CN111132394A - Preparation method of carbon crystal/ceramic electric heating plate - Google Patents
Preparation method of carbon crystal/ceramic electric heating plate Download PDFInfo
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- CN111132394A CN111132394A CN201911254632.XA CN201911254632A CN111132394A CN 111132394 A CN111132394 A CN 111132394A CN 201911254632 A CN201911254632 A CN 201911254632A CN 111132394 A CN111132394 A CN 111132394A
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- Prior art keywords
- carbon crystal
- carbon
- preparation
- electric heating
- heating plate
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000013078 crystal Substances 0.000 title claims abstract description 44
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 42
- 238000005485 electric heating Methods 0.000 title claims abstract description 19
- 239000000919 ceramic Substances 0.000 title claims abstract description 18
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000000243 solution Substances 0.000 claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 20
- 229920000049 Carbon (fiber) Polymers 0.000 claims abstract description 19
- 239000004917 carbon fiber Substances 0.000 claims abstract description 19
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 14
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 239000011259 mixed solution Substances 0.000 claims abstract description 8
- VATRWWPJWVCZTA-UHFFFAOYSA-N 3-oxo-n-[2-(trifluoromethyl)phenyl]butanamide Chemical compound CC(=O)CC(=O)NC1=CC=CC=C1C(F)(F)F VATRWWPJWVCZTA-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 9
- 238000000498 ball milling Methods 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 6
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 2
- 239000010419 fine particle Substances 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims description 2
- 229920000647 polyepoxide Polymers 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 239000008096 xylene Substances 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 11
- 238000002791 soaking Methods 0.000 abstract description 5
- 238000001035 drying Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 239000000835 fiber Substances 0.000 description 11
- 239000002994 raw material Substances 0.000 description 8
- 239000000758 substrate Substances 0.000 description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 229920002451 polyvinyl alcohol Polymers 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000013081 microcrystal Substances 0.000 description 1
- 229910021392 nanocarbon Inorganic materials 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Classifications
-
- 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—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
- H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
- H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
-
- 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
- H05B3/28—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
Landscapes
- Battery Electrode And Active Subsutance (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
A preparation method of a carbon crystal/ceramic electric heating plate relates to a preparation method of an electric heating plate, and the preparation method of carbon crystal powder comprises the following steps: the carbon fiber is crushed into the length of less than 1cm, and then is put into a mixed solution of 35 percent dimethylbenzene, 55 percent acetone solution and 10 percent dipropylene glycol dimethyl ether solution for soaking and drying, and then is put into a ball mill for processing into carbon crystal powder. Preparing a carbon crystal plate: mixing carbon crystal powder and KH-570 according to the weight ratio of 50: 1, adding the auxiliary agent, using a mechanical ball to perform a 2-hour friction process, adding the curing agent, and coating the carbon crystal coating on the ceramic plate. The two ceramic plates are combined and then are provided with electrodes. The invention has simple and effective formula and process and excellent heating speed of the electric heating plate.
Description
Technical Field
The invention relates to a preparation method of an electric heating plate, in particular to a preparation method of a carbon crystal/ceramic electric heating plate.
Background
The carbon crystal is a nano-scale micro crystal extracted from modified carbon materials through a plurality of processes such as ball milling, softening, purifying, extracting and the like in a high-temperature and high-pressure environment. A large number of carbon crystals can rub and vibrate mutually under the action of an electric field, and the crystals perform Brookfield movement under the action of the electric field and generate a large amount of heat. Thereby realizing the conversion of 'electric energy → heat energy'. The electric-heat conversion efficiency of the carbon crystal reaches more than 99 percent. The material which is found to be the material with the highest conversion efficiency of electricity-heat is more than 20 percent higher than the most commonly used copper wire (electric heating wire). Patent No. CN 104202846A proposes a crimpable heat-generating thermoplastic material, the filler is graphite or carbon black, and the heat-generating effect is general. The patent No. CN 102932974A invents an electrothermal film taking colloidal graphite, conductive carbon black and nano carbon powder as electrothermal fillers, and has complex formula and is inconvenient for large-scale production.
The ceramic components are generally SiO2 and Al2O3, wherein the content of Al2O3 is about 30 percent, the content of SiO2 is about 50 percent-60 percent, and the thermal conductivity coefficient is higher than that of plastic, and the invention starts with the substrate and improves the heat dissipation speed of the electric heating plate.
The carbon crystal mainly comprises two parts of heat due to the carbon characteristics of the carbon crystal, wherein one part is work done by current in a circuit to a resistor, electric energy is converted into heat energy, the other part is vibration friction generated between crystal lattices under the action of external force because of the crystal structure of the carbon crystal, and carbon atoms in a heating body move with charges when alternating current is introduced to the carbon crystal to generate thermal motion.
