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Preparation method of gas sensor array for detecting medicinal-flavor liquor

A gas-sensing sensor and medicinal-flavor technology, which is applied in the field of gas-sensing sensors, can solve the problems of low organic gas sensitivity, increased sensor volume, low integration, etc., and achieves the effects of low cost, small impact and good repeatability.

Inactive Publication Date: 2013-12-04
中安高科检测科技(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of gas sensor needs to be heated to about 300°C to ensure the smooth progress of the redox reaction, so it has the following disadvantages: 1. It needs a heating temperature control device, which increases the volume, power consumption and complexity of the sensor, and is inconvenient to use the current micro Electronic process production; 2. The integration level is not high; 3. The sensitivity to most organic gases with weak redox properties is not high

Method used

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  • Preparation method of gas sensor array for detecting medicinal-flavor liquor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1. Sodium polyacrylate used in the experiment was purchased from Aladdin Reagent Co., Ltd., with a molecular weight of 4 million; water was secondary deionized water; polytrimethylsilyl-1-propyne was purchased from Aladdin Reagent Co., Ltd., with a molecular weight of 500,000 ; Ethanol was purchased from Aladdin Reagent Co., Ltd., which is an AR grade pure reagent; polyvinyl alcohol was purchased from Bailingwei Reagent Co., Ltd., with a molecular weight of 20,000; n-propanol was purchased from Bailingwei Reagent Co., Ltd., with a purity of 98%; nylon-66 was purchased from Alpha Aisha Reagent Co., Ltd., the molecular weight is about 27000; butyric acid was purchased from Alpha Aisha Reagent Co., Ltd., with a purity of 99%; nitrocellulose was purchased from Bailingwei Reagent Co., Ltd.; ethyl butyrate was purchased from Bailingwei Reagent Co., Ltd. , with a purity of 99%.

[0019] 2. On the UNIVEX-300 vacuum coating machine, sodium polyacrylate, polytrimethylsilyl-1-prop...

Embodiment 2

[0033] 1. The reagents and polymer used are the same as those in Example 1.

[0034] 2. On the UNIVEX-300 vacuum coating machine, sodium polyacrylate, polytrimethylsilyl-1-propyne, polyvinyl alcohol, nylon-66, and nitrocellulose were vapor-deposited on a film with a diameter of 10mm and a thickness of 0.8mm. On a circular quartz substrate, the specific steps are as follows:

[0035] (1) Select a suitable substrate holder and place the quartz substrate and polyvinyl alcohol;

[0036] (2) Check the status of circulating cooling water, compressed air and high-purity nitrogen, and check the oil level of the mechanical pump and outlet oil mist filter;

[0037] (3) Turn the main power knob to the vertical position. After the self-test of the instrument is normal, close the bell cover, and pay attention to the position of the connecting rod on the left;

[0038] (4) Pass F 1 and F 5 Switch the display screen to the air extraction interface, start air extraction, and prohibit powe...

Embodiment 3

[0048] 1. The reagents and polymer used are the same as those in Example 1.

[0049] 2. Sodium polyacrylate, polytrimethylsilyl-1-propyne, polyvinyl alcohol, nylon-66, and nitrocellulose were vapor-deposited on the UNIVEX-300 vacuum coating machine at length × width = 10 × 10mm, thickness On a square quartz substrate of 1 mm, the specific steps are as follows:

[0050] (1) Select a suitable substrate holder and place the quartz substrate and polyvinyl alcohol;

[0051] (2) Check the status of circulating cooling water, compressed air and high-purity nitrogen, and check the oil level of the mechanical pump and outlet oil mist filter;

[0052] (3) Turn the main power knob to the vertical position. After the self-test of the instrument is normal, close the bell cover, and pay attention to the position of the connecting rod on the left;

[0053] (4) Pass F 1 and F 5 Switch the display screen to the air extraction interface, start air extraction, and prohibit power failure afte...

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Abstract

The invention provides a preparation method of a gas sensor array for detecting medicinal-flavor liquor. The method includes (1) evaporating sodium polypropylene, polyethylene trimethylsilyl-1-propyne, polystyrene, nylon-66 and nitrocellulose on different quartz substrates by a vacuum coating machine; (2) welding evaporated quartz substrates on a circuit board. The gas sensor array prepared by the method is small in size, low in cost, good in repeatability, small in affection produced by coexisting gases and high in resolution performance for gas mixture, and is capable of being operated for long time; an electronic nose system produced by combining the gas sensor array with a piezoelectric system is used, a pre-treatment process with tedious samples is omitted during detection of authenticity of the medicinal-flavor liquor, the detection can be performed directly, response speed is high, and accuracy is good.

Description

technical field [0001] The invention belongs to the technical field of gas sensors, and in particular relates to a method for preparing a gas sensor array for detecting medicinal-flavor liquor. Background technique [0002] At present, food safety is already a global issue, especially in the liquor industry that is closely related to the lives of the masses, there are problems such as low quality and safety control, insufficient rapid detection capabilities, and backward related technologies and equipment. How to identify the quality of liquor has become a major issue in the food market. Key points and difficulties of management. In the 1990s, a new device-electronic nose (also known as an odor scanner) that simulates the biological olfactory system by combining gas sensors and pattern recognition technology to realize the detection and identification of volatile substances appeared. Its core component is a gas sensor, which has the advantages of being objective, fast and r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/02
Inventor 谷宇武力韩健梁星
Owner 中安高科检测科技(北京)有限公司
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