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A processing technology of humidity sensor

A technology of humidity sensor and processing technology, applied in the direction of material electrochemical variables, etc., can solve the problems of complex process, poor quality assurance, non-recyclable, etc., achieve simple and scientific preparation process, avoid inaccurate alignment, and facilitate industrial production Effect

Active Publication Date: 2021-01-22
柳州国福科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Thermoplastic materials are easy to form, simple molds, low cost, recyclable, and environmentally friendly, but they are not heat-resistant, wear-resistant,
[0005] Not flame retardant; thermosetting materials are just the opposite of thermoplastic materials, difficult to form, complex molds, high cost, non-recyclable, not environmentally friendly, but high temperature resistant, wear-resistant, flame retardant, and corrosion resistant
At present, the widely used sensors need to be sealed and packaged to achieve the purpose of protection and shaping. Ordinary sensors are molded by glue filling process, or a single thermoplastic material. The glue filling process is prone to residual air bubbles and cracks. , and the cost is high, the process is complicated, and the quality is not guaranteed; while the use of a single thermoplastic material often has different defects of the material itself, there are many molds, and the cost is high
At the same time, the sensor production process needs to go through a pressure welding process, which needs to be carried out in a high temperature environment of 220 ° C. The resin frame will expand due to high temperature, resulting in inaccurate alignment and affecting the quality of the ultrasonic sensor.

Method used

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Examples

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Effect test

Embodiment 1

[0019] A processing technology for a humidity sensor, comprising the following steps:

[0020] (1) Sintering multiple ceramic pillars into a dense body;

[0021] (2) After cleaning and drying the outer surfaces of the above-mentioned sintered multiple ceramic columns, use 20-mesh corundum sand grains for sandblasting to obtain a rough surface;

[0022] (3) Spraying an alumina insulating coating on the surfaces of the above-mentioned sandblasting-treated ceramic columns and drying them to form the first insulating layer;

[0023] (4) Print the conductive paste mainly composed of platinum, copper, and zinc on the surface of the ceramic column treated in the above step (3) to form an electrode layer;

[0024] (5) Spray the alumina insulating coating on the surface of the ceramic column treated in the above step (4), and dry it to form the second insulating layer;

[0025] (6) Spray an alumina insulating coating on the surfaces of the multiple ceramic columns treated in the abov...

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Abstract

The invention discloses a humidity sensor processing technology which includes the steps: (1) sintering a plurality of ceramic columns into compact bodies; (2) cleaning and drying outer surfaces of aplurality of sintered ceramic columns, and performing sand blasting on the surfaces of the ceramic columns by the aid of 20-mesh corundum sand to obtain rough surfaces; (3) spraying aluminum oxide insulating coatings on the surfaces of the ceramic columns after sand blasting, and drying the insulating coatings to obtain first insulating layers; (4) printing the surfaces of the ceramic columns treated in the step (3) with electric conduction slurry mainly formed by platinum, copper and zinc to form electrode layers and the like. The processing technology is simple and scientific. According to apreparation method, hot pressing is omitted in a manufacture procedure, splintering before sintering and deforming and warping in the sintering process can be greatly decreased, resin cannot be vitrified or exceedingly expanded in the environments of high temperature of 200 DEG C or more, so that inaccurate alignment caused by deformation of a sensor is avoided, the quality of the sensor is improved, and production cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of sensor processing, in particular to a processing technology of a humidity sensor. Background technique [0002] Sensors have already penetrated into a wide range of fields such as industrial production, space development, ocean exploration, environmental protection, resource investigation, medical diagnosis, bioengineering, and even cultural relic protection. It is no exaggeration to say that from the vast space, to the vast ocean, to various complex engineering systems, almost every modern project is inseparable from various sensors. It can be seen that the important role of sensor technology in developing economy and promoting social progress is very obvious. All countries in the world attach great importance to the development of this field. It is believed that in the near future, sensor technology will make a leap and reach a new level commensurate with its important status. [0003] The characteri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/26C04B41/90
CPCC04B41/52C04B41/90G01N27/26C04B41/5031C04B41/51C04B41/524C04B41/5122
Inventor 毛永艳
Owner 柳州国福科技有限公司
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