Microporous ceramic atomizing core and its manufacturing method

Abstract

The present invention discloses a microporous ceramic atomizing core and a method for manufacturing the same. The microporous atomizing core includes, as raw materials and their mass parts, 10-50 parts of main material, 0-40 parts of ceramic powder, 10-50 parts of combustion improver, 0-20 parts of pore former, 20-50 parts of paraffin, and 0.1-2.0 parts of surfactant. The main material includes at least one of diatomaceous earth, silica aerogel powder, and porous boron nitride. The particle size of the main material is 200-1500 mesh. The microporous ceramic atomizing core of the present invention improves the porosity and liquid stopping ability of the atomizing core by adding a main material with micropores and a high specific surface area. This reliably ensures sufficient atomization of the atomizing liquid, and enhances the use experience of the atomizing core.

Description

[Technical Field]

[0001] The present invention relates to the technical field of atomization, and in particular to a microporous ceramic atomizing core and a method for manufacturing the same. [Background technology]

[0002] Ceramic atomizing cores are core components in the atomization field of electronic cigarettes, etc. With the development of this field, people's requirements for ceramic atomizing cores go beyond atomization, and atomization effect has also become one of the important indicators for evaluating atomizing cores.

[0003] Current ceramic atomizing cores have major problems, such as large atomized particles, leakage during use or transportation, and shrinkage and deformation of the atomizing core due to high-temperature sintering, which severely restrict the development of ceramic atomizing cores. Summary of the Invention [Problem to be solved by the invention]

[0004] The technical problem to be solved by the present invention is to provide a microporous ceramic atomizing core having high porosity and improving atomizing efficiency, and a method for manufacturing the same. [Means for solving the problem]

[0005] The technical solution adopted by the present invention to solve the technical problem is to provide a microporous ceramic atomizing core, which comprises, as raw materials and their mass parts, 10-50 parts of main material, 0-40 parts of ceramic powder, 10-50 parts of combustion improver, 0-20 parts of pore-forming agent, 20-50 parts of paraffin, and 0.1-2.0 parts of surfactant.

[0006] The primary material includes at least one of diatomaceous earth, silica aerogel powder, and porous boron nitride, and the particle size of the primary material is 200 to 1500 mesh.

[0007] Preferably, the ceramic powder contains at least one of quartz sand, silicon nitride, silicon powder and corundum, and has a particle size of 100 to 1500 mesh.

[0008] Preferably, the combustion improver is a metal oxide or glass powder, has a particle size of 200 to 2000 mesh, and has a melting start temperature of 300 to 600°C.

[0009] Preferably, the metal oxide is at least one of magnesium oxide, titanium dioxide, and niobium oxide.

[0010] Preferably, the glass powder is a lead-free low-melting glass powder, a rare element-containing low-melting glass powder, or a boron-containing low-melting glass powder.

[0011] Preferably, the pore-forming agent includes at least one of wheat flour, PS microspheres, and rice husk powder, and has a particle size of 200 to 1000 mesh.

[0012] Preferably, the paraffin is semi-refined or refined paraffin, and has a melting point of 40 to 100°C.

[0013] Preferably, the surfactant comprises at least one of sorbitan fatty acid ester, polysorbate, and oleic acid.

[0014] The present invention further provides a method for manufacturing a microporous ceramic atomizing core, the method comprising the steps of:

[0015] S1: Mix the raw materials according to the mass parts and press to form a base material.

[0016] S2: The green body is placed in a sintering furnace and sintered at 500 to 800°C. [Effects of the Invention]

[0017] The beneficial effects of the present invention are as follows: the addition of a micro-pore, high-specific surface area primary material improves the porosity and liquid-stopping ability of the atomizing core, thereby ensuring sufficient atomization of the atomizing liquid and enhancing the use experience of the atomizing core.

[0018] During production, sintering and molding are carried out at low temperatures (500 to 800°C), so the production conditions are simple and the process is easy to carry out.

[0019] The present invention will be further described below in combination with the drawings and examples. [Brief explanation of the drawings]

[0020]

Figure 1

Figure 2

[0021] In order to make the technical features, objects and effects of the present invention more clearly understood, specific embodiments of the present invention will be described in detail with reference to the drawings.

[0022] The microporous ceramic atomizing core of the present invention is made up of raw materials and their mass parts, which are 10 to 50 parts of a main material, 0 to 40 parts of ceramic powder, 10 to 50 parts of a combustion improver, and a pore-forming agent. 0 20 to 50 parts of paraffin and 0.1 to 2.0 parts of surfactant.

[0023] The main material is selected to have micropores and a high specific surface area, which improves the liquid stopping effect at the atomizing core and allows for fine atomized particles. The main material includes at least one of diatomaceous earth, silica aerogel powder, and porous boron nitride. The particle size of the main material is 200 to 1500 mesh.

