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Oxide tape-casting slurry-based oxygen sensor for vehicle and manufacture method of sensor

A technology of a vehicle oxygen sensor and a manufacturing method, applied in the field of sensors, can solve the problems of human health hazards, easily polluting the environment, affecting the sensitivity of sensors, etc.

Active Publication Date: 2014-05-07
莱鼎电子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing sheet-type oxygen sensor is mainly prepared by casting the butanone and xylene system to obtain the cast sheet, and the air channel cavity is filled with organic matter such as carbon powder or starch, and the air channel body is obtained after firing, but there will be residues Existence affects the sensitivity of the sensor. At the same time, most of the organic solvents used in the sensor manufacturing process are toxic solvents such as butanone and xylene, which are easy to pollute the environment and cause harm to human health.

Method used

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  • Oxide tape-casting slurry-based oxygen sensor for vehicle and manufacture method of sensor

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Embodiment 1

[0032] In this embodiment, the casting slurry includes the following materials in parts by weight: 6 parts of zirconia powder, 4 parts of organic solvent, 1 part of auxiliary agent, and the particle size of zirconia powder is <1um, wherein,

[0033] The organic solvent includes the following parts by weight: 7 parts of pure hexyl acetate and / or propyl acetate for analysis, 3 parts of pure ethanol and / or isobutanol for analysis, and the organic solvent in the present invention adopts nontoxic hexyl acetate And / or propyl acetate and ethanol and / or isobutanol, it has avoided the pollution to environment and the harm to human health compared with the mode that adopts toxic solvents such as butanone, xylene in the prior art;

[0034] The auxiliary agent includes the following substances by weight: 1 part of dispersant, 7 parts of binder and 1 part of plasticizer.

[0035] Among them, the casting aid uses PVB imported from the United States as a binder, and its glass transition temp...

Embodiment 2

[0037] In this embodiment, the insulating paste includes the following substances by weight: 5 parts of inorganic powder, 3 parts of organic vehicle, and 2 parts of additives, wherein,

[0038] The inorganic powder includes the following materials in parts by weight: 20 parts of alumina, 1 part of zirconia, wherein the alumina is a mixture of 6 parts of α-phase low-temperature sintered alumina and 14 parts of γ-phase alumina with a particle size of <15nm;

[0039] The organic carrier is a mixed solution after water bath treatment, and the organic carrier includes the following substances in parts by weight: 25 parts of terpineol, 1 part of ethyl cellulose;

[0040] The auxiliary agent includes the following substances by weight: 6 parts of dispersant, 3 parts of binder, 3 parts of leveling agent and 1 part of thixotropic agent.

Embodiment 3

[0042] In this embodiment, the protective slurry includes the following parts by weight: 4 parts of oxide, 2 parts of pore-forming agent, 2 parts of organic vehicle, and 1 part of auxiliary agent, wherein,

[0043] The oxides include one or more of the following materials in parts by weight: 20 parts of aluminum oxide, 1 part of zirconia, 1 part of magnesium oxide, and 1 part of silicon oxide;

[0044] The pore-forming agent is nano-carbon powder with a particle size range of 0.1um-1um;

[0045] The organic carrier includes the following materials in parts by weight: 58 parts of terpineol, 25 parts of ethyl cellulose, and 2 parts of ethanol;

[0046] The auxiliary agent includes the following substances by weight: 6 parts of binder, 3 parts of dispersant, 3 parts of plasticizer, and 1 part of leveling agent.

[0047] About the manufacture method of this vehicle oxygen sensor, the present invention proposes following embodiment:

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Abstract

The invention discloses an oxide tape-casting slurry-based oxygen sensor for a vehicle. According to the sensor, a sensitive layer matrix, an air channel layer, an air channel support body and a heating layer matrix are made of tape-casting slurry, and the tape-casting slurry comprises the following materials in parts by weight: 5-7 parts of zirconium oxide powder body, 3-5 parts of organic solvent and 0.5-1.5 parts of assistant. All layers of matrixes of the oxygen sensor for the vehicle are made of zirconium oxide materials, and are good in sintering combination degree in a sintering process, especially the air channel layer, organic matters of carbon powder, starch and the like need not to be filled in an air channel, and thus the sensitivity of the sensor because residues exist in the air channel are avoided.

Description

technical field [0001] The invention relates to sensors, in particular to an oxygen sensor for vehicles based on oxide casting slurry and a manufacturing method thereof. Background technique [0002] In recent years, with the development of the automobile market, it has become a trend for automobiles to enter every household, but automobile exhaust has become one of the main sources of air pollution, especially in early 2013, when the Beijing area encountered many days of smog and haze, PM2 .5 Exceeding the standard by as much as three times, the quality of life of the people has been greatly threatened. Foggy weather can cause rhinitis, bronchitis, and long-term exposure to this environment can also induce lung cancer. On January 1, 2013, my country has fully launched the National IV emission standard to control the pollution of automobile exhaust to the atmosphere, and the vehicle oxygen sensor is the only sensing element that detects exhaust gas. The existing sheet-type ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/00
Inventor 江澍黄海琴
Owner 莱鼎电子材料科技有限公司
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