CN108766621A - A kind of preparation method of conductive mixture and its flexible electrocardioelectrode - Google Patents
A kind of preparation method of conductive mixture and its flexible electrocardioelectrode Download PDFInfo
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- CN108766621A CN108766621A CN201810661889.6A CN201810661889A CN108766621A CN 108766621 A CN108766621 A CN 108766621A CN 201810661889 A CN201810661889 A CN 201810661889A CN 108766621 A CN108766621 A CN 108766621A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 40
- 239000000203 mixture Substances 0.000 title claims abstract description 39
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 58
- 238000004987 plasma desorption mass spectroscopy Methods 0.000 claims abstract description 58
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 58
- 239000000843 powder Substances 0.000 claims abstract description 23
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims abstract description 18
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 claims abstract description 18
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000000178 monomer Substances 0.000 claims abstract description 12
- 239000003960 organic solvent Substances 0.000 claims abstract description 12
- 239000006185 dispersion Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 238000013019 agitation Methods 0.000 claims abstract description 5
- 239000000956 alloy Substances 0.000 claims description 51
- 229910045601 alloy Inorganic materials 0.000 claims description 50
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims 1
- 230000007774 longterm Effects 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000000576 coating method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 229910021607 Silver chloride Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000002041 carbon nanotube Substances 0.000 description 2
- 229910021393 carbon nanotube Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035479 physiological effects, processes and functions Effects 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229920005573 silicon-containing polymer Polymers 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 2
- NRTLIYOWLVMQBO-UHFFFAOYSA-N 5-chloro-1,3-dimethyl-N-(1,1,3-trimethyl-1,3-dihydro-2-benzofuran-4-yl)pyrazole-4-carboxamide Chemical compound C=12C(C)OC(C)(C)C2=CC=CC=1NC(=O)C=1C(C)=NN(C)C=1Cl NRTLIYOWLVMQBO-UHFFFAOYSA-N 0.000 description 1
- 229910000521 B alloy Inorganic materials 0.000 description 1
- 230000003698 anagen phase Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000011231 conductive filler Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229920005570 flexible polymer Polymers 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000003862 health status Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 238000000527 sonication Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/12—Braided wires or the like
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- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The present invention relates to a kind of CNT-Ag-PDMS conductive mixtures and its preparation methods of flexible electrocardioelectrode.The preparation method of the CNT-Ag-PDMS conductive mixtures includes the following steps：Mix CNT powder, nano-silver powder and volatile organic solvent；It is ultrasonically treated and obtains mixed dispersion liquid；PDMS monomers are added in mixed dispersion liquid；Magnetic agitation；Evaporate remaining volatile organic solvent；Curing agent is added to stir evenly.The preparation method of a kind of CNT-Ag-PDMS conductive mixtures provided by the invention and its flexible electrocardioelectrode, effectively CNT, Ag can be spread in PDMS, CNT-Ag-PDMS conductive mixtures obtained and its flexible electrocardioelectrode electric conductivity are good, can long term monitoring electro-physiological signals.
Description
Technical field
The present invention relates to the electrode of the measurement electricity physiological signal of medical field, more particularly to a kind of CNT-Ag-PDMS is conductive
The preparation method of mixture and its flexible electrocardioelectrode.
Background technology
Electrode slice is mainly used in the custodial care facility of acquisition Human Physiology electric signal, and the acquisition of electro-physiological signals can be directly anti-
It answers the health status of human body, the real-time of electro-physiological signals, long term monitoring that can predict the generation of certain diseases, makes in time corresponding
Measure, therefore the wide market of electrode slice.According to whether using Signa Gel, electrode is broadly divided into wet electrode and dry electrode.
