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Porous silicon carbide ceramic for steam type medical atomizer and preparation method thereof

A technology of porous silicon carbide and atomizer, which is applied in the field of medical equipment to achieve fast heat conduction, outstanding effect, and avoid excessive local temperature

Active Publication Date: 2020-02-21
NINGBO VULCAN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the prior art lacks a porous silicon carbide ceramic with high strength, no slag drop, thermal shock resistance, safety and sanitation, and its preparation method.

Method used

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  • Porous silicon carbide ceramic for steam type medical atomizer and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The present invention comprises the following steps:

[0036] (1) Raw material ratio: 50wt% of silicon carbide, 2wt% of PVA, 10% of montmorillonite, 18% of silicon dioxide, 20wt% of petroleum coke powder. The sum of the above components is 100%;

[0037] (2) Mixing and pulping: put the above-mentioned raw materials into the mixing equipment, add 200% deionized water, and mix and mill for 10 hours to obtain the slurry;

[0038] (3) Spray granulation: the resulting slurry is spray-dried and granulated;

[0039] (4) Compression molding: put the ceramic granulation material into a steel mold, and dry press molding to obtain a green body;

[0040] (5) Sintering: Put the green body into a muffle furnace for sintering at a sintering temperature of 1350°C and keep it warm for 4 hours. Cooling to obtain porous silicon carbide ceramics;

[0041] (6) Put porous silicon carbide ceramics into 30% concentrated acetic acid solution, and soak at room temperature for 24 hours;

[0...

Embodiment 2

[0044] The present invention comprises the following steps:

[0045] (1) Raw material ratio: 70wt% of silicon carbide, 5%wt% of phenolic resin, 5wt% of montmorillonite, 10% of titanium dioxide, and 10wt% of ammonium carbonate. The sum of the above components is 100%;

[0046] (2) Mixing and pulping: put the above-mentioned raw materials into the mixing equipment, add 250% deionized water, and stir at a high speed for 5 hours to obtain a slurry;

[0047] (3) Spray granulation: the resulting slurry is spray-dried and granulated;

[0048] (4) Compression molding: put the ceramic granulation material into a steel mold, and dry press molding to obtain a green body;

[0049] (5) Sintering: put the green body into an air atmosphere tunnel furnace for sintering at a sintering temperature of 1400 degrees, and keep it warm for 2 hours. Cooling to obtain porous silicon carbide ceramics;

[0050] (6) Put the porous silicon carbide ceramic into 20% concentrated acetic acid solution, an...

Embodiment 3

[0053] The present invention comprises the following steps:

[0054] (1) Raw material ratio: 45wt% of silicon carbide, 10wt% of starch, 10wt% of magnesium oxide, 10wt% of calcium carbonate, and 25wt% of coke. The sum of the above components is 100%;

[0055] (2) Mixing and pulping: put the above-mentioned raw materials into the mixing equipment, add deionized water, mix and mill for 6 hours to obtain the slurry;

[0056] (3) Spray granulation: the resulting slurry is spray-dried and granulated;

[0057] (4) Compression molding: put the ceramic granulation material into a steel mold, and dry press molding to obtain a green body;

[0058] (5) Sintering: put the green body into an air atmosphere bell furnace for sintering, the sintering temperature is 1450 degrees, and keep warm for 1 hour. Cool to obtain porous silicon carbide ceramics.

[0059] (6) Put the porous silicon carbide ceramic into 40% concentrated acetic acid solution and soak for 3 hours at room temperature.

...

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Abstract

The invention discloses porous silicon carbide ceramic for a steam type medical atomizer and a preparation method of the porous silicon carbide ceramic. The preparation method comprises the followingsteps: (1) proportioning raw materials: weighing the following raw materials in percentage by weight: 40-70wt% of silicon carbide, 10-30wt% of an adhesive, 10-30wt% of a sintering aid and 10-30wt% ofa pore-forming agent; the sum of the components is 100%; (2) mixing and pulping; (3) carrying out spray granulation; (4) carrying out compression molding; (5) sintering; and (6) carrying out super-hydrophilic treatment: putting obtained porous silicon carbide ceramic into an 10-90% acetic acid solution to be soaked for 2-10 hours in a room temperature environment; and (7) taking out the porous silicon carbide ceramic, cleaning the acetic acid solution on the surface, and finally drying. The steam type medical atomizer prepared from the porous silicon carbide ceramic has the characteristics ofhigh strength, safety, sanitation, no slag falling, high heat conduction speed, thermal shock resistance, high atomization speed and the like.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a porous silicon carbide ceramic for a steam medical nebulizer and a preparation method thereof. Background technique [0002] Nebulization inhalation therapy is an important and effective treatment method in the treatment of respiratory diseases. The medical nebulizer is used to atomize the liquid medicine into tiny particles. The purpose of pain, rapid and effective treatment. Medical nebulizers belong to the second class of medical devices, mainly used to treat various upper and lower respiratory diseases, such as colds, fever, cough, asthma, sore throat, pharyngitis, rhinitis, bronchitis, pneumoconiosis and other trachea, bronchi, alveoli, chest cavity diseases occurring within. [0003] There are three main principles of existing nebulizers: ultrasonic nebulizer, compression nebulizer and mesh nebulizer. The three kinds of nebulizers respectively use ultrasonic wave, compre...

Claims

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Application Information

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IPC IPC(8): C04B35/565C04B38/08C04B38/06C04B38/02C04B35/64C04B41/82A61M11/00
CPCA61M11/001C04B35/565C04B35/64C04B38/08C04B41/46C04B41/82C04B2235/3206C04B2235/3208C04B2235/3217C04B2235/3232C04B2235/3418C04B2235/3427C04B2235/349C04B2235/36C04B2235/48C04B38/068C04B38/067C04B38/02C04B38/0645C04B41/4535
Inventor 邬国平焦永峰谢方民于明亮熊礼俊戚明杰
Owner NINGBO VULCAN TECH CO LTD
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