Disclosure of Invention
The invention aims to provide a preparation method of a carbon crystal/ceramic electric heating plate, which changes the substrate of a popular electric heating plate, takes ceramic as the substrate to ensure that the electric heating plate can heat more quickly, and reduces the loss of electric energy.
The purpose of the invention is realized by the following technical scheme:
a preparation method of a carbon crystal/ceramic electric heating plate comprises the following preparation processes:
(1) preparing carbon crystals:
cutting short polyacrylonitrile carbon fibers, crushing the carbon fibers in a high-speed crusher, grinding the crushed polyacrylonitrile carbon fibers in a ball mill, and screening the obtained powder by a multistage vibrating screen to obtain fine particles with the average length of less than 1 cm;
(2) preparation of carbon crystal plate
Mixing carbon crystal powder and KH-570 according to the weight ratio of 50: 1 in a certain amount of ethanol solution, adding the auxiliary agent and the epoxy resin E-44 in proportion into the mixed solution, ball-milling for 2 hours, adding the T-31 curing agent in proportion, and then coating the mixture on a 5 x 5 ceramic plate by using a coater.
The preparation method of the carbon crystal/ceramic electric heating plate comprises the following steps of: 35% xylene, 55% acetone solution, 10% dipropylene glycol dimethyl ether solution.
The invention has the advantages and effects that:
the invention changes the substrate of the popular electric heating plate, takes the ceramic as the substrate to ensure that the electric heating plate can heat more quickly, and reduces the loss of electric energy. The invention has simple and effective formula and process and excellent heating effect of the electric heating plate.
Detailed Description
The present invention will be described in detail with reference to examples.
The preparation process of the invention comprises the following steps:
(1) preparing carbon crystal powder:
1) cutting carbon fiber into short fibers, crushing the fibers to an average length within 1cm by a crusher, weighing a mixed solution according to the weight ratio, wherein the solution comprises 35% of dimethylbenzene, 55% of acetone solution and 10% of dipropylene glycol dimethyl ether solution, and soaking the carbon fiber raw material in the solution prepared according to the weight ratio for 2 hours
2) After the materials are dried, the short-filament carbon fiber raw materials in the container are put into a planetary ball mill for deep processing, and ball milling is carried out for 16h, 20h, 24h, 28h, 32h, 36h and 40h at 350r/min respectively to obtain products, and the products are sieved to obtain the carbon crystal powder.
(2) Preparation of carbon crystal plate
1) Mixing carbon crystal powder and KH-570 according to the proportion of 50: 1 in an ethanol solution, and mechanically stirring the mixture at a warm state for two hours.
2) And adding an auxiliary agent and polyvinyl alcohol into the ethanol solution according to a ratio, and mechanically ball-milling for 2 hours. Adding the T-31 curing agent in proportion and uniformly mixing.
3) The dispersion was then spread evenly on a ceramic plate of 5 x 5cm in size using an applicator, cured at room temperature, and the above procedure was repeated to stack the two plates on top of each other with the coated side. Copper adhesive tapes are adhered to two ends of the heating plate to be used as electrodes.
Example 1
Preparing carbon crystal powder: cutting carbon fibers into short fibers, crushing the fibers to an average length within 1cm by using a crusher, weighing a mixed solution according to a weight ratio, wherein the solution comprises 35% of dimethylbenzene, 55% of acetone solution and 10% of dipropylene glycol dimethyl ether solution, soaking the carbon fiber raw materials in the prepared solution for 2 hours, drying, and then putting the short-fiber carbon fiber raw materials in a container into a planetary large ball mill for deep processing to obtain carbon crystal powder.
Mixing carbon crystal powder and KH-570 according to the proportion of 50: 1 in the proportion of 1, mechanically stirring the mixture for two hours in a warm state, adding an auxiliary agent and polyvinyl alcohol into the ethanol solution in proportion, and mechanically ball-milling the mixture for 2 hours. Adding the T-31 curing agent in proportion and uniformly mixing. The dispersion was then spread evenly on a 5 x 5cm ABS plastic plate using an applicator, cured at room temperature and the sample tested.
Example 2
Preparing carbon crystal powder: cutting carbon fibers into short fibers, crushing the fibers to an average length within 1cm by using a crusher, weighing a mixed solution according to a weight ratio, wherein the solution comprises 35% of dimethylbenzene, 55% of acetone solution and 10% of dipropylene glycol dimethyl ether solution, soaking the carbon fiber raw materials in the prepared solution for 2 hours, drying, and then putting the short-fiber carbon fiber raw materials in a container into a planetary large ball mill for deep processing to obtain carbon crystal powder.
