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Carbon fiber electrode and preparation method for low-frequency ocean electric field detection

A carbon fiber electrode, carbon fiber technology, applied in the direction of carbon fiber, fiber processing, electromagnetic field characteristics, etc., can solve the problems of low surface activity, unable to respond to weak low-frequency signals, etc., achieve high surface activity, promote oxidation etching, and have wide application prospects Effect

Active Publication Date: 2020-12-22
上海康碳复合材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the technical problem that the existing carbon fiber is easily affected by the capacitive reactance effect in the measurement process and cannot respond to weak low-frequency signals due to the lack of oxygen-containing functional groups on its surface and low surface activity. The present invention proposes a Novel carbon fiber electrode and preparation method for low-frequency ocean electric field detection

Method used

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  • Carbon fiber electrode and preparation method for low-frequency ocean electric field detection
  • Carbon fiber electrode and preparation method for low-frequency ocean electric field detection
  • Carbon fiber electrode and preparation method for low-frequency ocean electric field detection

Examples

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Effect test

Embodiment 1

[0028] Such as figure 1 As shown, a new type of carbon fiber electrode for low-frequency ocean electric field detection, its structure includes a copper column 1 for circuit connection, a waterproof sealing ring 2, an electrode body 3, and an electrode protective cover 4. The surface structure of a single carbon fiber includes an oxidized Viscose-based carbon fiber5, nanocomposite film6.

[0029] The electrode preparation method is as follows:

[0030] 1) Pretreatment: place the carbon fiber in an anhydrous ethanol solution and ultrasonically clean it for 90 minutes, wash it with distilled water, and put it in an oven at 80°C for 2 hours;

[0031] 2) Ultrasonic + Concentrated Nitric Acid Combined Oxidation Treatment: Soak the treated carbon fiber in 1) in concentrated nitric acid, treat it in an ultrasonic instrument at 110°C for 4 hours, then wash it with deionized water and absolute ethanol until pH>6, and dry it Stand still for 1 day under constant temperature and humidit...

Embodiment 2

[0036] Such as figure 1 As shown, a new type of carbon fiber electrode for low-frequency ocean electric field detection, its structure includes a copper column 1 for circuit connection, a waterproof sealing ring 2, an electrode body 3, and an electrode protective cover 4. The surface structure of a single carbon fiber includes an oxidized Viscose-based carbon fiber5, nanocomposite film6.

[0037] The electrode preparation method is as follows:

[0038] 1) Pretreatment: place the carbon fiber in an anhydrous ethanol solution and ultrasonically clean it for 90 minutes, wash it with distilled water, and put it in an oven at 80°C for 2 hours;

[0039] 2) Ultrasonic + Concentrated Nitric Acid Combined Oxidation Treatment: Take 1) the treated carbon fiber and soak it in concentrated nitric acid, treat it in an ultrasonic instrument at 70°C for 4 hours, then wash it with deionized water and absolute ethanol until ph>6, and dry it Stand still for 1 day under constant temperature and...

Embodiment 3

[0044] Such as figure 1 As shown, a new type of carbon fiber electrode for low-frequency ocean electric field detection, its structure includes a copper column 1 for circuit connection, a waterproof sealing ring 2, an electrode body 3, and an electrode protective cover 4. The surface structure of a single carbon fiber includes an oxidized Viscose-based carbon fiber5, nanocomposite film6.

[0045] The electrode preparation method is as follows:

[0046] 1) Pretreatment: place the carbon fiber in an anhydrous ethanol solution and ultrasonically clean it for 90 minutes, wash it with distilled water, and put it in an oven at 80°C for 2 hours;

[0047] 2) Ultrasonic + Concentrated Nitric Acid Combined Oxidation Treatment: Take 1) treated carbon fiber and soak it in concentrated nitric acid, treat it in an ultrasonic instrument at 150°C for 4 hours, then wash it with deionized water and absolute ethanol until pH>6, and dry it Stand still for 1 day under constant temperature and hu...

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Abstract

The invention discloses a carbon fiber electrode for detecting a low-frequency marine electric field and a preparation method thereof. The method comprises the steps of: after a ultrasonic and concentrated nitric acid combined oxidation treatment on a common viscose-based carbon fiber, coating the carbon fiber with a nanocomposite film as an electrode core; preprocessing the carbon fiber with ethanol, then immersing the preprocessed carbon fiber in concentrated nitric acid, and oxidizing the preprocessed carbon fiber in an ultrasonic environment; immersing the oxidized carbon fiber in the prepared nanocomposite dispersion, pulling the oxidized carbon fiber by a pulling method, drying the product for 24 hours, and coating the surface of the carbon fiber with a transparent film; connecting the tail end of the carbon fiber with a copper column, coating the carbon fiber with a sealing ring, and placing the whole electrode in an electrode protective cover with a small hole to complete the package. The electrode prepared by the method has the advantages of large specific area and high surface activity so as to respond correctly to low-frequency electric field signals. The applied nano film has high mechanical strength and good thermal stability.

Description

technical field [0001] The invention relates to an electric field sensor, in particular to a novel carbon fiber electrode and a preparation method for detecting low-frequency ocean electric field signals. [0002] technical background [0003] Under the support of the national marine strategy and internationalization strategy, my country's marine science and technology has developed rapidly. As one of the new methods for studying marine geology and exploring marine resources, marine electrical prospecting has gradually attracted widespread attention from the domestic scientific community. The ocean electric field detection electrode is the core sensitive element of this method, and the sensitivity and stability of this element ultimately determine the field application effect of ocean electric prospecting. [0004] At present, the materials for preparing electrodes are divided into active electrodes and inert electrodes according to the mechanism of responding to the electric...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/08G01R29/08D06M10/06D06M15/564D06M11/79D06M101/40
CPCD06M10/06D06M11/79D06M15/564D06M2101/40G01R29/0878G01V3/088Y02A90/30
Inventor 林君王泽臣辛青臧月
Owner 上海康碳复合材料科技有限公司
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