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Solvent water detection element based on conductive macromolecular compound and manufacturing method thereof

A technology of conductive polymer and solvent moisture, applied in the direction of material resistance, etc., can solve the problems of inappropriate determination of moisture content, difficulty in popularization, high price, and improve long-term stability and response reproducibility, easy measurement, and water absorption. reduced effect

Inactive Publication Date: 2012-10-31
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Others, such as high-frequency measuring instruments, require high equipment prices, and are not suitable for measuring low-level moisture, so it is difficult to popularize

Method used

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  • Solvent water detection element based on conductive macromolecular compound and manufacturing method thereof
  • Solvent water detection element based on conductive macromolecular compound and manufacturing method thereof
  • Solvent water detection element based on conductive macromolecular compound and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) Clean the ceramic substrate with interdigital gold electrode by lithography and evaporation, and dry it for later use;

[0030] 2) Prepare an aqueous solution of polystyrene sulfonic acid with a concentration of 0.15 g / ml, add aniline distilled under reduced pressure into it, add 10 ml of aniline per liter of polystyrene sulfonic acid aqueous solution, and stir at 0°C for 1 hour , And then add dropwise an aqueous solution with a concentration of 0.05 g / ml ammonium persulfate. The volume ratio of the polystyrene sulfonic acid aqueous solution and the ammonium persulfate aqueous solution is 2:1. After stirring and mixing, let stand for at least 12 hours, precipitate with acetone, and pump Filtering, washing with acetone, and vacuum drying at room temperature for 24 hours to obtain polyaniline nanoparticles;

[0031] 3) Under ultrasonic vibration, the polyaniline nanoparticles prepared in step 2) are formulated into an aqueous solution with a concentration of 20 mg / ml, and t...

Embodiment 2

[0034] 1) Clean the ceramic substrate with interdigital gold electrode by lithography and evaporation, and dry it for later use;

[0035] 2) Prepare an aqueous solution of polystyrene sulfonic acid with a concentration of 0.05 g / ml, add aniline distilled under reduced pressure into it, and add 10 ml of aniline per liter of polystyrene sulfonic acid aqueous solution, and stir for 1 hour at 0°C , And then add dropwise an aqueous solution with a concentration of 0.05 g / ml ammonium persulfate. The volume ratio of the polystyrene sulfonic acid aqueous solution and the ammonium persulfate aqueous solution is 2:1. After stirring and mixing, let stand for at least 12 hours, precipitate with acetone, and pump Filtering, washing with acetone, and vacuum drying at room temperature for 24 hours to obtain polyaniline nanoparticles;

[0036] 3) Under ultrasonic vibration, prepare the polyaniline nanoparticles prepared in step 2) into an aqueous solution with a concentration of 50 mg / ml, and then...

Embodiment 3

[0039] 1) Clean the ceramic substrate with interdigital gold electrode by lithography and evaporation, and dry it for later use;

[0040] 2) Prepare an aqueous solution of polystyrene sulfonic acid with a concentration of 0.20 g / ml, add aniline distilled under reduced pressure into it, add 10 ml of aniline per liter of polystyrene sulfonic acid aqueous solution, and stir at 0°C for 1 hour , And then add dropwise an aqueous solution with a concentration of 0.05 g / ml ammonium persulfate. The volume ratio of the polystyrene sulfonic acid aqueous solution and the ammonium persulfate aqueous solution is 2:1. After stirring and mixing, let stand for at least 12 hours, precipitate with acetone, and pump Filtering, washing with acetone, and vacuum drying at room temperature for 24 hours to obtain polyaniline nanoparticles;

[0041] 3) Under ultrasonic vibration, the polyaniline nanoparticles prepared in step 2) are formulated into an aqueous solution with a concentration of 5 mg / ml, and th...

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Abstract

The invention discloses a solvent water detection element based on a conductive macromolecular compound and a manufacturing method thereof. In the invention, ceramic is used as the basal body; multiple pairs of crossed gold electrodes are arranged on the ceramic; macromolecular water sensitive films are coated on the surfaces of the ceramic basal body and the crossed gold electrode; the sensitivefilm consists of polyaniline and macromolecular water sensitive materials with a half interpenetrating network structure formed by compositing glutaraldehyde-interlinked polyvinyl alcohol. The water sensitive element can be used for detecting water content in multiple organic solvent with different polarities, has the advantages of wide monitoring range, good stability, rapid response, proper impedance, good resilience and detection at room temperature, can be widely used for detecting water content in organic solvent in industrial and agricultural production for identifying the product quality, particularly used for detecting water content in ethanol gasoline and testing and controlling quality of ethanol gasoline, and has positive effect for promoting ethanol gasoline, reducing carbon dioxide emission and promoting low-carbon economy.

Description

Technical field [0001] The invention relates to a solvent moisture detection element based on a conductive polymer compound and a manufacturing method thereof. Background technique [0002] Water is an indispensable substance in the human living environment. 70% of the earth's surface is covered by water, and almost all substances contain water. The detection of moisture has practical and important significance. The moisture content in the air, that is, the detection of humidity plays a very important role in environmental measurement and control such as weather forecasting, environmental monitoring, industrial and agricultural production, and product storage. Therefore, various types of humidity based on inorganic semiconductor ceramics, organic polymer sensitive materials, etc. The sensor has been developed and has been widely used in actual production and life. On the other hand, the measurement of moisture content in solid and liquid substances can be used not only for indu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/06
Inventor 李扬杨慕杰张国强徐钦炜
Owner ZHEJIANG UNIV
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