CN110677931B - A1-grade flame-retardant fireproof electric heating plate and preparation method thereof - Google Patents
A1-grade flame-retardant fireproof electric heating plate and preparation method thereof Download PDFInfo
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- CN110677931B CN110677931B CN201910953561.6A CN201910953561A CN110677931B CN 110677931 B CN110677931 B CN 110677931B CN 201910953561 A CN201910953561 A CN 201910953561A CN 110677931 B CN110677931 B CN 110677931B
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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
-
- 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
-
- 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
- H05B3/10—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
-
- 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
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
- H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
- H05B3/265—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an inorganic material, e.g. ceramic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Abstract
The invention relates to a flame-retardant fireproof electric heating plate. A1-level flame-retardant fireproof electric heating plate comprises two high-temperature-resistant mica sheets, wherein one of the opposite surfaces of the two high-temperature-resistant mica sheets is coated with an inorganic high-temperature-resistant adhesive, the other one of the opposite surfaces of the two high-temperature-resistant mica sheets is coated with a high-temperature-resistant graphitized carbon-based heating coating, then the two high-temperature-resistant graphitized carbon-based heating coating are compounded and pressed for 2 to 4 hours at the temperature of between 80 and 100 ℃, and two conductive copper foils are arranged and led out in the compounded surface to be used as a positive electrode and a negative electrode. The electric heating plate has low cost, and the heat-resisting grade can reach A1 grade.
Description
Technical Field
The invention relates to an electric heating plate, in particular to a flame-retardant fireproof electric heating plate and a preparation method thereof.
Background
In recent years, plane electric heating products have the characteristics of energy conservation, environmental protection, simple and convenient installation, rapid temperature rise and the like, and are increasingly popularized. However, most of the existing electric heating plates are made of epoxy resin materials such as PCB (printed circuit board) with a flame retardant grade of V0 and coated with graphene conductive paper or carbon fiber conductive paper, the PCB epoxy resin materials, the graphene conductive paper and the carbon fiber conductive paper are dissolved and embrittled and damaged when resisting temperature within 200 ℃, and particularly, the electric heating plates are installed on a cement floor as a floor heater or hung on a wall as a heating floor, so that potential safety hazards of burning, smoking and firing exist.
CN 110213845 discloses a graphene high-temperature resistant mica electric heating plate: the mica insulation board comprises a surface decoration layer, an upper mica insulation layer, a graphene heating layer and a lower mica insulation layer which are fixedly connected from top to bottom in sequence. The heat resistance of the electric heating plate can reach more than 300 ℃. However, it is well known that graphene is expensive, resulting in high cost of such electric heating plates; the surface decoration layer is a PET heat transfer film or a UV color printing decoration layer, and the heat transfer film can only bear the temperature of 150 ℃, so that the heat resistance of the combination of the graphene and mica insulation layer is reduced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an A1-level flame-retardant fireproof electric heating plate and a preparation method thereof. The electric heating plate has low cost, and the heat-resisting grade can reach A1 grade.
The invention relates to an A1-grade flame-retardant fireproof electric heating plate which comprises two high-temperature-resistant mica sheets, wherein one of the opposite surfaces of the two high-temperature-resistant mica sheets is coated with an inorganic high-temperature-resistant adhesive, the other one of the opposite surfaces of the two high-temperature-resistant mica sheets is coated with a high-temperature-resistant graphitized carbon-based heating coating and then is compounded, and two conductive copper foils are arranged and led out in the compounded surface to be used as a positive electrode and a negative electrode.
The electric heating picture is made of the A1-level flame-retardant fireproof electric heating plate, and the exposed surface of the high-temperature resistant mica sheet is also provided with a decorative picture.
The A1-grade flame-retardant fireproof electric heating plate is characterized in that the temperature resistance of the high-temperature resistant mica sheet is greater than 850 ℃. The A1-level flame-retardant fireproof electric heating plate is characterized in that the graphitized carbon-based heating coating is a high-purity graphite carbon-based heating coating, and the temperature resistance of the graphitized carbon-based heating coating is higher than 1300 ℃.
The A1-grade flame-retardant fireproof electric heating plate is characterized in that the heat-resistant temperature of the inorganic high-temperature-resistant adhesive is 1400 ℃.
The A1-level flame-retardant fireproof electric heating plate is characterized in that the high-temperature resistant mica sheet is compounded with glass fiber cloth.
