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Preparation method of an easy-to-assemble ceramic drug delivery atomizing core

A technology of atomizing core and ceramics, which is applied in the direction of therapeutic atomizers, etc., can solve the problems of difficult assembly of atomizing core, grain growth, easy oxidation, etc., achieve precise temperature range control, reduce sintering temperature, and avoid The effect of oxidation

Active Publication Date: 2022-03-04
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the problem of difficult assembly of traditional atomizing cores, this invention proposes to use a slot-type structure to realize the assembly of ceramic drug delivery atomizing cores; in view of the problems of current atomizing heating components that are easy to oxidize, grow grains, and become brittle at high temperatures, this invention On the one hand, the invention proposes adding a sintering aid to the ceramic raw material to reduce the sintering temperature; on the other hand, the heating resistance wire is embedded in the atomizing core matrix, and the contact with the electrode sheet is realized through the metal buckles at both ends, which not only avoids heat generation During the high-temperature sintering process, the components are exposed to the outside of the atomizing core to cause oxidation and brittleness. It also avoids the trouble of coating the traditional heating layer on the surface of the atomizing core, simplifies the preparation process of the atomizing core, and saves production. Cost; In addition, through the design of the concave points at both ends and the metal buckle structure, the injection molding integrated preparation of the drug delivery atomizing core with heating wire can be realized, and the shape and size of the atomizing core can be customized, and the design is more free and flexible

Method used

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  • Preparation method of an easy-to-assemble ceramic drug delivery atomizing core
  • Preparation method of an easy-to-assemble ceramic drug delivery atomizing core
  • Preparation method of an easy-to-assemble ceramic drug delivery atomizing core

Examples

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Effect test

Embodiment example 1

[0033] To prepare an easy-to-assemble ceramic drug delivery atomizing core, it is prepared according to the following steps:

[0034] (1) The ceramic powder and the PbO sintering aid were weighed according to the mass ratio of 95:5, and put into a mixer for mixing. The mixing time was 2 hours, and the mixed powder was obtained after uniform mixing. Among them, the ceramic powder is made of 20wt.% Al 2 o 3 , 75wt.% SiC, 5wt.% SiO 2 Composition, powder particle size 15μm;

[0035] (2) Mix the mixed powder and wax-based binder at a volume ratio of 58:42, carry out banburying, banburying temperature is 170°C, banburying time is 60min, and use a feeder to crush and extrude to obtain ceramic feed. Wherein, the wax-based binder is composed of PW:PP:EVA:SA=60:17:15:8 (mass ratio).

[0036] (3) Design and manufacture injection molds according to the shape of the atomizing core, so that each set of molds has 50 sets of cavities, and two concave points are provided on both sides of e...

Embodiment example 2

[0043] To prepare an easy-to-assemble ceramic drug delivery atomizing core, it is prepared according to the following steps:

[0044] (1) Combine ceramic powder with 1wt.%PbO3wt.%TiO 2 Weigh according to the proportion, and then put into a mixer for mixing, the mixing time is 4h, and the mixed powder is obtained after uniform mixing. Among them, the ceramic powder is composed of 70wt.% SiC, 30wt.% Al 2 o 3 Composition, powder particle size 8μm.

[0045] (2) Mix the mixed powder and the plastic-based binder at a volume ratio of 62:38, carry out banburying, the banburying temperature is 185°C, and the banburying time is 30 minutes, and crush and extrude with a feeder to obtain ceramic feed. Wherein, the plastic-based adhesive is composed of POM:PE:EVA:SA=83:10:5:2 (mass ratio).

[0046] (3) Design and manufacture injection molds according to the shape of the atomizing core, so that each set of molds has 40 sets of cavities, and two concave points are arranged on both sides o...

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Abstract

A preparation method of an easily assembled ceramic drug delivery atomizing core belongs to the field of inorganic composite materials. The invention adopts a slot-type structure to realize the assembly of the ceramic drug delivery atomizing core. The sintering temperature is reduced by adding a sintering aid to the ceramic raw material, and the heating resistance wire is embedded in the atomizing core matrix to realize the atomizing core through injection molding technology. The integrated batch forming with the heating wire, after degreasing and sintering, obtains the ceramic drug delivery atomizing core, which is finally assembled on the atomizing device through the slot structure to realize the drug delivery atomization effect. By designing the concave point and metal buckle structure, the integrated forming of the heating wire and the atomizing core is realized, eliminating the embrittlement of the heating wire, waste of human resources, and contact caused by the assembly of the heating wire and the atomizing core through the traditional process. problems, etc. The invention has the advantages of convenient assembly, greatly reduced manual assembly cost, convenient realization of automatic mass production, and high applicability.

Description

technical field [0001] The invention belongs to the field of inorganic composite materials and provides a preparation method of an easy-to-assemble ceramic drug delivery atomizing core. Background technique [0002] At present, the atomizing cores on the market are made of ceramic materials such as alumina and silicon carbide. During the working process of the heating device, the ceramic matrix heats up quickly, the heat conduction uniformity is good, and the temperature range is controlled precisely, which can greatly reduce Aldehydes and ketones are produced during use, and the use process is safe. [0003] Most of the ceramic drug delivery atomizing cores use nickel-chromium, nickel-chromium-iron and other heat-generating resistance layer materials to realize the heating and drug delivery of the atomizing core. Generally speaking, the heating resistance layer is combined and fixed with the atomizing core through welding, printing, integrated sintering, etc., and then con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61M11/04C04B35/565C04B35/64C04B35/622
CPCA61M11/042C04B35/565C04B35/64C04B35/622C04B2235/3217C04B2235/3418C04B2235/3232C04B2235/3296C04B2235/3241C04B2235/3272C04B2235/3267
Inventor 杨芳常慧荣张耕秋郭志猛秦乾陈存广祁妙邵艳茹
Owner UNIV OF SCI & TECH BEIJING
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