google Patents
Microcrystalline glass or mica sheet heating device conducting electricity through silver paste and connecting method Download PDFInfo
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- CN110958724A CN110958724A CN201910999846.3A CN201910999846A CN110958724A CN 110958724 A CN110958724 A CN 110958724A CN 201910999846 A CN201910999846 A CN 201910999846A CN 110958724 A CN110958724 A CN 110958724A
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- silver
- silver paste
- mica sheet
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- microcrystalline glass
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/0019—Circuit arrangements
- H05B3/0023—Circuit arrangements for heating by passing the current directly across the material to be heated
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/03—Electrodes
Abstract
The invention relates to the technical field of conductive connection, in particular to a microcrystalline glass or mica sheet heating device conducting electricity through silver paste and a connection method. The graphene layer is arranged on the silver paste layer conductive part and the microcrystalline glass or the mica sheet, the microcrystalline glass or the mica sheet at the silver paste layer electrode connecting part is provided with holes, and the metal electrode is fixed on the silver paste layer electrode connecting part through screws. The invention ensures that the silver paste layer is not oxidized, the surface of the product is smooth, the heating layer and the power supply layer are thin, and the application range of the product is expanded.
Description
Technical Field
The invention relates to the technical field of conductive connection, in particular to a microcrystalline glass or mica sheet heating device conducting electricity through silver paste and a connection method.
Background
With the development of the technology, the application range of graphene is continuously increased, and graphene layers need to be stably powered. However, it is difficult to supply power to the graphene layer on some objects, for example, on the microcrystalline glass or the mica sheet, the objects in the microcrystalline glass or the mica sheet are heated through the graphene layer, since the heating engineering can generate high temperature, if the electrodes are pressed on the graphene layer in a pressing mode, the resistance of the connection part is large, and the device is easy to generate heat or strike fire, and is not beneficial to long-term stable operation of the device.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a microcrystalline glass or mica sheet heating device conducting electricity through silver paste and a connecting method. The silver paste layer is arranged below the graphene layer, so that the silver paste layer is prevented from being oxidized, the surface of the product is smooth, the heating layer and the power supply layer are thin, and the application range of the product is expanded.
The technical scheme of the invention is as follows: the utility model provides a through electrically conductive glass ceramic of silver thick liquid or mica sheet device that generates heat, includes glass ceramic or mica sheet, silver thick liquid layer, graphite alkene layer, metal electrode, and silver thick liquid layer divide into silver thick liquid layer electrode connection position, silver thick liquid layer conducting site, and wherein the silver thick liquid layer sets up on glass ceramic or mica sheet, its characterized in that: the graphene layer is arranged on the silver paste layer conductive part and the microcrystalline glass or the mica sheet, the microcrystalline glass or the mica sheet at the silver paste layer electrode connecting part is provided with holes, and the metal electrode is fixed on the silver paste layer electrode connecting part through screws.
According to the microcrystalline glass or mica sheet heating device conducting through silver paste, the device is characterized in that: the metal electrode is a metal silver electrode.
The invention also discloses a connection method for conducting electricity through silver paste, which comprises the following steps,
step one, silver paste is adhered to the microcrystalline glass or the mica sheet,
step two, drying the microcrystalline glass or mica sheet adhered with the silver paste at the temperature of 300-800 ℃ for 20-50 minutes,
and step three, drilling holes on the microcrystalline glass or the mica sheet at the connection part of the silver paste layer electrode, and fixing the metal electrode at the connection part of the silver paste layer electrode through screws.
And step four, adhering the graphene slurry to the microcrystalline glass or the mica sheet and the conductive part of the silver slurry layer, and drying the graphene slurry to form the graphene layer.
The connection method through silver paste conduction is characterized in that: the silver paste in the first step accounts for 75-87% of the silver powder, 8-12% of the thermoplastic polyimide resin and 5-13% of the nitrile-group-containing rubber according to the weight percentage, wherein the nitrile group content of the nitrile-group-containing rubber accounts for more than 50% of the weight percentage of the nitrile-group-containing rubber, the balance is rubber components, the silver powder comprises nano-scale silver powder and granular silver powder, the nano-scale silver powder accounts for 25-40% of the weight percentage, the grain diameter of the nano-scale silver powder is 5-8 nm, the granular silver powder accounts for 60-75% of the weight percentage, and the grain diameter of the granular silver powder is 250-300 nm.
