CN113773065A - Porous ceramic matrix with high liquid absorption rate and heating element - Google Patents
Porous ceramic matrix with high liquid absorption rate and heating element Download PDFInfo
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- CN113773065A CN113773065A CN202111131210.0A CN202111131210A CN113773065A CN 113773065 A CN113773065 A CN 113773065A CN 202111131210 A CN202111131210 A CN 202111131210A CN 113773065 A CN113773065 A CN 113773065A
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- 239000000919 ceramic Substances 0.000 title claims abstract description 123
- 239000011159 matrix material Substances 0.000 title claims abstract description 96
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 71
- 239000007788 liquid Substances 0.000 title claims abstract description 70
- 238000010438 heat treatment Methods 0.000 title claims abstract description 42
- 239000011148 porous material Substances 0.000 claims abstract description 44
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 20
- 239000002245 particle Substances 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 10
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 9
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- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 8
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 8
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 8
- 239000005642 Oleic acid Substances 0.000 claims description 8
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 8
- 239000004793 Polystyrene Substances 0.000 claims description 8
- 229910002804 graphite Inorganic materials 0.000 claims description 8
- 239000010439 graphite Substances 0.000 claims description 8
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000004005 microsphere Substances 0.000 claims description 8
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 8
- 229920002223 polystyrene Polymers 0.000 claims description 8
- 229910021426 porous silicon Inorganic materials 0.000 claims description 8
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- 239000000377 silicon dioxide Substances 0.000 claims description 8
- 238000005266 casting Methods 0.000 claims description 7
- 238000001746 injection moulding Methods 0.000 claims description 7
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- 241000208125 Nicotiana Species 0.000 abstract description 29
- 235000002637 Nicotiana tabacum Nutrition 0.000 abstract description 29
- 238000000889 atomisation Methods 0.000 abstract description 15
- 239000000779 smoke Substances 0.000 abstract description 11
- 239000012466 permeate Substances 0.000 abstract description 9
- 239000000843 powder Substances 0.000 abstract description 6
- 239000011521 glass Substances 0.000 abstract description 3
- 230000035515 penetration Effects 0.000 abstract description 3
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 12
- 239000000203 mixture Substances 0.000 description 6
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- 230000007547 defect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/14—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on silica
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- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/0038—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by superficial sintering or bonding of particulate matter
- C04B38/0041—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by superficial sintering or bonding of particulate matter the particulate matter having preselected particle sizes
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- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
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Abstract
The invention relates to the technical field of porous ceramics, in particular to a porous ceramic matrix with high liquid absorption rate and a heating element, which comprise the following raw materials in parts by weight: 25-90 parts of porous silica microspheres, 10-30 parts of glass powder, 0.1-25 parts of diatomite, 0.1-10 parts of quartz sand and 0.1-10 parts of alumina. The porous ceramic matrix has the characteristics of small pores, high liquid absorption rate and high liquid absorption rate compared with porosity, is convenient for tobacco tar to permeate and atomize, improves the atomization rate of the tobacco tar, increases the smoke amount and improves the experience of a user; the adopted porous silica microspheres have the characteristics of micropores, small and many pores, and are more convenient for penetration of tobacco tar compared with the conventional porous ceramic matrix with large pore diameter; the heating body prepared by utilizing the porous ceramic matrix has the characteristics of small pores, high liquid absorption rate and high liquid absorption rate compared with porosity, is convenient for tobacco tar permeation and atomization, improves the atomization rate of the tobacco tar, increases the smoke amount and improves the experience of users.
Description
Technical Field
The invention relates to the technical field of porous ceramics, in particular to a porous ceramic matrix with high liquid absorption rate and a heating element.
Background
The heating body is used as one of the core components of the electronic atomization device, and compared with the traditional cotton core or glass fiber rope, the heating body has the advantages of strong lipophilicity, uniform heating, high use temperature and the like. However, the field of use of the porous ceramic atomizer is greatly limited due to the variety of the use place and the atomized liquid.