The preparation method of the A1-level flame-retardant fireproof electric heating plate comprises the following steps:
step one, uniformly stirring the prepared graphitized carbon-based heating coating with the required power resistance for 10-30 minutes by using a stirrer for later use;
step two, uniformly stirring the inorganic high-temperature-resistant adhesive for about 3 minutes for later use;
removing dust and impurities on the surface of the high-temperature resistant mica plate by using an electrostatic roller for later use;
coating the graphitized carbon-based heating coating on the mica plate by using a screen printing machine;
putting the mica plate coated with the heating coating into an oven with the heating temperature of 180-200 ℃ and baking for 40-60 minutes;
step six, pasting conductive copper foils at two ends of the baked graphitized carbon-based heating mica plate;
step seven, coating an inorganic adhesive on the other mica plate by using a gluing machine, and standing for 10 minutes;
step eight, overlapping the glued mica plate and the mica plate coated with the heating slurry;
pressing for 2-4 hours at the temperature of 80-100 ℃ by using hot-pressing equipment, and completely curing the inorganic adhesive to firmly bond two mica plates into a composite mica plate;
tenthly, arranging electrode positions of conductive copper foils on the hot-pressed composite mica plate, and punching two circular electrode holes; welding high-temperature-resistant electric wires on the two circular electrode holes, leading out positive and negative power lines, additionally installing rubber rings with adaptive calibers, injecting sealant, and sealing and fixing the wiring ends to obtain the A1-grade flame-retardant fireproof electric heating plate.
The graphitized carbon-based heating coating with high heat resistance and low cost is selected, the cost is about 2000 times of that of graphene, the efficiencies of the graphitized carbon-based heating coating and the graphene are basically the same, and the cost is greatly saved; the invention directly coats the coating on the mica plate, and the production is very simple and convenient. Meanwhile, the inorganic adhesive with heat resistance up to 1400 ℃ is selected, so that the heat-resistant temperature of the electric heating plate is ensured to be more than 750 ℃, the requirement of heat resistance A1-level non-combustibility is met, and the fire disaster is completely eradicated.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
fig. 2 is an external view of the present invention.
Detailed Description
As shown in fig. 1 and 2, the A1-level flame-retardant fireproof electric heating plate includes two high-temperature resistant mica sheets 1 and 2, one of the opposite surfaces of the two high-temperature resistant mica sheets is coated with an inorganic high-temperature resistant adhesive, and the other is coated with a graphitized carbon-based heating coating 3, and then the two conductive copper foils 4 are arranged in and led out of the composite surface as positive and negative electrodes.
The electric heating picture is made of the A1-level flame-retardant fireproof electric heating plate, and a decorative picture is further arranged on the exposed surface of the high-temperature resistant mica sheet.
The A1-grade flame-retardant fireproof electric heating plate is characterized in that the temperature resistance of the high-temperature resistant mica sheet is greater than 850 ℃.
The A1-grade flame-retardant fireproof electric heating plate is characterized in that the graphitized carbon-based heating coating is a high-purity graphite carbon-based heating coating, and the temperature resistance of the graphitized carbon-based heating coating is higher than 1300 ℃.
The A1-grade flame-retardant fireproof electric heating plate is characterized in that the heat-resistant temperature of the inorganic high-temperature-resistant adhesive is 1400 ℃.
The A1-level flame-retardant fireproof electric heating plate is characterized in that the high-temperature resistant mica sheet further comprises glass fiber cloth.
The preparation method of the A1-level flame-retardant fireproof electric heating plate comprises the following steps:
step one, uniformly stirring the prepared graphitized carbon-based heating coating with the required power resistance for 10-30 minutes by using a stirrer for later use;
step two, stirring the inorganic high-temperature-resistant adhesive uniformly for about 3 minutes for later use;
removing dust and impurities on the surface of the high-temperature resistant mica plate by using an electrostatic roller for later use;
coating the graphitized carbon-based heating coating on the mica plate by using a screen printing machine;
putting the mica plate coated with the heating coating into an oven with the heating temperature of 180-200 ℃ and baking for 40-60 minutes;
step six, pasting conductive copper foils at two ends of the baked graphitized carbon-based heating mica plate;
step seven, coating an inorganic adhesive on the other mica plate by using a gluing machine, and standing for 10 minutes;
step eight, overlapping the glued mica plate and the mica plate coated with the heating slurry;
pressing for 2-4 hours at the temperature of 80-100 ℃ by using hot-pressing equipment, and completely curing the inorganic adhesive to firmly bond the two mica plates into the composite mica plate;
step ten, arranging electrode positions of the conductive copper foil on the hot-pressed composite mica plate, and punching two circular electrode holes; welding high-temperature-resistant wires on the two circular electrode holes, leading out positive and negative power lines, additionally installing rubber rings with adaptive calibers, injecting sealant, and sealing and fixing the wiring end to obtain the A1-grade flame-retardant fireproof electric heating plate.
