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Pressure sensor ceramic material and preparation method thereof

A technology of pressure sensors and ceramic materials, applied in chemical instruments and methods, fluid pressure measurement using capacitance changes, instruments, etc., can solve problems such as unsatisfactory, hidden fire safety, low thermal expansion coefficient, etc.

Inactive Publication Date: 2021-05-18
HUNAN MEICHENG CERAMIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Traditional materials are difficult to meet the requirements, and the development and effective use of high-performance materials has become an inevitable trend in the development of material science
However, the ceramic materials in the prior art have a low coefficient of thermal expansion, resulting in low heat dissipation capacity, which is easy to cause fire safety hazards, and does not meet the requirements of chip-type and miniaturized sensor electronic sensor ceramic materials in the existing market.

Method used

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  • Pressure sensor ceramic material and preparation method thereof
  • Pressure sensor ceramic material and preparation method thereof
  • Pressure sensor ceramic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A pressure sensor ceramic material provided in this embodiment, by weight components, includes the following components

[0036]

[0037] Among them, CaCu 2 (Ni 0.6 co 0.4 ) Ti 3.8 sc 0.2 o 12 The preparation method of nano particle material comprises the following steps:

[0038] S1: Ca(CH 3 COO) 2 ·H 2 O, Cu(CH 3 COO) 2 ·H 2 O, Ni(CH 3 COO) 2 4H 2 O and Co(CH 3 COO) 2 4H 2 O is dissolved in ethanol according to the molar ratio of 1:2:0.6:0.4 to form the first mixed precursor solution;

[0039] S2: Tetrabutyl orthotitanate, Sc(CH 3 COO) 3 ·5H 2 O is dissolved in acetylacetone according to the molar ratio of 3.8:0.2 to form the second mixed precursor solution;

[0040] S3: Stir the first mixed precursor solution obtained in the S1 step and the second mixed precursor solution obtained in the S2 step at 95°C and 200 rpm for 15 minutes, and add dropwise a volume fraction of 20% during the stirring process. ethanol solution, forming CaCu 2 (Ni 0.6...

Embodiment 2

[0050] This embodiment provides a pressure sensor ceramic material, which includes the following components by weight

[0051]

[0052] Among them, CaCu 2.5 Zr 0.5 Ti 3.5 sc 0.5 o 12 The preparation method of nano particle material comprises the following steps:

[0053] S1: CaSO 4 2H 2 O, CuSO 4 ·5H 2 O, Zr(SO 4 ) 2 4H 2 O is dissolved in ethanol according to the molar ratio of 1:2.5:0.5 to form the first mixed precursor solution;

[0054] S2: Tetraisopropylbis(dioctylphosphite acyloxy) titanate, Sc 2 (SO 4 ) 3 ·8H 2 O is dissolved in acetylacetone according to the molar ratio of 7:1 to form the second mixed precursor solution;

[0055] S3: Stir the first mixed precursor solution obtained in step S1 and the second mixed precursor solution obtained in step S2 at 105°C and 300 rpm for 15 minutes, and add dropwise an ethanol solution with a fraction of 40% during the stirring process to form CaCu 2.5 Zr 0.5 Ti 3.5 sc 0.5 o 12 Nano precursor gel;

[0056...

Embodiment 3

[0066] A pressure sensor ceramic material provided in this embodiment, by weight components, includes the following components

[0067]

[0068] Among them, CaCu 2.9 Sr 0.1 Ti 3.2 sc 0.8 o 12 The preparation method of nano particle material comprises the following steps:

[0069] S1: add CaCl 2 ·6H 2 O, CuCl 2 2H 2 O and SrCl 2 ·6H 2 O is dissolved in ethanol according to the molar ratio of 1:2.9:0.1 to form the first mixed precursor solution;

[0070] S2: diisopropyl di(acetylacetonate) titanate, ScCl 3 ·6H 2 O is dissolved in acetylacetone according to the molar ratio of 4:1 to form the second mixed precursor solution;

[0071] S3: Stir the first mixed precursor solution obtained in step S1 and the second mixed precursor solution obtained in step S2 at 100°C and 250 rpm for 15 minutes, and add ethanol solution dropwise during the stirring process to form CaCu 2.9 Sr 0.1 Ti 3.2 sc 0.8 o 12 Nano precursor gel;

[0072] S4: the CaCu obtained in step S3 2....

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Abstract

The invention provides a pressure sensor ceramic material and a preparation method thereof, the pressure sensor ceramic material comprises the following components: nano ceramic particles with a molecular formula of CaCu3-xMxTi4-yScyO12, wherein 0 < x < = 1, 0.2 < = y < = 0.8; glass-phase nano-oxide particles with the molecular formula being B2O3; AlN; BeO; a polymethylformamide; polycrystalline diamond micro powder; a microfiltration membrane polymer; and dimethyl formamide. According to the preparation method disclosed by the invention, by preparing the diamond micro powder plated with the AlN and BeO submicron layer with the thickness of 10-20 mu m, the defects of uniform crystal structure and isotropy caused by gradient modification of CaCu3-xMxTi4-yScyO12 by the B2O3 glass phase nanoparticles are reduced, so that the stress concentration of the finally prepared ceramic material against impact is effectively reduced, and the impact resistance of the ceramic material is improved. Thus, the defect that the section combination degree is reduced due to grain boundary movement is avoided.

Description

technical field [0001] The invention belongs to the technical field of sensor ceramics, and in particular relates to a pressure sensor ceramic material and a preparation method. Background technique [0002] Materials are the material basis of human production and life, and a symbol of human progress and civilization. With the emergence and development of new technologies such as space technology, optoelectronic technology, infrared technology, sensor technology, and energy technology, materials must have superior properties such as high temperature resistance, corrosion resistance, and wear resistance before they can be used in harsh environments. . Traditional materials are difficult to meet the requirements, and the development and effective utilization of high-performance materials has become an inevitable trend in the development of materials science. However, the ceramic materials in the prior art have a low coefficient of thermal expansion, resulting in a low heat d...

Claims

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Application Information

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IPC IPC(8): C04B35/462C04B35/622C04B35/626G01L1/14G01L9/12
CPCC04B35/462C04B35/622C04B35/62605G01L1/142G01L9/12C04B2235/3208C04B2235/3281C04B2235/3213C04B2235/3224C04B2235/3241C04B2235/3865C04B2235/3205C04B2235/427C04B2235/5436C04B2235/5454C04B2235/449C04B2235/3279C04B2235/3275C04B2235/3232C04B2235/441C04B35/62675C04B35/49C04B2235/448C04B35/62655C04B2235/444C01G23/002C01P2006/32C01P2006/14C04B35/626G01L1/14
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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