CN108828329A - A kind of ocean electric field measurement sensor and preparation method thereof - Google Patents
A kind of ocean electric field measurement sensor and preparation method thereof Download PDFInfo
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- 230000005684 electric field Effects 0.000 title claims abstract description 23
- 238000005259 measurement Methods 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 73
- 239000004332 silver Substances 0.000 claims abstract description 60
- 229910052709 silver Inorganic materials 0.000 claims abstract description 59
- 239000012790 adhesive layer Substances 0.000 claims abstract description 24
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000013535 sea water Substances 0.000 claims abstract description 16
- SDLBJIZEEMKQKY-UHFFFAOYSA-M silver chlorate Chemical compound [Ag+].[O-]Cl(=O)=O SDLBJIZEEMKQKY-UHFFFAOYSA-M 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims abstract description 13
- 239000000945 filler Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000003628 erosive effect Effects 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 238000005868 electrolysis reaction Methods 0.000 claims description 19
- 238000010438 heat treatment Methods 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 11
- 239000010410 layer Substances 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 230000007797 corrosion Effects 0.000 claims description 9
- 238000005260 corrosion Methods 0.000 claims description 9
- 229910021389 graphene Inorganic materials 0.000 claims description 9
- 239000006185 dispersion Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- -1 polyethylene Polymers 0.000 claims description 4
- 238000011282 treatment Methods 0.000 claims description 4
- 239000012498 ultrapure water Substances 0.000 claims description 4
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 239000008151 electrolyte solution Substances 0.000 claims description 3
- 238000005538 encapsulation Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 239000013618 particulate matter Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- 230000002441 reversible effect Effects 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 238000007781 pre-processing Methods 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 229910021642 ultra pure water Inorganic materials 0.000 claims description 2
- 238000007654 immersion Methods 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 4
- 150000002500 ions Chemical class 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 abstract description 3
- 229910021607 Silver chloride Inorganic materials 0.000 description 7
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 108010066114 cabin-2 Proteins 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 4
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 3
- 229910052794 bromium Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229920006351 engineering plastic Polymers 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- XMBWDFGMSWQBCA-UHFFFAOYSA-M iodide Chemical compound [I-] XMBWDFGMSWQBCA-UHFFFAOYSA-M 0.000 description 2
- 229940006461 iodide ion Drugs 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 210000004508 polar body Anatomy 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0878—Sensors; antennas; probes; detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/12—Measuring electrostatic fields or voltage-potential
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R3/00—Apparatus or processes specially adapted for the manufacture or maintenance of measuring instruments, e.g. of probe tips
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention discloses a kind of ocean electric field measurement sensors and preparation method thereof, and wherein electric field measurement sensor in ocean includes：Electrode body (1) is made of silver-based (20), adhesive layer (21), protecting film (22), for sensing electric field signal；The relative motion of seawater Yu electrode body (1) for guard electrode body (1) by external collision, while being slowed down in electrode cabin (2)；Solid filler (3) is mounted on the gap between electrode body (1) and electrode cabin (2)；Pedestal (4), for sealing and fixing for electrode body (1) and underwater electrical connector (5)；Underwater electrical connector (5), for conducting the signal of detection；Connecting line (6) is metal silver wire, is used for connection electrode body (1) and underwater electrical connector (5)；Pedestal inside cabin (7) is for providing sensor encapsulated space.The present invention effectively overcomes the shortcomings that silver chlorate is easy to fall off in routine techniques, effectively increases the long-time stability of electrode；By coating processing can erosion with blocking harmful foreign ion to electrode, can be used as the measuring electrode under complex environment.
Description
Technical field
The invention belongs to geophysical survey fields, particularly belong to marine surveys field more particularly to a kind of ocean electric field
Measurement sensor and preparation method thereof.
Background technique
Seabed electric field signal is in, based on low-frequency signal, especially in geophysical exploration, to obtain DEEP STRUCTURE
The time for needing to acquire is very long.Carry out in marine environment the outstanding problem that faces of electric field measurement first is that signal is too weak, and in addition one
A problem is that seawater has strong corrosive, requires the long-time stability of detection sensor very high.
Silver/silver chloride electrode is a kind of common reference electrode, has exchange current density big, and hypopolarization, impedance is low, electricity
The advantages that position is constant is widely used in fields such as ocean engineering, bioelectricity detections.The existing a large amount of texts of related technology of preparing
Offer and Patent Publication, traditional production method first is that electrochemical treatments make its surface chlorination form chlorine by being electrolysed Processing Ag
Change the thin layer of silver, forms silver/silver chloride electrode.In seawater hyperbaric environment, the common silver/silver chloride electrode in laboratory can not make
With, it is therefore desirable to special technology of preparing.Solid reference electrode is made using compacting sintering processing in patent 03138856.6, is fitted
In the seawater for long period of soaking, but the binding force of pressed by powder material is poor, limited using depth in high pressure sea water environment；
Patent 2012100554037 is based on Conventional electrochemical processing and proposes a kind of electrode assembly and preparation method, due to conventional electrification
The silver chloride layer for learning processing adheres to loosely, and surface-active layer is easy to fall off after a period of use, influences the steady in a long-term of electrode
Property.Meanwhile various composition is complicated in seawater, especially bromine, iodine plasma are also easy to produce erosion to silver chlorate, lead to electrode failure.
