Porous ceramic for electronic cigarette atomization core with low thermal conductivity and high porosity and preparation method of porous ceramic

A technology with high porosity and low thermal conductivity, which can be used in ceramic products, smoker products, applications, etc., and can solve problems such as low thermal conductivity, low thermal conductivity, and short time intervals

Pending Publication Date: 2021-07-13
江西一创新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ceramic atomizing cores of electronic cigarettes currently on the market are small in size. During the continuous smoking process, the heating time of the ceramic atomizing cores is long and the time interval is short. There are still ceramic atomizing cores on the market because the thermal conductivity of the atomizing cores is too high. Therefore, it is urgent to develop a porous ceramic material with high porosity and low thermal conductivity, which has the characteristics of good oil absorption and low thermal conductivity, so as to prevent the paste core from improving the taste

Method used

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  • Porous ceramic for electronic cigarette atomization core with low thermal conductivity and high porosity and preparation method of porous ceramic
  • Porous ceramic for electronic cigarette atomization core with low thermal conductivity and high porosity and preparation method of porous ceramic
  • Porous ceramic for electronic cigarette atomization core with low thermal conductivity and high porosity and preparation method of porous ceramic

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preparation example Construction

[0025] The specific steps of the preparation method of the porous ceramics for the low thermal conductivity and high porosity electronic smog core are as follows:

[0026] Step S1: Mix raw materials into spare materials.

[0027] Specifically, the process of mixing raw materials into spare materials includes: mixing mullite, diatomaceous earth, foamed carbon, aluminum oxide hollow spheres, inorganic binders, pore-forming agents, and retarders into raw materials with good consistency.

[0028] Specifically, the mixing method adopts one or more combinations of dry ball mill mixing, double-motion mixer mixing, three-dimensional mixer mixing, V-type mixer mixing, and the like.

[0029] Specifically, the mixing time is 1-3 hours.

[0030] Wherein, calculated according to mass percentage, the raw materials include: 1%-15% mullite, 40%-60% diatomite, 5%-25% aluminum oxide hollow spheres, 1-5% foam carbon powder , 10%-15% pore forming agent, 1-8% inorganic binder, 0.1-0.5% retarder....

Embodiment 1

[0052] The preparation process of the porous ceramic atomizing core of this embodiment is as follows:

[0053] (1) According to Table 1, each component was weighed according to the mass percentage (referred to as content in the table) to obtain raw materials. Among them, the D50 of mullite is 2 μm; the D50 of diatomite is 15 μm; the D50 of alumina hollow sphere is 80 μm; the D50 of carbon foam is 15 μm, the D50 of pore-forming agent is 8 μm, and the D50 of inorganic binder is 1.5 μm. Add to a ball mill or other mixing equipment and dry mix for 2 hours.

[0054] (2) Mix and stir the mixed raw materials according to a liquid-solid ratio of 1.2:1 to obtain a ceramic slurry.

[0055] (3) Slurry molding the ceramic slurry to obtain a square block porous ceramic blank.

[0056] (4) Put the ceramic blank into a sintering furnace for sintering to obtain a porous ceramic atomizing core product. Specifically, the drying temperature is 260°C, the burning temperature of the pore-formin...

Embodiment 2

[0058] The preparation process of the porous ceramic atomizing core of this embodiment is as follows:

[0059] (1) According to Table 1, each component was weighed according to the mass percentage to obtain raw materials. Among them, the D50 of mullite is 4 μm; the D50 of diatomite is 10 μm; the D50 of alumina hollow sphere is 100 μm; the D50 of carbon foam is 10 μm, the D50 of pore-forming agent is 6 μm, and the D50 of inorganic binder is 3 μm. Add to a ball mill or other mixing equipment and dry mix for 0.5 hours.

[0060] (2) Mix and stir the mixed raw materials according to a liquid-solid ratio of 1:1 to obtain a ceramic slurry.

[0061] (3) Slurry molding the ceramic slurry to obtain a square block porous ceramic blank.

[0062] (4) Put the ceramic blank into a sintering furnace for sintering to obtain a porous ceramic atomizing core product. Specifically, the drying temperature is 240°C, the burning temperature of the pore-forming agent and foam carbon is 500°C, and t...

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Abstract

The invention discloses porous ceramic for an electronic cigarette atomization core with low thermal conductivity and high porosity and a preparation method of the porous ceramic, and particularly relates to the field of ceramic materials. Raw materials used in the invention comprise, by mass, 1%-15% of mullite, 40%-60% of diatomite, 5%-25% of alumina hollow spheres, 1%-5% of foamy carbon powder, 10%-15% of a pore-forming agent, 1%-8% of an inorganic binder and 0.1%-0.5% of a retarder. The diatomite, mullite and dense foam carbon in the raw materials are of a porous structure, the aluminum oxide hollow spheres are of a hollow structure, the pore-forming agent can be used for forming pores in the porous ceramic, meanwhile, mullite can also play a role of aggregate, and through reasonable matching according to the proportion, the prepared porous ceramic atomizing core has relatively low thermal conductivity and relatively high apparent porosity.

Description

technical field [0001] The embodiments of the present invention relate to the field of ceramic materials, and in particular relate to porous ceramics for a low-thermal-conductivity high-porosity electronic cigarette atomizing core and a preparation method thereof. Background technique [0002] Porous ceramics are widely used in electronic vaporizers because of their high porosity, good oil absorption, and good liquid storage properties, and the ceramics themselves are resistant to high temperatures and are not prone to burnt burns. However, the ceramic atomizing cores of electronic cigarettes currently on the market are small in size. During the continuous smoking process, the heating time of the ceramic atomizing cores is long and the time interval is short. There are still ceramic atomizing cores on the market because the thermal conductivity of the atomizing cores is too high. Therefore, it is urgent to develop a porous ceramic material with high porosity and low thermal ...

Claims

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Application Information

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IPC IPC(8): C04B38/08C04B35/63C04B35/622C04B35/14A24F47/00A24F40/40
CPCC04B38/08C04B35/14C04B35/622C04B35/6303A24F40/40A24F47/00C04B2235/3217C04B2235/3463C04B2235/6022C04B2235/656C04B2235/6567C04B2235/5436C04B2235/5427C04B38/067C04B38/068
Inventor 何祥勇伍习飞王平
Owner 江西一创新材料有限公司
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