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Ionic thin film humidity sensor and preparation method thereof

A humidity sensor and sensor technology, which is applied in the direction of instruments, scientific instruments, measuring devices, etc., can solve the problems of poor flexibility and low transparency

Pending Publication Date: 2020-10-27
HOHAI UNIV CHANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problems of poor flexibility and low transparency of the sensors made in the prior art, the present invention improves the preparation process of the sensor, and proposes a new, simplified process ion-type film humidity sensor and its preparation method

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  • Ionic thin film humidity sensor and preparation method thereof

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0024] 1. Pretreatment of substrate membrane

[0025] The ion exchange membrane Nafion membrane is selected as the base membrane 2, and ultrasonic cleaning, pickling, alkali cleaning and deionized water cleaning are performed on it in sequence.

[0026] 1.1 Ultrasonic cleaning: This step is to remove visible and invisible pollution on the surface. First, the base film 2 is cut into strips of 22 mm×11 mm. Then the temperature of the ultrasonic cleaner was set to 50° C., and the clean...

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Abstract

The invention discloses an ionic thin film humidity sensor and a preparation method thereof. The preparation method includes the steps that a silver nanowire solution is sprayed to the surface of a sensor base film through N times of circulation operation and dried, and an electrode layer with the thickness ranging from 2.4 micrometers to 3.2 micrometers is formed on the surface of the base film.According to the preparation method, the silver nanowire solution is used as an electrode material, and the metal electrode is formed on the surface of the humidity sensor through spraying and hot drying, so not only are few materials required for manufacturing the electrode, environmental protection and no pollution realized, but also the method for manufacturing the electrode is simple in steps,high in efficiency and short in time consumption, meanwhile, the electrode is small in thickness, and the silver nanowire solution is of a network-shaped structure on the surface of the substrate film after being dried, so the thin film sensor has relatively high transparency.

Description

technical field [0001] The invention belongs to the field of chemical sensor preparation, and in particular relates to an ion-type film humidity sensor and a preparation method thereof. Background technique [0002] Control and adjustment of humidity helps to reduce energy consumption and improve product quality. There are many kinds of humidity sensors, which can be divided into telescopic type, evaporative type, dew point type, electronic type, ion type, etc. according to different working principles. Ionic sensors have the advantages of small size, simple operation, high sensitivity, and label-free. [0003] The traditional ionic humidity sensor is a sensor that is made of ionic polymer-metal composites (IPMC) as the main body and can sense changes in the humidity environment. Due to the presence of metal electrodes on the surface, the sensor made The flexibility of the sensor is inhibited, and it is difficult to produce large deformation, which is not conducive to atta...

Claims

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Application Information

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IPC IPC(8): G01N27/12
CPCG01N27/127
Inventor 郝牧宇张磊唐刚强王延杰骆敏舟朱灯林
Owner HOHAI UNIV CHANGZHOU
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