The connection method through silver paste conduction is characterized in that: the silver paste comprises, by weight, 80% of silver powder, 10% of thermoplastic polyimide resin and 10% of nitrile group-containing rubber, wherein the meter-class silver powder accounts for 33% of the silver powder, and the granular silver powder accounts for 67% of the silver powder.
The connection method through silver paste conduction is characterized in that: and in the second step, the drying temperature is 580-620 ℃, and the drying time is 30-35 minutes.
The invention has the beneficial effects that: 1. no other connection is made on the microcrystalline glass or the mica sheet, the process is simple, and the processing time is short. 2. And no welding is carried out, so that the phenomenon of short-time high temperature cannot occur in the processing process, and the glass cannot be damaged. 3. The crack can not appear at the connecting position due to the difference of the heating efficiency of the materials, and the method is stable and reliable. 4. The stability and reliability of power supply can be ensured only by ensuring that the pressure of the connection part of the metal electrode and the silver paste layer electrode is larger, and integral extrusion is not needed. 5. During the silver paste processing process or the working process of the silver paste layer, the silver paste layer is always positioned below the metal electrode or the graphene layer, so that the silver paste layer is not oxidized, the silver paste layer keeps smaller resistivity, and the long-term stable conduction is ensured. Meanwhile, the surface of the product is flat and smooth, the heating layer and the power supply layer are ensured to be very thin, and the application range of the product is expanded.
Drawings
FIG. 1 is a schematic diagram showing the adhesion of the silver paste layer and the microcrystalline glass or the mica sheet according to the present invention.
Fig. 2 is a front view of the apparatus of the present invention.
Fig. 3 is a top view of the apparatus of the present invention.
Description of reference numerals: the structure comprises microcrystalline glass or mica sheets 1, a silver paste layer 2, a silver paste layer electrode connecting part 21, a silver paste layer conducting part 22, a graphene layer 3, a metal electrode 4 and screws 5.
The noun explains: glass ceramics (CRYSTOE and neoceramics), which is also known as micro-jade or ceramic glass, is an inorganic non-metallic material that has the dual characteristics of glass and ceramic. The glass-ceramic, like a ceramic, is composed of crystals whose atomic arrangement is regular. Therefore, the microcrystalline glass has higher brightness than ceramic, higher toughness than glass, higher mechanical strength, excellent insulating property, less dielectric loss, stable dielectric constant, adjustable thermal expansion coefficient in a large range, chemical corrosion resistance, wear resistance, good thermal stability and high use temperature.
The mica sheet is composed of silica-rich muscovite, quartz, garnet and rutile, and can generate albite, tetrahedrite, chlorite, etc.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
As shown in fig. 1 to 3, the invention discloses a microcrystalline glass or mica sheet heating device conducting electricity through silver paste, which comprises microcrystalline glass or mica sheet 1, a silver paste layer 2, a silver paste layer electrode connecting part 21, a silver paste layer conducting part 22, a graphene layer 3 and a metal electrode 4, wherein the silver paste layer 2 is divided into the silver paste layer electrode connecting part 21 and the silver paste layer conducting part 22, the silver paste layer 2 is arranged on the microcrystalline glass or mica sheet 1, the graphene layer 3 is arranged on the silver paste layer conducting part 22 and the microcrystalline glass or mica sheet 1, the microcrystalline glass or mica sheet 1 of the silver paste layer electrode connecting part 21 is provided with holes, and the metal electrode 4 is fixed on the silver paste layer electrode connecting part 21 through screws 5. The metal electrode 4 of the present invention is preferably a metal silver electrode, and has good conductivity.
