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Pressure sensitive element for low temperature-resistant pressure transmitters, and preparation method thereof

A technology for pressure sensitive components and transmitters, which is applied in the field of pressure sensitive components for low temperature resistant pressure transmitters and its preparation. It can solve problems such as material performance imbalance and affecting the accuracy of the transmitter, so as to enhance toughness and improve products. Stability, cold resistance improvement effect

Inactive Publication Date: 2019-09-06
安徽英泰利科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The components used to sense pressure inside the pressure transmitter are mainly piezoresistive components, but due to the influence of the material, it is easy to unbalance the material performance in the temperature change, especially in the low temperature environment, which will easily affect the accuracy of the transmitter, so the improvement The low temperature resistance of pressure sensitive components is a major research direction in the pressure transmitter industry at this stage

Method used

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  • Pressure sensitive element for low temperature-resistant pressure transmitters, and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0026] A pressure-sensitive element for a low-temperature resistant pressure transmitter, the pressure-sensitive element is made of the following raw materials in parts by weight: 90 parts of zinc oxide, 16 parts of strontium titanate, 4 parts of gallium arsenide, 8 parts of calcium titanate, 2 parts of antimony, 0.8 parts of magnesium oxide, 4 parts of cobalt tetroxide, 2 parts of bismuth oxide, 6 parts of ytterbium oxide, 4 parts of gallium arsenide, 1 part of nickel oxide, 2 parts of polyurethane resin, 4 parts of polyacrylate, and 1 part of dispersant.

[0027] The dispersant is a mixture of sodium tripolyphosphate and sodium hexametaphosphate.

[0028] The preparation method of the pressure sensitive element comprises the following steps:

[0029] (1) Mix zinc oxide, strontium titanate, gallium arsenide, calcium titanate, antimony oxide, and gallium arsenide and calcinate at high temperature for a period of time, and then pulverize them in a ball mill to obtain a mixture ...

Embodiment 2

[0037] A pressure-sensitive element for a low-temperature resistant pressure transmitter, the pressure-sensitive element is made of the following raw materials in parts by weight: 110 parts of zinc oxide, 18 parts of strontium titanate, 6 parts of gallium arsenide, 10 parts of calcium titanate, 3 parts of antimony, 1.6 parts of magnesium oxide, 6 parts of tricobalt tetroxide, 3 parts of bismuth oxide, 8 parts of ytterbium oxide, 5 parts of gallium arsenide, 2 parts of nickel oxide, 3 parts of polyurethane resin, 6 parts of polyacrylate, 2 parts of dispersant.

[0038] The dispersant is a mixture of sodium hexametaphosphate and aluminum tripolyphosphate.

[0039] The preparation method of the pressure sensitive element comprises the following steps:

[0040] (1) Mix zinc oxide, strontium titanate, gallium arsenide, calcium titanate, antimony oxide, and gallium arsenide and calcinate at high temperature for a period of time, and then pulverize them in a ball mill to obtain a mix...

Embodiment 3

[0048] A pressure sensitive element for a low temperature resistant pressure transmitter, the pressure sensitive element is made of the following raw materials in parts by weight: 100 parts of zinc oxide, 17 parts of strontium titanate, 5 parts of gallium arsenide, 9 parts of calcium titanate, 2.5 parts of antimony, 1.2 parts of magnesium oxide, 5 parts of tricobalt tetroxide, 2.5 parts of bismuth oxide, 7 parts of ytterbium oxide, 4.5 parts of gallium arsenide, 1.5 parts of nickel oxide, 2.5 parts of polyurethane resin, 5 parts of polyacrylate, and 1.5 parts of dispersant.

[0049] The dispersant is sodium tripolyphosphate.

[0050] The preparation method of the pressure sensitive element comprises the following steps:

[0051] (1) Mix zinc oxide, strontium titanate, gallium arsenide, calcium titanate, antimony oxide, and gallium arsenide and calcinate at high temperature for a period of time, and then pulverize them in a ball mill to obtain a mixture for later use;

[0052]...

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Abstract

The invention provides a pressure sensitive element for low temperature-resistant pressure transmitters, and a preparation method thereof, and relates to the technical field of pressure transmitter processing. The pressure sensitive element is made from, by weight, 90-110 parts of zinc oxide, 16-18 parts of strontium titanate, 4-6 parts of gallium arsenide, 8-10 parts of calcium titanate, 2-3 parts of antimony oxide, 0.8-1.6 parts of magnesium oxide, 4-6 parts of cobaltosic oxide, 2-3 parts of bismuth oxide, 6-8 parts of ytterbium oxide, 4-5 parts of gallium arsenide, 1-2 parts of nickel oxide, 2-3 parts of polyurethane resin, 4-6 parts of polyacrylate and 1-2 parts of a dispersant. The preparation method overcomes the deficiencies of the prior art, can improve the low-temperature stability of the product by mixing the multiple raw materials and pressing twice for forming a film without affecting the electrical performances of the pressure-sensitive element, so the low temperature stability is improved, and the product and the method are suitable for promotion and use.

Description

technical field [0001] The invention relates to the technical field of pressure transmitter processing, in particular to a pressure sensitive element for a low temperature resistant pressure transmitter and a preparation method thereof. Background technique [0002] A pressure transmitter is a device that converts pressure into a pneumatic signal or an electric signal for control and remote transmission. It can convert physical pressure parameters such as gas and liquid felt by the load cell sensor into a standard electrical signal for supply Indicator alarm, recorder, regulator and other secondary instruments for measurement, indication and process adjustment; pressure transmitter is the most commonly used sensor in industrial practice, which is widely used in various industrial automatic control environments, involving water conservancy, hydropower, Railway transportation, intelligent building, automatic production control, aerospace, military industry, petrochemical, oil ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/453C04B35/622C04B35/626H01C7/112H01C17/00H01C17/065H01C17/28H01C17/30
CPCC04B35/453C04B35/62218C04B35/62605C04B2235/3206C04B2235/3224C04B2235/3236C04B2235/3277C04B2235/3279C04B2235/3294C04B2235/3298C04B2235/44C04B2235/6565C04B2235/6567H01C7/112H01C17/006H01C17/06533H01C17/06546H01C17/28H01C17/30
Inventor 董满勇
Owner 安徽英泰利科技有限公司