CN109036626A - A kind of flexible extensible conductive material and its producing device and method - Google Patents
A kind of flexible extensible conductive material and its producing device and method Download PDFInfo
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- CN109036626A CN109036626A CN201810940224.9A CN201810940224A CN109036626A CN 109036626 A CN109036626 A CN 109036626A CN 201810940224 A CN201810940224 A CN 201810940224A CN 109036626 A CN109036626 A CN 109036626A
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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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
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Abstract
The invention discloses a kind of flexible extensible conductive material and its producing device and methods, the material includes elastic matrix, flexible extensible conductive grid, flexible extensible conductive grid includes several in conductive helical monomer, and several conductive helical monomers are arranged in parallel by linescan method and head and the tail connect into an electric conductor.This method comprises: being added dropwise the mixture of conductive helical monomer and organic solvent on metal mask plate, low frequency back and forth shakes；The assembly that will be filled with conductive helical monomer, which is placed in heating furnace, carries out heat treatment welding, forms conductive helical beam；It is cooled to room temperature；Taking-up conductive helical beam, which is put into shaping dies, to be compacted；The elastic matrix of pouring liquid into the shaping dies after compacting；Be heating and curing forming, and demoulding obtains flexible extensible conductive material.The present invention can effectively avoid the problems in stress collection, extend the service life of material；And it solves after mechanically deform repeatedly, the problem of micro-structure separates with elastic matrix and makes material failure.
Description
Technical field
The present invention relates to conductive material manufacture technology fields, can more particularly to a kind of flexibility based on micro- helical structure
Stretch conductive material and its producing device and method.
Background technique
Flexible extensible conductive material is still able to maintain stable conductive characteristic under mechanical stretching or bending state, thus
In flexible electronic, intelligence is dressed, and Internet of Things etc. shows huge application prospect, meanwhile, design and fabrication technology
The always research hotspot of field of new materials.Wherein, it is one important that flexible conducting material is manufactured using deformable micro-structure
Research field, basic principle be using deformable micro-structure realize stretch bending deformation while, keep stable conduction
Property.Presently, these materials are typically all to be based on two-dimensional deformable structure (such as corrugated structure, S type structure, sine knot
Structure etc.), but these two-dimensional structures are easy to generate stress collection in curvature biggish local (wave crest and trough of such as ripple struction)
Middle phenomenon and the service life for shortening material；Or after mechanically deform repeatedly, micro-structure is separated with elastic matrix
And make material failure.Therefore how to change the structure of flexible conducting material becomes this field urgent need to resolve to avoid the above problem
The problem of.
Summary of the invention
The object of the present invention is to provide a kind of flexible extensible conductive material and its producing device and method, bases of the present invention
It is concentrated in three-dimensional micro- stretchable conductive material of helical structure preparative, the stress that can be effectively prevented from two-dimensional structure deformation
Problem extends the service life of material；And solve after mechanically deform repeatedly, micro-structure is separated with elastic matrix
And the problem of making material failure.
To achieve the above object, it the present invention provides a kind of flexible extensible conductive material, including elastic matrix, is set to
Flexible extensible conductive grid in the elastic matrix, the flexible extensible conductive grid include several in conductive helical
Monomer, several conductive helical monomers are arranged in parallel by linescan method and head and the tail connect into an electric conductor.
Optionally, the conductive helical monomer is the equal spiral wire body equal with overall diameter of screw pitch, the conductive helical
The surfacing of monomer is conductive metal or electrical conductivity alloy.
Optionally, the elastic matrix is the elastopolymer being cast in around the flexible extensible conductive grid.
Optionally, the helix length of the conductive helical monomer is 200 μm to 500 μm, and overall diameter is 20 μm to 50 μm,
2 μm to 8 μm of line footpath, screw pitch is 20 μm to 50 μm.
The present invention also provides a kind of preparation facilities of flexible extensible conductive material as described above, including glass base
Plate, metal mask plate, heating furnace, shaping dies；
The metal mask plate is set to the glass substrate upper surface, and the metal mask plate is equipped with multiple rows of bar shaped in parallel
Groove, the strip groove run through the metal mask plate, and the strip groove is adapted with the shape of conductive helical monomer,
Each strip groove is for arranging several conductive helical monomers；
The heating furnace is used to weld the head and the tail of the adjacent conductive helical monomer；
The shaping dies is for being poured elastic matrix.
