CN108530994A - The good ink of electric conductivity and its application on rough surface - Google Patents
The good ink of electric conductivity and its application on rough surface Download PDFInfo
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- CN108530994A CN108530994A CN201710118059.4A CN201710118059A CN108530994A CN 108530994 A CN108530994 A CN 108530994A CN 201710118059 A CN201710118059 A CN 201710118059A CN 108530994 A CN108530994 A CN 108530994A
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- Prior art keywords
- ink
- strip
- electrically conductive
- solvent
- layer material
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/52—Electrically conductive inks
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/16—Writing inks
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/38—Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
Abstract
The invention discloses the good ink of electric conductivity and its applications on a kind of rough surface.The good ink of electric conductivity includes strip conductive particle and solvent etc. on the rough surface, and the draw ratio of the strip conductive particle is 10~500：1.The ink of the present invention is using strip conductive particle as main conductive material, excellent conductive performance can be obtained to avoid sintering processes, it is for the adaptable of printing surface roughness simultaneously, there is better electric conductivity on the coarse or punctulate surface of tool, and conductive hollow network structure can also be formed between strip conductive particle, identical or more preferably electric conductivity can be reached in the case where conductive material dosage is greatly reduced, in addition the conductive hollow network structure is also beneficial to filling high-intensity resin, to obtain higher firmness after ink setting.
Description
Technical field
The present invention relates to a kind of electrically conductive inks, and in particular to the good ink of electric conductivity and its is answered on a kind of rough surface
With belonging to printed electronics field.
Background technology
The electrically conductive fluent material usually by viscosity less than 100cP is known as ink or ink (ink) in the industry, to be different from
High viscosity electrocondution slurry used in the techniques such as silk-screen printing, dispensing.And used in inkjet printing (inkjet) and part writing implement
Electrically conductive ink viscosity it is harsher, usually less than 30cP.Under so stringent viscosity index, exploitation electrically conductive ink cannot select
With large scales materials such as the common micro-sized metal powder of previous high viscosity slurry institute, carbon particles, needs then select nanometer ruler
The conductive material of degree includes metallic particles, oxide particle, carbon material (such as carbon nanotube, graphene), conducting polymer etc..
The spherical metal particles of wherein Nano grade (mainly 30-100nm diameters) have good dispersion, sintering temperature moderate, conductive
Property is good, the advantages that being not easy to plug, and becomes the mainstream of the low-viscosities type conductive ink such as current inkjet printing, obtains and widely answer
With.
However, with the further expansion that spherical metal nanoparticles electrically conductive ink is applied, a series of of such material lack
Also in part, extraordinary application field gradually highlights point.Most common problem is that such material needs to heat burning after printing film forming
Knot, although its sintering temperature is stepped down to 100 DEG C or so by early stage close to 300 DEG C, but cannot fully phase out printing
The step for rear heat-agglomerating, the new technologies such as photon sintering, microwave sintering, which substantially remain on, to be heated to material, it is possible to
The printing surface of non-refractory is adversely affected.Also there are new technology developments such as " room temperature are sintered certainly " to come out in the recent period, but this
The feature of spontaneous sintering itself means that hidden danger of the ink there are stability under room temperature.On the other hand, exist on the market
Metal ink or conductive paint that can be conductive without heating, after spontaneous drying, but used conductive material be micron with
The silver powder of upper size or other metal-powders, viscosity is higher and easily causes the blocking of small size spout, is not used to ink-jet
The writing implement of printing or low-viscosity.
Another significant challenge faced using the electrically conductive ink of chondritic metallic particles is schemed after being then printing
The firmness of case is relatively low.The resin material of current electrically conductive ink generally use high intensity is secured after ink setting to improve
Degree, but to ensure that overall conductivity, resin material can only be maintained at a very low ratio, thus bring jail after ink setting
Spend relatively low chronic illness.Increase resin content if it is intensity is improved, the drastically decline of ink overall conductivity can be caused.