[0024] Of the main materials, diatomaceous earth is primarily composed of silicate and has countless pores on its surface, giving it advantages such as excellent adsorption performance, a light weight per unit volume, uniform fineness, a neutral and non-toxic pH, and excellent uniformity when mixed. Figure 1 shows an SEM image of diatomaceous earth. Evaluation of the micromorphology characteristics of the diatomaceous earth powder particles shown in the figure reveals that the diatomaceous earth has a uniform distribution of micropores and a large specific surface area.

[0025] Silica aerogel powder is an aerogel material produced by atmospheric drying, and has low density, low thermal conductivity, high specific surface area, and high adsorption. Porous boron nitride is a new non-oxide porous material whose interior is composed of interconnected or blocked pores, resulting in a high specific surface area and abundant tunnel structures. The pore size can be adjusted to suit the actual application.

[0026] The ceramic powder may include at least one of quartz sand, silicon nitride, silicon powder, and corundum as the skeleton material of the microporous ceramic atomizing core, and the preferred particle size of the ceramic powder is 100-1500 mesh.

[0027] The combustion improver is a metal oxide or glass powder, with a particle size of 200 to 2000 mesh and a melting start temperature of 300 to 600°C. The metal oxide may be at least one of magnesium oxide, titanium dioxide, niobium oxide, etc. The glass powder may be a lead-free low-melting glass powder, a rare element-containing low-melting glass powder, or a boron-containing low-melting glass powder.

[0028] The pore-forming agent is at least one of wheat flour, PS microspheres, and rice husk powder, and has a particle size of 200 to 1000 mesh.

[0029] The paraffin is semi-refined or refined paraffin, and has a melting point of 40 to 100°C.

[0030] The surfactant is at least one of sorbitan fatty acid ester (Span), polysorbate (Tween), and oleic acid.

[0031] The manufacturing method of the microporous ceramic atomizing core in the present invention includes the following steps:

[0032] S1: Mix the raw materials according to the mass parts and press to form a base material.

[0033] For press molding, hot die casting may be used, or dry press molding may be used.

[0034] S2: The green body is placed in a sintering furnace and sintered at 500-800°C to obtain a micro-pore atomization core by a single sintering method.

[0035] As can be understood, the manufacturing method of the microporous ceramic atomizing core in the present invention is not limited to the above-mentioned hot die casting or dry pressing, and any other methods for molding and manufacturing the atomizing core can be used.

[0036] An SEM image of the microporous ceramic atomizing core of the present invention is shown in Figure 2. It can be seen from the figure that the atomizing core not only has pores formed by particle deposition and pore-forming agents, but also significantly increases the number of micropores by adding the main material. This ensures reliable liquid supply and significantly improves the capillary action of the microporous atomizing core, greatly improving the liquid storage and retention performance. This ensures sufficient liquid supply during atomizer operation and produces fine atomized particles.

[0037] The present invention will be further described below with reference to specific examples.

[0038] Example 1: Each ingredient MassThe components were 80 parts of diatomaceous earth, 50 parts of glass powder, 50 parts of paraffin, and 0.5 parts of oleic acid. After mixing the above raw materials, they were hot die-cast and sintered once at 500 to 800°C to form a micro-pore atomizing core.

[0039] Example 2: The same procedure as in Example 1 was carried out except that the diatomaceous earth was replaced with silica aerogel powder.

[0040] Example 3: The same procedure as in Example 1 was carried out except that porous boron nitride was used instead of diatomaceous earth.

[0041] Example 4: Based on Example 1, the same procedure was followed as in Example 1, except that 10 parts of wheat flour was added as a raw material.

[0042] Example 5: Based on Example 1, the same procedure was followed as in Example 1, except that 20 parts of wheat flour was added as a raw material.

[0043] Example 6: Each ingredient Mass The parts were 40 parts of diatomaceous earth, 10 parts of silicon powder, 50 parts of glass powder, 20 parts of wheat flour, 40 parts of paraffin, and 0.5 parts of oleic acid. After mixing the above raw materials, they were hot die-cast and sintered once at 500-800°C to form a micro-pore atomizing core.

[0044] Example 7: Each ingredient Mass The components were 40 parts of diatomaceous earth, 20 parts of silicon powder, 40 parts of glass powder, 20 parts of wheat flour, 40 parts of paraffin, and 0.5 parts of oleic acid. After mixing the above raw materials, they were hot die-cast and sintered once at 500-800°C to form a micro-pore atomizing core.

[0045] Example 8: Each ingredient MassThe parts were 40 parts of diatomaceous earth, 20 parts of quartz sand, 40 parts of glass powder, 20 parts of wheat flour, 40 parts of paraffin, and 0.5 parts of oleic acid. After mixing the above raw materials, they were hot die-cast and sintered once at 500-800°C to form a micro-pore atomizing core.