Optionally, described device further includes vibratory equipment, and the glass substrate and the metal mask plate are set to the vibration
Dynamic equipment, the vibratory equipment is for driving the glass substrate and the metal mask panel vibration to make the conductive helical list
Body is inserted in the strip groove.
The present invention also provides a kind of preparation method of flexible extensible conductive material, using above-mentioned preparation facilities into
Row preparation, which comprises
The mixture of conductive helical monomer and organic solvent is added dropwise in the metal mask plate for being fixedly installed in glass substrate
On, start the assembly that low frequency back and forth shakes glass substrate and metal mask plate, the conductive helical monomer is made to fill up the gold
Belong to the strip groove of mask plate；
The assembly that will be filled with the conductive helical monomer, which is placed in heating furnace, carries out heat treatment welding, makes each institute
The adjacent conductive helical monomer head and the tail stated in strip groove weld together, and form conductive helical beam；It is cooled to room
Temperature；
The metal mask plate is removed from the glass substrate, is taken out the conductive helical beam and is put into shaping dies
Compacting；
The elastic matrix of pouring liquid into the shaping dies after compacting, vacuumizes 5-15 minutes；
Be heating and curing forming, and demoulding obtains flexible extensible conductive material.
Optionally, the direction of vibration of described " low frequency back and forth shakes " is perpendicular to the length direction of the strip groove, vibration
Dynamic frequency is 5Hz, amplitude 20mm-30mm.
Optionally, the assembly that will be filled with the conductive helical monomer, which is placed in heating furnace, carries out heat treatment weldering
It connects and specifically includes:
Temperature in heating furnace is raised to 150 DEG C from room temperature, then is raised to 200 DEG C -400 DEG C with 10 DEG C/min of speed,
1h is kept the temperature, is finally cooled to room temperature the temperature in heating furnace, whole process one leads directly to nitrogen protection.
Optionally, the helix length of the conductive helical monomer is 200 μm to 500 μm, and overall diameter is 20 μm to 50 μm,
2 μm to 8 μm of line footpath, screw pitch is 20 μm to 50 μm；The width of the strip groove is 150 μm, and the length of the strip groove is
2cm-50cm, the metal mask plate with a thickness of 150 μm.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
1, flexible extensible conducting material structure is novel.Flexible extensible conductive material provided by the invention utilizes three-dimensional
Conductive helical monomer carries out group's ordered arrangement and heat treatment spot welding, system as basic deformation unit, and to conductive helical monomer
Make the conductive material of novel flexible extensible.While the material can be realized mechanical stretching deformation or bending, keep stablizing
Electric conductivity.
2, production method is simple and efficient, good manufacturability.The producing device of flexible extensible conductive material provided by the invention
Multiple strip grooves on metal mask plate are utilized with method, space constraint limit is carried out to conductive helical monomer, effectively
Group's ordered arrangement of the micro- helical structure of 3 D complex is realized, and by simple heat treatment process, realizes conductive helical
The welding networking of monomer.
It 3, can large area, mass figuration manufacture.By the ruler for changing metal mask plate, strip groove and shaping dies
Very little parameter can be adjusted the forming dimension of material, realize the manufacture of large area mass.The production method is that realization is micro-
The welding of the group's ordered arrangement and micro-nano particle of spiral provides approach, which is expected to wear applied to flexible electronic, intelligence
It wears, be wirelessly transferred and the popular domains such as new energy.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be in embodiment
Required attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the invention
Example is applied, it for those of ordinary skill in the art, without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is flexible extensible conducting material structure schematic diagram provided in an embodiment of the present invention；
Fig. 2 is the cross-sectional view of A-A in Fig. 1；
Fig. 3 is the cross-sectional view of B-B in Fig. 1；
Fig. 4 is the structural schematic diagram of conductive helical monomer；
Fig. 5 is the structural schematic diagram of metal mask plate；
Fig. 6 is the cross-sectional view of C-C in Fig. 5；
Fig. 7 is the structural schematic diagram of conductive helical beam；
Fig. 8 is the production method flow chart of flexible extensible conductive material provided in an embodiment of the present invention.
