CN115677376A - Porous ceramic atomizing structural component and preparation method thereof - Google Patents
Porous ceramic atomizing structural component and preparation method thereof Download PDFInfo
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- 239000000919 ceramic Substances 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 75
- 238000005245 sintering Methods 0.000 claims abstract description 62
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 33
- 238000002156 mixing Methods 0.000 claims abstract description 33
- 239000000203 mixture Substances 0.000 claims abstract description 32
- 239000002002 slurry Substances 0.000 claims abstract description 32
- 238000000889 atomisation Methods 0.000 claims abstract description 23
- 238000001746 injection moulding Methods 0.000 claims abstract description 18
- 238000007731 hot pressing Methods 0.000 claims abstract description 15
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- 238000010304 firing Methods 0.000 claims abstract description 11
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- 238000010438 heat treatment Methods 0.000 claims abstract description 8
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 36
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- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 20
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 20
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 20
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- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 20
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 20
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- 238000000034 method Methods 0.000 claims description 10
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- 235000021355 Stearic acid Nutrition 0.000 claims description 7
- 239000011324 bead Substances 0.000 claims description 7
- 239000010431 corundum Substances 0.000 claims description 7
- 229910052593 corundum Inorganic materials 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 7
- 239000008117 stearic acid Substances 0.000 claims description 7
- 229910021536 Zeolite Inorganic materials 0.000 claims description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 6
- 238000007493 shaping process Methods 0.000 claims description 6
- 239000010457 zeolite Substances 0.000 claims description 6
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Abstract
The invention discloses a preparation method of a porous ceramic atomization structural component, which comprises the following steps: s1: preparing waxy slurry; uniformly mixing aggregate, a sintering aid, a heat conduction modifier and a structure setting agent to obtain a dry powder mixture, transferring the dry powder mixture to a wax mixer, adding a grouting forming agent into the wax mixer, stirring the mixture with wax, and uniformly mixing the mixture to obtain wax slurry; s2: molding; hot-pressing and injection-molding the wax slurry and the heating element together to prepare green particles of the porous ceramic atomization structural component; s3: removing wax; embedding the green particles of the porous ceramic atomization structural component into dewaxing powder for dewaxing; s4: firing; dewaxing the green grains of the porous ceramic atomization structural component, and then sintering to obtain a porous ceramic atomization structural component Mao Pili; s5: cleaning; the invention aims to solve the problems of low development effect, large product difference and high production cost in the prior art.
Description
Technical Field
The invention relates to the technical field of atomizers, in particular to a porous ceramic atomizing structural component and a preparation method thereof.
Background
At present, the porous ceramic atomization structural component occupies a core position of great importance in various related components for electronic cigarettes, attracts a large number of practitioners to continuously improve and optimize the core component, and promotes the healthy and stable development of the electronic cigarette industry. The porous ceramic atomizing structural parts which are mainstream in the market mainly comprise three types of an embedded type, a surface embedded type and a surface coating type according to the attachment form of a heating body, and the porous ceramic atomizing structural parts which are commonly classified according to the shapes of the parts mainly comprise three types of cylinders, cups, squares and the like.
Nevertheless, the porous ceramic atomizing structures available on the market are still heterogeneous and their organoleptic properties are also good. The reason for this difference is that most developers cannot accurately match the key index that affects the excellent sensitivity of the mouthpiece of the porous ceramic atomizing structural component. When the product is prepared, general indexes of porous ceramic preparation such as porosity, pore size, pore distribution and the like of a ceramic matrix are subjected to excessive analysis, so that a large amount of porous ceramic substrates capable of being further analyzed are missed, and the most important point is that the atomization performance of each porous ceramic material cannot be accurately improved to the utmost extent, and the available porous ceramic products in the atomization field cannot be accurately customized. In addition, most of the products have narrow sintering temperature range, the size shrinkage of the products is not easy to control, the temperature control requirement on sintering equipment is strict, and the sintering equipment with high temperature control precision is expensive, so that a practitioner can increase the product quality and the production cost or reduce the product quality and the production cost, and the product performance on the market is different.