At present, amorphous solid powder ceramic powder is mostly adopted as the porous ceramic matrix adopted in the market, so that the prepared porous ceramic generally has the defects of insufficient oil storage and oil locking functions, oil leakage and the like, and the problems of large porosity and high porosity compared with the liquid absorption rate and high porosity of the porous ceramic matrix cause the problem of low tobacco tar utilization rate.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide the porous ceramic matrix with the high liquid absorption rate, which has the characteristics of small pores, high liquid absorption rate and higher liquid absorption rate than porosity, is convenient for tobacco tar to permeate and atomize, improves the atomization rate of the tobacco tar, increases the smoke amount and improves the experience of a user; the porous silica microspheres have the characteristics of micropores and small and many pores, so that the tobacco tar is more convenient to permeate compared with the conventional porous ceramic matrix with large pore diameter.
Another object of the present invention is to provide a heating element with high liquid absorption rate, which has the characteristics of small pores, high liquid absorption rate, and higher liquid absorption rate than porosity by using a porous ceramic substrate with high liquid absorption rate, thereby facilitating the penetration and atomization of tobacco tar, increasing the atomization rate of tobacco tar, increasing the amount of smoke, and improving the experience of users.
The purpose of the invention is realized by the following technical scheme: a porous ceramic matrix with high liquid absorption rate comprises the following raw materials in parts by weight:
the porous ceramic matrix has the characteristics of small pores, high liquid absorption rate and high liquid absorption rate compared with porosity, is convenient for tobacco tar to permeate and atomize, improves the atomization rate of the tobacco tar, increases the smoke amount and improves the experience of a user. The adopted porous silica microspheres have the characteristics of micropores, small and many pores, and are more convenient for tobacco tar permeation compared with the conventional porous ceramic matrix with large pore diameter; the adopted glass powder and diatomite have the advantages of firmness, wear resistance, high temperature resistance, wide sources and low cost, and the strength and toughness of the porous ceramic matrix can be ensured by adding the glass powder and the diatomite into the raw materials of the porous ceramic matrix; the diatomite and the quartz sand, as ceramic bone powder, have the advantages of firmness, wear resistance, high temperature resistance, wide sources and low cost, and can ensure the strength and toughness of the porous ceramic matrix; the addition of the pore-forming agent can ensure that the sintered porous ceramic matrix has the advantages of good strength, high porosity, small pore size and uniform distribution.
Preferably, the particle size of the porous silica microspheres is 0.5-15 μm; the pore diameter of the micropores of the porous silicon dioxide microspheres is 0.2-2 mu m.
According to the invention, the porous silica microspheres can have a large number of pore channels, a regular and uniform microporous structure, the characteristics of large specific surface area, large oil absorption and strong adsorbability by limiting the parameters of the porous silica microspheres, and simultaneously, the porous silica microspheres also have high mechanical strength, strong adsorbability and good conductivity, and can further improve the comprehensive performance of the porous ceramic matrix prepared by using the porous silica microspheres.
Preferably, the pore-forming agent is at least one of PMMA, starch, carbon powder, wood dust, graphite, methyl methacrylate, polyvinyl chloride, polystyrene and oleic acid; more preferably, the pore-forming agent is a mixture of PMMA, graphite, polystyrene and oleic acid according to the weight ratio of 0.4-0.8:0.6-1.0:0.1-0.5: 0.8-1.2.
According to the invention, the pore-forming agent composed of the specific raw materials can cooperate with respective excellent performances, so that the sintered porous ceramic matrix has the advantages of good strength, high porosity, small pore size and uniform distribution, and pores with smaller sizes can be avoided during sintering of the porous ceramic matrix, so that the sintered continuous structure of the phase of the sintered porous ceramic matrix can not be broken by too many small pores, and the formed pores are mostly columnar pores, so that the porosity is high, and the bonding performance of the porous ceramic matrix is also enhanced due to the columnar pore structure.
Preferably, the porosity of the porous ceramic matrix is 40-70%, and the liquid absorption rate is 60-80%; the size of gaps stacked among particles in the porous ceramic matrix is 0.5-15 mu m, and the pore-forming agent in the porous ceramic matrix volatilizes with the pore diameter of 2-25 mu m.
Preferably, the porous ceramic matrix is formed by hot-press casting or injection molding; the porous ceramic matrix is sintered at the temperature of 600-1200 ℃.
The porous ceramic matrix in the invention can effectively overcome the defects existing in the traditional ceramic sintering process by adopting the forming method and the sintering temperature, so that the porous ceramic matrix has a firmer structure, thereby achieving the effect of reducing the shrinkage rate, improving the atomization rate of tobacco tar, increasing the smoke amount and improving the experience of users.