Wherein, 0- glass substrate, 1- metal mask plate, 2- strip groove, 3- conductive helical monomer and organic solvent mix
Conjunction object, 4- conductive helical monomer, 5- conductive helical beam, 6- shaping dies, 7- flexible extensible conductive network, 8- liquid height are poly-
Object, 9- flexible extensible conductive material, 10- elastic matrix.
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 embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
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.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
As shown in figs. 1-7, the flexible extensible conductive material 9 provided in this embodiment based on micro- helical structure includes soft
The stretchable conductive network 7 of property and elastic matrix 10, wherein flexible extensible conductive network 7 is inside elastic matrix 10.It is described soft
The stretchable conductive network 7 of property is made of orderly conductive helical monomer 4 (as shown in Figure 4).4 head and the tail phase of conductive helical monomer
The ordered structure to form orientation is connect, and adjacent 4 head and the tail of conductive helical monomer weld together, forms leading of being interweaved
Electric helical bundle 5 (as shown in Figure 7) will form flexible extensible conductive network 7 after the compacting of multiple conductive helical beams 5.The flexibility can
The stretchable structure that three-dimensional micro- spiral is utilized in conductive material is stretched, material is realized and is still able to maintain in mechanically deform surely
Determine the target of electric conductivity.
The conductive helical monomer 4 (as shown in Figure 3) has three-dimensional helical structure, is that screw pitch is equal and outer straight
The equal spiral wire body of diameter, the surfacing of the conductive helical monomer are conductive metal or electrical conductivity alloy.In the present embodiment
In, the length of optional conductive helical monomer 4 is 200 μm to 500 μm, and overall diameter is 20 μm to 50 μm, 2 μm to 8 μm of line footpath,
Screw pitch is 20 μm to 50 μm.The material on 4 surface of conductive helical monomer can be silver, copper, nickel etc..Under tensional state, compared to two dimension
The stretchable structure of plane for, micro- helical structure distribution of force of this three-dimensional more evenly, it is possible to prevente effectively from stress concentrate
Phenomenon is conducive to the service life for promoting material.
The fully wrapped around flexible extensible conductive network 7 of the elastic matrix 10, the material of the elastic matrix 10 can be rubber
Glue, polyurethane, the elastopolymers such as dimethyl silicone polymer.
The present embodiment additionally provides the device for making above-mentioned flexible extensible conductive material, specifically includes: glass substrate,
Metal mask plate, heating furnace, shaping dies；
The metal mask plate is set to the glass substrate upper surface, and the metal mask plate is equipped with multiple rows of bar shaped in parallel
Groove, the strip groove run through the metal mask plate, and the strip groove is adapted with the shape of conductive helical monomer,
Each strip groove is for arranging several conductive helical monomers；
The heating furnace is used to weld the head and the tail of the adjacent conductive helical monomer；
The shaping dies is for being poured elastic matrix.
In the present embodiment, in order to realize the uniform sequential of concussion, described device further includes vibratory equipment, the glass
Substrate and the metal mask plate are set to the vibratory equipment, and the vibratory equipment is for driving the glass substrate and described
Metal mask panel vibration inserts the conductive helical monomer in the strip groove.
As shown in figure 8, the present embodiment additionally provides the production of the flexible extensible conductive material based on conductive helical monomer
Method, the specific steps are as follows:
The dropwise addition of the mixture 3 of conductive helical monomer and organic solvent is being fixedly installed in glass substrate 0 by step 1
On metal mask plate 1, starts the assembly that low frequency back and forth shakes glass substrate 0 and metal mask plate 1, make the conductive helical
Monomer 4 fills up the strip groove 2 of the metal mask plate 1；Space constraint limit is carried out using strip groove 2, realizes conductive spiral shell
Revolve the orientation order distribution of monomer 4.The arrangement method can efficiently realize the large area group directional arrangement of micro- spiral.