The invention also discloses a connection method for conducting electricity through silver paste, which comprises the following steps,
step one, silver paste is adhered to the microcrystalline glass or the mica sheet, the silver paste can be adhered to the microcrystalline glass or the mica sheet in a screen printing mode, the silver paste is required to have adhesive force and adhesive shape, and the conductivity of the silver paste is preferably more than 1000S/cm.
The silver paste provided by the invention can be selected from silver pastes with higher conductivity and better viscosity, and the silver paste with better performance is provided by the invention. The silver paste comprises 75-87% of silver powder, 8-12% of thermoplastic polyimide resin and 5-13% of nitrile-group-containing rubber according to weight percentage, wherein the nitrile group content of the nitrile-group-containing rubber accounts for more than 50% of the weight percentage of the nitrile-group-containing rubber, and the balance is rubber components. The mixing ratio of the resin and the nitrile-group-containing rubber can improve the viscosity coefficient of the silver paste, so that the rubber, the resin and the silver paste can be uniformly mixed, and the overall conductivity of the product is high. The silver powder comprises the nano-scale silver powder and the granular silver powder, wherein the nano-scale silver powder accounts for 25-40 wt% of the silver powder, the grain diameter of the nano-scale silver powder is 5-8 nm, the granular silver powder accounts for 60-75 wt% of the silver powder, and the grain diameter of the granular silver powder is 250-300 nm.
The invention preferably calculates the weight percentage of the silver powder to be 80 percent, the weight percentage of the thermoplastic polyimide resin to be 10 percent and the weight percentage of the nitrile-group-containing rubber to be 10 percent, wherein the meter-class silver powder accounts for 33 percent of the weight percentage of the silver powder, and the granular silver powder accounts for 67 percent of the weight percentage of the silver powder. The silver paste has the conductivity of more than 3000S/cm, the conductivity is good, the viscosity coefficient is higher than 1000cPs (centipoise), and the material adhesion is facilitated.
And step two, drying the microcrystalline glass or mica sheet adhered with the silver paste at the temperature of 300-800 ℃ for 20-50 minutes, wherein moisture is mainly dried at the temperature of 580-620 ℃, preferably 600 ℃, and the drying time is 30-35 minutes, so as to form a silver paste layer. In the drying process, the microcrystalline glass or the mica sheet is required to be slowly heated from the normal temperature to the high temperature for drying so as to ensure that the silver paste is not foamed, and then the silver paste is stabilized at the drying temperature and is cooled from the high temperature to the normal temperature after being dried.
And step three, drilling holes on the microcrystalline glass or the mica sheet at the connection part of the silver paste layer electrode, and fixing the metal electrode at the connection part of the silver paste layer electrode through screws.
According to the invention, holes can be drilled on the glass ceramic or the mica sheet before the silver paste is coated in the first step, so that the drilled holes are positioned at the electrode connecting part of the silver paste layer, and the metal electrode can be directly fixed at the electrode connecting part of the silver paste layer through screws without drilling in the third step, thereby avoiding high temperature generated by drilling and further avoiding silver paste oxidation.
The metal electrode of the present invention is preferably a metal silver electrode, and has good conductivity, and a metal copper electrode may be used, but has poor conductivity as compared with a metal silver electrode, and may also be used.
And step four, adhering the graphene slurry to the microcrystalline glass or the mica sheet and the conductive part of the silver slurry layer, wherein the graphene slurry can be adhered to the microcrystalline glass or the mica sheet by adopting a screen printing mode. And then drying the graphene slurry to form the graphene layer. The drying process comprises the following steps: and slowly heating the mixture from the normal temperature to the high temperature for drying, ensuring that the microcrystalline glass or the mica sheet is not cracked, ensuring that the graphene slurry is not foamed, then stabilizing the mixture at the drying temperature, and slowly cooling the mixture from the high temperature to the normal temperature after drying, and also ensuring that the microcrystalline glass or the mica sheet is not cracked. The drying temperature is 300 ° to 800 °, preferably 540 ° to 560 °, preferably 550 °, for 20 minutes to 50 minutes.