For the porous ceramic atomization structural component with the surface embedded, the optimal cooperative atomization capacity of the porous ceramic matrix and the heating element during mutual working can be fitted to the maximum extent by adopting a mode of externally adding a heat conduction fitting agent, and the introduction of the structure shaping agent not only can greatly widen the sintering temperature range of the porous ceramic matrix, but also can be widely adapted to more common sintering equipment. The porous ceramic atomization structural component with stable and controllable size, concentrated heating and uniform atomization can be precisely customized by the two modes, and the key difficulty is the selection of the types of the heat conduction simulation agent and the structure shaping agent and the precise control of the addition amount.
Disclosure of Invention
Aiming at the defects in the technology, the invention provides a porous ceramic atomizing structural component and a preparation method thereof, aiming at solving the problems of low development effect, large product difference and high production cost in the prior art.
In order to achieve the above object, the present invention provides a method for preparing a porous ceramic atomizing structural member, comprising the steps of:
s1: preparing waxy slurry; uniformly mixing aggregate, a sintering aid, a heat conduction modifier and a structure setting agent to obtain a dry powder mixture, transferring the dry powder mixture to a wax mixer, adding a grouting forming agent, stirring wax, and uniformly mixing to obtain wax slurry;
s2: molding; hot-pressing and injection-molding the wax slurry and the heating element together to prepare green particles of the porous ceramic atomization structural component;
s3: removing wax; embedding the green particles of the porous ceramic atomizing structural component into dewaxing powder for dewaxing;
s4: firing; dewaxing the green grains of the porous ceramic atomizing structural component, and then sintering to obtain a porous ceramic atomizing structural component Mao Pili;
s5: cleaning; and cleaning and drying the porous ceramic atomizing structural component Mao Pili to obtain a porous ceramic atomizing structural component product.
Preferably, in step S1, the content of each component is, by mass:
aggregate: 30% -70%;
a sintering aid: 15% -40%;
heat conduction modifier: 0.5% -15%;
a structure setting agent: 5% -20%;
and the addition amount of the grouting forming agent is 40-60% of the total mass of the dry powder mixture.
Preferably, in step S1, the aggregate is one or two of quartz powder and corundum powder; the sintering aid is one or a mixture of two of glass powder and glass beads, the pore-forming agent is one or a mixture of more of starch, rice hull powder and plant ash, the heat conduction modifier is one or a mixture of more of diatomite, green zeolite, floating beads and sepiolite, the structure shaping agent is one or a mixture of more of zirconia hollow spheres, fly ash hollow spheres, diatomite and sepiolite, and the grouting forming agent is one or a mixture of paraffin, beeswax, oleic acid and stearic acid.
Preferably, the air pressure of hot-pressing injection molding is 0.4-0.9MPa, the temperature of a slurry barrel is 60-80 ℃, and the temperature of a grouting opening is 55-75 ℃; the dewaxing conditions include dewaxing speed of 0.1-1 deg.c/min, dewaxing temperature of 350-380 deg.c and heat preservation time of 1-4 hr; the sintering conditions are that the sintering rate is 1.5-10 ℃/min, the sintering temperature is 500-800 ℃, and the heat preservation time is 0.5-3h.
Preferably, the control conditions in the firing process are that the firing line shrinkage is less than 4%, the porosity is 40-65%, the aperture median value is 5-60 μm, the breaking resistance is more than 15N, and the thermal conductivity is 0.15-0.6W/(m.K).
The invention also discloses a porous ceramic atomizing structural component which is prepared by the preparation method.
The invention has the beneficial effects that: compared with the prior art, the porous ceramic atomizing structural component and the preparation method thereof provided by the invention have the advantages that the development idea of the porous ceramic atomizing structural component for the electronic cigarette is refined, the development direction of the product is held more accurately, and the actual effectiveness of each raw material is exerted properly; the matching degree of the porous ceramic matrix and the heating element is accurately predicted by introducing the heat conduction simulation agent, so that the development time of a product can be shortened, the utilization rate of raw materials can be improved, and the comprehensive atomization capability of the porous ceramic atomization structural component is further improved; and the introduction of the structure shaping agent in the preparation method also reduces the strict requirements on equipment in the production process and the requirements on high-precision equipment, thereby being beneficial to reducing the production and manufacturing cost and finally realizing the preparation of the porous ceramic atomization structural component with high consistency of the product size and characteristic under the condition of low cost input.