Mixing carbon crystal powder and KH-570 according to the proportion of 50: 1 in the proportion of 1, mechanically stirring the mixture for two hours in a warm state, adding an auxiliary agent and polyvinyl alcohol into the ethanol solution in proportion, and mechanically ball-milling the mixture for 2 hours. Adding the T-31 curing agent in proportion and uniformly mixing. The dispersion was then spread evenly on epoxy plates 5 x 5cm in size with an applicator, cured at room temperature and the samples tested.
Example 3
Preparing carbon crystal powder: cutting carbon fibers into short fibers, crushing the fibers to an average length within 1cm by using a crusher, weighing a mixed solution according to a weight ratio, wherein the solution comprises 35% of dimethylbenzene, 55% of acetone solution and 10% of dipropylene glycol dimethyl ether solution, soaking the carbon fiber raw materials in the prepared solution for 2 hours, drying, and then putting the short-fiber carbon fiber raw materials in a container into a planetary large ball mill for deep processing to obtain carbon crystal powder.
Mixing carbon crystal powder and KH-570 according to the proportion of 50: 1 in the proportion of 1, mechanically stirring the mixture for two hours in a warm state, adding an auxiliary agent and polyvinyl alcohol into the ethanol solution in proportion, and mechanically ball-milling the mixture for 2 hours. Adding the T-31 curing agent in proportion and uniformly mixing. The dispersion was then spread evenly on a ceramic plate of 5 x 5cm size using an applicator, cured at room temperature and the sample tested.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (2)
1. A preparation method of a carbon crystal/ceramic electric heating plate is characterized by comprising the following preparation processes:
(1) preparing carbon crystals:
cutting short polyacrylonitrile carbon fibers, crushing the carbon fibers in a high-speed crusher, grinding the crushed polyacrylonitrile carbon fibers in a ball mill, and screening the obtained powder by a multistage vibrating screen to obtain fine particles with the average length of less than 1 cm;
(2) preparation of carbon crystal plate
Mixing carbon crystal powder and KH-570 according to the weight ratio of 50: 1 in a certain amount of ethanol solution, adding the auxiliary agent and the epoxy resin E-44 in proportion into the mixed solution, ball-milling for 2 hours, adding the T-31 curing agent in proportion, and then coating the mixture on a 5 x 5 ceramic plate by using a coater.
2. The method for preparing a carbon crystal/ceramic electric heating plate according to claim 1, wherein the weight ratio of the carbon crystal powder mixed solution is as follows: 35% xylene, 55% acetone solution, 10% dipropylene glycol dimethyl ether solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911254632.XA CN111132394A (en) | 2019-12-10 | 2019-12-10 | Preparation method of carbon crystal/ceramic electric heating plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911254632.XA CN111132394A (en) | 2019-12-10 | 2019-12-10 | Preparation method of carbon crystal/ceramic electric heating plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111132394A true CN111132394A (en) | 2020-05-08 |
Family
ID=70497961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911254632.XA Withdrawn CN111132394A (en) | 2019-12-10 | 2019-12-10 | Preparation method of carbon crystal/ceramic electric heating plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111132394A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1936434A (en) * | 2006-05-12 | 2007-03-28 | 陆上驰 | Carbon crystal electrothermo-material and preparing method |
| CN102838369A (en) * | 2012-09-19 | 2012-12-26 | 张永利 | Microcrystalline ceramic composite electrothermal material and method for preparing far-infrared ceramic electrothermal plate by using same |
| CN107493612A (en) * | 2017-07-03 | 2017-12-19 | 孙克智 | Flexible nano carbon composite high temperature electric heating film and preparation method thereof |
| CN107829125A (en) * | 2016-11-11 | 2018-03-23 | 深圳瑞之谷医疗科技有限公司 | Substrate, heating plate, humidification machine and its processing method are used in one kind heating |
-
2019
- 2019-12-10 CN CN201911254632.XA patent/CN111132394A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1936434A (en) * | 2006-05-12 | 2007-03-28 | 陆上驰 | Carbon crystal electrothermo-material and preparing method |
| CN102838369A (en) * | 2012-09-19 | 2012-12-26 | 张永利 | Microcrystalline ceramic composite electrothermal material and method for preparing far-infrared ceramic electrothermal plate by using same |
| CN107829125A (en) * | 2016-11-11 | 2018-03-23 | 深圳瑞之谷医疗科技有限公司 | Substrate, heating plate, humidification machine and its processing method are used in one kind heating |
| CN107493612A (en) * | 2017-07-03 | 2017-12-19 | 孙克智 | Flexible nano carbon composite high temperature electric heating film and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 葛铁军: "碳晶的制备与标征及碳晶板中的发热机理研究", 《沈阳化工大学学报》 * |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200508 |
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