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Multi-layer porous ceramic material and preparation method thereof

A technology of porous ceramics and ceramic powders, applied in the field of atomizers, can solve the problems of inconsistent heat transmission, uneven distribution, weak oil-locking and oil-conducting ability, etc. Loss and increase the effect of oil locking and oil guiding ability

Pending Publication Date: 2021-02-05
深圳市天士力神通本草技术开发有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the currently used commercial porous ceramic atomizing core has the following defects: (1) The aperture of the atomizing core is single and unevenly distributed, resulting in uneven distribution of e-liquid and poor atomization effect
(2) The oil-locking and oil-guiding ability of the atomizing core is weak, the supply of atomizing liquid is not smooth during the atomization process, and the adsorption and self-locking ability is poor
(3) The thermal conductivity of the porous ceramic itself is low. The temperature of the heating wire in the atomizing core shows a distribution trend of high temperature near the heating wire and low temperature at the edge. The heat transmission of the porous ceramic is inconsistent, resulting in uneven distribution of the temperature field and affecting Physicochemical effect of atomized liquid

Method used

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  • Multi-layer porous ceramic material and preparation method thereof

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preparation example Construction

[0040]On the other hand, there is also provided a method for preparing a multilayer porous ceramic material, the method comprising:

[0041]Ceramic powder, additives, co-solvents, pore formers and nano-high thermal conductivity materials are made into ceramic bodies through ball milling, granulation, and cold forming processes;

[0042]Use ceramic powder, additives, pore formers and nano high thermal conductivity materials to press into ceramic slurry;

[0043]The ceramic slurry and the ceramic body are alternately distributed in sequence to obtain the pre-composite material;

[0044]The pre-composite material is sintered to prepare a multilayer porous ceramic composite material.

[0045]In the foregoing embodiment, in the method for preparing composite porous ceramics, the ceramic powder is at least one of alumina, zirconia, silicon oxide, yttrium oxide, silicon carbide, boron nitride, aluminum nitride, silicon nitride, etc., Ceramic powder particle size D50It is 1μm~30μm. Additives include alumi...

Embodiment 1

[0050](1) Take a certain amount of alumina powder, powder particle size D505μm, 8wt% SiO2, 8wt% hollow zirconia, 5wt% ammonium dihydrogen phosphate, 3wt% TiO2And 3wt% MgO2, 3wt% Al-Mg-Cu alloy powder, 65%wt% absolute ethanol, the above raw materials can be milled using a ball mill, the milling time is 2h, and the speed is 200r / min.

[0051](2) Dry the above ball mill slurry at 120°C to obtain the dried ceramic powder. Add a certain amount of 5% PVA solution, and then granulate. There is no special requirement for the granulation particle size, which can ensure that the cold compacted body has Certain strength, no stratification, no defects, etc.

[0052](3) Use cold isostatic pressing or other molding methods to make ceramic green bodies from the granulated powder.

[0053](4) Take a certain amount of alumina powder, powder particle size D505μm, 5wt% SiO2, 5wt% hollow alumina, 5wt% ammonium dihydrogen phosphate, 3wt% TiO2And 3wt% MgO2, 5wt% Al-Mg-Cu alloy powder, 50%wt% absolute ethanol, 40w...

Embodiment 2

[0057](1) Take a certain amount of ZrO2Powder, powder particle size D505μm, 8wt% SiO2, 8wt% hollow glass powder, 5wt% ammonia dihydrogen phosphate, 3wt% Al-Mg-Cu alloy powder, 3wt% TiO2And 3wt% MgO2, 65% wt% absolute ethanol, the above raw materials can be milled using a ball mill, the milling time is 2h, and the speed is 200r / min.

[0058](2) Dry the above ball mill slurry at 120°C to obtain the dried ceramic powder. Add a certain amount of 5% PVA solution, and then granulate. There is no special requirement for the granulation particle size, which can ensure that the cold compacted body has Certain strength, no stratification, no defects, etc.

[0059](3) Use cold isostatic pressing or other molding methods to make ceramic green bodies from the granulated powder.

[0060](4) Take a certain amount of Si3N4Powder, powder particle size D505μm, 5wt% SiO2, 5wt% hollow glass powder, 5wt% ammonia dihydrogen phosphate, 5wt% Cu-Ni-Zn alloy powder, 3wt% TiO2And 3wt% MgO2, 50%wt% absolute ethanol, 40...

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Abstract

The invention provides a multi-layer porous ceramic material and a preparation method thereof, and particularly relates to the field of atomizers. The material is composed of multiple layers of porousceramics with different porosities and different thermal conductivities, and all the layers form an integrated composite material through an inorganic connecting layer formed by sintering. The ceramic material is formed by overlapping a plurality of layers of porous ceramics, and an inorganic connecting layer is formed in the sintering process, so that the prepared multi-layer ceramic forms a whole, and the cracking and deformation of the porous ceramic material are avoided. The composite material is ensured to form a unified whole, and the use performance of the material is improved.

Description

Technical field[0001]The invention relates to the field of atomizers, in particular to a multilayer porous ceramic material and a preparation method thereof.Background technique[0002]Porous ceramic material is a kind of porous ceramic material with open pore diameter and high open porosity. It has the advantages of high temperature resistance, high pressure resistance, acid and alkali corrosion resistance, etc. It is currently widely used in environmental protection, biomedicine, food and medicine , New energy and other fields, have great research and use value.[0003]In the field of atomization equipment, the atomization core is the core component. There are mainly two types of atomization cores: the traditional fiber cotton atomization core and the emerging ceramic atomization core. Compared with the traditional fiber cotton atomization, the porous ceramic atomizing core has better atomization effect, highly reducing the original taste of the atomized liquid, high reduction degree,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/117C04B35/119C04B35/488C04B35/49C04B35/596C04B35/14C04B35/505C04B35/577C04B35/5835C04B35/582C04B35/622C04B38/08C04B38/02
CPCC04B35/117C04B35/119C04B35/488C04B35/49C04B35/587C04B35/14C04B35/505C04B35/565C04B35/583C04B35/581C04B35/622C04B38/08C04B38/02C04B2235/3418C04B2235/3244C04B2235/447C04B2235/3232C04B2235/3206C04B2235/402C04B2235/401C04B2235/407C04B2235/5436C04B2235/36C04B2235/405C04B2235/40C04B2235/6562C04B2235/6567C04B2235/96C04B2235/9607C04B35/10C04B38/0054C04B38/0074
Inventor 刘翔
Owner 深圳市天士力神通本草技术开发有限公司
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