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Fiber web for gas sensor, manufacturing method thereof, and gas sensor including same

一种气体传感器、制造方法的技术，应用在纤维网领域，能够解决难以应用等问题，达到防止检测性能的变化、提高灵敏度、优秀纺丝性的效果

Active Publication Date: 2022-04-15
AMOGREENTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] On the other hand, in order to sense low-concentration target substances, it is necessary to use semiconductor oxide sensors and electrochemical sensors, but it is difficult to apply them to all fields of industry in terms of sensor life and price.

Method used

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  • Fiber web for gas sensor, manufacturing method thereof, and gas sensor including same
  • Fiber web for gas sensor, manufacturing method thereof, and gas sensor including same
  • Fiber web for gas sensor, manufacturing method thereof, and gas sensor including same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] First, 180 g of dimethylacetamide (DMAC) as a solvent and 32 g of polyvinylidene fluoride (Arkema, Kynar 761) as a fiber-forming component were dissolved at 80°C for 6 hours using a magnetic bar. , a fiber-forming component solution was prepared.

[0086] Then, in order to prepare the dispersion liquid that comprises sensory component, after preparing dimethylacetamide (DMAC) 60g as dispersion medium, in it, mix lead acetate trihydrate (Sigma Aldrich (Sigmaaldrich (Sigmaaldrich) company, weight average molecular weight 379.33) 96g, At a temperature of 80°C, using a magnetic rod for 1 hour, a dispersion liquid in which lead acetate trihydrate was melt-dispersed in a dispersion medium was prepared. Then, after mixing the fiber-forming component solution and the dispersion liquid, the fiber-forming component solution and the dispersion liquid were mixed using a bar magnet at a temperature of 60° C. for 2 hours.

[0087] Centrifuge the prepared mixed solution at 3000 rpm f...

Embodiment 2

[0089] Preparation was carried out in the same manner as in Example 1, but the mixed solution was used as a spinning solution without centrifuging, and fiber webs for gas sensors shown in Table 1 below were produced.

[0090] The basis weight of the manufactured fiber web is 30g / ㎡, the average diameter of the nanofibers is 250nm, the porosity is 65%, and the nanofibers include parts whose diameter is 1.5 times or more than the average diameter.

Embodiment 3

[0092] The preparation was carried out in the same manner as in Example 1, but the lead acetate trihydrate was dry-milled instead of preparing the dispersion, and the pulverized lead acetate trihydrate was mixed in the prepared fiber-forming component solution, so that the spinning solution similar to that of Example 1 was obtained. The same content was then mixed using a magnetic bar at 25° C. during 2 hours to prepare a spinning solution, which was used to manufacture fiber webs for gas sensors shown in Table 1 below.

[0093] The basis weight of the manufactured fiber web was 20 g / ㎡, the average diameter of the nanofibers was 400 nm, the porosity was 43%, and the nanofibers contained parts whose diameter was 1.5 times or more than the average diameter.

[0094]

[0095] Using the fiber-forming component solution of Example 1 as the spinning solution, spinning under the same conditions produced a PVDF fiber web with a basis weight of 28 g / ㎡, an average diameter of nanofiber...

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Abstract

Provided is a fiber web for a gas sensor. A fiber web for a gas sensor according to an embodiment of the present invention is embodied by including nanofibers including a fiber-forming component and a sensing component that reacts with a target substance in a test gas. Accordingly, the fiber web for gas sensors can identify the presence or absence of the target substance contained in the test gas, quantitatively detect the concentration of the target substance, increase the contact and reaction area for the target substance contained in the test gas, and exhibit improved sensitivity . In addition, the detection of target substances in the tested gas is carried out easily and at a low cost, so that it can be widely used in the detection of various VOC substances in the family and the diagnosis and identification of patients with asthma and esophagitis, or the detection of harmful substances in other industrial safety fields .

Description

technical field [0001] The present invention relates to a fiber web, and more specifically, to a fiber for a gas sensor capable of identifying the presence or absence of a target substance contained in a test gas and quantitatively detecting the concentration of the target substance, and having excellent spinnability and mechanical strength Mesh, its manufacturing method, and gas sensor including the same. Background technique [0002] For a general gas sensor equipped with a substance capable of sensing a target substance contained in a test gas, the sensing substance is coated in a powder form or formed into a thin or thick film to form a sensing layer. When the sensing substance is formed into a powder form or a thin film / thick film form, the reactivity to the target substance at a low concentration of 1ppm or less contained in the test gas is low, and its use in industrial fields requiring high sensitivity sensing performance is limited. Therefore, it is generally used ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78D04H1/42D04H13/00
CPCG01N21/783D04H1/728D04H1/42D04H13/00D04H1/724
Inventor 尹永友
Owner AMOGREENTECH CO LTD
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