The method has the advantages that the silver paste layer is always positioned below the metal electrode or the graphene layer in the silver paste processing process or the working process, so that the silver paste layer is not oxidized, the silver paste keeps smaller resistivity, and the long-term stable conduction is ensured. Meanwhile, the surface of the product is flat and smooth, the heating layer and the power supply layer are ensured to be very thin, and the application range of the product is expanded.
The step 3 and the step 4 of the invention can be exchanged, but after the exchange, the electrode connecting part of the silver paste layer is easy to be oxidized in the processing process, the product performance is reduced, but when the product is used, the silver paste layer is still protected and can not be oxidized. As a further scheme of the invention, the step four can be carried out firstly, and the step one to the step three are carried out, but the silver paste layer is completely exposed, so that the silver paste layer is easy to oxidize, and the service life of the product is shortened.
Claims (6)
1. The utility model provides a through electrically conductive glass ceramic of silver thick liquid or mica sheet device that generates heat, includes glass ceramic or mica sheet, silver thick liquid layer, graphite alkene layer, metal electrode, and silver thick liquid layer divide into silver thick liquid layer electrode connection position, silver thick liquid layer conducting site, and wherein the silver thick liquid layer sets up on glass ceramic or mica sheet, its characterized in that: the graphene layer is arranged on the silver paste layer conductive part and the microcrystalline glass or the mica sheet, the microcrystalline glass or the mica sheet at the silver paste layer electrode connecting part is provided with holes, and the metal electrode is fixed on the silver paste layer electrode connecting part through screws.
2. The microcrystalline glass or mica sheet heating device conducting electricity through silver paste according to claim 1, characterized in that: the metal electrode is a metal silver electrode.
3. A connection method through silver paste conduction comprises the following steps,
step one, silver paste is adhered to the microcrystalline glass or the mica sheet,
step two, drying the microcrystalline glass or mica sheet adhered with the silver paste at the temperature of 300-800 ℃ for 20-50 minutes,
step three, drilling holes on the microcrystalline glass or the mica sheet at the connection part of the silver paste layer electrode, fixing the metal electrode at the connection part of the silver paste layer electrode through screws,
and step four, adhering the graphene slurry to the microcrystalline glass or the mica sheet and the conductive part of the silver slurry layer, and drying the graphene slurry to form the graphene layer.
4. The connection method through silver paste conduction according to claim 3, wherein the connection method comprises the following steps: the silver paste in the first step accounts for 75-87% of the silver powder, 8-12% of the thermoplastic polyimide resin and 5-13% of the nitrile-group-containing rubber according to the weight percentage, wherein the nitrile group content of the nitrile-group-containing rubber accounts for more than 50% of the weight percentage of the nitrile-group-containing rubber, the balance is rubber components, the silver powder comprises nano-scale silver powder and granular silver powder, the nano-scale silver powder accounts for 25-40% of the weight percentage, the grain diameter of the nano-scale silver powder is 5-8 nm, the granular silver powder accounts for 60-75% of the weight percentage, and the grain diameter of the granular silver powder is 250-300 nm.
5. The connection method through silver paste conduction according to claim 4, wherein the connection method comprises the following steps: the silver paste comprises, by weight, 80% of silver powder, 10% of thermoplastic polyimide resin and 10% of nitrile group-containing rubber, wherein the meter-class silver powder accounts for 33% of the silver powder, and the granular silver powder accounts for 67% of the silver powder.
