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A kind of preparation method of ceramic pressure sensor

A pressure sensor and ceramic technology, applied in the field of sensors, can solve problems such as easy deformation, achieve the effects of preventing deformation, shortening curing time, and improving heat resistance

Active Publication Date: 2021-05-11
SHAOXING UNIV YUANPEI COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem that the molding paste platinum printed on the ceramic substrate is easily deformed during the drying process in the prior art, and to provide a preparation method for a ceramic pressure sensor. The preparation method can realize rapid solidification of the molding paste and prevent It deforms and affects its working performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of modified phenolic resin binder:

[0027] Add phenol and o-hydroxyphenol to the reactor after preheating and melting, the molar ratio of o-hydroxyphenol and phenol is 1:8, add catalyst sodium hydroxide to the reactor, the amount of sodium hydroxide added is 3.5wt% of phenol , heat up to 82°C, add formaldehyde, the molar ratio of phenol and formaldehyde is 1:3, react for 3h; then add carboxymethyl chitosan and catalyst dicyclohexyl carbodiimide to the reaction kettle, carboxymethyl chitosan The molar ratio of sugar to o-hydroxyphenol is 1:2, the amount of dicyclohexylcarbodiimide added is 4wt% of carboxymethyl chitosan, react for 1h; then add titanium dioxide, titanium dioxide and carboxymethyl shell to the reaction kettle The mass ratio of the polysaccharide is 1:9, stirred and reacted for 40min, and the modified phenolic resin binder is obtained after cooling; wherein the titanium dioxide is pretreated, and the pretreatment method includes the following s...

Embodiment 2

[0033] Preparation of modified phenolic resin binder:

[0034] Phenol and o-hydroxyphenol are preheated and melted and then added to the reactor. The mol ratio of o-hydroxyphenol to phenol is 1:9. In the reactor, catalyst sodium hydroxide is added, and the amount of sodium hydroxide added is 4wt% of phenol. Raise the temperature to 85°C, add formaldehyde, the molar ratio of phenol and formaldehyde is 1:4, react for 3 hours; then add carboxymethyl chitosan and catalyst dicyclohexylcarbodiimide, carboxymethyl chitosan to the reaction kettle The molar ratio with o-hydroxyphenol is 1:3, the amount of dicyclohexylcarbodiimide added is 4wt% of carboxymethyl chitosan, react for 2h; then add titanium dioxide to the reaction kettle, titanium dioxide and carboxymethyl chitosan The mass ratio of sugar is 1:10, stirred and reacted for 45min, and the modified phenolic resin binder is obtained after cooling; wherein the titanium dioxide is pretreated, and the pretreatment method includes th...

Embodiment 3

[0040] Preparation of modified phenolic resin binder:

[0041] Add phenol and o-hydroxyphenol to the reactor after preheating and melting, the molar ratio of o-hydroxyphenol and phenol is 1:6, add catalyst sodium hydroxide to the reactor, the amount of sodium hydroxide added is 2.5wt% of phenol , heat up to 80°C, add formaldehyde, the molar ratio of phenol and formaldehyde is 1:2, react for 2.5h; then add carboxymethyl chitosan and catalyst dicyclohexyl carbodiimide to the reaction kettle, carboxymethyl The molar ratio of polysaccharide to o-hydroxyphenol is 1:2, the amount of dicyclohexylcarbodiimide added is 2wt% of carboxymethyl chitosan, react for 1h; then add titanium dioxide, titanium dioxide and carboxymethyl chitosan to the reaction kettle The mass ratio of chitosan is 1:9, stirred and reacted for 35min, and obtained modified phenolic resin binder after cooling; wherein titanium dioxide is through pretreatment, and pretreatment method comprises the following steps: in ...

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PUM

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Abstract

The invention relates to the technical field of sensors, and discloses a preparation method of a ceramic pressure sensor. The preparation method is as follows: 1) choose alumina ceramics as the base, clean it and dry it, print silver palladium conductor paste on the elastic diaphragm of the ceramic base, let it stand at room temperature, and then dry it. Carry out one sintering in a high-temperature furnace, and cool to room temperature after sintering is completed; 2) Print the thick film paste on the surface of the alumina ceramic substrate by screen printing at the designated position of the alumina ceramic base; 3) Print the The alumina ceramics of the thick film slurry is dried under an infrared lamp as a substrate, and then placed in a high-temperature furnace for secondary sintering and cooled to obtain the finished product. The invention greatly shortens the curing time of the resistance slurry, and the resistance slurry on the ceramic substrate does not deform during the curing process.

Description

technical field [0001] The invention relates to the technical field of sensors, in particular to a preparation method of a ceramic pressure sensor. Background technique [0002] Sensor technology is one of the high and new technologies that are developing rapidly, and it is also an important symbol of the development of contemporary science and technology. As the tentacles of human beings to detect external information, sensor technology refers to the technology of collecting various forms of information with high precision, high efficiency and high reliability. It converts non-electrical information into easy-to-handle electrical information, and further understands and transforms the world for people. , creating the necessary conditions and providing new methods. The three foundations of modern information technology are information pickup, information transmission and information processing, that is, sensor technology, communication technology and computer technology. Se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L1/22G01L9/00C04B41/50C04B41/85C08G8/28
CPCC04B41/5072C04B41/85C08G8/28G01L1/22G01L9/006C04B41/5022C04B41/4811C04B41/463
Inventor 徐志望
Owner SHAOXING UNIV YUANPEI COLLEGE