Sampling inspection is carried out on the A1-grade flame-retardant and fireproof electric heating plate according to the standard A (A1) of GB8624-2012 'grading of combustion performance of building materials and products', five batches of 1 sample are extracted from each batch, and the inspection results are as follows:
table:
Claims (4)
- a1-level flame-retardant fireproof electric heating plate comprises two high-temperature-resistant mica sheets, wherein one of the opposite surfaces of the two high-temperature-resistant mica sheets is coated with an inorganic high-temperature-resistant adhesive, and the other one of the opposite surfaces of the two high-temperature-resistant mica sheets is coated with a graphitized carbon-based heating coating with the temperature resistance of more than 1300 ℃, and then the graphitized carbon-based heating coating is compounded, two conductive copper foils are arranged in and led out of the compounded surface to serve as a positive electrode and a negative electrode, the heat-resistant temperature of the inorganic high-temperature-resistant adhesive is 1400 ℃, and the preparation method is characterized by comprising the following steps of:step one, uniformly stirring the prepared graphitized carbon-based heating coating with the required power resistance for 10-30 minutes by using a stirrer for later use;step two, uniformly stirring the inorganic high-temperature-resistant adhesive for about 3 minutes for later use;removing dust and impurities on the surface of the high-temperature resistant mica plate by using an electrostatic roller for later use;coating the graphitized carbon-based heating coating on the mica plate by using a screen printing machine;putting the mica plate coated with the heating coating into an oven with the heating temperature of 180-200 ℃ to bake for 40-60 minutes;step six, adhering conductive copper foils with the width not less than 1cm to two ends of the baked graphitized carbon-based heating mica plate;step seven, coating an inorganic adhesive on the other mica plate by using a gluing machine, and standing for 10 minutes;step eight, overlapping the glued mica plate and the mica plate coated with the heating coating;pressing for 2-4 hours at the temperature of 80-100 ℃ by using hot-pressing equipment, and completely curing the inorganic adhesive to firmly bond the two mica plates into the composite mica plate;step ten, arranging electrode positions of the conductive copper foil on the hot-pressed composite mica plate, and punching two circular electrode holes; welding high-temperature-resistant electric wires on the two circular electrode holes, leading out positive and negative power lines, additionally installing rubber rings with adaptive calibers, injecting sealant, and sealing and fixing the wiring ends to obtain the A1-grade flame-retardant fireproof electric heating plate.
- 2. The method for preparing a grade A1 fire-retardant and fireproof electric hot plate according to claim 1, wherein the temperature resistance of the high-temperature resistant mica sheets is greater than 850 ℃.
- 3. The method for preparing a grade A1 fire-retardant and fireproof electric heating plate according to claim 1, wherein the high-temperature resistant mica sheet further comprises glass fiber cloth compounded with the mica sheet.
- 4. The use of the method of claim 1 in the preparation of floor heating, wall-mounted heating, and electric heaters.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910953561.6A CN110677931B (en) | 2019-09-29 | 2019-09-29 | A1-grade flame-retardant fireproof electric heating plate and preparation method thereof |
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| CN201910953561.6A CN110677931B (en) | 2019-09-29 | 2019-09-29 | A1-grade flame-retardant fireproof electric heating plate and preparation method thereof |
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| CN110677931A CN110677931A (en) | 2020-01-10 |
| CN110677931B true CN110677931B (en) | 2023-03-17 |
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| CN113152813A (en) * | 2020-12-11 | 2021-07-23 | 新疆普捷人居科技有限公司 | Construction method of graphene carbon nano heating coating |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87103537A (en) * | 1987-05-16 | 1988-12-07 | 北京市太阳能研究所 | A kind of novel electric heating body and technology |
| WO2008085550A2 (en) * | 2006-08-02 | 2008-07-17 | Battelle Memorial Institute | Electrically conductive coating composition |
| CN108515746A (en) * | 2018-02-02 | 2018-09-11 | 哈尔滨工程大学 | A kind of fire proofing and preparation method based on fireproof coating |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202150955U (en) * | 2011-07-28 | 2012-02-22 | 石伟 | Nano-carbon crystal far-infrared mica electric hot plate |
| CN103627241A (en) * | 2012-08-22 | 2014-03-12 | 深圳市生晟新能源科技有限公司 | Doped graphite electrothermal paint with high-efficient far-infrared emission capacity |
| CN102838369B (en) * | 2012-09-19 | 2013-09-11 | 张永利 | Microcrystalline ceramic composite electrothermal material and method for preparing far-infrared ceramic electrothermal plate by using same |
| CN106162957A (en) * | 2016-09-07 | 2016-11-23 | 芜湖桑乐金电子科技有限公司 | Fire-retardant carbon crystal heating panel and preparation method thereof |
| CN109587843A (en) * | 2018-12-12 | 2019-04-05 | 杭州华暖科技有限公司 | A kind of electric heating electric hot plate and preparation method thereof |
| CN110213845A (en) * | 2019-07-04 | 2019-09-06 | 青岛墨金烯碳新材料科技有限公司 | A kind of graphene high temperature resistant mica electric hot plate and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87103537A (en) * | 1987-05-16 | 1988-12-07 | 北京市太阳能研究所 | A kind of novel electric heating body and technology |
| WO2008085550A2 (en) * | 2006-08-02 | 2008-07-17 | Battelle Memorial Institute | Electrically conductive coating composition |
| CN108515746A (en) * | 2018-02-02 | 2018-09-11 | 哈尔滨工程大学 | A kind of fire proofing and preparation method based on fireproof coating |
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