6. The connection method through silver paste conduction according to claim 3, wherein the connection method comprises the following steps: and in the second step, the drying temperature is 580-620 ℃, and the drying time is 30-35 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910999846.3A CN110958724A (en) | 2019-10-21 | 2019-10-21 | Microcrystalline glass or mica sheet heating device conducting electricity through silver paste and connecting method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910999846.3A CN110958724A (en) | 2019-10-21 | 2019-10-21 | Microcrystalline glass or mica sheet heating device conducting electricity through silver paste and connecting method |
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Citations (13)
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|---|---|---|---|---|
| GB1406288A (en) * | 1972-10-17 | 1975-09-17 | Lee H G | Silvered mica capacitors |
| CN2197785Y (en) * | 1994-08-23 | 1995-05-17 | 杨阳 | Multi-layer electric heating element |
| EP0894935A1 (en) * | 1997-07-31 | 1999-02-03 | Saint-Gobain Vitrage | Insulating glazing element |
| CN2904541Y (en) * | 2006-05-01 | 2007-05-23 | 王克政 | Electric heater |
| JP2008108716A (en) * | 2006-09-27 | 2008-05-08 | Kyoto Elex Kk | Conductive paste composition for low-temperature firing |
| CN103281813A (en) * | 2013-05-20 | 2013-09-04 | Kmt纳米科技（香港）有限公司 | Nanocomposite microcrystalline electrothermal film and preparation method thereof |
| CN203676165U (en) * | 2014-01-06 | 2014-07-02 | 黄伟聪 | Electric heating garment |
| CN103997800A (en) * | 2013-08-26 | 2014-08-20 | Kmt纳米科技有限公司 | Connecting process of far infrared nano electrothermal film electrode blind holes and wire |
| CN104411028A (en) * | 2014-11-07 | 2015-03-11 | 广东爱乐活科技有限公司 | Electrode connection structure of electrothermal film, preparation method of electrode connection structure and heating device |
| CN204993900U (en) * | 2015-08-10 | 2016-01-20 | 烟台一诺电子材料有限公司 | Heating device based on flake graphite electrode |
| CN107514119A (en) * | 2017-08-21 | 2017-12-26 | 四川省安德盖姆石墨烯科技有限公司 | A kind of graphene floor heating tiles and its production method |
| CN109237593A (en) * | 2018-10-25 | 2019-01-18 | 陆建军 | Greenhouse instrument component, preparation method and the greenhouse instrument with it |
| CN109413766A (en) * | 2017-08-18 | 2019-03-01 | 无锡格菲电子薄膜科技有限公司 | Electric radiant Heating Film external lead wire device, the Electric radiant Heating Film with external lead wire device |
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2019
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Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1406288A (en) * | 1972-10-17 | 1975-09-17 | Lee H G | Silvered mica capacitors |
| CN2197785Y (en) * | 1994-08-23 | 1995-05-17 | 杨阳 | Multi-layer electric heating element |
| EP0894935A1 (en) * | 1997-07-31 | 1999-02-03 | Saint-Gobain Vitrage | Insulating glazing element |
| CN2904541Y (en) * | 2006-05-01 | 2007-05-23 | 王克政 | Electric heater |
| JP2008108716A (en) * | 2006-09-27 | 2008-05-08 | Kyoto Elex Kk | Conductive paste composition for low-temperature firing |
| CN103281813A (en) * | 2013-05-20 | 2013-09-04 | Kmt纳米科技（香港）有限公司 | Nanocomposite microcrystalline electrothermal film and preparation method thereof |
| CN103997800A (en) * | 2013-08-26 | 2014-08-20 | Kmt纳米科技有限公司 | Connecting process of far infrared nano electrothermal film electrode blind holes and wire |
| CN203676165U (en) * | 2014-01-06 | 2014-07-02 | 黄伟聪 | Electric heating garment |
| CN104411028A (en) * | 2014-11-07 | 2015-03-11 | 广东爱乐活科技有限公司 | Electrode connection structure of electrothermal film, preparation method of electrode connection structure and heating device |
| CN204993900U (en) * | 2015-08-10 | 2016-01-20 | 烟台一诺电子材料有限公司 | Heating device based on flake graphite electrode |
| CN109413766A (en) * | 2017-08-18 | 2019-03-01 | 无锡格菲电子薄膜科技有限公司 | Electric radiant Heating Film external lead wire device, the Electric radiant Heating Film with external lead wire device |
| CN107514119A (en) * | 2017-08-21 | 2017-12-26 | 四川省安德盖姆石墨烯科技有限公司 | A kind of graphene floor heating tiles and its production method |
| CN109237593A (en) * | 2018-10-25 | 2019-01-18 | 陆建军 | Greenhouse instrument component, preparation method and the greenhouse instrument with it |
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Application publication date: 20200403 |
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