CN109721343A - Porous ceramics raw material, porous ceramics and the preparation method and application thereof - Google Patents
Porous ceramics raw material, porous ceramics and the preparation method and application thereof Download PDFInfo
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Abstract
The present invention relates to a kind of porous ceramics raw material, porous ceramics and the preparation method and application thereof, the porous ceramics raw material includes the component of following mass percentage: aluminium oxide 40%~80%, silica 1 %~20%, titanium dioxide 1%~20% and rush burn agent 1%~20%.Aluminium oxide 40%~80%, silica 1 %~20%, titanium dioxide 1%~20% and the raw material for promoting to burn agent 1%~22%, it is not necessary that pore creating material is added, can prepare aperture be 10 μm~50 μm, porous ceramics of the porosity up to 30%~70%, Oil Guide is smooth, heating circuit is plated on its surface and does not penetrate into hole the problem for causing short circuit or fever unevenly to cause paste burnt, oil storage and Oil Guide functional component of the Oil Guide cotton as atomization core can be substituted, amount of smoke, mouthfeel can be significantly promoted, is prolonged the service life.
Description
Technical field
The present invention relates to ceramic material and technology field, more particularly to porous ceramics raw material, porous ceramics and its
Preparation method and application.
Background technique
Electronic cigarette is a kind of electronic product for imitating cigarette, there is appearance, smog, taste and the feeling as cigarette,
It is by the means such as atomization, after tobacco tar is become steam, a kind of product for allowing user to suck.
Electronic smoke atomizer core is the core component of electronic cigarette, it determines that electronic cigarette generates size, the mouthfeel of amount of smoke
Deng.For traditional electronic smoke atomizer core using stainless steel material as material of main part, inside is constituted atomization with Oil Guide cotton and heating wire
The defects of interior storehouse, and the problem of Oil Guide cotton atomizer wicking is brought is the easy burning of atomizer, whole poor taste, service life is short.
Summary of the invention
Based on this, it is necessary in view of the above-mentioned problems, providing a kind of porous ceramics raw material, be made of this porous ceramics raw material
Porous ceramics can substitute oil storage and Oil Guide functional component of the Oil Guide cotton as atomization core, can significantly promote amount of smoke, mouth
Sense, prolongs the service life.
A kind of porous ceramics raw material, the component including following mass percentage: aluminium oxide 40%~80%, silica
1%~20%, titanium dioxide 1%~20% and rush burn agent 1%~22%.
Above-mentioned porous ceramics raw material, using aluminium oxide 40%~80%, silica 1 %~20%, titanium dioxide 1%~
20% and promote to burn agent 1%~22%, it is not necessary that pore creating material is added, can prepare aperture be 10 μm~50 μm, porosity up to 30%~
70% porous ceramics, Oil Guide is smooth, and heating circuit, which is plated on its surface and does not penetrate into hole, causes short circuit or fever uneven
The problem for causing paste burnt, can substitute oil storage and Oil Guide functional component of the Oil Guide cotton as atomization core, can significantly promote smog
Amount, mouthfeel, prolong the service life.
Promote burning agent in one of the embodiments, and is selected from one of sodium oxide molybdena, calcium oxide, iron oxide and magnesia or several
Kind.
Promote to burn agent in one of the embodiments, to be sodium oxide molybdena, calcium oxide, iron oxide and magnesia, sodium oxide molybdena, oxidation
The mass ratio of calcium, iron oxide and magnesia is 1~20:1~20:1~20:1~20.
The grain diameter of aluminium oxide is 20 μm~100 μm in one of the embodiments,.
The present invention also provides a kind of preparation methods of porous ceramics, and it is 10 μm that aperture, which is made, in the raw material of any of the above-described
~50 μm, porous ceramics of the porosity up to 30%~70%, are suitable for electronic cigarette.The preparation method of the porous ceramics include with
Lower step:
Take the component of following mass percentage: aluminium oxide 40%~80%, silica 1 %~20%, titanium dioxide
1%~20% burns agent 1%~20% with rush, binder is added, then mixing granulation, obtains mixing, and the partial size of mixing is 10 μm
~100 μm；
Mixing is dry-pressing formed, obtain biscuit；
Biscuit is subjected to dumping, sintering, obtains the green body of porous ceramics.
It is further comprising the steps of in one of the embodiments: after the green body for obtaining porous ceramics, surface being carried out to green body
Processing, is surface-treated as polishing grinding and/or ultrasonic cleaning.