Drawings
FIG. 1 is a flow chart of the steps of the present invention;
Detailed Description
In order to make the invention clearer, the invention is further described below with reference to the drawings and examples, but it is understood that the scope of the invention is not limited thereto, and that changes can be made by those skilled in the art without inventive efforts.
Referring to fig. 1, the present invention discloses a method for preparing a porous ceramic atomizing structural component, which comprises the following steps:
s1: preparing waxy slurry; uniformly mixing aggregate, a sintering aid, a heat conduction modifier and a structure setting agent to obtain a dry powder mixture, transferring the dry powder mixture to a wax mixer, adding a grouting forming agent, stirring wax, and uniformly mixing to obtain wax slurry; s2: molding; hot-pressing and injection-molding the wax slurry and the heating element together to prepare green particles of the porous ceramic atomization structural component; s3: removing wax; embedding the green particles of the porous ceramic atomizing structural component into dewaxing powder for dewaxing; s4: firing; dewaxing the green grains of the porous ceramic atomization structural component, and then sintering to obtain a porous ceramic atomization structural component Mao Pili; s5: cleaning; and cleaning and drying the porous ceramic atomizing structural component Mao Pili to obtain a porous ceramic atomizing structural component product. In the specific implementation process, the components such as the aggregate, the pore-forming agent and the like are firstly mixed uniformly in advance and then mixed with the grouting forming agent, so that the wax paper slurry with more uniform material dispersion is obtained, then the wax paper slurry is formed, the wax removing treatment is firstly carried out to reduce the influence of the grouting forming agent in the firing step, and the required product is obtained after the slurry is fired and cleaned.
In order to achieve the purpose, in step S1, the contents of the components are as follows by mass percent: aggregate: 30% -70%; a sintering aid: 15% -40%; heat conduction modifier: 0.5% -15%; a structure setting agent: 5% -20%; and the addition amount of the grouting forming agent is 40-60% of the total mass of the dry powder mixture. In the step S1, the aggregate is one or two of quartz powder and corundum powder; the sintering aid is one or a mixture of two of glass powder and glass beads, the pore-forming agent is one or a mixture of more of starch, rice hull powder and plant ash, the heat conduction modifier is one or a mixture of more of diatomite, green zeolite, floating beads and sepiolite, the structure shaping agent is one or a mixture of more of zirconia hollow spheres, fly ash hollow spheres, diatomite and sepiolite, and the grouting forming agent is one or a mixture of paraffin, beeswax, oleic acid and stearic acid. The air pressure of hot-pressing injection molding is 0.4-0.9MPa, the temperature of a slurry barrel is 60-80 ℃, and the temperature of an injection port is 55-75 ℃; the dewaxing conditions include dewaxing speed of 0.1-1 deg.c/min, dewaxing temperature of 350-380 deg.c and heat preservation time of 1-4 hr; the sintering conditions are that the sintering rate is 1.5-10 ℃/min, the sintering temperature is 500-800 ℃, and the heat preservation time is 0.5-3h. The control conditions in the firing process are that the firing line shrinkage is less than 4%, the porosity is 40-65%, the aperture median is 5-60 μm, the breaking resistance is more than 15N, and the heat conductivity coefficient is 0.15-0.6W/(m.K). In the embodiment, the thermal conductivity depends on the type of the thermal conductivity modifier and the precise control of the addition amount, different types of thermal conductivity modifiers are added, the addition of different amounts of thermal conductivity modifiers can affect the thermal conductivity of the whole system, and the thermal conductivity can be gradually reduced along with the increase of the addition amount of the thermal conductivity modifier; furthermore, the sintering temperature range depends on the selection of the type of the structure-determining agent and the precise control of the addition amount; in a specific implementation process, in order to enable the whole structure to generate more pores, 5-30% by mass of pore-forming agent can be additionally added, and one or more of starch, rice hull powder and plant ash can be mixed, so that the porosity and pore diameter of the finally obtained porous atomization structural component meet the use requirements.
