Ceramic diaphragm machine wet casting formula and preparation method thereof

Abstract

The invention discloses a ceramic membrane machine wet process casting formula and a preparation method thereof, the ceramic membrane machine wet process casting formula comprises a ceramic membrane main body, the ceramic membrane main body comprises casting NPO, X7R and Z5U ceramic membrane belts, the ceramic membrane belts are arranged on a PET film, and the PET film is used for bearing the ceramic membrane belts. The PET film is a plastic adhesive tape. The casting ceramic membrane tape is prepared by mixing and grinding the following components in proportion: 3kg of ceramic first-class and second-class ceramic powder, 1.2 kg of butyl acetate, 0.6 kg of absolute ethyl alcohol, 6g of dispersing agent, 6g of defoaming agent and 1.265 kg of adhesive. According to the casting formula disclosed by the invention, the ultrathin ceramic membrane tape is formed; and the thickness is uniform and consistent, the ceramic membrane belt has no hole defect, the product reliability is improved, and the production efficiency is improved. In addition, the industrialization process of ultra-thin high-low frequency ceramic capacitor products can be greatly promoted, and meanwhile the products produced through the method are stable in performance and high in reliability. And in the aspect of productivity, continuous operation can be achieved, the automation degree is high, the production efficiency is high, and the application range is wider.

Description

Technical Field

[0001] The present invention relates to the field of ceramic capacitors and diaphragms, and in particular to a ceramic diaphragm machine wet casting formula and a preparation method thereof. Background Art

[0002] Ceramic diaphragms are generally formed using the traditional rolling film method, where a ceramic film strip is extruded through two rollers. This method is suitable for forming ceramic membranes with a thickness of 0.1mm or more. For ceramic membranes with a thickness of less than 0.1mm, the rolling film forming method has drawbacks such as poor thickness consistency, "holes" in the membrane strip, difficulty in manual operation, and low production efficiency. Although ceramic diaphragms made from ultrafine ceramic powders have high density, good surface finish, and excellent performance, ultrafine ceramic powders have a large specific surface area. The casting slurry prepared using existing methods easily clumps together, making it difficult to cast on a casting machine. Even if a diaphragm green body can be made, it often suffers from severe cracking, resulting in an extremely low yield rate. SUMMARY OF THE INVENTION In view of the deficiencies in the prior art, the present invention provides a type I and II ceramic powder and an organic solvent, a dispersant, a defoaming agent, and an adhesive, wherein the proportions are 3 kg of ceramic powder, 1.2 kg of butyl acetate, 0.6 kg of anhydrous ethanol, 6 g of the three dispersants, 6 g of the three defoaming agents, and 1.265 kg of the adhesive, which are mixed and ground, and then heated and cast. The ceramic membrane tape obtained by the casting formula of the present invention has uniform thickness and no "hole" defects in the membrane, thereby improving product reliability.

[0003] The purpose of the present invention is to be achieved through the following technical solutions

[0004] 1. Ingredient preparation: Rinse the zirconium balls and nylon jars with anhydrous ethanol before mixing, and dry them for later use.

[0005] 2. Ingredients order: 3000g of zirconium balls + 3000g of formula powder + 1200g of butyl acetate + 600g of ethanol + 6.82g of three dispersants + 6.82g of three defoamers

[0006] 3. Roller mill (dispersion) is placed in a small or medium barrel and ball milled on the roller mill for dispersion (18:00--9:00, a total of 20 hours)

[0007] 4 Add adhesive Take out the can and add 1265g of adhesive

[0008] 5. Roller mill (secondary dispersion): Place the can in a medium barrel and then roll it for 25 hours (8:00-15:00).

[0009] 6. Take out the jar after sieving, sieve the slurry through 450 mesh for casting, evacuate the air, install the PET carrier belt on the casting machine, and pour the ceramic slurry into the casting machine to flow into the film.

[0010] The present invention has the following beneficial effects: It utilizes a novel tape-casting formula to not only achieve the formation of ultra-thin ceramic film strips with uniform thickness and the absence of "holes" in the film strips, but also improves product reliability and production efficiency. Furthermore, the present invention can significantly advance the industrialization of ultra-thin high- and low-frequency ceramic capacitors. Furthermore, the products produced by this method have stable performance and high reliability. Furthermore, the invention enables continuous operation, a high degree of automation, and high production efficiency, broadening its application potential. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0012] Figure 1 It is a schematic diagram of the front view structure of the present invention;

[0013] In the figure, 1-ceramic film tape, 2-PET film carrier tape DETAILED DESCRIPTION

[0014] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0016] See Figure 1 The present invention provides a ceramic diaphragm machine wet casting formula and a preparation method thereof.

[0017] The foregoing description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Rather, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the concept described herein by utilizing the above teachings or techniques or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the technology and scope of the present invention should be within the scope of protection of the appended claims.

Claims

1. A ceramic diaphragm machine wet casting formula and a preparation method thereof, characterized in that: The ceramic diaphragm body includes cast NPO, X7R, or Z5U ceramic diaphragms. The ceramic diaphragm tape is mounted on a PET film that supports the ceramic diaphragms. The PET film is a type of plastic tape. The cast ceramic diaphragm tape is made by mixing and grinding Class I and Class II ceramic powders with an organic solvent, dispersant, defoamer, and adhesive in the following ratios: 3kg of ceramic powder, 1.2kg of butyl acetate, 0.6kg of anhydrous ethanol, 6g of three-part dispersant, 6g of three-part defoamer, and 1.265kg of adhesive, followed by heating and casting.

2. According to claim 1, the ceramic diaphragm main body includes cast NPO, X7R, Z5U ceramic membrane tape, and the ceramic membrane tape is on a PET film, and the PET film supports the ceramic membrane tape.

3. According to claim 1, the cast ceramic membrane tape is a formula of mixed grinding of ceramic class I and II ceramic powder and organic solvent, dispersant, defoaming agent, and adhesive, in the following proportions: 3 kg of ceramic powder, 1.2 kg of butyl acetate, 0.6 kg of anhydrous ethanol, 6 g of three dispersants, 6 g of three defoaming agents, and 1.265 kg of adhesive.

4. The ceramic membrane tape according to claim 1 is formed by heating and casting using a casting machine.

5. The ceramic material used according to claim 1 includes NPO, X7R, Z5U and other Class I and Class II ceramics.

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