Electro-physiological signals are generally medically acquired using Ag/AgCl wet electrodes at present, and this disposable electrode disadvantage is apparent, it is conductive
Gel easily air-dries, and stores and shorter using the term of validity, and use for a long time can stimulate skin, influence comfort level, be not suitable for growing
Phase monitors electro-physiological signals.The dry electrode of flexible polymer with biocompatibility can well solve this series of problems,
Long-time service will not stimulate skin.Currently, the mode that the dry electrode of polymer mostly uses greatly the other conductive materials of mixing filling makes it
It is conductive.And carbon nanotube CNT and nano-silver powder Ag are best conductive fillers.CNT random alignments, twine between each other
Around together, good electric conductivity can be also kept when polymer deforms upon.The addition of Ag reduces the hardness of electrode, is allowed to
It limbers up, increases the contact with skin, improve electric conductivity.Corresponding polymer material selects dimethyl silicone polymer mostly
PDMS.PDMS has biocompatibility, and soft and transparent is at low cost, easy to operate, is widely used in biomedical sector.
Chinese invention patent application 201610314959.1 discloses a kind of manufacture craft of dry electrode.This patent application
Chemically coating is disclosed in the substrate of TPU or PU (polyurethane) material, stable conductive Ag/ is formed on its surface
Dry electrode is made in AgCl coatings, this method trivial operations, chemical reagent used is more, and with skin contact defective tightness.
On the whole, the existing mode for preparing dry electrode, cost of manufacture is high, complicated for operation, is unfavorable for industrialization.Simply
Mode, for example, carbon nanotube CNT, silver Ag to be directly filled into polymer and serve as conducting medium, wherein CNT, Ag are poly-
Close an important factor for degree of scatter in object becomes influence electric conductivity.And the mode that CNT, Ag and polymer are directly mixed is very
Difficulty is uniformly dispersed, and reaches good electric conductivity.
The purpose of the present invention is to provide a kind of preparation methods of flexible electrocardioelectrode.It is received using a kind of simple and effective carbon
Mitron, the dispersing method of silver in the polymer, prepare the good carbon nanotube-silver-dimethyl silicone polymer electrode of electric conductivity
Flexible electrocardioelectrode is made in piece, can long term monitoring electro-physiological signals.The present invention is easy to operate, at low cost, is easy to industrialization.
Invention content
The technical problem to be solved in the present invention is to provide a kind of flexible electrocardioelectrode and its preparation method of combination electrode, energy
Effectively CNT, Ag are spread in PDMS, CNT-Ag-PDMS conductive mixtures obtained and its flexible electrocardioelectrode electric conductivity
Can be good, it is suitable for wearable device, it can long term monitoring electro-physiological signals.
In order to solve the above technical problems, the present invention provides a kind of preparation method of CNT-Ag-PDMS conductive mixtures, packet
Include following steps：
Mix CNT powder, nano-silver powder and volatile organic solvent；
It is ultrasonically treated and obtains mixed dispersion liquid；
PDMS monomers are added in the mixed dispersion liquid；
Magnetic agitation；
Evaporate remaining volatile organic solvent；
Curing agent is added to stir evenly.
According to one embodiment of present invention, institute's volatile organic solvent is ethanol solution.
According to one embodiment of present invention, the supersound process continue 8~for 24 hours.
According to one embodiment of present invention, the magnetic agitation continues 2~6h.
According to one embodiment of present invention, the weight ratio of the CNT powder and nano-silver powder is 1:1.
According to one embodiment of present invention, the weight ratio of the CNT powder or nano-silver powder and the PDMS monomers
It is 4%~11%.
According to one embodiment of present invention, the weight ratio of the PDMS monomers and the curing agent is 10:1.
The present invention also provides a kind of preparation method of flexible electrocardioelectrode, led using a kind of CNT-Ag-PDMS above-mentioned
CNT-Ag-PDMS conductive mixtures, include the following steps made from the preparation method of electric mixture：
1) elastic alloy net is worked out, the elastic alloy net is in oblate body；
2) elastic alloy net CNT-Ag-PDMS conductive mixtures described in the outer application of its polar axis one end；
3) the elastic alloy net is buckled in the other end welding electrode of its polar axis.
According to one embodiment of present invention, include the following steps in step 1)：
The elastic alloy net is worked out by warp and weft；
The coiling elastic alloy wire in the warp and weft.