The application is illustrated by the following specific examples
Example 1:
weighing 60% of quartz powder, 20% of glass powder, 20% of fly ash hollow spheres, 20% of starch, 52.5% of paraffin and 0.4% of oleic acid according to mass fraction, firstly mixing the quartz powder, the glass powder and the fly ash hollow spheres with the starch, then mixing the mixture with the paraffin and the oleic acid after uniform mixing, and carrying out hot-pressing injection molding at the air pressure of 0.4MPa, the temperature of a slurry barrel of 60 ℃ and the temperature of a slurry injection port of 55 ℃; the conditions of de-waxing are that the de-waxing speed is 0.1 ℃/min, the de-waxing temperature is 350 ℃, and the heat preservation time is 1h; the sintering conditions are that the sintering rate is 1 ℃/min, the sintering temperature is 500 ℃, and the heat preservation time is 0.5h;
example 2:
weighing 45% of quartz powder, 30% of glass powder, 25% of fly ash hollow spheres, 10% of starch, 52.5% of paraffin and 0.4% of oleic acid according to mass fraction, firstly mixing the quartz powder, the glass powder and the fly ash hollow spheres with the starch, then mixing the mixture with the paraffin and the oleic acid after uniform mixing, and carrying out hot-pressing injection molding at the air pressure of 0.4MPa, the temperature of a slurry barrel of 60 ℃ and the temperature of a slurry injection port of 55 ℃; the conditions of de-waxing are that the de-waxing speed is 0.1 ℃/min, the de-waxing temperature is 350 ℃, and the heat preservation time is 1h; the sintering conditions are that the sintering rate is 1 ℃/min, the sintering temperature is 500 ℃, and the heat preservation time is 0.5h.
Example 3:
weighing 35% of quartz powder, 30% of glass powder, 30% of fly ash hollow spheres, 10% of starch, 52.5% of paraffin and 0.4% of oleic acid, firstly mixing the quartz powder, the glass powder, the fly ash hollow spheres and the starch, mixing the mixture with the paraffin and the oleic acid after the mixture is uniformly mixed, and performing hot-press injection molding at the air pressure of 0.4MPa, the temperature of a slurry barrel of 60 ℃ and the temperature of a slurry injection port of 55 ℃; the conditions of de-waxing are that the de-waxing speed is 0.1 ℃/min, the de-waxing temperature is 350 ℃, and the heat preservation time is 1h; the sintering conditions are that the sintering rate is 1 ℃/min, the sintering temperature is 500 ℃, and the heat preservation time is 0.5h.
Example 4:
weighing 25% of quartz powder, 30% of glass powder, 45% of fly ash hollow spheres, 10% of starch, 45% of paraffin and 0.4% of oleic acid, firstly mixing the quartz powder, the glass powder, the fly ash hollow spheres and the starch, mixing the mixture with the paraffin and the oleic acid after the mixture is uniformly mixed, and performing hot-press injection molding at the air pressure of 0.4MPa, the temperature of a slurry barrel of 60 ℃ and the temperature of a slurry injection port of 55 ℃; the conditions of de-waxing are that the de-waxing speed is 0.1 ℃/min, the de-waxing temperature is 350 ℃, and the heat preservation time is 1h; the sintering conditions are that the sintering rate is 1 ℃/min, the sintering temperature is 500 ℃, and the heat preservation time is 0.5h.
Example 5:
weighing 30% of quartz powder, 30% of glass powder, 45% of diatomite, 57.5% of paraffin and 0.4% of oleic acid, firstly mixing the quartz powder, the glass powder and the diatomite, and then mixing the quartz powder, the glass powder and the diatomite uniformly, wherein the pressure of hot-pressing injection molding is 0.9MPa, the temperature of a slurry barrel is 80 ℃, and the temperature of a grouting opening is 75 ℃; the conditions of dewaxing are that the dewaxing rate is 1 ℃/min, the dewaxing temperature is 380 ℃, and the heat preservation time is 4h; the sintering conditions are that the sintering rate is 10 ℃/min, the sintering temperature is 800 ℃, and the heat preservation time is 3h.