The grain diameter of mixing is 10 μm~100 μm in one of the embodiments,.
Dry-pressing formed pressure is in one of the embodiments,；95T~110T.
The process of dumping in one of the embodiments, are as follows: from room temperature heat 1H~3H to 200 ± 5 DEG C, reheat 1H~
10H to 500 ± 5 DEG C, 1H~10H to 900 ± 5 DEG C is reheated, then cooled to room temperature.
The process being sintered in one of the embodiments, are as follows: from room temperature heat 1H~5H to 500 ± 2 DEG C, reheat 3H~
10H to 1200 ± 10 DEG C, constant temperature 1H~3H.
Above-mentioned porous ceramics can be applied to electronic cigarette, as atomizer wicking.
Detailed description of the invention
Fig. 1 is the SEM figure of the porous ceramics of embodiment 5.
Specific embodiment
It to facilitate the understanding of the present invention, below will be to invention is more fully described.But the present invention can be to be permitted
Mostly different form is realized, however it is not limited to embodiment described herein.On the contrary, purpose of providing these embodiments is makes
It is more thorough and comprehensive to the understanding of the disclosure.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
The test method of actual conditions is not specified in the following example, according to conventional methods and conditions, or says according to commodity
The adjusting of bright book suggestion is selected.Reagents or instruments used without specified manufacturer is that can be obtained by commercially available purchase
Conventional products.
The present invention provides the component that a kind of porous ceramics raw material includes following mass percentage: aluminium oxide 40%~
80%, silica 1 %~20%, titanium dioxide 1%~20% and rush burn agent 1%~22%.
Using aluminium oxide 40%~80%, silica 1 %~20%, titanium dioxide 1%~20% and promote burn agent 1%~
22% raw material, it is not necessary that pore creating material is added, can prepare aperture be 10 μm~50 μm, porous pottery of the porosity up to 30%~70%
Porcelain, titanium dioxide increase the lipophilicity of porous ceramics, so that tobacco tar is may be inhaled the hole of porous ceramics, do not generate repulsion, Oil Guide is suitable
Freely, it is not penetrated into when the conductive material of heating circuit is plated on its surface and short circuit or fever is caused unevenly to cause paste coke in hole
Problem.
In one embodiment, promote to burn agent selected from one or more of sodium oxide molybdena, calcium oxide, iron oxide and magnesia.Compared with
Excellently, promote to burn agent to be sodium oxide molybdena, calcium oxide, iron oxide and magnesia, the quality of sodium oxide molybdena, calcium oxide, iron oxide and magnesia
Than for 1~20:1~20:1~20:1~20.
In one embodiment, the grain diameter of aluminium oxide is 20 μm~100 μm, makes shape between the particle of aluminium oxide and particle
At certain gap, and estimated desired hole is generated during dumping and sintering, and the alumina particle bonded.
In one embodiment, porous ceramics raw material further includes binder, and binder accounts for the quality hundred in porous ceramics raw material
Dividing content is 5%~20%
Above-mentioned porous ceramics can substitute oil storage and Oil Guide functional component of the Oil Guide cotton as atomization core, can significantly mention
Amount of smoke, mouthfeel are risen, and the hardness of aluminium oxide ceramics, corrosion resistance and wearability are good, can extend the service life of electronic cigarette.
The present invention also provides a kind of preparation methods of porous ceramics, and it is 10 μm that aperture, which is made, in the raw material of any of the above-described
~50 μm, porosity up to 30%~70%, suitable for the porous ceramics of electronic cigarette.The preparation method of the porous ceramics include with
Lower step:
S110: the component of following mass percentage: aluminium oxide 40%~80%, silica 1 %~20%, dioxy is taken
Change titanium 1%~20% and promote to burn agent 1%~22%, binder is added, by binder and aluminium oxide, silica, titanium dioxide
And promote to burn agent mixing granulation, obtain mixing.More preferably, the grain diameter of mixing is 10 μm~100 μm.
It is 5%~20% that the amount that binder is added, which accounts for the mass percentage in mixing,.In one embodiment, binder is
Polyvinyl alcohol.
S220: mixing is dry-pressing formed, obtain biscuit.
In one embodiment, dry-pressing formed pressure is 95T~110T, under the pressure of this range, the particle inside biscuit
Bonding appropriateness, there are certain gaps, for forming the hole for meeting design requirement.
S330: biscuit is subjected to dumping, sintering, obtains the green body of porous ceramics.