[0046] Example 9: Each ingredient Mass The parts were 40 parts of diatomaceous earth, 20 parts of corundum, 40 parts of glass powder, 20 parts of wheat flour, 40 parts of paraffin, and 0.5 parts of oleic acid. After mixing the above raw materials, they were hot die-cast and sintered once at 500-800°C to form a micro-pore atomizing core.

[0047] Example 10: Each ingredient Mass The components were 40 parts of silica aerogel powder, 20 parts of silicon powder, 40 parts of glass powder, 20 parts of wheat flour, 40 parts of paraffin, and 0.5 parts of oleic acid. After mixing the above raw materials, they were hot die-cast and sintered once at 500-800°C to form a micro-pore atomization core.

[0048] Example 11: Each ingredient Mass The components were 40 parts porous boron nitride, 20 parts silicon powder, 40 parts glass powder, 20 parts wheat flour, 40 parts paraffin, and 0.5 parts oleic acid. After mixing the above raw materials, they were hot die-cast and sintered once at 500-800°C to form a micro-pore atomizing core.

[0049] Comparative Example 1: Each ingredient Mass The parts were 70 parts corundum, 30 parts glass powder, 20 parts wheat flour, 30 parts paraffin, and 0.5 parts oleic acid. After mixing the above raw materials, they were hot die-cast and sintered once at 500-800°C to form a micro-pore atomization core.

[0050] Comparative Example 2: Each ingredient MassThe parts were 70 parts of quartz sand, 30 parts of glass powder, 20 parts of wheat flour, 30 parts of paraffin, and 0.5 parts of oleic acid. After mixing the above raw materials, they were hot die-cast and sintered once at 500-800°C to form a micro-pore atomization core.

[0051] The porosity (Archimedes method) and water absorption of the microporous atomizing cores obtained in Examples 1 to 11 and Comparative Examples 1 and 2 were measured, and the measurement results are shown in Table 1.

[0052] [Table 1]

[0053] As can be seen from the results in Table 1, compared to the comparative example, which had problems such as low porosity and large pore size in the atomizing core, low liquid storage capacity of the atomizing core, and prone to liquid leakage, in the present invention, by adding main materials such as diatomaceous earth, the porosity of the micro-porous atomizing core is significantly increased, and the average pore size can be maintained at a relatively stable and small level, reliably ensuring the atomizing core's excellent liquid retention ability.

[0054] The above description is merely an embodiment of the present invention, and does not limit the scope of the present invention. Any equivalent structure or equivalent flow modification made using the contents of the specification and drawings of the present invention, or any direct or indirect operation in other related technical fields, is also included in the scope of protection of the present invention for the same reasons.

Claims

1. The raw materials and their mass parts include 10 to 50 parts of a main material, 0 to 40 parts of a ceramic powder, 10 to 50 parts of a combustion improver, 0 to 20 parts of a pore-forming agent, 20 to 50 parts of paraffin, and 0.1 to 2.0 parts of a surfactant; The ceramic powder is always included in the raw material, the primary material is microporous and includes at least one of diatomaceous earth, silica aerogel powder, and porous boron nitride, and the particle size of the primary material is 200-1500 mesh; the ceramic powder is corundum, The surfactant includes at least one of sorbitan fatty acid ester and polysorbate. A microporous ceramic atomizing core.

2. 2. The microporous ceramic atomizing core according to claim 1, wherein the ceramic powder has a particle size of 100-1500 mesh.

3. The microporous ceramic atomizing core according to claim 1, wherein the combustion improver is a metal oxide or glass powder, with a particle size of 200-2000 mesh and a melting temperature of 300-600°C.

4. 4. The microporous ceramic atomizing core according to claim 3, wherein the metal oxide is at least one of magnesium oxide, titanium dioxide, and niobium oxide.

5. 4. The microporous ceramic atomizing core according to claim 3, wherein the glass powder is a lead-free low-melting glass powder, a rare element-containing low-melting glass powder, or a boron-containing low-melting glass powder.

6. The microporous ceramic atomizing core according to claim 1, wherein the pore-forming agent comprises at least one of wheat flour, PS microspheres and rice husk powder, and has a particle size of 200-1000 mesh.

7. 2. The microporous ceramic atomizing core according to claim 1, wherein the paraffin is semi-refined or refined paraffin, and has a melting point of 40-100°C.

8. A method for producing the microporous ceramic atomizing core according to any one of claims 1 to 7, comprising: S1: Mix the raw materials according to the mass parts and press them to form a base material. S2: The green body is placed in a sintering furnace and sintered at 500 to 800°C. A method comprising the steps of:

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