In the present embodiment, on above-mentioned metal mask plate 1 parallelly distribute on penetrating strip groove 2, according to be prepared
Flexible extensible conductive grid in conductive helical unit 4 length and outer diameter dimension range, by the width of strip groove 2
It is determined as 150 μm, for length between 2cm-50cm, the spacing between two neighboring strip groove is 2mm-5mm；Metal mask
Plate 1 with a thickness of 150 μm, the strip groove quantity of parallelly distribute on depends on the whole of metal mask plate on one piece of metal mask plate
Body size, 1 material of metal mask plate are stainless steel, the metal or alloy such as copper.
Above-mentioned organic solvent can be dehydrated alcohol or acetone and other organic solvent；
The direction of vibration of above-mentioned " low frequency back and forth shakes " is perpendicular to the length direction of the strip groove, vibration
Dynamic frequency is 5Hz, amplitude 20mm-30mm, constantly concussion assembly, until conductive helical monomer 4 fills up strip groove 2.
Improve the efficiency and uniformity of arrangement.
Step 2, the assembly that will be filled with the conductive helical monomer 4, which is placed in heating furnace, carries out heat treatment welding,
Weld together adjacent 4 head and the tail of conductive helical monomer in each strip groove 2, forms conductive helical beam
5；It is cooled to room temperature.
" heat treatment welding " therein is that the temperature in heating furnace is raised to 150 DEG C from room temperature, then with 10 DEG C/min
Speed is raised to 200 DEG C -400 DEG C, keeps the temperature 1h, is finally cooled to room temperature the temperature in heating furnace, whole process one leads directly to nitrogen
Protection.Heat treatment Fundamentals of Welding are that the metal on 4 surface of conductive helical monomer melts recrystallization at high temperature, make adjacent conduction
Helical element 4 welds together, so that the weldering of conductive helical monomer 4 of dispersion is linked to be whole conductive helical beam 5, the welding
Method is low for equipment requirements, simple to operation, is conducive to large area and manufactures.
Step 3 removes the metal mask plate 1 from the glass substrate 0, takes out the conductive helical beam 5 and is put into
It is compacted in shaping dies；
The pouring liquid high polymer 8 into the shaping dies after compacting vacuumizes 5-15 minutes；
Be heating and curing forming, and demoulding obtains flexible extensible conductive material 9；
Above-mentioned conductive helical beam 5 is joined end to end by the conductive helical monomer 4 of oriented alignment and is welded, and length is by gold
The length for belonging to the strip groove 2 on mask plate 1 determines.
Above-mentioned liquid high polymer 8 can be rubber, polyurethane, and the liquid elastomers high polymer such as dimethyl silicone polymer leads to
Crossing heating can solidify.
" be heating and curing forming ", it is consistent with the condition of cure of liquid high polymer 8.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with its
The difference of his embodiment, the same or similar parts in each embodiment may refer to each other.
Used herein a specific example illustrates the principle and implementation of the invention, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art,
According to the thought of the present invention, there will be changes in the specific implementation manner and application range.In conclusion this specification
Content should not be construed as limiting the invention.
Claims (10)
1. a kind of flexible extensible conductive material, which is characterized in that the flexibility including elastic matrix, in the elastic matrix
Stretchable conductive grid, the flexible extensible conductive grid include several in conductive helical monomer, several conductive helicals
Monomer is arranged in parallel by linescan method and head and the tail connect into an electric conductor.
2. flexible extensible conductive material according to claim 1, which is characterized in that the conductive helical monomer is spiral
Wire body, the surfacing of the conductive helical monomer are conductive metal or electrical conductivity alloy.
3. flexible extensible conductive material according to claim 1, which is characterized in that the elastic matrix is is cast in
State the elastopolymer around flexible extensible conductive grid.
4. flexible extensible conductive material according to claim 2, which is characterized in that the spiral of the conductive helical monomer
Length is 200 μm to 500 μm, and overall diameter is 20 μm to 50 μm, and 2 μm to 8 μm of line footpath, screw pitch is 20 μm to 50 μm.
5. a kind of preparation facilities of flexible extensible conductive material according to any one of claims 1-4, which is characterized in that packet
Include glass substrate, metal mask plate, heating furnace, shaping dies；
The metal mask plate is set to the glass substrate upper surface, and the metal mask plate is equipped with multiple rows of strip groove in parallel,
The strip groove runs through the metal mask plate, and the strip groove is adapted with the shape of conductive helical monomer, each
Shape groove is for arranging several conductive helical monomers；
The heating furnace is used to weld the head and the tail of the adjacent conductive helical monomer；
The shaping dies is for being poured elastic matrix.