In one embodiment, the process of dumping are as follows: 1H~3H to 200 ± 5 DEG C is heated from room temperature, binder starts to melt,
And be discharged gradually, form thinner hole；1H~10H to 500 ± 5 DEG C is reheated, the rate of discharge of binder increases, with other
The bonding and expansion rate of ingredient are mutually coordinated, hole basic forming；1H~10H to 900 ± 5 DEG C is reheated, binder is substantially complete
Portion's discharge, hole finalizes the design almost, then cools to room temperature with the furnace naturally, avoid expanding with heat and contract with cold, and porous ceramics is made to become fragile or inside
Structural breakdown.
In one embodiment, the process of sintering are as follows: heat 1H~5H to 500 ± 2 DEG C from room temperature, be gradually warmed up, avoid rising
Warm rate is too fast and causes internal structure avalanche, influences pore structure；3H~10H to 1200 ± 10 DEG C of reheating, constant temperature 1H~
3H。
It is further comprising the steps of in one embodiment:
S440: after the green body for obtaining porous ceramics, being surface-treated green body, be surface-treated as polishing grinding and/or
Ultrasonic cleaning.Polishing grinding keeps billet surface smooth.Ultrasonic cleaning is ultrasonic washing with clean water, and main function is that cleaning is intrapore
Impurity avoids blocking hole, influences subsequent oil absorbing effect.Drying can be used after cleaning.
The following are specific embodiments to illustrate.
Embodiment 1
The preparation method of the porous ceramics of the present embodiment the following steps are included:
S110: take the component of following mass percentage: aluminium oxide 45%, titanium dioxide 14%, glues silica 20%
It ties agent 9% and promotees to burn agent 12%, binder is polyvinyl alcohol, promotees to burn agent to be the mixed of sodium oxide molybdena, calcium oxide, iron oxide and magnesia
Close object, sodium oxide molybdena, calcium oxide, iron oxide and magnesia mass ratio be 1:12:8:11, by aluminium oxide, silica, titanium dioxide
Titanium promotees to burn agent and binder mixing granulation, obtains mixing, and the grain diameter of mixing is 30 μm~100 μm.
S220: mixing is dry-pressing formed, and dry-pressing formed pressure is 100T, obtains biscuit.
S330: biscuit is subjected to dumping, sintering, obtains the green body of porous ceramics.
The process of dumping are as follows: heat 1H to 195 DEG C from room temperature, reheat 8H to 500 DEG C, reheat 3H to 905 DEG C.
The process of sintering are as follows: heat 5H to 500 DEG C from room temperature, reheat 10H to 1210 DEG C, constant temperature 1H.
S440: polishing grinding and ultrasonic cleaning are carried out to green body.
Embodiment 2
The preparation method of the porous ceramics of the present embodiment the following steps are included:
S110: take the component of following mass percentage: aluminium oxide 41%, titanium dioxide 20%, glues silica 1 8%
Tie agent 10% and promote to burn agent 11%, binder is polyvinyl alcohol, promote to burn the mixture that agent is sodium oxide molybdena and magnesia, sodium oxide molybdena and
The mass ratio of magnesia is 2:5, by aluminium oxide, silica, titanium dioxide, promotees to burn agent and binder mixing granulation, be mixed
Material, the grain diameter of mixing are 10 μm~75 μm.
S220: mixing is dry-pressing formed, and dry-pressing formed pressure is 98T, obtains biscuit.
S330: biscuit is subjected to dumping, sintering, obtains the green body of porous ceramics.
The process of dumping are as follows: heat 2H to 205 DEG C from room temperature, reheat 5H to 500 DEG C, reheat 1H to 900 DEG C.
The process of sintering are as follows: heat 3H to 501 DEG C from room temperature, reheat 10H to 1200 DEG C, constant temperature 1H.
S440: after the green body for obtaining porous ceramics, green body is cleaned by ultrasonic.
Embodiment 3
The preparation method of the porous ceramics of the present embodiment the following steps are included:
S110: take the component of following mass percentage: aluminium oxide 58%, titanium dioxide 9%, glues silica 1 5%
It ties agent 15% and promotees to burn agent 3%, promote to burn the mixture that agent is calcium oxide, iron oxide and magnesia, calcium oxide, iron oxide and oxidation
The mass ratio of magnesium is 1:2:2, by aluminium oxide, silica, titanium dioxide, promotees to burn agent and binder mixing granulation, obtains mixing,
The grain diameter of mixing is 40 μm~90 μm.
