阅读说明：本技术 一种高还原多孔陶瓷雾化芯及其制备方法 (High-reduction porous ceramic atomizing core and preparation method thereof ) 是由 谭有峰 范文筹 施小罗 李绍江 宋维峰 于 2020-07-10 设计创作，主要内容包括：本发明属于加热雾化领域技术领域,尤其是电子烟领域,涉及一种高还原度多孔陶瓷雾化芯及其制备方法。本发明的制备方法为：量取熔融料石蜡,向熔融料中加入溶剂使熔融料融化成液体,将熔融料与油酸混合后,加入碳化硅10~21份、氧化铝11~24份、石英玻璃24~38份、熔融玻璃粉12~18份、造孔剂7~26份,持续搅拌,搅拌陈腐6h以上,得到浆料,再倒入雾化芯模具中以注压方式成型,冷却后形成预制坯体,使用填埋工艺烧结处理,封闭烧结至600~850℃,保温2h,降温采用空冷急降温,降至室温,即制得高还原度多孔陶瓷雾化芯。本发明高还原度多孔陶瓷雾化芯的雾化雾粒尺寸合理,陶瓷芯雾化烟油后的雾珠饱满、细腻,使得雾化液香味还原度高。(The invention belongs to the technical field of heating atomization, particularly relates to the field of electronic cigarettes, and relates to a high-reduction-degree porous ceramic atomizing core and a preparation method thereof. The preparation method comprises the following steps: weighing melting material paraffin, adding a solvent into the melting material to melt the melting material into liquid, mixing the melting material with oleic acid, adding 10-21 parts of silicon carbide, 11-24 parts of aluminum oxide, 24-38 parts of quartz glass, 12-18 parts of melting glass powder and 7-26 parts of pore-forming agent, continuously stirring, stirring and ageing for more than 6 hours to obtain slurry, pouring the slurry into an atomizing core mold to form in an injection pressing mode, cooling to form a prefabricated blank, sintering by using a filling process, sealing and sintering to 600-850 ℃, preserving heat for 2 hours, cooling by using air cooling to rapidly cool, and cooling to room temperature to obtain the high-reduction-degree porous ceramic atomizing core. The atomized fog particles of the high-reduction-degree porous ceramic atomizing core are reasonable in size, and fog beads of the ceramic core atomized tobacco oil are full and fine, so that the atomized liquid is high in fragrance reduction degree.)

1. The high-reduction porous ceramic atomizing core is characterized by comprising a mixture and a molten material, wherein the mixture comprises the following components in parts by mass: 10-21 parts of silicon carbide, 11-24 parts of alumina, 24-38 parts of quartz glass, 12-18 parts of molten glass powder and 7-26 parts of pore-forming agent; and 50-100 parts of the molten material by mass.

2. The high-reduction porous ceramic atomizing core according to claim 1, wherein the grain size of the silicon carbide, the alumina and the quartz glass is 200-300 meshes; the pore-forming agent is one or two or three or four of starch, carbon black, carbon particles and polymethyl methacrylate; the molten material is paraffin.

3. The preparation method of the high-reduction porous ceramic atomizing core is characterized by comprising the following steps of:

firstly, selecting a mixture according to the mass part, wherein the selection principle is that all components in the mixture are different in shape and distinct in edge angle;

step two, melting the mixed wax solvent at 60-70 ℃, adding 0.5-1% by mass of oleic acid, measuring the molten material, adding the solvent into the molten material to enable the molten material to be pasty, adding the mixture selected in the step one after the molten material and the oleic acid are uniformly dispersed, continuously stirring, and ageing for more than 6 hours to obtain slurry;

step three, selecting a heating wire with the size matched with that of the ceramic body, and then inserting the heating wire into the atomizing core mold;

step four, keeping the temperature of the slurry prepared in the step two at 70-80 ℃, pouring the slurry into an atomizing core mould to be molded in an injection-compression mode, and cooling to form a prefabricated blank body;

and step five, sintering the prefabricated green body prepared in the step four by using a landfill process, wherein the landfill powder is white corundum powder, hermetically sintering to 600-850 ℃, preserving heat for 2 hours, cooling by adopting air cooling for rapid cooling, wherein the cooling rate is not lower than 4 ℃/min before 500 ℃, and cooling to room temperature to obtain the high-reduction-degree porous ceramic atomizing core.

4. The preparation method of the high-reduction porous ceramic atomizing core according to claim 3, characterized in that the mass ratio of the molten material to the oleic acid in the second step is 30:1, the mass ratio of the mixed material to the solvent is 4-5.5: 1, and the stirring speed is not less than 15 r/min.

5. The method for preparing a high-reduction porous ceramic atomizing core according to claim 3, wherein the total width of the heating wire in the third step is-1 mm and the total length of the heating wire is-1 mm; the heating wire is mainly made of nickel, and the rest of the materials are one or two or three or four of chromium, palladium, aluminum and titanium; and the resistance value of the heating wire is 0.9-1.2 omega.

