Conductive polymer composite nanofiber resistive-type humidity sensor and preparation method thereof

A composite nanofiber, humidity sensor technology, applied in the direction of material resistance, etc., to achieve the effect of speeding up the response, reducing contact resistance, and small hysteresis

Inactive Publication Date: 2012-06-20
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have many limitations or disadvantages, and cannot solve the problem of contact between nanofibers and substrates well. It is necessary to establish a universal method.

Method used

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  • Conductive polymer composite nanofiber resistive-type humidity sensor and preparation method thereof
  • Conductive polymer composite nanofiber resistive-type humidity sensor and preparation method thereof
  • Conductive polymer composite nanofiber resistive-type humidity sensor and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A method for manufacturing a conductive polymer composite nanofiber resistance type humidity sensor, comprising the following steps:

[0032] 1) Clean the surface photolithography and evaporate the ceramic substrate with interdigitated gold electrodes, and dry it for later use;

[0033] 2) Prepare the N,N-dimethylformamide solution of polyaniline, polyethylene oxide, and polyvinyl butyral doped with polystyrenesulfonic acid, in which the concentration of polyaniline is 10 mg / mL, polyethylene oxide The concentration is 20 mg / mL, the concentration of polyvinyl butyral is 50 mg / mL, and the molar ratio of styrene sulfonic acid to aniline in polystyrene sulfonic acid-doped polyaniline is 1: 1;

[0034] 3) Put the solution prepared in step 2) into a syringe with a needle, the injection needle is connected to the anode of the high voltage power supply, the cathode of the high voltage power supply is connected to the copper plate, and the copper plate is placed on the ceramic s...

Embodiment 2

[0037] A method for manufacturing a conductive polymer composite nanofiber resistance type humidity sensor, comprising the following steps:

[0038] 1) Clean the surface photolithography and evaporate the ceramic substrate with interdigitated gold electrodes, and dry it for later use;

[0039] 2) Prepare N,N-dimethylformamide solution of polyaniline, polyethylene oxide and polyvinyl butyral doped with polystyrene sulfonic acid, wherein the concentration of polyaniline is 20 mg / mL, polyethylene oxide The concentration is 3 mg / mL, the concentration of polyvinyl butyral is 20 mg / mL, and the molar ratio of styrene sulfonic acid to aniline in polystyrene sulfonic acid-doped polyaniline is 3: 1;

[0040] 3) Put the solution prepared in step 2) into a syringe with a needle, the injection needle is connected to the anode of the high voltage power supply, the cathode of the high voltage power supply is connected to the copper plate, and the copper plate is placed on the ceramic substra...

Embodiment 3

[0043] A method for manufacturing a conductive polymer composite nanofiber resistance type humidity sensor, comprising the following steps:

[0044] 1) Clean the surface photolithography and evaporate the ceramic substrate with interdigitated gold electrodes, and dry it for later use;

[0045] 2) Prepare a N,N-dimethylformamide solution of polystyrenesulfonic acid-doped polyaniline (polyethylene oxide and polyvinyl butyral, in which the concentration of polyaniline is 40 mg / mL, polyoxy The concentration of ethylene is 10 mg / mL, the concentration of polyvinyl butyral is 30 mg / mL, and the molar ratio of styrene sulfonic acid to aniline in polystyrene sulfonic acid-doped polyaniline is 6: 1;

[0046] 3) Put the solution prepared in step 2) into a syringe with a needle, the injection needle is connected to the anode of the high voltage power supply, the cathode of the high voltage power supply is connected to the copper plate, and the copper plate is placed on the ceramic substrat...

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Abstract

The invention discloses a condutcive polymer composite nanofiber resistive-type humidity sensor, which has a ceramic matrix. The surface of the ceramic matrix is provided with a plurality of pairs of crossed-finger gold electrodes through photoetching and evaporation; the crossed-finger gold electrodes are connected with leads; and the surfaces of the ceramic matrix and the crossed-finger gold electrodes are deposited with a humidity sensitive nanofiber film which is a complex prepared from polystyrolsulfon acid doped polyaniline, polyoxyethylene and polyvinyl butyral in a mass ratio of (10-40):(3-20):(20-50). An electrostatic spinning method is adopted for preparing the conductive polymer composite nanofiber resistive-type humidity sensor, and is simple and feasible. The conductive polymer composite nanofiber resistive-type humidity sensor has high response speed, small hysteresis and high sensitivity, and can be widely applied to detection and control of environment humidity in industrial and agricultural production, storage, weather and daily life.

Description

technical field [0001] The invention relates to a conductive polymer composite nanofiber humidity sensor and a manufacturing method thereof. Background technique [0002] The research and application of chemical sensors is an important field in the development of science and technology in today's society. It plays a very important role in the detection and regulation of modern industrial and agricultural production and people's living environment. Humidity sensor, as a kind of important chemical sensor, has also received more and more attention and attention, and its development is very rapid at present. Among many humidity materials, research on polymer sensitive materials is very active, and a variety of polymer humidity sensors have been commercialized. However, it also has disadvantages such as low response sensitivity, slow response time, large hysteresis, and poor response reproducibility, which hinder its research and wide application. [0003] One of the effective ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/04
Inventor 李扬杨慕杰林乾乾
Owner ZHEJIANG UNIV
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