In addition, with nanometer spherical metal particles make electrically conductive ink as main component also have to the situation in printing face it is stringent
It is required that.Since the metallic particles of chondritic needs seamless accumulation conductive, once write on relatively rough surface or
When person prints, metal nanoparticle is easy to penetrate into the hole in printing face or gap, causes the waste of electrically conductive ink.Cause
This, existing nano-metal particle electrically conductive ink usually exists when printing very thin on the surface that roughness is more than 200nm
It is very poor macroscopically to show as non-conductive or electric conductivity.Also have when printing prepares multilayer device top electrodes and causes upper and lower layer electricity
Short-circuit risk between pole.
Invention content
The main purpose of the present invention is to provide the good ink of electric conductivity and its application on a kind of rough surface, with gram
Take deficiency in the prior art.
For realization aforementioned invention purpose, the technical solution adopted by the present invention includes：
An embodiment of the present invention provides the good ink of electric conductivity on a kind of rough surface comprising conductive of strip
Grain and solvent, the strip conductive particle are dispersed in the solvent, and the length of the strip conductive particle
Diameter ratio is 10~500：1, preferably 50~350：1, especially preferably 150~250：1.
Further, in the ink strip conductive particle content be 0.01~10wt%, preferably 0.05~
5wt%, especially preferably 0.2~1wt%.
Further, a diameter of 1~60nm of the strip conductive particle.
Further, the length of the strip conductive particle is less than 50 μm, preferably smaller than 8 μm, especially preferably 1~8 μ
m。
The embodiment of the present invention additionally provides a kind of method preparing the good ink of electric conductivity on the rough surface,
Including：Strip conductive particle is dispersed in and forms stable dispersion liquid in solvent, as the ink.
The embodiment of the present invention additionally provides on the rough surface the good ink of electric conductivity in printed electronics
The purposes in field.
It is led by what the good ink of electric conductivity on the rough surface was formed for example, the embodiment of the present invention is additionally provided
Electric layer material.
Further, the electrically conductive layer material includes assembling the conductive hollow network knot formed by strip conductive particle
Structure.
Further, the electrically conductive layer material can be formed on printing face.
For example, the embodiment of the present invention additionally provides a kind of preparation method of electrically conductive layer material, including：It will be described coarse
The good ink of electric conductivity is printed or is written on printing face on surface, forms the electrically conductive layer material.
Compared with prior art, the present invention uses the strip conductive particle with certain draw ratio as main conductive material
Material prepares the electrically conductive ink for forming low-viscosity, and with non-sintered processing, printing surface adaptability, firmness is good by force, after drying
The advantages that.
Description of the drawings
Fig. 1 is the microscope photo of the strip conductive silver particle in an exemplary embodiments of the invention；
Fig. 2 is the microscope photo of the strip conductive silver particle in another exemplary embodiments of the present invention；
Fig. 3 is the microscope photo of the strip conductive silver particle in another exemplary embodiments of the present invention.
Specific implementation mode
For many defects of the prior art, inventor proposes the skill of the present invention through studying for a long period of time and largely putting into practice
Art scheme prepares the electrically conductive ink of low-viscosity, such as using the smaller strip conductive particle of diameter as main conductive material
Under the technical solution, its implementation process and principle etc. will be further explained.It is understood, however, that in the present invention
It, can between each technical characteristic specifically described in above-mentioned each technical characteristic of the invention and below (embodiment) in range
It is combined with each other, to constitute new or preferred technical side's scheme.Due to space limitations, I will not repeat them here.
The good ink of electric conductivity includes strip on a kind of rough surface that the one side of the embodiment of the present invention provides
Shape conductive particle and solvent, the strip conductive particle are dispersed in the solvent, and the strip is conductive
The draw ratio of particle is 10~500：1, preferably 50~350：1, especially preferably 150~250：1.
Further, in the ink strip conductive particle content be 0.01~10wt%, preferably 0.05~
5wt%, especially preferably 0.2~1wt%.
Further, the material of the strip conductive particle include but not limited to the conductive metals such as gold, silver, copper, nickel or
The mixing of two or more metal materials, such as silver-colored coated copper core.It is the length in exemplary embodiments of the present invention referring to shown in Fig. 1-3
The microscope photo of strips of conductive Argent grain.
Further, the viscosity of the ink is 1~1000Cp, preferably 10~100cP.
In some embodiments, the shape of the radial section of the strip conductive particle includes round and/or does not advise
Then polygon etc., preferably irregular polygon.