Example 6:
weighing 55% of quartz powder, 20% of glass powder, 40% of green zeolite, 57.5% of paraffin and 4% of stearic acid, firstly mixing the quartz powder, the glass powder and the green zeolite, and then mixing the quartz powder, the glass powder and the green zeolite with paraffin and stearic acid after uniform mixing, wherein the pressure of hot-pressing injection molding is 0.9MPa, the temperature of a slurry barrel is 80 ℃, and the temperature of a slurry injection port is 75 ℃; the conditions of dewaxing are that the dewaxing rate is 1 ℃/min, the dewaxing temperature is 380 ℃, and the heat preservation time is 4h; the sintering conditions are that the sintering rate is 10 ℃/min, the sintering temperature is 800 ℃, and the heat preservation time is 3h.
Example 7:
weighing 25% of quartz powder, 35% of glass powder, 40% of sepiolite, 57.5% of paraffin and 0.4% of oleic acid, firstly mixing the quartz powder, the glass powder and the sepiolite, and mixing the quartz powder, the glass powder and the sepiolite with the paraffin and the oleic acid after uniform mixing, wherein the air pressure of hot-pressing injection molding is 0.9MPa, the temperature of a pulp barrel is 80 ℃, and the temperature of a grouting port is 75 ℃; the dewaxing conditions are that the dewaxing speed is 1 ℃/min, the dewaxing temperature is 380 ℃, and the heat preservation time is 4h; the sintering conditions are that the sintering rate is 10 ℃/min, the sintering temperature is 800 ℃, and the heat preservation time is 3h.
Example 8:
weighing 20% of glass powder, 40% of glass microspheres, 40% of diatomite, 57.5% of paraffin and 4% of stearic acid, firstly mixing the glass powder, the glass microspheres and the diatomite uniformly, then mixing the mixture with the paraffin and the stearic acid, wherein the air pressure of hot-pressing injection molding is 0.9MPa, the temperature of a slurry barrel is 80 ℃, and the temperature of a grouting opening is 75 ℃; the conditions of dewaxing are that the dewaxing rate is 1 ℃/min, the dewaxing temperature is 380 ℃, and the heat preservation time is 4h; the sintering conditions are that the sintering rate is 10 ℃/min, the sintering temperature is 800 ℃, and the heat preservation time is 3h.
Example 9:
20% of corundum powder, 20% of glass beads, 40% of diatomite, 57.5% of paraffin and 0.4% of oleic acid are weighed, the corundum powder, the glass particles and the diatomite are mixed firstly, and are mixed with the paraffin and the oleic acid after being mixed uniformly, the air pressure of hot-pressing injection molding is 0.9MPa, the temperature of a mortar barrel is 80 ℃, and the temperature of a grouting port is 75 ℃; the conditions of dewaxing are that the dewaxing rate is 1 ℃/min, the dewaxing temperature is 380 ℃, and the heat preservation time is 4h; the sintering conditions are that the sintering rate is 10 ℃/min, the sintering temperature is 800 ℃, and the heat preservation time is 3h.
Comparative example 1:
weighing 80% of quartz powder, 20% of glass powder, 10% of starch, 40% of paraffin and 0.4% of oleic acid, firstly mixing the quartz powder, the glass powder and the starch, and then mixing the quartz powder, the glass powder and the starch with the paraffin and the oleic acid after uniform mixing, wherein the air pressure of hot-pressing injection molding is 0.9MPa, the temperature of a pulp barrel is 80 ℃, and the temperature of a grouting port is 75 ℃; the conditions of dewaxing are that the dewaxing rate is 1 ℃/min, the dewaxing temperature is 380 ℃, and the heat preservation time is 4h; the sintering conditions are that the sintering rate is 10 ℃/min, the sintering temperature is 800 ℃, and the heat preservation time is 3h.