According to one embodiment of present invention, the line footpath of the warp and weft is 0.3mm~0.6mm.
According to one embodiment of present invention, the line footpath of the elastic alloy wire is 0.05mm~0.15mm.
According to one embodiment of present invention, the screw pitch for being wound on the online warp and weft of the elastic alloy is
0.1mm~0.2mm.
The present invention also provides a kind of flexible electrocardioelectrodes, including：
Elastic alloy net is in oblate body；
CNT-Ag-PDMS conduction mixed layers are covered in the outside of polar axis one end of the elastic alloy net；
Electrode button is arranged in the outside of the other end of the polar axis of the elastic alloy net.
According to one embodiment of present invention, the elastic alloy net is made of warp and weft, in the warp and latitude
Elastic alloy wire is wound on line.
According to one embodiment of present invention, the line footpath of the warp and weft is 0.3mm~0.6mm；The elasticity is closed
The line footpath of spun gold is 0.05mm~0.15mm.
The preparation side of a kind of preparation method of CNT-Ag-PDMS conductive mixtures provided by the invention, flexible electrocardioelectrode
Method and its flexible electrocardioelectrode, can effectively spread CNT and Ag, CNT-Ag-PDMS conductive mixtures obtained in PDMS
Electric conductivity is good.Also, the flexible electrocardioelectrode prepared using the CNT-Ag-PDMS conductive mixtures is suitable for wearable set
It is standby, electro-physiological signals can be detected for a long time.
Description of the drawings
The above and other features of the present invention, property and advantage will pass through retouching with reference to the accompanying drawings and examples
It states and becomes readily apparent from, wherein：
Fig. 1 is the flow diagram of one embodiment of the CNT-Ag-PDMS conductive mixture preparation methods of the present invention.
Fig. 2 is the flow diagram of one embodiment of the flexible electrocardioelectrode preparation method of the present invention.
Fig. 3 is the structural schematic diagram of the elastic alloy net of the flexible electrocardioelectrode of the present invention.
Fig. 4 is the structural schematic diagram of one embodiment of the flexible electrocardioelectrode of the present invention.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation describes.Obviously, described embodiments are only a part of embodiments of the present application, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment is illustrative, is never used as to the application and its application or makes
Any restrictions.Based on the embodiment in the application, those of ordinary skill in the art are not making creative work premise
Lower obtained every other embodiment, shall fall in the protection scope of this application.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
Up to the unlimited scope of the present application processed of formula and numerical value.Simultaneously, it should be appreciated that for ease of description, attached each portion shown in the drawings
The size divided not is to be drawn according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanation
A part for book.In shown here and discussion all examples, any occurrence should be construed as merely illustrative, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：Similar label
Similar terms are indicated in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached
It need not be further discussed in figure.
In the description of the present application, it is to be understood that the noun of locality such as " front, rear, top, and bottom, left and right ", " laterally, vertical,
Vertically, the orientation or positional relationship indicated by level " and " top, bottom " etc. is normally based on orientation or position shown in the drawings and closes
System is merely for convenience of description the application and simplifies to describe, and in the absence of explanation to the contrary, these nouns of locality do not indicate that
Signified device or element must have a particular orientation or with specific azimuth configuration and operations with hint, therefore cannot manage
Solution is the limitation to the application protection domain；The noun of locality " inside and outside " refers to inside and outside the profile relative to each component itself.
For ease of description, herein can with use space relative terms, as " ... on ", " in ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, if the device in attached drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (be rotated by 90 ° or be in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
Furthermore, it is necessary to which explanation, limits parts, it is only for be convenient for using the words such as " first ", " second "
Corresponding parts are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this
Apply for the limitation of protection domain.In addition, although term used in this application is selected from public term,
Be some terms mentioned in present specification may be that applicant comes selection, detailed meanings by his or her judgement
Illustrate in the relevant portion of description herein.In addition, it is desirable that not only by used actual terms, and be also to pass through
Meaning that each term is contained understands the application.