To realize high precision electro field measurement, the electrode development of high stability is always the hot spot of this field researcher concern
Problem.
Summary of the invention
In view of the deficiencies of the prior art and problem, the present invention propose a kind of ocean electric field measurement that long-time stability are good sensing
Device and preparation method.
According to the present invention in a first aspect, providing a kind of ocean electric field measurement sensor comprising：Electrode body, electrode cabin,
Solid filler, pedestal, underwater electrical connector, connecting line, pedestal inside cabin, wherein electrode body is by silver-based, adhesive layer, protecting film group
At silver-based is made of silver foil, and by electrochemical treatments in one silver of its Surface Creation, silver chlorate adhesive layer, protecting film is covered on
On adhesive layer, electrode body is for sensing electric field signal；Electrode cabin is used for guard electrode body by external collision, while slowing down sea
The relative motion of water and electrode body；Solid filler is mounted on the gap between electrode body and electrode cabin；Pedestal is for fixed electricity
The sealing of polar body and underwater electrical connector；Connecting line is metal silver wire, is used for connection electrode body and underwater electrical connector；Pedestal inside cabin
For providing sensor encapsulated space.
Preferably, electrode cabin material is corrosion-resistant, high voltage bearing high molecular polymer (such as polyethylene) antipriming pipe, hole
100 μm of diameter, seawater can pass freely through, while the large particulate matter inside and outside electrode cabin is isolated.
Preferably, solid filler is Inert absorbent (such as silica), and its role is in further filtering sea
Impurity slows down the corrosion of electrode body.
Preferably, pedestal is the nonmetallic materials of seawater corrosion resistance, the circle as made of ABS engineering plastics, polytetrafluoroethylene (PTFE)
Pipe, one end is for fixing underwater electrical connector, and the other end is for fixing electrode cabin.
Second aspect according to the present invention provides a kind of preparation method of above-mentioned ocean electric field measurement sensor, feature
It is, includes the following steps：
(1) it selects the silver foil of high-purity (99.99%) as substrate, the pretreatment work such as oil removing and cleaning is carried out to silver-based
Make；
(2) silver-based is put into electrolyte solution and is electrolysed twice, by certain electrolysis step and electrolytic parameter, made
The mixture of one layer of silver and silver chlorate is adhered on silver-based surface, forms adhesive layer；
(3) electrolysis treated silver-based is cleaned with ultrapure water, is placed in resistance furnace, after carrying out high-temperature heating a period of time
It takes out；
(4) silver-based after heat treatment is immersed in the graphene oxide dispersion of a certain concentration (1g/L), stands one section
Time, (10s) took out afterwards, is again placed in resistance furnace and dries, and forms protecting film, electrode body is made；
(5) sensor encapsulation is carried out, electrode body is put into electrode cabin first, is put into solid filler, then by watertight
Connector is fixed on the base, and underwater electrical connector is connect by connecting line with electrode body, and pedestal inside cabin is sealed with epoxy resin, is obtained
To complete sensor.
Further, electrolysis step is that silver-based is used as anode to carry out anodic oxidation, current density 50A/m first2, electricity
Solution electricity is 30000As/m2；Then the reverse of polarity, silver-based are electrolysed as cathode, and partial oxidation silver is reduced to silver, electricity
Current density is 10A/cm2, electrolysis electricity 15000As/m2；Same electrolyte is put into the silver foil of purity by equally pre-processing
Electrolysis is participated in solution.
Preferably, the heating rate of resistance furnace high-temperature heating is 5 DEG C/min, keeps the temperature 1 hour at 400 DEG C.
Preferably, graphene oxide dispersion concentration is 1g/L, and the silver-based after heat treatment immerses graphene oxide dispersion
The time is 10s, drying temperature in liquid<50℃.
Using technical solution of the present invention, following beneficial effect can have：
1, this ocean electric field measurement sensor provided by the invention is handled, the chlorine on silver-based surface based on reverse electrolysis
Change and restore part silver in silver-colored adhesive layer, extend silver-based surface is effectively conducted layer, can allow surface by high-temperature heat treatment
Silver chlorate adhesive layer firmly attach on silver-based, effectively overcome the shortcomings that silver chlorate is easy to fall off in routine techniques, greatly
The long-time stability of electrode are improved greatly.