The invention also provides a heating body with high liquid absorption rate, which comprises the porous ceramic matrix and the metal heating sheet arranged on the lower surface of the porous ceramic matrix.
The heating body has the characteristics of small pores, high liquid absorption rate and high liquid absorption rate compared with porosity by adopting the porous ceramic matrix with high liquid absorption rate, is convenient for tobacco tar to permeate and atomize, improves the atomization rate of the tobacco tar, increases the smoke amount and improves the experience of a user; and set up the metal piece that generates heat at porous ceramic base member lower surface and be favorable to promoting the metal and generate heat the even heating of piece to porous ceramic base member, be convenient for atomize the tobacco tar.
The invention also provides a heating body with high liquid absorption rate, which comprises the porous ceramic matrix and the spiral heating wire arranged inside or outside the porous ceramic matrix.
The heating body has the characteristics of small pores, high liquid absorption rate and high liquid absorption rate compared with porosity by adopting the porous ceramic matrix with high liquid absorption rate, is convenient for tobacco tar to permeate and atomize, improves the atomization rate of the tobacco tar, increases the smoke amount and improves the experience of a user; and set up the spiral heater inside porous ceramic base member or outside and be favorable to promoting the even heating of spiral heater to porous ceramic base member, promoted thermal utilization ratio, be convenient for atomize the tobacco tar.
The invention also provides a heating element with high liquid absorption rate, which comprises the porous ceramic matrix and a heating circuit printed on the surface of the porous ceramic matrix.
The heating body has the characteristics of small pores, high liquid absorption rate and high liquid absorption rate compared with porosity by adopting the porous ceramic matrix with high liquid absorption rate, is convenient for tobacco tar to permeate and atomize, improves the atomization rate of the tobacco tar, increases the smoke amount and improves the experience of a user; and will generate heat the circuit printing and can effectively avoid in the past because add the too high circuit sintering that leads to generating heat of high temperature, lead to easily generating heat the circuit and break away from and produce the burnt flavor with porous ceramic base member, lead to product life to shorten greatly, be convenient for atomize the tobacco tar.
The invention has the beneficial effects that: the porous ceramic matrix has the characteristics of small pores, high liquid absorption rate and high liquid absorption rate compared with porosity, is convenient for tobacco tar to permeate and atomize, improves the atomization rate of the tobacco tar, increases the smoke amount and improves the experience of a user; the porous silica microspheres have the characteristics of micropores and small and many pores, so that the tobacco tar is more convenient to permeate compared with the conventional porous ceramic matrix with large pore diameter.
According to the heating body with the high liquid absorption rate, the porous ceramic substrate with the high liquid absorption rate is adopted, so that the heating body has the characteristics of small pores, high liquid absorption rate and high liquid absorption rate compared with porosity, the penetration and atomization of tobacco tar are facilitated, the atomization rate of the tobacco tar is improved, the smoke amount is increased, and the experience of a user is improved.
Drawings
FIG. 1 is a perspective view of a porous ceramic substrate provided with a metal heat generating sheet according to the present invention;
FIG. 2 is a perspective view of the porous ceramic substrate of the present invention provided with a spiral heating wire;
FIG. 3 is a schematic view of a heating circuit printed on the surface of the porous ceramic substrate according to the present invention;
fig. 4 is a schematic view of another viewing angle of the porous ceramic substrate surface printed with the heating circuit according to the present invention.
The reference signs are: 1-porous ceramic matrix, 2-metal heating sheet, 3-spiral heating wire and 4-heating circuit.
Detailed Description
For the understanding of those skilled in the art, the present invention will be further described with reference to the following examples and accompanying fig. 1-4, which are not intended to limit the present invention.
Example 1
A porous ceramic matrix with high liquid absorption rate comprises the following raw materials in parts by weight:
the particle size of the porous silicon dioxide microspheres is 0.5 mu m; the pore diameter of the micropores of the porous silica microspheres is 0.2 mu m.
The pore-forming agent is a mixture consisting of PMMA, graphite, polystyrene and oleic acid according to the weight ratio of 0.4:0.6:0.1: 0.8.
