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Difunctional pressure sensor alumina ceramic material and preparation method thereof

A technology of pressure sensors and alumina ceramics, applied in ceramic products, other household appliances, applications, etc., can solve the problems of poor impact resistance, high dielectric loss, low dielectric constant, etc., to improve insulation performance, high dielectric Electricity constant, the effect of increasing the dielectric constant

Inactive Publication Date: 2021-04-16
HUNAN MEICHENG CERAMIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The sensor ceramic materials in the prior art have high or low mechanical strength, are not easy to be processed into the required shape or have poor impact resistance, low dielectric constant and high dielectric loss, and do not meet the needs of chips on the existing market. Standardized and miniaturized sensor electronic sensor ceramic material requirements

Method used

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  • Difunctional pressure sensor alumina ceramic material and preparation method thereof
  • Difunctional pressure sensor alumina ceramic material and preparation method thereof
  • Difunctional pressure sensor alumina ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A dual-function pressure sensor alumina ceramic material provided in this embodiment includes the following components by weight components:

[0035]

[0036]

[0037] Among them, the CaCu 2.5 Ni 0.5 Ti 4 o 12 The preparation method of nano particle material, comprises the following steps:

[0038] S1: Add 5 parts of tetraisopropyl bis(dioctylphosphite acyloxy) titanate to 20 parts of acrylic acid, and stir evenly at 150 rpm;

[0039] S2: To the mixed solution obtained in step S1, add Ca(NO 3 ) 2 4H 2 O, Cu(NO 3 ) 2 ·3H 2 O and Ni(NO 3 ) 2 ·6H 2 O, ultrasonically oscillate at 100°C for 1 h, and continuously add 12 parts of 5% ammonium persulfate solution dropwise during the oscillating process;

[0040] S3: Stir the mixture obtained in step S1 and the mixture obtained in step S2 at 65°C and 300rpm to 350rpm for 20min to obtain CaCu 2.5 Ni 0.5 Ti 4 o 12 Nano precursor solution;

[0041] S4: the CaCu obtained in the step S3 2.5 Ni 0.5 Ti 4 o 12...

Embodiment 2

[0049] A dual-function pressure sensor alumina ceramic material provided in this embodiment includes the following components by weight components:

[0050]

[0051]

[0052] Among them, CaCu 2.75 (Zr 0.5 co 0.5 ) 0.25 Ti 4 o 12 The preparation method of nano particle material comprises the following steps:

[0053] S1: Add 7.5 parts of isopropyl titanate to 22.5 parts of acrylic acid, and stir evenly at 175 rpm;

[0054] S2: To the mixed solution obtained in step S1, add CaSO with a molar ratio of Ca, Cu, Zr and Co of 1:2.75:0.125:0.125 4 2H 2 O, CuSO 4 ·5H 2 O, Zr(SO 4 ) 2 4H 2 O and Co(SO 4 ) 2 ·7H 2 O, ultrasonically oscillate at 118°C for 1.25h, and continuously add 15 parts of ammonium persulfate solution with a concentration of 6.5% dropwise during the oscillating process;

[0055] S3: Stir the mixture obtained in step S1 and the mixture obtained in step S2 at 70°C and 325rpm for 25min to obtain CaCu 2.75 (Zr 0.5 co 0.5 ) 0.25 Ti 4 o 12 Nano ...

Embodiment 3

[0064] A dual-function pressure sensor alumina ceramic material provided in this embodiment includes the following components by weight components:

[0065]

[0066]

[0067] Among them, CaCu 2 (Co 0.7 Sr 0.3 ) 1 Ti 4 o 12 The preparation method of nano particle material comprises the following steps:

[0068] S1: Add 10 parts of diisopropyl bis(acetylacetonate) titanate to 25 parts of acrylic acid, and stir evenly at 200 rpm;

[0069] S2: Add CaCl with a molar ratio of Ca, Cu, Co and Sr of 1:2:0.7:0.3 to the mixed solution obtained in step S1 2 ·6H 2 O, CuCl 2 2H 2 O, CoCl 2 ·6H 2 O and SrCl 2 ·6H 2 O, ultrasonically oscillate at 135°C for 1.5h, and continuously add 18 parts of ammonium persulfate solution with a concentration of 8% dropwise during the oscillating process;

[0070] S3: Stir the mixture obtained in step S1 and the mixture obtained in step S2 at 75°C and 300rpm to 350rpm for 30min to obtain CaCu 2 (Co 0.7 Sr 0.3 ) Ti 4 o 12 Nano precurs...

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Abstract

The invention provides a difunctional pressure sensor alumina ceramic material and a preparation method thereof, the material comprises the following components: nanoparticles with a molecular formula of CaCu3-xMxTi4O12, wherein 0 < x < = 1, and M is Ni, Zr, Co, and Sr; the glass-phase nano oxide particles with the molecular formula as A2O5, and the element A is Ta, Nb or V; single crystal diamond micro-powder; TiC; a microporous membrane polymer; a dimethyl formamide; and polyvinyl alcohol. The ceramic material is prepared, in which A2O5 glass phase nanoparticles in the outer shell are gradually increased along with the nanoparticles away from the CaCu3-xMxTi4O12 in the inner core, so that the dielectric constant is not reduced while the insulating property is improved, and the finally obtained capacitance pressure-sensitive sensor ceramic material has high dielectric constant, low dielectric loss and high insulating property.

Description

technical field [0001] The invention belongs to the technical field of sensor ceramic materials, and in particular relates to an alumina ceramic material for a dual-function pressure sensor and a preparation method thereof. Background technique [0002] Electronic components are an important basis for control systems such as electronic equipment and electronic information systems. Every upgrade of electronic system functions and every change and innovation in semiconductor technology will put forward new requirements for electronic components in terms of performance and output. With the continuous expansion of information technology application fields and the advent of the intelligent era, the development speed and technical level of electronic components have modern significance for transforming traditional industries, promoting scientific and technological progress, and improving the modernization level of equipment. The improvement of electronic components is mainly to me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/49C04B35/628C04B35/632C04B35/634C04B38/06
Inventor 方豪杰贺亦文张晓云乔冠军杨现锋方美玲
Owner HUNAN MEICHENG CERAMIC TECH
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