Preferably, a diameter of 1~60nm of the cross section of the strip conductive particle.
Preferably, the length of the strip conductive particle be less than 50 μm, particularly preferably less than 8 μm, especially preferably 1~
8μm。
If the strip conductive particle continues to elongate, the length scale of metal nanometer line is finally reached (such as more than 8 μ
M, especially more than 30 μm), then its dispersion stabilization can drastically decline, it is easy to precipitation occur and reunite, be unfavorable for the present invention
Practical application, electric conductivity and the stability of ink can not be taken into account.
Ink provided by the invention is by using strip conductive particle as main conductive material, strip conductive particle
Will not be completely by wrapped with insulation in dispersion, therefore it can be very after contacting with each other between strip conductive particle
Spontaneous conduction under room temperature is realized well, has the advantages that non-sintered processing.Meanwhile ink of the invention is because conductive using strip
Particle, for printing surface roughness adaptability also much stronger than the conductive particle of chondritic, especially it is coarse or tool
There is better electric conductivity on punctulate surface.
In some embodiments, the ink also may include dispersion, such as polyvinylpyrrolidone (PVP), ten
Six alkyl trimethyl ammonium bromides (CTAB), lauryl sodium sulfate (SDS), kayexalate (PSS) etc..
Further, the regional area on the strip conductive particle is covered with dispersion molecule.
Preferably, the content of dispersion is 0.01~5wt%, especially preferably 0.1~2wt% in the ink.
Preferably, the ink may also include resin filling materials, such as polyolefin, polyurethane, heterocycle polymer, silicon rubber
Any one in glue, epoxy resin, cellulose (such as hydroxypropyl methyl cellulose), polyethylene glycol, acrylic resin or two
Kind or more combination, but it is not limited to this.
Preferably, in the ink resin filling materials content be 0.1~20wt%, especially preferably 0.5~
10wt%.
In some embodiments, the ink can also include additional conductive ingredient, such as metal oxide as aoxidized
Indium tin (ITO) etc.；Carbon material such as carbon nanotube, carbon fiber etc.；Conducting polymer such as polythiophene, polypyrrole, poly- 3,4- ethylenes two
Oxygen thiophene:Poly styrene sulfonate (PEDOT:PSS) etc., and it is without being limited thereto.
Preferably, in the ink additional conductive ingredient content be 0.01~10wt%, especially preferably 0.05~
4wt%.
In some embodiments, the ink also may include the arbitrary of the auxiliary agents such as surfactant, antifoaming agent, levelling agent
A combination of one or more, but not limited to this.These auxiliary agents can select type known to industry, and can pass through quotient
The approach such as purchase obtain.
Further, the solvent can be water, alcohols solvent, glycol ethers solvent, lipid solvent, ketones solvent, contain
Any one in nitrogen class solvent or two or more combinations, but not limited to this.For example, the alcohols solvent may include second
Any one in alcohol, isopropanol, n-butanol, isobutanol, ethylene glycol, propylene glycol, glycerine, terpinol or two or more groups
It closes, but not limited to this.The glycol ethers solvent may include glycol monoethyl ether, glycol dimethyl ether, ethylene glycol list second
Any one in ether, ethylene glycol diethyl ether or two or more combinations, but not limited to this.The esters solvent may include second
It is arbitrary in acetoacetic ester, butyl acetate, butyl acetate, propylene-glycol ethyl ether acetate, propylene glycol methyl ether acetate
A combination of one or more, but not limited to this.The ketones solvent may include arbitrary in acetone, butanone, cyclohexanone
A combination of one or more, but not limited to this.The nitrogen-containing solvent may include N,N-dimethylformamide, dimethyl
Any one in sulfoxide, N methyl pyrrolidones or two or more combinations, but not limited to this.
Further, the content of solvent is 75~98wt% in the ink.
The good ink component of electric conductivity is simple on rough surface provided by the invention, of low cost, can be used for being suitble to
Low-viscosity, small-bore mode of printing, include but are not limited to inkjet printing, writing implement etc., can be applied to paper, weaving
The material surfaces such as object, plastic film, glass.Preferably, to ensure conductive effect, amount out of ink can be carried out in use
Regulation and control, to ensure that the average thickness finally to form a film is more than 2 μm.
