Porous ceramic atomizing core, preparation method thereof and electronic cigarette

Abstract

The invention discloses a porous ceramic atomizing core, a preparation method thereof and an electronic cigarette. The preparation method comprises the following steps: providing raw materials including ceramic aggregate, a binder, a fluxing agent and a pore-forming agent, the pore-forming agent being selected from one or two of graphite powder and carbon powder; performing wet mixing on the ceramic aggregate, a binder, a fluxing agent and a pore forming agent to obtain a mixture; molding the mixture to obtain a green body; degreasing the green body, and removing the binder to obtain a degreased green body; then sintering the degreased green body in a vacuum or oxygen-free atmosphere, wherein the sintering temperature ranges from 1100 DEG C to 1500 DEG C, thereby forming a sintered green body; and placing the green body in an oxygen-containing atmosphere for a heating reaction, wherein the temperature of the heating reaction is 400-800 DEG C, and the pore-forming agent reacts with oxygen in the oxygen-containing atmosphere; finally removing the pore-forming agent to obtain the porous ceramic atomization core. According to the preparation method, the porous ceramic atomizing core with high strength and high porosity can be obtained.

Description

technical field [0001] The present invention relates to the technical field of ceramic materials, and more specifically, to a porous ceramic atomizing core, a preparation method thereof, and an electronic cigarette. Background technique [0002] The raw materials of the existing porous ceramic atomizing core mainly include ceramic aggregate, binder, flux and pore-forming agent. The preparation method usually includes four steps: mixing, molding, degreasing and sintering. Among them, degreasing is used to remove the pore-forming agent and binder to form a porous structure. Sintering mainly improves the strength of porous ceramics through high temperature. As the sintering temperature increases, the texture of ceramics becomes more and more dense, thereby increasing the strength. However, in order to maintain the porosity of the porous structure, and The sintering temperature is not allowed to be too high, otherwise, with the increase of the sintering temperature, the porous s...

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Problems solved by technology

[0002] The raw materials of the existing porous ceramic atomizing core mainly include ceramic aggregate, binder, flux and pore-forming agent. The preparation method usually includes four steps: mixing, molding, degreasing and sintering. Among them, degreasing is used to remove the pore-forming agent and binder to form a porous structure. Sintering mainly improves the strength of porous ceramics through high temperature. As the sintering temperature increases, the texture of ceramics becomes more and more dense, thereby increasing the strength. However, in order to maintain the porosity of the porous structure, and The sintering temperature is not allowed to be too high, otherwise, with the increase of the sintering temperature, the porous structure will shrink more and more, and the porosity will become smaller. In addition, the porous structure is prone to collapse during the shrinkage process. Therefore, the existing porous ceramic atomization It is difficult for the core to meet high strength under the condition of high porosity, and the strength is low. The atomizing core is not only easy to drop powder, which affects the taste of the suction, but also easy to be damaged during assembly, which affects the product yield.

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