6. the preparation facilities of flexible extensible conductive material according to claim 5, which is characterized in that described device is also wrapped
Vibratory equipment is included, the glass substrate and the metal mask plate are set to the vibratory equipment, and the vibratory equipment is for driving
The glass substrate and the metal mask panel vibration insert the conductive helical monomer in the strip groove.
7. a kind of preparation method of flexible extensible conductive material, which is characterized in that utilize preparation described in claim 5 or 6
It is prepared by device, which comprises
The mixture of conductive helical monomer and organic solvent is added dropwise on the metal mask plate for being fixedly installed in glass substrate, is opened
Beginning low frequency back and forth shakes the assembly of glass substrate and metal mask plate, and the conductive helical monomer is made to fill up the metal mask
The strip groove of plate；
The assembly that will be filled with the conductive helical monomer, which is placed in heating furnace, carries out heat treatment welding, makes each bar shaped
Adjacent conductive helical monomer head and the tail in groove weld together, and form conductive helical beam；It is cooled to room temperature；
The metal mask plate is removed from the glass substrate, is taken out the conductive helical beam and is put into shaping dies and is compacted；
The elastic matrix of pouring liquid into the shaping dies after compacting, vacuumizes 5-15 minutes；
Be heating and curing forming, and demoulding obtains flexible extensible conductive material.
8. the preparation method of flexible extensible conductive material according to claim 7, which is characterized in that described " low frequency is past
The direction of vibration of multiple concussion " is perpendicular to the length direction of the strip groove, and the frequency of vibration is 5Hz, amplitude 20mm-
30mm。
9. the preparation method of flexible extensible conductive material according to claim 7, which is characterized in that described to will be filled with institute
The assembly for stating conductive helical monomer is placed in heating furnace be heat-treated welding and specifically include:
Temperature in heating furnace is raised to 150 DEG C from room temperature, then is raised to 200 DEG C -400 DEG C with 10 DEG C/min of speed, heat preservation
Temperature in heating furnace is finally cooled to room temperature by 1h, and whole process one leads directly to nitrogen protection.
10. the preparation method of flexible extensible conductive material according to claim 8, which is characterized in that the conduction spiral shell
The helix length for revolving monomer is 200 μm to 500 μm, and overall diameter is 20 μm to 50 μm, and 2 μm to 8 μm of line footpath, screw pitch is 20 μm to 50
μm；The width of the strip groove is 150 μm, and the length of the strip groove is 2cm-50cm, the thickness of the metal mask plate
Degree is 150 μm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810940224.9A CN109036626B (en) | 2018-08-17 | 2018-08-17 | Flexible stretchable conductive material and manufacturing device and method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810940224.9A CN109036626B (en) | 2018-08-17 | 2018-08-17 | Flexible stretchable conductive material and manufacturing device and method thereof |
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| CN109036626A true CN109036626A (en) | 2018-12-18 |
| CN109036626B CN109036626B (en) | 2019-12-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110416740A (en) * | 2019-08-09 | 2019-11-05 | 北京航空航天大学 | A kind of Meta Materials and its manufacturing method based on micro- helical structure |
| CN110430741A (en) * | 2019-08-09 | 2019-11-08 | 北京航空航天大学 | A kind of electromagnetic shielding material and its preparation facilities and preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110416740A (en) * | 2019-08-09 | 2019-11-05 | 北京航空航天大学 | A kind of Meta Materials and its manufacturing method based on micro- helical structure |
| CN110430741A (en) * | 2019-08-09 | 2019-11-08 | 北京航空航天大学 | A kind of electromagnetic shielding material and its preparation facilities and preparation method |
| CN110416740B (en) * | 2019-08-09 | 2020-06-26 | 北京航空航天大学 | Metamaterial based on micro-spiral structure and manufacturing method thereof |
| CN110430741B (en) * | 2019-08-09 | 2021-09-07 | 北京航空航天大学 | Electromagnetic shielding material and preparation device and preparation method thereof |
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| CN109036626B (en) | 2019-12-24 |
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