Fig. 1 is the flow diagram of one embodiment of the CNT-Ag-PDMS conductive mixture preparation methods of the present invention.Such as figure
Shown, the preparation method 100 of CNT-Ag-PDMS conductive mixtures includes the following steps：
Step 101, mixing CNT powder, nano-silver powder and volatile organic solvent.Wherein, volatile organic solvent is preferred
For alcohol solvent.Mixing CNT powder, nano-silver powder and alcohol solvent can burnt cup mixing.
Step 102, it is ultrasonically treated and obtains mixed dispersion liquid.The mixture that step 101 obtains is put into ultrasonic machine and is surpassed
After sonication, uniform mixed dispersion liquid is obtained.
Step 103, PDMS monomers are added in mixed dispersion liquid.
Step 104, magnetic agitation is placed on magnetic stirrer and stirs.
Step 105, remaining volatile organic solvent is evaporated.Mixed dispersion liquid after will stirring is put into vacuum drying
Case evaporates remaining alcohol solvent.
Step 106, curing agent is added to stir evenly, uniform CNT-Ag-PDMS conductive mixtures is made.
The electric conductivity of CNT-Ag-PDMS conductive mixtures is directly related with the dispersing uniformity of CNT, Ag in PDMS,
Dispersion is more uniform, and electric conductivity is better.In order to improve the electric conductivity of CNT-Ag-PDMS mixtures, CNT-Ag-PDMS conductive mixtures
Preparation realized using two step diffusion methods, i.e., CNT, Ag first in volatile organic solvent ultrasonic disperse it is uniform, add
PDMS monomers keep CNT, Ag fully dispersed in PDMS monomers, are eventually adding curing agent and realize in-situ polymerization.
Preferably, in a step 102, it is ultrasonically treated and needs 8~(hour), preferably 12h for 24 hours.
Preferably, at step 104, magnetic stirring process is under the conditions of 50 DEG C of constant temperature, and mixing time is 2-6h.It is preferred that
Mixing time is 4h.
Preferably, the weight ratio of the CNT powder and nano-silver powder in CNT-Ag-PDMS conductive mixtures is 1:1.More preferably
The weight ratio of ground, CNT powder or nano-silver powder and the PDMS monomers is 4%~11%.
Preferably, the weight ratio of PDMS monomers and curing agent is 10 in step 106:1.
Fig. 2 is the flow diagram of one embodiment of the flexible electrocardioelectrode preparation method of the present invention.Fig. 3 is of the invention
The structural schematic diagram of the elastic alloy net of flexible electrocardioelectrode.Fig. 4 is one embodiment of the flexible electrocardioelectrode of the present invention
Structural schematic diagram.The preparation method 200 of the CNT-Ag-PDMS flexibility electrocardioelectrodes, using CNT- made from aforementioned preparation process
Ag-PDMS conductive mixtures.With reference to figure 2, include the following steps：
Step 201, establishment elastic alloy net 300, elastic alloy net are in oblate body, are similar to the shape of the earth.
Step 202, in outer application CNT- made from aforementioned preparation process of polar axis one end of elastic alloy net 300
Ag-PDMS conductive mixtures form CNT-Ag-PDMS conduction mixed layers after cured.
Step 203, elastic alloy net 300 buckles 303 in the other end welding electrode of its short axle.
Pass through step 201~203, you can obtain flexible electrocardioelectrode 400 shown in Fig. 4.Wherein, the addition of Ag can drop
The hardness of less flexible electrocardioelectrode 400 is allowed to limber up, and increases the contact with skin, improves electric conductivity.Flexible electrocardioelectrode
400 Pasting skins can be used for the wearable medical instrument such as conductive vest, webbing.Using elastic alloy net 300 in polar axis
Has appropriate elasticity on direction so that contact fitting of the flexible electrocardioelectrode 400 with human skin is even closer, at human body
When certain motion state, the side of coating CNT-Ag-PDMS conductive mixtures remains to be tightly attached to skin surface, to keep
Good contact condition is conducive to reduce motion artifacts, is convenient for the acquisition of electro-physiological signals.