2, this ocean electric field measurement sensor provided by the invention, by the coated film layer on silver chlorate adhesive layer,
On electrodes conduct performance without influence, at the same can erosion with blocking harmful foreign ion to electrode, avoid conventional chlorinating silver electricity
The case where easily being interfered and failed by bromine, iodide ion, can be used as the measuring electrode under complex environment.
Detailed description of the invention
Fig. 1 is according to ocean electric field measurement sensor structure figure of the invention；
Fig. 2 is according to electrode body schematic cross-section of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
Ocean electric field measurement sensor structure figure as shown in Figure 1 comprising：Electrode body 1, by silver-based 20, adhesive layer 21,
Protecting film 22 forms, and silver-based 20 is made of silver foil, by electrochemical treatments in one silver of its Surface Creation, silver chlorate adhesive layer
21, protecting film 22 is covered on adhesive layer 21, and electrode body 1 is for sensing electric field signal；Electrode cabin 2 is used for guard electrode body 1
By external collision, while slowing down the relative motion of seawater Yu electrode body 1；Solid filler 3 is mounted on electrode body 1 and electrode
Gap between cabin 2；Pedestal 4, for sealing and fixing for electrode body 1 and underwater electrical connector 5；Underwater electrical connector 5, for conducting
The signal of detection；Connecting line 6 is metal silver wire, is used for connection electrode body 1 and underwater electrical connector 5；Pedestal inside cabin 7 is for providing biography
Sensor encapsulated space.
In the present invention, 2 material of electrode cabin is corrosion-resistant, high voltage bearing high molecular polymer antipriming pipe, such as poly- second
Alkene antipriming pipe, 100 μm of aperture, seawater can pass freely through, which has certain mechanical strength, can protect electrode body 1
It is not easy clashing and breaking；Since aperture is small, the relative motion of seawater and electrode is slowed down significantly, reduces seawater flowing to signal measurement
It influences, while the large particulate matter inside and outside electrode cabin 2 is isolated, avoid additionally invading.
In the present invention, the solid filler 3 is Inert absorbent, and such as silica, its role is to further mistakes
Extra large impurities in water is filtered, the corrosion of electrode body is slowed down.
In the present invention, the pedestal 4 is the nonmetallic materials of seawater corrosion resistance, such as ABS engineering plastics, polytetrafluoroethylene (PTFE)
Manufactured round tube, one end is for fixing underwater electrical connector 5, and one section for fixing electrode cabin 2.
Fig. 2 illustrates the structural schematic diagram of electrode body 1, is made of silver-based 20, silver, silver chlorate adhesive layer 21, protecting film 22,
1 preparation method of electrode body and encapsulation step are as follows：
(1) it pre-processes.Select high-purity (99.99%) silver with certain specification (long 150mm, width 30mm, thickness 0.2mm)
Foil pre-processes silver-based 20 as silver-based 20, including the work such as oil removing and cleaning, thoroughly removes the dirt on 20 surface of silver-based
Layer makes silver foil surface active, improves the binding force of surface adhesive layer.The silver foil of other two groups of same sizes is used same pre-
Electrolysis auxiliary electrode piece is made in processing mode.
(2) electrolysis is handled.It, will using high purity water and analytically pure sodium chloride proportion at the sodium chloride solution of 35g/L concentration
Pretreated silver-based 20 is placed in the solution to be electrolysed twice, using by same specification and pretreatment in electrolytic process
Electrode slice afterwards participates in reaction.Anode electrolysis is carried out to silver-based 20 first, is carried out using galvanostatic method, current density 50A/
m2, electrolysis electricity 30000As/m2, make silver-based 20 surface uniform fold, one layer of thicker silver chloride layer, extended surface it is effective
Conducting shell.Then, reversion electrolysis polarity is carried out catholyte to silver-based 20, is carried out using galvanostatic method, current density 10A/
cm2, electrolysis electricity 15000As/m2, 50% silver chloride reduction is made to become silver.After being electrolysed twice, 20 surface of silver-based forms one
A adhesive layer 21 formed by silver, agcl mixt.
(3) heat treatment for solidification.Electrolysis treated silver-based 20 and silver, silver chlorate adhesive layer 21 are cleaned with high purity water, put
It is placed in resistance furnace, is heated at high temperature.The heating rate of resistance furnace is 5 DEG C/min, and temperature upper limit control is 400 DEG C, herein
Temperature 1 hour, attach to silver, silver chlorate adhesive layer 21 firmly on silver-based 20.The processing effectively improves adhesive layer
21 firmness, improves sensor stability.