The porosity of the porous ceramic matrix 1 is 40%, and the liquid absorption rate is 60%; the size of gaps stacked among particles in the porous ceramic matrix 1 is 0.5 mu m, and the pore diameter of the pore-forming agent in the porous ceramic matrix 1 after volatilization is 2 mu m.
The porous ceramic matrix 1 is formed by hot-press casting or injection molding; the porous ceramic matrix 1 is sintered at 600 ℃.
A heating element with high liquid absorption rate comprises the porous ceramic matrix 1 and a metal heating sheet 2 arranged on the lower surface of the porous ceramic matrix 1.
Example 2
A porous ceramic matrix with high liquid absorption rate comprises the following raw materials in parts by weight:
the particle size of the porous silicon dioxide microspheres is 5 micrometers; the pore diameter of the micropores of the porous silica microspheres is 0.5 mu m.
The pore-forming agent is a mixture consisting of PMMA, graphite, polystyrene and oleic acid according to the weight ratio of 0.5:0.7:0.2: 0.9.
The porosity of the porous ceramic matrix 1 is 48%, and the liquid absorption rate is 65%; the size of gaps stacked among particles in the porous ceramic matrix 1 is 5 micrometers, and the pore diameter of the volatilized pore-forming agent in the porous ceramic matrix 1 is 8 micrometers.
The porous ceramic matrix 1 is formed by hot-press casting or injection molding; the porous ceramic matrix 1 is sintered at 750 ℃.
A heating element with high liquid absorption rate comprises the porous ceramic matrix 1 and a spiral heating wire 3 arranged inside or outside the porous ceramic matrix 1.
Example 3
A porous ceramic matrix with high liquid absorption rate comprises the following raw materials in parts by weight:
the particle size of the porous silicon dioxide microspheres is 7 microns; the pore diameter of the micropores of the porous silica microspheres is 1 micron.
The pore-forming agent is a mixture consisting of PMMA, graphite, polystyrene and oleic acid according to the weight ratio of 0.6:0.8:0.3: 1.0.
The porosity of the porous ceramic matrix 1 is 55%, and the liquid absorption rate is 70%; the size of gaps stacked among particles in the porous ceramic matrix 1 is 7 micrometers, and the pore diameter of the volatilized pore-forming agent in the porous ceramic matrix 1 is 13 micrometers.
The porous ceramic matrix 1 is formed by hot-press casting or injection molding; the porous ceramic matrix 1 is sintered at 900 ℃.
A heating element having a high liquid absorption rate comprises the porous ceramic base 1 and a heating line 4 printed on the surface of the porous ceramic base 1.
Example 4
A porous ceramic matrix with high liquid absorption rate comprises the following raw materials in parts by weight:
the particle size of the porous silicon dioxide microspheres is 12 microns; the pore diameter of the micropores of the porous silica microspheres is 1.5 mu m.
The pore-forming agent is a mixture consisting of PMMA, graphite, polystyrene and oleic acid according to the weight ratio of 0.4-0.8:0.6-1.0:0.1-0.5: 0.8-1.2.
The porosity of the porous ceramic matrix 1 is 63%, and the liquid absorption rate is 75%; the size of gaps stacked among particles in the porous ceramic matrix 1 is 12 microns, and the pore diameter of the pore-forming agent in the porous ceramic matrix 1 after volatilization is 19 microns.
The porous ceramic matrix 1 is formed by hot-press casting or injection molding; the porous ceramic matrix 1 is sintered at 1050 ℃.
A heating element with high liquid absorption rate comprises the porous ceramic matrix 1 and a metal heating sheet 2 arranged on the lower surface of the porous ceramic matrix 1.
Example 5
A porous ceramic matrix with high liquid absorption rate comprises the following raw materials in parts by weight:
the particle size of the porous silicon dioxide microspheres is 15 micrometers; the pore diameter of the micropores of the porous silica microspheres is 2 microns.
The pore-forming agent is a mixture consisting of PMMA, graphite, polystyrene and oleic acid according to the weight ratio of 0.8:1.0:0.5: 1.2.
The porosity of the porous ceramic matrix 1 is 70%, and the liquid absorption rate is 80%; the size of gaps stacked among particles in the porous ceramic matrix 1 is 15 micrometers, and the pore diameter of the volatilized pore-forming agent in the porous ceramic matrix 1 is 25 micrometers.