Wherein, include the following steps in step 201：
I. elastic alloy net 300 is worked out by warp 301 and weft 302, elastic alloy net 300 can be understood as the earth
Shape, skeleton is made of warp 301 and weft 302；
Ii. the coiling elastic alloy wire on warp 301 and weft 302, i.e., the coiling bullet on the skeleton of elastic alloy net 300
Property B alloy wire.In one embodiment, elastic alloy wire can select Ultimum Ti.
Preferably, the warp 301 of establishment elastic alloy net and the line footpath of weft 302 are 0.3mm~0.6mm.
Preferably, the line footpath of elastic alloy wire is 0.05mm~0.15mm.
Preferably, the screw pitch of coiling warp 301 and the elastic alloy wire on weft 302 is 0.1mm~0.2mm so that bullet
The overall structure of property alloy network 300 is more firm, and deformation nature is more stable.
With reference to figure 4, the present invention also provides a kind of flexible electrocardioelectrodes 400.This kind flexibility electrocardioelectrode 400 includes elasticity
Alloy network 300, conductive mixed layer 304 and electrode button 303.
Wherein, elastic alloy net 300 is in oblate spheroid, and shape is similar to the earth.
Conductive mixed layer 304 is covered in the outside of polar axis one end of elastic metallic net 300.With reference to figure 4, conductive mixed layer
304 can cover from one end of polar axis to equatorial positions.
Electrode button 303 is arranged in the outside of the other end of the polar axis of elastic metallic net 300, i.e. electrode button 303 and conduction is mixed
It is opposite to close position of the layer 304 on elastic metallic net 300.304 side of conductive mixed layer can be close to human skin, conduction mixing
Layer 304 be the CNT-Ag-PDMS conductive mixtures that are obtained by aforementioned preparation process are coated, cure after formed.
Preferably, elastic alloy net 300 is made of warp 301 and weft 302, it is wound on warp 301 and weft 302
Elastic alloy wire.As for example and not limitation, elastic alloy wire can select Ultimum Ti or other elastic alloy materials.
Preferably, the line footpath of warp 301 and weft 302 is 0.3mm~0.6mm, the line footpath of elastic alloy wire is 0.05mm
~0.15mm.
A kind of preparation method of CNT-Ag-PDMS conductive mixtures provided by the invention, a kind of flexible electrocardioelectrode and its
Preparation method has the following advantages that：
1. the flexible electrocardioelectrode prepared through the invention can be applied to wearable device, monitor Human Physiology for a long time
Electric signal；
2. the flexibility electrocardioelectrode can directly paste skin, elastic alloy net increases the compactness of electrode and skin, subtracts
Small motion artifacts；
3. preparation method is easily achieved industrialization, can effectively reduce cost.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting the present invention.Any this field skill
Art personnel without departing from the spirit and scope of the present invention, can make possible variation and modification.Therefore, it is every without departing from
The content of technical solution of the present invention, according to the technical essence of the invention to any modification, equivalent variations made by above example
And modification, it each falls within the protection domain that the claims in the present invention are defined.
Claims (15)
1. a kind of preparation method of CNT-Ag-PDMS conductive mixtures, includes the following steps：
Mix CNT powder, nano-silver powder and volatile organic solvent；
It is ultrasonically treated and obtains mixed dispersion liquid；
PDMS monomers are added in the mixed dispersion liquid；
Magnetic agitation；
Evaporate remaining volatile organic solvent；
Curing agent is added to stir evenly.
2. the preparation method of CNT-Ag-PDMS conductive mixtures according to claim 1, which is characterized in that institute's volatility
Organic solvent is ethanol solution.
3. the preparation method of CNT-Ag-PDMS conductive mixtures according to claim 1, which is characterized in that the ultrasound
Processing continues 8~for 24 hours.
4. the preparation method of CNT-Ag-PDMS conductive mixtures according to claim 1, which is characterized in that the magnetic force
Stirring continues 2~6h.