S220: mixing is dry-pressing formed, and dry-pressing formed pressure is 100T, obtains biscuit.
S330: biscuit is subjected to dumping, sintering, obtains the green body of porous ceramics.
The process of dumping are as follows: heat 1.5 to 200 DEG C from room temperature, reheat 4H to 505 DEG C, reheat 10H to 905 DEG C.
The process of sintering are as follows: heat 1H to 498 DEG C from room temperature, reheat 10H to 1190 DEG C, constant temperature 3H.
S440: after the green body for obtaining porous ceramics, polishing grinding is carried out to green body.
Embodiment 4
The preparation method of the porous ceramics of the present embodiment the following steps are included:
S110: take the component of following mass percentage: aluminium oxide 72%, titanium dioxide 10%, glues silica 7%
It ties agent 6% and promotees to burn agent 5%, binder is polyvinyl alcohol, promotees to burn agent to be the mixed of sodium oxide molybdena, calcium oxide, iron oxide and magnesia
Close object, sodium oxide molybdena, calcium oxide, iron oxide and magnesia mass ratio be 1:5:3:20, by aluminium oxide, silica, titanium dioxide
Titanium promotees to burn agent and binder mixing granulation, obtains mixing, and the grain diameter of mixing is 20 μm~60 μm.
S220: mixing is dry-pressing formed, and dry-pressing formed pressure is 110T, obtains biscuit.
S330: biscuit is subjected to dumping, sintering, obtains the green body of porous ceramics.
The process of dumping are as follows: heat 2H to 198 DEG C from room temperature, reheat 1H to 495 DEG C, reheat 1H to 900 DEG C.
The process of sintering are as follows: heat 1H to 498 DEG C from room temperature, reheat 3H to 1195 DEG C, constant temperature 2H.
S440: after the green body for obtaining porous ceramics, polishing grinding and ultrasonic cleaning are carried out to green body.
Embodiment 5
The preparation method of the porous ceramics of the present embodiment the following steps are included:
S110: take the component of following mass percentage: aluminium oxide 62%, titanium dioxide 13%, glues silica 8%
It ties agent 8% and promotees to burn agent 9%, binder is polyvinyl alcohol, promotees to burn agent to be the mixed of sodium oxide molybdena, calcium oxide, iron oxide and magnesia
Close object, sodium oxide molybdena, calcium oxide, iron oxide and magnesia mass ratio be 1:20:8:15, by aluminium oxide, silica, titanium dioxide
Titanium promotees to burn agent and binder mixing granulation, obtains mixing, and the grain diameter of mixing is 45 μm~90 μm.
S220: mixing is dry-pressing formed, and dry-pressing formed pressure is 100T, obtains biscuit.
S330: biscuit is subjected to dumping, sintering, obtains the green body of porous ceramics.
The process of dumping are as follows: heat 2.5H to 200 DEG C from room temperature, reheat 6H to 500 DEG C, reheat 8H to 900 DEG C.
The process of sintering are as follows: heat 5H to 500 DEG C from room temperature, reheat 10H to 1210 DEG C, constant temperature 1.5H.
S440: after the green body for obtaining porous ceramics, polishing grinding and ultrasonic cleaning are carried out to green body.
Embodiment 6
The preparation method of the porous ceramics of the present embodiment the following steps are included:
S110: take the component of following mass percentage: aluminium oxide 80%, titanium dioxide 2%, glues silica 1 .5%
It ties agent 12.5% and promotees to burn agent 4%, binder is polyvinyl alcohol, promotees to burn the mixture that agent is iron oxide and magnesia, iron oxide
And the mass ratio of magnesia is 1:1, by aluminium oxide, silica, titanium dioxide, promotees to burn agent and binder mixing granulation, obtain
Mixing, the grain diameter of mixing are 50 μm~100 μm.
S220: mixing is dry-pressing formed, and dry-pressing formed pressure is 110T, obtains biscuit.
S330: biscuit is subjected to dumping, sintering, obtains the green body of porous ceramics.
The process of dumping are as follows: heat 3H to 205 DEG C from room temperature, reheat 1H to 500 DEG C, reheat 10H to 905 DEG C.
The process of sintering are as follows: heat 5H to 502 DEG C from room temperature, reheat 10H to 1200 DEG C, constant temperature 2H.
S440: after the green body for obtaining porous ceramics, green body is cleaned by ultrasonic.