The porous ceramic matrix 1 is formed by hot-press casting or injection molding; the porous ceramic matrix 1 is sintered at 1200 ℃.
A heating element with high liquid absorption rate comprises the porous ceramic matrix 1 and a spiral heating wire 3 arranged inside or outside the porous ceramic matrix 1.
Comparative example 1
This comparative example differs from example 1 above in that: in the comparative example, silica particles are used instead of porous silica microspheres, and the rest of the comparative example is the same as example 1, and is not described again.
Comparative example 2
This comparative example differs from example 3 above in that: in this comparative example, PMMA was used instead of the pore-forming agent, and the rest of this comparative example is the same as example 3, and is not described again here.
The high liquid absorption porous ceramic substrates 1 obtained in examples 1, 3, 5 and comparative examples 1 to 2 were subjected to performance tests, and the results of the tests are shown in table 1 below:
porosity was tested according to archimedes drainage method, oil absorption time was tested with 10mm x 4mm parts under the same conditions; the Pore size was measured (by Auto Pore IV 9500(Micromeritics Instrument Corporation) and the strength was measured according to GBT 8489 and 2006 Fine ceramic compression Strength test method).
TABLE 1
| Item | Porosity (%) | Liquid absorption Rate (%) | Average pore diameter (um) |
| Example 1 | 52 | 60 | 20 |
| Example 3 | 65 | 72 | 23 |
| Example 5 | 69 | 78 | 24 |
| Comparative example 1 | 38 | 46 | 31 |
| Comparative example 2 | 36 | 38 | 15 |
The comparison among the examples 1, 3 and 5 shows that the porous ceramic matrix 1 prepared by the invention has higher liquid absorption rate, strength and porosity, and the comparison among the examples 1, 3 and 5 and the comparative examples 1-2 shows that the porous ceramic matrix 1 prepared by adding the porous silica microspheres and the mixed pore-forming agent has the advantages of high liquid absorption rate, high porosity, liquid absorption rate more than 5% higher than the porosity, small pore size and uniform distribution, and has wide market prospect and application value.
The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.
Claims (10)
1. A porous ceramic substrate having a high liquid absorption rate, characterized in that: the feed comprises the following raw materials in parts by weight:
2. the porous ceramic matrix with high liquid absorption rate according to claim 1, wherein: the particle size of the porous silicon dioxide microspheres is 0.5-15 μm; the pore diameter of the micropores of the porous silicon dioxide microspheres is 0.2-2 mu m.
3. The porous ceramic matrix with high liquid absorption rate according to claim 1, wherein: the raw material of the porous ceramic matrix also comprises 1-40 parts of pore-forming agent; the pore-forming agent is at least one of PMMA, starch, carbon powder, wood dust, graphite, methyl methacrylate, polyvinyl chloride, polystyrene and oleic acid.
4. The porous ceramic matrix with high liquid absorption rate according to claim 1, wherein: the size of the gaps stacked among the porous ceramic matrix particles is 0.5-15 mu m, and the pore diameter of the pore-forming agent in the porous ceramic matrix after volatilization is 2-25 mu m.
5. The porous ceramic matrix with high liquid absorption rate according to claim 1, wherein: the porosity of the porous ceramic matrix is 40-70%, and the liquid absorption rate is 60-80%.
6. The porous ceramic matrix with high liquid absorption rate according to claim 1, wherein: the porous ceramic matrix is formed by hot-press casting or injection molding.
7. The porous ceramic matrix with high liquid absorption rate according to claim 1, wherein: the porous ceramic matrix is sintered at the temperature of 600-1200 ℃.
8. A heating element with high liquid absorption rate is characterized in that: comprising the porous ceramic base according to any one of claims 1 to 7, and a metal heat generating sheet disposed on a lower surface of the porous ceramic base.
9. A heating element with high liquid absorption rate is characterized in that: comprising the porous ceramic substrate according to any one of claims 1 to 7, and a spiral heater disposed inside or outside the porous ceramic substrate.
10. A heating element with high liquid absorption rate is characterized in that: comprising the porous ceramic matrix according to any one of claims 1 to 7, and a heating circuit printed on a surface of the porous ceramic matrix.
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