5. the preparation method of CNT-Ag-PDMS conductive mixtures according to claim 1, which is characterized in that the CNT powder
The weight ratio of end and nano-silver powder is 1:1.
6. the preparation method of CNT-Ag-PDMS conductive mixtures according to claim 5, which is characterized in that the CNT powder
The weight ratio of end or nano-silver powder and the PDMS monomers is 4%~11%.
7. the preparation method of CNT-Ag-PDMS conductive mixtures according to claim 1, which is characterized in that the PDMS
The weight ratio of monomer and the curing agent is 10:1.
8. a kind of preparation method of flexibility electrocardioelectrode, is led using a kind of any CNT-Ag-PDMS of claim 1 to 7
CNT-Ag-PDMS conductive mixtures made from the preparation method of electric mixture, which is characterized in that include the following steps：
1) elastic alloy net is worked out, the elastic alloy net is in oblate body；
2) elastic alloy net CNT-Ag-PDMS conductive mixtures described in the outer application of its polar axis one end；
3) the elastic alloy net is buckled in the other end welding electrode of its polar axis.
9. a kind of preparation method of flexible electrocardioelectrode according to claim 8, which is characterized in that include in step 1)
Following steps：
The elastic alloy net is worked out by warp and weft；
The coiling elastic alloy wire in the warp and weft.
10. a kind of preparation method of flexible electrocardioelectrode according to claim 9, which is characterized in that the warp and latitude
The line footpath of line is 0.3mm~0.6mm.
11. a kind of preparation method of flexible electrocardioelectrode according to claim 9, which is characterized in that the elastic alloy
The line footpath of silk is 0.05mm~0.15mm.
12. a kind of preparation method of flexible electrocardioelectrode according to claim 11, which is characterized in that be wound on the warp
The screw pitch of the elastic alloy wire of line and weft is 0.1mm~0.2mm.
13. a kind of flexibility electrocardioelectrode, which is characterized in that including：
Elastic alloy net is in oblate body；
CNT-Ag-PDMS conduction mixed layers are covered in the outside of polar axis one end of the elastic alloy net；
Electrode button is arranged in the outside of the other end of the polar axis of the elastic alloy net.
14. a kind of flexible electrocardioelectrode according to claim 13, which is characterized in that the elastic alloy net by warp and
Weft is constituted, and elastic alloy wire is wound in the warp and weft.
15. a kind of flexible electrocardioelectrode according to claim 14, which is characterized in that the line footpath of the warp and weft is
0.3mm~0.6mm；The line footpath of the elastic alloy wire is 0.05mm~0.15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810661889.6A CN108766621B (en) | 2018-06-25 | 2018-06-25 | Conductive mixture and preparation method of flexible electrocardio electrode thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810661889.6A CN108766621B (en) | 2018-06-25 | 2018-06-25 | Conductive mixture and preparation method of flexible electrocardio electrode thereof |
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| CN102824168A (en) * | 2012-07-03 | 2012-12-19 | 上海交通大学 | Flexible physiological dry electrode and preparation method thereof |
| KR20130020429A (en) * | 2011-08-19 | 2013-02-27 | 숭실대학교산학협력단 | Conductive polydimethylsiloxane composition for skin electrode and preparation thereof |
| CN107201089A (en) * | 2017-07-11 | 2017-09-26 | 深圳宇联高新科技有限公司 | A kind of preparation method of compliant conductive ink available for 3D printing |
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| KR20130020429A (en) * | 2011-08-19 | 2013-02-27 | 숭실대학교산학협력단 | Conductive polydimethylsiloxane composition for skin electrode and preparation thereof |
| CN102824168A (en) * | 2012-07-03 | 2012-12-19 | 上海交通大学 | Flexible physiological dry electrode and preparation method thereof |
| CN107201089A (en) * | 2017-07-11 | 2017-09-26 | 深圳宇联高新科技有限公司 | A kind of preparation method of compliant conductive ink available for 3D printing |
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