(4) coating processing.Using certain method, disperse as Hummers method matches out the graphene oxide that concentration is 1g/L
Liquid, by after heat treatment silver-based 20 and adhesive layer 21 immerse in proportioned graphene oxide dispersion, stand 10s after take out,
It is then placed in resistance furnace and is dried, Temperature Control of Electric Resistance Furnace is at 50 DEG C.On 21 surface layer of adhesive layer, formation is one thin after drying
Protecting film 22.Protecting film 22 is graphene oxide film, has very strong hydrophily, does not influence electric conductivity, while interface
Good mechanical properties can carry out effective protection to silver-based 20 and adhesive layer 21, and blocking harmful foreign ion (bromine, iodide ion) is right
The infringement of electrode avoids complicated ions bring corrosion function in seawater.Electrode body 1 is formed after coating processing.
(5) sensor encapsulates.Electrode body 1 is put into electrode cabin 2 first, solid filler 3 is put into, then connects watertight
Plug-in unit 5 is fixed on pedestal 4, and underwater electrical connector 5 is connect by connecting line 7 with electrode body 1, and pedestal inside cabin 6 is close with epoxy resin
Envelope, obtains complete sensor.
Above-described specific implementation example has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not limited to this hair the foregoing is merely specific implementation example of the invention
Bright, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention
Protection scope within.
Claims (5)
1. a kind of ocean electric field measurement sensor comprising：Electrode body, electrode cabin, solid filler, pedestal, underwater electrical connector,
Connecting line, pedestal inside cabin, it is characterised in that：
Electrode body is made of silver-based, adhesive layer, protecting film, and silver-based is made of silver foil, by electrochemical treatments in its Surface Creation
One silver, silver chlorate adhesive layer, protecting film are covered on adhesive layer, and electrode body is for sensing electric field signal；Electrode cabin is used for
Guard electrode body slows down the relative motion of seawater and electrode body by external collision；Solid filler is mounted on electrode body
Gap between electrode cabin；Pedestal is used to fix the sealing of electrode body and underwater electrical connector；Connecting line is metal silver wire, is used
In connection electrode body and underwater electrical connector；Pedestal inside cabin is for providing sensor encapsulated space.Electrode cabin material is corrosion resistant
Erosion, high voltage bearing high molecular polymer (such as polyethylene) antipriming pipe, 100 μm of aperture, seawater can pass freely through, while electrode is isolated
Large particulate matter inside and outside cabin.The solid filler is Inert absorbent (such as silica), and its role is to further mistakes
Extra large impurities in water is filtered, the corrosion of electrode body is slowed down.
2. a kind of prepare the method such as above-mentioned electric field measurement sensor in ocean described in claim 1, which is characterized in that including with
Lower step：
(1) it selects the silver foil of high-purity (99.99%) as substrate, the pretreatment work of oil removing and cleaning is carried out to silver-based；
(2) silver-based is put into electrolyte solution and is electrolysed twice, by certain electrolysis step and electrolytic parameter, make silver-based
The mixture of one layer of silver and silver chlorate is adhered on surface, forms adhesive layer；
(3) electrolysis treated silver-based is cleaned with ultrapure water, is placed in resistance furnace, is taken after carrying out high-temperature heating a period of time
Out；
(4) silver-based after heat treatment is immersed in the graphene oxide dispersion of a certain concentration (1g/L), stands a period of time
(10s) takes out afterwards, is again placed in resistance furnace and dries, and forms protecting film, electrode body is made；
(5) sensor encapsulation is carried out, electrode body is put into electrode cabin first, solid filler is put into, then patches watertight
Part is fixed on the base, and underwater electrical connector is connect by connecting line with electrode body, and pedestal inside cabin is sealed with epoxy resin, has been obtained
Whole sensor.
3. the preparation method of electric field measurement sensor in ocean as described in claim 2, which is characterized in that electrolysis step is silver
Base is used as anode to carry out anodic oxidation, current density 50A/m first2, electrolysis electricity 30000As/m2；Then the reverse of polarity,
Silver-based is electrolysed as cathode, and partial oxidation silver is reduced to silver, current density 10A/cm2, electrolysis electricity is
15000As/m2；Electrolysis is participated in by equally pre-processing to be put into same electrolyte solution with the silver foil of purity.
4. the preparation method of electric field measurement sensor in ocean as described in claim 2, which is characterized in that resistance furnace high-temperature heating
Heating rate be 5 DEG C/min, 400 DEG C keep the temperature 1 hour.
5. the preparation method of electric field measurement sensor in ocean as described in claim 2, which is characterized in that graphene oxide dispersion
Liquid concentration is 1g/L, and the time is 10s, drying temperature in the silver-based immersion graphene oxide dispersion after heat treatment<50℃.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111474419A (en) * | 2020-03-25 | 2020-07-31 | 浙江弄潮儿智慧科技有限公司 | Ocean electric field measuring sensor |
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