6. The method for preparing the high-reduction porous ceramic atomizing core according to claim 3, wherein the thickness of the atomizing surface of the prefabricated blank in the fourth step is not more than 1.1mm, the width of the oil-permeable surface is not more than 2.5mm, and the injection air pressure is 6-8 kg/cm²。

Technical Field

The invention belongs to the technical field of heating atomization, particularly relates to the field of electronic cigarettes, and relates to a high-reduction-degree porous ceramic atomizing core and a preparation method thereof.

Background

With the rise of the electronic cigarette industry and the industrial expansion, large-scale enterprises are introduced, various heating ceramic atomizing cores appear, but due to the industry difference, the respective emphasis points are respectively provided, part of the heating part is emphasized, and part of the ceramic part is emphasized, so that the heating and oil guiding of the product are not optimal, and the problems of poor reduction degree, dry burning, short service life, oil leakage, more condensate, poor user experience and the like exist.

At present, the most widely used ceramic atomizing core is a porous ceramic body matched with a nickel and iron material heating wire, and as the pore diameter of the ceramic body is rarely adjusted, when the heating power is higher, the atomized liquid is easy to be burnt, the temperature and the shape are gasified, and the taste is poor; when the heating power is low, the temperature of the atomized liquid is low, the essence is heavy, the atomized liquid is easy to become greasy, and the oil is easy to leak. Accordingly, those skilled in the art have provided a highly reducing porous ceramic atomizing core to solve the problems mentioned in the background section above.

Disclosure of Invention

The invention provides a high-reduction-degree porous ceramic atomizing core and a preparation method thereof, and aims to solve the problems that the reduction degree is not rich enough and the user experience is poor in the prior art.

One object of the invention is to provide a high-reduction porous ceramic atomizing core, which comprises a mixture and a molten material, wherein the mixture comprises the following components in parts by weight: 10-21 parts of silicon carbide, 11-24 parts of alumina, 24-38 parts of quartz glass, 12-18 parts of molten glass powder and 7-26 parts of pore-forming agent; and 50-100 parts of the molten material by mass.

The particle sizes of the silicon carbide, the alumina and the quartz glass are all 200-300 meshes; the pore-forming agent is one or more of starch, carbon black, carbon particles and polymethyl methacrylate; the molten material is paraffin.

The invention also aims to provide a preparation method of the high-reduction-degree porous ceramic atomizing core, which comprises the following steps:

selecting a mixture according to the mass part, wherein the selection principle is that all components in the mixture are different in shape and distinct in edge angle so as to ensure the diversity of gaps and the adsorbability of a ceramic body to atomized liquid; crushing the components;

step two, melting the mixed wax solvent at 60-70 ℃, adding 0.5-1% by mass of oleic acid, measuring the molten material, adding the solvent into the molten material to enable the molten material to be pasty, adding the mixture selected in the step one after the molten material and the oleic acid are uniformly dispersed, continuously stirring, and ageing for more than 6 hours to obtain slurry;

step three, selecting a heating wire with the size matched with that of the ceramic body, and then inserting the heating wire into the atomizing core mold;

step four, keeping the temperature of the slurry prepared in the step two at 70-80 ℃, pouring the slurry into an atomizing core mould to be molded in an injection-compression mode, and cooling to form a prefabricated blank body;

and step five, sintering the prefabricated green body prepared in the step four by using a landfill process, wherein the landfill powder is white corundum powder, hermetically sintering to 600-850 ℃, preserving heat for 2 hours, cooling by adopting air cooling for rapid cooling, wherein the cooling rate is not lower than 4 ℃/min before 500 ℃, and cooling to room temperature to obtain the high-reduction-degree porous ceramic atomizing core.

In the second step, the mass ratio of the wax molten material to the oleic acid is 30:1, the mass ratio of the mixture to the solvent is 4-5.5: 1, and the stirring speed is more than or equal to 15 r/min.

The selection requirements of the heating wire in the third step are that the total width of the heating wire is-1 mm of the width of the attached cotton, and the total length of the heating wire is-1 mm of the length of the heating surface of the ceramic core; the main component of the heating wire material is nickel, and the rest components are one or two or three or four of chromium, palladium, aluminum and titanium; and the resistance value of the heating wire is 0.9-1.2 omega.

And in the fourth step, the thickness of the atomization surface of the prefabricated blank is not higher than 1.1mm, the width of the oil penetration surface is not more than 2.5mm, and the injection air pressure is 6-8 kg/cm 2.

After the sintering in the fifth step is finished, the water absorption rate of the high-reduction-degree porous ceramic atomizing core is 30-55%, the surface of the product is fine, and no visible hole exists when the visual distance is 30 cm.

Compared with the prior art, the high-reduction-degree porous ceramic atomizing core has reasonable atomized fog grain size, and the fog beads of the ceramic core atomized tobacco tar are full and fine, so that the atomized liquid has high aroma reduction degree; the product has less condensate liquid in the using process and no condensation phenomenon of atomized liquid on the wall of the cavity.

Drawings

FIG. 1 is an illustration of a ceramic atomizing core with pins;

reference numerals: heating plate 1, ceramic body 2.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to specific examples. The following examples are illustrative only and should not be construed as limiting the scope of the present invention. All the technologies realized based on the above-mentioned contents of the present invention are covered in the protection scope of the present invention.