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Zirconia ceramic fingerprint identification sheet and preparing and application method thereof

A technology for zirconia ceramics and fingerprint recognition, which is applied in ceramic molding machines, ceramic molding workshops, character and pattern recognition, etc., can solve problems such as particle protrusions, uneven casting of green bodies, and bubbles in green bodies, and achieve medium High electrical constant, suitable for large-scale production, and the effect of less processing

Inactive Publication Date: 2017-03-15
HUNAN ZHENGYANG PRECISION CERAMIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] 1. Air bubbles in the billet;
[0014] 2. The casting of the green body is not uniform, and there are problems with raised particles;
[0015] 3. Uniform dispersion of several different raw materials;
[0020] Although

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0040] Example 1

[0041] A zirconia ceramic fingerprint identification sheet, comprising a main body material and an auxiliary material, wherein the main material is zirconia powder, and the auxiliary materials are a binder, a plasticizer, a dispersant and a solvent; the percentages of each material in the total weight are as follows: zirconia Powder: 50%, Binder: 10%, Plasticizer: 10%, Dispersant: 5%, Solvent: 25%.

[0042] Further, the binder is polyethylene and polyvinyl butyral.

[0043] Further, the plasticizer is polyethylene glycol.

[0044] Further, the dispersants are oleic acid and stearic acid.

[0045] Further, the solvent is ethanol.

[0046]A preparation method of a zirconia ceramic fingerprint identification sheet. The preparation process is as follows: after dispersing the main material of zirconia powder, a binder, a plasticizer, a dispersant and a solvent, uniformly mixing to obtain a slurry that can be cast-molded The slurry is subjected to vacuum defoa...

Example Embodiment

[0053] Embodiment 2

[0054] A zirconia ceramic fingerprint identification sheet, comprising a main body material and an auxiliary material, wherein the main material is zirconia powder, and the auxiliary materials are a binder, a plasticizer, a dispersant and a solvent; the percentages of each material in the total weight are as follows: zirconia Powder: 60%, Binder: 3%, Plasticizer: 6%, Dispersant: 1%, Solvent: 30%.

[0055] Further, the binder is polyvinyl chloride.

[0056] Further, the plasticizer is dibutyl phthalate.

[0057] Further, the dispersants are triolein and herring oil.

[0058] Further, the solvent is butanone.

[0059] A preparation method of a zirconia ceramic fingerprint identification sheet. The preparation process is as follows: after dispersing the main material of zirconia powder, a binder, a plasticizer, a dispersant and a solvent, uniformly mixing to obtain a slurry that can be cast-molded The slurry is subjected to vacuum defoaming treatment and...

Example Embodiment

[0066] Embodiment 3

[0067] A zirconia ceramic fingerprint identification sheet, comprising a main body material and an auxiliary material, wherein the main material is zirconia powder, and the auxiliary materials are a binder, a plasticizer, a dispersant and a solvent; the percentages of each material in the total weight are as follows: zirconia Powder: 55%, Binder: 7%, Plasticizer: 3%, Dispersant: 10%, Solvent: 25%.

[0068] Further, the binder is polyethylene and polyvinyl chloride.

[0069] Further, the plasticizers are polyethylene glycol and dibutyl phthalate.

[0070] Further, the dispersants are oleic acid, stearic acid and herring oil.

[0071] Further, the solvent is ethanol and butanone.

[0072] A preparation method of a zirconia ceramic fingerprint identification sheet. The preparation process is as follows: after dispersing the main material of zirconia powder, a binder, a plasticizer, a dispersant and a solvent, uniformly mixing to obtain a slurry that can b...

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PUM

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Abstract

The invention discloses a zirconia ceramic fingerprint identification sheet and a preparing and application method thereof. The zirconia ceramic fingerprint identification sheet is prepared from a main material and auxiliary materials. The main material is zirconia powder, and the auxiliary materials are prepared from a bonding agent, a plasticizer, a dispersing agent and a solvent. The preparing method includes the following steps that the main zirconia powder material, the bonding agent, the plasticizer, the dispersing agent and the solvent are dispersed to be mixed to be even, and slurry capable of carrying out tape casting is obtained; the slurry is subjected to vacuum bubble removing, and a film forming belt is formed in a tape-casting mode; the tape-casting belt is dried to be crop, the product is put into a mold and subjected to punch forming, a punching blank with the required shape is prepared, constant temperature and isostatic pressing are carried out, and a raw blank is obtained; the raw blank is degreased and subjected to glue discharging, and then the product is sintered into ceramic sheets; the ceramic sheets are appearance processing and polished, and then the zirconia ceramic fingerprint identification sheet is obtained. The zirconia ceramic sheet prepared with the method is high in strength, toughness and size accuracy. The tape-casting processing mode is adopted, the following processing amount is small, the preparing production efficiency is high, and large-scale production can be met.

Description

technical field [0001] The invention relates to a ceramic sheet and a preparation method thereof, in particular to a zirconia ceramic fingerprint identification sheet and a preparation method thereof, which are mainly used to be installed in a fingerprint collection panel of a fingerprint identification system and belong to the manufacturing technology of special ceramic products. Background technique [0002] At present, fingerprint recognition has become the standard configuration of smartphones. According to statistics, a total of 27 smartphones were released globally in June 2016, of which 20 smartphones equipped with fingerprint recognition function accounted for 74%. At the same time, driven by the gradual expansion of mobile payment applications, the application scope of fingerprint recognition has also been extended. Not only is mobile phone fingerprint unlocking, but also a wave of fingerprint payment has formed. [0003] Almost all fingerprint mobile phones on th...

Claims

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Application Information

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IPC IPC(8): C04B35/48C04B35/622B28B1/29B28B3/00B28B11/24B28B15/00B28B17/02G06K9/00
CPCC04B35/48C04B35/622B28B1/29B28B3/00B28B11/243B28B15/00B28B17/026C04B2235/604C04B2235/612C04B2235/602G06V40/12
Inventor 王有才
Owner HUNAN ZHENGYANG PRECISION CERAMIC
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