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Preparation method of SIC porous ceramic material used as e-liquid carrier of electronic cigarette atomizer

A ceramic material and carrier technology, which is applied in the field of preparation of SiC porous ceramic materials, can solve the problems of low thermal conductivity porous ceramics, slow heating rate, slow atomization process, asymmetry, etc., and achieve good room temperature and high temperature strength and flexural strength The effect of increasing and improving mechanical properties

Active Publication Date: 2021-01-05
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of clay or mineral-based porous ceramics is their low thermal conductivity, which leads to low heating rates of porous ceramics, making the entire atomization process slower, so this is a serious problem for many "e-cigarette" consumers The problem
One way to speed up the atomization speed is to increase the heating power, but high power causes the temperature of the heating wire to rise sharply, and as a result, more formaldehyde is produced
In addition, the thin heating wire causes an asymmetrical temperature distribution in the porous ceramic, resulting in carbonization of the e-liquid

Method used

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  • Preparation method of SIC porous ceramic material used as e-liquid carrier of electronic cigarette atomizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A SiC porous ceramic material used as an e-liquid carrier for an electronic cigarette atomizer and a preparation method thereof, comprising the following steps:

[0026] ① Raw material ratio: The raw materials are calculated as follows in parts by weight:

[0027] Silicon carbide 90;

[0028] Aluminum hydroxide 10;

[0029] Additional pore-forming agent graphite 25;

[0030] Plus pore-forming agent starch 40.

[0031] ② Mixing of raw materials: Mix silicon carbide, industrial aluminum hydroxide, graphite and starch in a ball mill, and the ratio of ball to material is 1:2;

[0032] 3. Raw material granulation: Pour the mixture into the mortar, add 5% PVA aqueous solution (plus 2wt%) to the mixture as a molding binder, mix the mixture, and granulate;

[0033] ④ Raw materials are stale: put them in a closed environment and stale for 24 hours to make the PVA aqueous solution evenly distributed and prepare for the green body molding;

[0034] ⑤ Body forming: semi-dry pr...

Embodiment 2

[0041] A SiC porous ceramic material used as an e-liquid carrier for an electronic cigarette atomizer and a preparation method thereof, comprising the following steps:

[0042] ① Raw material ratio: The raw materials are calculated as follows in parts by weight:

[0043] Silicon carbide 80;

[0044] Aluminum hydroxide 20;

[0045] Additional pore-forming agent graphite 25;

[0046] Plus pore-forming agent starch 40.

[0047] ② Mixing of raw materials: Mix silicon carbide, industrial aluminum hydroxide, graphite and starch in a ball mill, and the ratio of ball to material is 1:2;

[0048] 3. Raw material granulation: Pour the mixture into the mortar, add 5% PVA aqueous solution (plus 2wt%) in the mixture as a forming binder, mix the material evenly, and granulate;

[0049] ④ Raw material stale: put it in a closed environment and stale for 24 hours, so that the PVA aqueous solution can be evenly distributed and prepare for the molding of the green body;

[0050] ⑤ Body form...

Embodiment 3

[0057] A SiC porous ceramic material used as an e-liquid carrier for an electronic cigarette atomizer and a preparation method thereof, comprising the following steps:

[0058] ① Raw material ratio: The raw materials are calculated as follows in parts by weight:

[0059] Silicon carbide 90;

[0060] Aluminum hydroxide 10;

[0061] Additional pore-forming agent graphite 25;

[0062] Plus pore-forming agent starch 25.

[0063] ② Mixing of raw materials: Mix silicon carbide, industrial aluminum hydroxide, graphite and starch in a ball mill, and the ratio of ball to material is 1:2;

[0064] 3. Raw material granulation: Pour the mixture into the mortar, add 5% PVA aqueous solution (plus 2wt%) to the mixture as a molding binder, mix the mixture, and granulate;

[0065] ④ Raw materials are stale: put them in a closed environment and stale for 24 hours to make the PVA aqueous solution evenly distributed and prepare for the green body molding;

[0066] ⑤ Body forming: semi-dry pr...

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PUM

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Abstract

The invention discloses a preparation method for an SiC porous ceramic material used as an electronic cigarette atomizer tobacco tar carrier. The method comprises the following steps: mixing silicon carbide, aluminium hydroxide, graphite and starch in a ball mill, to obtain a mixture; pouring the mixture into a mortar, adding 5wt% of PVA water solution to the mixture, using as a forming binder, uniformly mixing, and pelleting; forming according to a shape design, placing in an oven in a temperature of 95-100 DEG C, and drying for 8-12 h; and warming in a speed of 3 DEG C / min, keeping the highest firing temperature of 1300-1400 DEG C for 120 min. The saturated oil absorption of the SiC porous ceramic material prepared by the method reaches 35-45%, the rupture strength reaches 15-35 MPa, theaverage heat conductivity (a temperature range is 25-500 DEG C) is 2.5-4 W / (m*K), the SiC porous ceramic material is not cracked by 50 times of heat shock circulation from a room temperature to 400 DEG C, and the rupture strength is improved to some extent.

Description

technical field [0001] The invention belongs to the technical field of ceramics, and in particular relates to a preparation method of a SiC porous ceramic material used as an e-liquid carrier of an electronic cigarette atomizer. Background technique [0002] The e-liquid carrier in the atomizer is an important part of the electronic cigarette. The most common e-liquid carriers are glass fiber oil guide rope and cotton. There are two disadvantages of glass fiber oil guide rope: 1) glass fiber debris is easy to fall off, and is inhaled into the lungs with the airflow, endangering human health; 2) the change in the structure of the new generation of electronic cigarette products is no longer suitable for oil guide rope Tobacco has entered the era of big smog, which requires not only rapid oil conduction and high temperature resistance, but also the ability to absorb and store e-liquid. There are two disadvantages of cotton: 1) The residue of e-liquid is relatively serious and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/06C04B35/565C04B35/622A24F47/00
CPCC04B35/565C04B35/622C04B38/068C04B2235/3218C04B2235/96C04B2235/9607C04B2235/6567C04B2235/6562C04B38/0645
Inventor 邓腾飞洪俊杰朱峰
Owner WUHAN UNIV OF TECH