Comparative example 2:
weighing 80% of corundum powder, 20% of glass powder, 20% of starch, 40% of paraffin and 0.5% of oleic acid, firstly mixing the corundum powder, the glass powder and the starch, mixing the mixture with the paraffin and the oleic acid after the mixture is uniformly mixed, wherein the air pressure of hot-pressing injection molding is 0.9MPa, the temperature of a slurry barrel is 80 ℃, and the temperature of a grouting opening is 75 ℃; the dewaxing conditions are that the dewaxing speed is 1 ℃/min, the dewaxing temperature is 380 ℃, and the heat preservation time is 4h; the sintering conditions are that the sintering rate is 10 ℃/min, the sintering temperature is 800 ℃, and the heat preservation time is 3h.
The ceramic atomizing structural components obtained in the above examples and comparative examples were respectively tested, and the appearance, linear shrinkage, resistance, strength, porosity, thermal conductivity, etc. were tested, and the test results were as follows:
the invention also discloses a porous ceramic atomizing structural component which is prepared by the preparation method.
The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (6)
1. A preparation method of a porous ceramic atomizing structural component is characterized by comprising the following steps:
s1: preparing waxy slurry; uniformly mixing aggregate, a sintering aid, a heat conduction modifier and a structure setting agent to obtain a dry powder mixture, transferring the dry powder mixture to a wax mixer, adding a grouting forming agent, stirring wax, and uniformly mixing to obtain wax slurry;
s2: molding; hot-pressing and injection-molding the waxy slurry and the heating element together to prepare green body particles of the porous ceramic atomization structural component;
s3: removing wax; embedding the green particles of the porous ceramic atomizing structural component into dewaxing powder for dewaxing;
s4: firing; dewaxing the green grains of the porous ceramic atomization structural component, and then sintering to obtain a porous ceramic atomization structural component Mao Pili;
s5: cleaning; and cleaning and drying the porous ceramic atomizing structural component Mao Pili to obtain a porous ceramic atomizing structural component product.
2. The method for preparing the porous ceramic atomizing structural member according to claim 1, wherein in step S1, the contents of the respective components are, in mass percent:
aggregate: 30% -70%;
a sintering aid: 15% -40%;
heat conduction modifier: 0.5% -15%;
a structure setting agent: 5% -20%;
and the addition amount of the grouting forming agent is 40-60% of the total mass of the dry powder mixture.
3. The method for preparing a porous ceramic atomizing structural member according to claim 1, wherein in step S1, the aggregate is one or two of quartz powder and corundum powder; the sintering aid is one or two of glass powder and glass beads, the heat conduction modifier is one or more of diatomite, green zeolite, floating beads and sepiolite, the structure shaping agent is one or more of zirconia hollow spheres, fly ash hollow spheres, diatomite and sepiolite, and the slip casting agent is one or more of paraffin, beeswax, oleic acid and stearic acid.
4. The method for preparing a porous ceramic atomizing structural component according to claim 1, wherein the pressure of hot-press injection molding is 0.4 to 0.9MPa, the temperature of a slurry barrel is 60 to 80 ℃, and the temperature of a slurry injection port is 55 to 75 ℃; the dewaxing conditions are that the dewaxing rate is 0.1-1 ℃/min, the dewaxing temperature is 350-380 ℃, and the heat preservation time is 1-4h; the sintering conditions are that the sintering rate is 1.5-10 ℃/min, the sintering temperature is 500-800 ℃, and the heat preservation time is 0.5-3h.
5. The method for preparing a porous ceramic atomizing structural member according to claim 1, characterized in that the control conditions during firing are that the firing line shrinkage is less than 4%, the porosity is 40-65%, the median value of pore diameter is 5-60 μm, the breaking resistance is more than 15N, and the thermal conductivity is 0.15-0.6W/(m.K).
6. A porous ceramic atomizing structural member, characterized in that it is produced by the production method according to any one of claims 1 to 5.
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| CN116283345A (en) * | 2023-03-06 | 2023-06-23 | 深圳梵活生命科学股份有限公司 | Porous ceramic atomizing core and preparation method thereof |
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