Embodiment 7
The preparation method of the porous ceramics of the present embodiment the following steps are included:
S110: take the component of following mass percentage: aluminium oxide 77%, silica 1 1%, titanium dioxide 5.5%,
Binder 5% and rush burn agent 1.5%, and binder is polyvinyl alcohol, promote to burn agent to be sodium oxide molybdena, calcium oxide, iron oxide and magnesia
Mixture, sodium oxide molybdena, calcium oxide, iron oxide and magnesia mass ratio be 20:3:20:20, by aluminium oxide, silica,
Titanium dioxide promotees to burn agent and binder mixing granulation, obtains mixing, and the grain diameter of mixing is 10 μm~70 μm.
S220: mixing is dry-pressing formed, and dry-pressing formed pressure is 105T, obtains biscuit.
S330: biscuit is subjected to dumping, sintering, obtains the green body of porous ceramics.
The process of dumping are as follows: heat 1.5H to 202 DEG C from room temperature, reheat 3H to 503 DEG C, reheat 7H to 904 DEG C.
The process of sintering are as follows: heat 4H to 500 DEG C from room temperature, reheat 3H to 1200 DEG C, constant temperature 3H.
S440: after the green body for obtaining porous ceramics, green body is cleaned by ultrasonic.
Embodiment 8
The preparation method of the porous ceramics of the present embodiment the following steps are included:
S110: the component of following mass percentage: aluminium oxide 68%, silica 4%, titanium dioxide 3%, bonding is taken
Agent 5% and rush burn agent 20%, and binder is polyvinyl alcohol, promote to burn the mixing that agent is sodium oxide molybdena, calcium oxide, iron oxide and magnesia
Object, sodium oxide molybdena, calcium oxide, iron oxide and magnesia mass ratio be 4:17:1:1, by aluminium oxide, silica, titanium dioxide,
Promote to burn agent and binder mixing granulation, obtain mixing, the grain diameter of mixing is 50 μm~90 μm.
S220: mixing is dry-pressing formed, and dry-pressing formed pressure is 105T, obtains biscuit.
S330: biscuit is subjected to dumping, sintering, obtains the green body of porous ceramics.
The process of dumping are as follows: heat 3H to 205 DEG C from room temperature, reheat 1H to 500 DEG C, reheat 5H to 900 DEG C.
The process of sintering are as follows: heat 5H to 500 DEG C from room temperature, reheat 5H to 1200 DEG C, constant temperature 3H.
S440: after the green body for obtaining porous ceramics, polishing grinding and ultrasonic cleaning are carried out to green body.
Comparative example 1
The preparation method of the porous ceramics of the present embodiment the following steps are included:
S110: take the component of following mass percentage: aluminium oxide 62%, titanium dioxide 21%, binder 8% and rush are burnt
Agent 9%, binder are polyvinyl alcohol, promote to burn the mixture that agent is sodium oxide molybdena, calcium oxide, iron oxide and magnesia, sodium oxide molybdena, oxygen
The mass ratio for changing calcium, iron oxide and magnesia is 1:20:8:15, and aluminium oxide, silica, titanium dioxide, rush are burnt agent and glued
Agent mixing granulation is tied, mixing is obtained, the grain diameter of mixing is 45 μm~90 μm.
S220: mixing is dry-pressing formed, and dry-pressing formed pressure is 100T, obtains biscuit.
S330: biscuit is subjected to dumping, sintering, obtains the green body of porous ceramics.
The process of dumping are as follows: heat 2.5H to 200 DEG C from room temperature, reheat 6H to 500 DEG C, reheat 8H to 900 DEG C.
The process of sintering are as follows: heat 5H to 500 DEG C from room temperature, reheat 10H to 1210 DEG C, constant temperature 1.5H.
S440: after the green body for obtaining porous ceramics, polishing grinding and ultrasonic cleaning are carried out to green body.
Comparative example 2
The preparation method of the porous ceramics of the present embodiment the following steps are included:
S110: take the component of following mass percentage: aluminium oxide 62%, silica 21%, binder 8% and rush are burnt
Agent 9%, binder are polyvinyl alcohol, promote to burn the mixture that agent is sodium oxide molybdena, calcium oxide, iron oxide and magnesia, sodium oxide molybdena, oxygen
The mass ratio for changing calcium, iron oxide and magnesia is 1:20:8:15, and aluminium oxide, silica, titanium dioxide, rush are burnt agent and glued
Agent mixing granulation is tied, mixing is obtained, the grain diameter of mixing is 45 μm~90 μm.
