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Flexible diaphragm type ceramic material and preparation method thereof

A ceramic material, diaphragm type technology, applied in the field of ceramic materials, can solve the problems of different sizes, irregular ferrite fragments, the physical properties of flexible ferrite diaphragms and the effect of use, etc., to improve physical properties, Uniform size effect

Active Publication Date: 2014-08-06
GUANGZHOU MAGNET ELECTRICITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ferrite fragments broken by calendering and crushing are very irregular, often of different sizes and shapes, which affects the physical properties and use effects of the obtained flexible ferrite diaphragm.

Method used

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  • Flexible diaphragm type ceramic material and preparation method thereof
  • Flexible diaphragm type ceramic material and preparation method thereof
  • Flexible diaphragm type ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] The preparation method of the flexible diaphragm type ceramic material of the present invention comprises the following steps:

[0033] 1) Preparation of ceramic sintered sheets printed with grid-shaped grooves, the specific process is:

[0034] 1a) Prepare ceramic slurry according to a certain ratio according to different ceramic material formulations;

[0035] 1b) Provide a forming die 10 with grid-like projections; see figure 1 The forming mold 10 can be a knife mold or a plastic flexible film such as PET, PVC, PP, PE, PU, ​​etc., and the grid pattern on it is a pattern formed by the intersecting of several protrusions in different directions; for example, A rectangular or square pattern formed by the intersection of transverse protrusions 12 and longitudinal protrusions 14 (that is, the transverse protrusions 12 are parallel to each other with equal spacing, and the longitudinal protrusions 14 are parallel to each other with equal spacing), wherein any two adjacent...

Embodiment 1

[0044] Utilize the preparation method of the present invention to prepare a kind of flexible sintered ferrite sheet:

[0045] Step 1: Mix and stir the ferrite powder and the binder, and prepare a slurry according to the weight ratio of 75:25;

[0046] Step 2: Prepare a PET film with grid-shaped protrusions, the intersection of its transverse protrusions and longitudinal protrusions is connected; the cross-sections of the transverse protrusions and the longitudinal protrusions are all inverted U-shaped, and the width of all protrusions Both are 0.05mm, the height is 0.1mm, and the parallel distance between two adjacent protrusions is 1mm;

[0047] Step 3: Use a coating machine to evenly coat the ferrite slurry on the PET film with grid-shaped protrusions prepared in Step 2, and the coating thickness is 0.15mm;

[0048] Step 4: Place the coated PET film and ferrite coating horizontally, with the ferrite coating on the bottom and the PET film on top, and let it dry naturally for...

Embodiment 2

[0055] Utilize the preparation method of the present invention to prepare a kind of flexible micro-alumina sintered sheet:

[0056] Step 1: Mix and stir the alumina powder and the binder, and prepare a slurry according to the weight ratio of 80:20;

[0057] Step 2: Prepare a PP film with grid-shaped protrusions, the transverse protrusions are disconnected at the intersection with the longitudinal protrusions, and the disconnection distance is 0.1 mm; the cross-sections of the transverse protrusions and the longitudinal protrusions are both Inverted V shape, the width of all protrusions is 0.1mm, the height is 0.15mm, the parallel distance between two adjacent horizontal protrusions is 1.5mm, and the parallel distance between two adjacent longitudinal protrusions is 2.0mm;

[0058] Step 3: Use a coating machine to evenly coat the alumina slurry on the PP film with grid-shaped protrusions prepared in Step 2, and the coating thickness is 0.2mm;

[0059] Step 4: Place the coated ...

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Abstract

The invention discloses a flexible diaphragm type ceramic material and a preparation method thereof. The flexible diaphragm type ceramic material comprises a ceramic material layer and a flexible support diaphragm attached to at least one surface of the ceramic material layer, the ceramic material layer consists of ceramic fragments with uniform sizes and regular arrangement. The preparation method comprises the following steps: 1) a ceramic sintering piece printed with grid grooves is prepared; 2) at least one surface of the ceramic sintering piece is attached to the flexible support diaphragm with adhesion agents; 3) the ceramic sintering piece attached with the flexible support diaphragm is pressed or bent, so that the ceramic sintering piece is cracked along groove lines to form the ceramic fragments with uniform sizes and regular arrangement, and obtain the flexible diaphragm type ceramic material. Compared with the prior art, as the fragments of the ceramic material layer prepared by the flexible diaphragm type ceramic material have uniform sizes and neat fracture surfaces, favorable flexibility of the flexible diaphragm type ceramic material is ensured, the flexible diaphragm type ceramic material can be bent in arbitrary directions, and at the same time, the physical properties of products are effectively improved.

Description

technical field [0001] The invention belongs to the field of ceramic materials, and more specifically, the invention relates to a flexible diaphragm type ceramic material and a preparation method thereof. Background technique [0002] Ceramic materials are a kind of inorganic non-metallic materials made of natural or synthetic compounds after forming and high-temperature sintering. They have the advantages of high melting point, high hardness, high wear resistance, oxidation resistance, etc., and are widely used. However, the hardness of ceramic materials is very high, and it is often difficult to meet the flexibility requirements of certain application fields in reality. For example: the application of sintered ferrite in the NFC field, due to the packaging conditions of NFC devices, ferrite films are required The sheet has the characteristics of being easy to bend, easy to cut, and not easy to break. In order to solve the above problems, the current method is to paste a l...

Claims

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Application Information

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IPC IPC(8): B32B18/00C04B35/622
Inventor 郭春生饶汝聪
Owner GUANGZHOU MAGNET ELECTRICITY
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