S220: mixing is dry-pressing formed, and dry-pressing formed pressure is 100T, obtains biscuit.
S330: biscuit is subjected to dumping, sintering, obtains the green body of porous ceramics.
The process of dumping are as follows: heat 2.5H to 200 DEG C from room temperature, reheat 6H to 500 DEG C, reheat 8H to 900 DEG C.
The process of sintering are as follows: heat 5H to 500 DEG C from room temperature, reheat 10H to 1210 DEG C, constant temperature 1.5H.
S440: after the green body for obtaining porous ceramics, polishing grinding and ultrasonic cleaning are carried out to green body.
Example 1 to 8 and the porous ceramics green body of comparative example 1 and comparative example 2 carry out performance detection, testing result such as table
1。
Table 1
Wherein, SEM scanning electron microscope is carried out to the porous ceramics of embodiment 5, test results are shown in figure 1, it can be seen that implement
The porous ceramics pore-forming of example 5 works well, and green body internal structure is not collapsed.
As shown in Table 1, each performance of the porous ceramics of embodiment 1 to 5 compares comparative example 1 and comparative example 2 is more excellent, comparison
Example 1 and comparative example 2, the aperture of the porous ceramics of embodiment 1 to 5 is 10 μm~50 μm, porosity is up to 30%~70%, and oil suction is fast
Degree is fast, then Oil Guide is unobstructed, it is not easy to form blocking, and thermally conductive fast, help to promote amount of smoke, and then promote mouthfeel.
The composition of raw materials of comparative example 1 and comparative example 2 and the composition of raw materials of embodiment 5 are closest, but because of silica and two
The content of titanium oxide is different, so that the aperture of the porous ceramics of comparative example 1 and comparative example 2 and porosity are decreased obviously, Oil Guide is not
Enough unobstructed, blockings easy to form, then the composition of raw materials of porous ceramics of the invention is an organic whole, and each component lacks all
The aperture and porosity that may cause product reduce, and then influence Oil Guide performance.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
One embodiment of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of porous ceramics raw material, which is characterized in that the component including following mass percentage: aluminium oxide 40%~
80%, silica 1 %~20%, titanium dioxide 1%~20% and rush burn agent 1%~22%.
2. porous ceramics raw material according to claim 1, which is characterized in that the rush burn agent be selected from sodium oxide molybdena, calcium oxide,
One or more of iron oxide and magnesia.
3. porous ceramics raw material according to claim 2, which is characterized in that it is sodium oxide molybdena, calcium oxide, oxygen that the rush, which burns agent,
Change iron and magnesia, the sodium oxide molybdena, calcium oxide, iron oxide and magnesia mass ratio be 1~20:1~20:1~20:1~
20。
4. porous ceramics raw material according to claim 1, which is characterized in that the grain diameter of the aluminium oxide be 20 μm~
100μm。
5. a kind of preparation method of porous ceramics, which comprises the following steps:
Take the component of following mass percentage: aluminium oxide 40%~80%, silica 1 %~20%, titanium dioxide 1%~
20% burns agent 1%~20% with rush, binder is added, then mixing granulation, obtains mixing；
The mixing is dry-pressing formed, obtain biscuit；
The biscuit is subjected to dumping, sintering, obtains the green body of porous ceramics.
6. the preparation method of porous ceramics according to claim 5, which is characterized in that further comprising the steps of: obtaining more
After the green body of hole ceramics, green body is surface-treated, is surface-treated as polishing grinding and/or ultrasonic cleaning.
7. the preparation method of porous ceramics according to claim 5, which is characterized in that the grain diameter of the mixing is 10
μm~100 μm；The dry-pressing formed pressure is；95T~110T.
8. the preparation method of porous ceramics according to claim 5, which is characterized in that the process of the dumping are as follows: from room
1H~3H to 200 ± 5 DEG C of temperature heating, reheats 1H~10H to 500 ± 5 DEG C, reheats 1H~10H to 900 ± 5 DEG C, then certainly
So it is cooled to room temperature；The process of the sintering are as follows: heat 1H~5H to 500 ± 2 DEG C from room temperature, reheat 3H~10H to 1200
± 10 DEG C, constant temperature 1H~3H.
9. porous ceramics made from the preparation method of the described in any item porous ceramics of claim 5 to 8.
10. application of the porous ceramics as claimed in claim 9 in electronic cigarette.
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