A kind of the of other side offer of the embodiment of the present invention prepares the good oil of electric conductivity on the rough surface
Ink method include：Strip conductive particle is dispersed in and forms stable dispersion liquid in solvent, as the ink.
Further, the preparation method may also include：Strip conductive particle and dispersion, resin are filled into material
One or more mixing uniform in a solvent in material, additional conductive ingredient, surfactant, antifoaming agent, levelling agent form institute
The stable dispersions stated, the as ink.
For example, in some more specifically embodiment, the strip conductive particle can be dispersed in molten
Dispersion liquid is formed in agent, sequentially adds dispersion, resin filling materials, additional conductive ingredient, surfactant, defoaming
Agent, levelling agent etc., and stir evenly, form the good ink of electric conductivity on rough surface；Alternatively, material can also will be disperseed
Material, surfactant etc. are first added in solvent and form mixed solution, and it is molten that strip conductive particle is dispersed in mixing later
In liquid, the addition of reselection or resin filling materials, additional conductive ingredient, antifoaming agent, levelling agent are not added etc., described in formation
Ink.
The good ink preparation method of electric conductivity is easy to operate on rough surface provided by the invention, material therefor cost
It is cheap, it is suitable for large-scale production.
The other side of the embodiment of the present invention additionally provide on the rough surface the good ink of electric conductivity in
The purposes in printed electronics field.
The other side of the embodiment of the present invention is additionally provided by the good ink of electric conductivity on the rough surface
The electrically conductive layer material of formation.The electrically conductive layer material can be attached to the thin layer in substrate, can also be self-supporting
Film.
Further, the electrically conductive layer material includes assembling the conductive hollow network knot formed by strip conductive particle
Structure.Therefore, compared with the conductive layer formed using spherical particle, the present invention is the dosage that conductive material is greatly lowered the case where
Under, electrically conductive layer can still had quite or more preferably electric conductivity, so as to economize on resources, reduce cost.
In some embodiments, resin filling materials be can also be filled in the conductive hollow network structure.Because this
Kind conductive hollow network structure is conducive to fill the high-intensity resin etc. of enough ratios, to obtain higher after ink setting
Firmness.
Preferably, the mass ratio of strip conductive particle and resin filling materials is 1 in the conductive hollow network structure：
1~8, especially preferably 1：2~4.
Further, the square resistance of the electrically conductive layer material is 0.1~100 ohm, especially preferably 0.5~10 Europe
Nurse.
Further, the thickness of the electrically conductive layer material is preferably greater than 2 μm, especially preferably 2~5 μm.
Further, the electrically conductive layer material is formed on printing face.
Preferably, the roughness in the printing face at 10 μm hereinafter, especially preferably 5 μm or less.
Wherein, the printing face can have the rough morphology formed by the protrusion and/or recess of micron-scale.Alternatively,
The printing face can have the pattern by the densely arranged formation of multiple micropores.
Further, the printing face can be the surface of base material, and it is coarse that the base material can be that few fibers are made into
Surface, such as paper, textile fabric etc., can also be any one in plastic film, glass, but it is not limited to this.
The other side of the embodiment of the present invention additionally provides a kind of preparation method of electrically conductive layer material comprising：It will
The good ink of electric conductivity is printed or is written on printing face on the rough surface, forms the electrically conductive layer material.
Further, the preparation method can specifically include：The ink is printed or is written on printing face, and
Under 0~80 DEG C of temperature condition, to drying, (at least 90% or more solvent is waved for placement preferably under room temperature condition (about 25 DEG C)
Hair) after, that is, the electrically conductive layer material is formed, wherein without any sintering operation etc..
Preferably, the roughness in the printing face at 10 μm hereinafter, especially preferably 5 μm or less.
Wherein, the printing face can have the rough morphology formed by the protrusion and/or recess of micron-scale.Alternatively,
The printing face can have the pattern by the densely arranged formation of multiple micropores.
Further, the thickness of the electrically conductive layer material is preferably greater than 2 μm, especially preferably 2~5 μm.
The other side of the embodiment of the present invention additionally provides printed circuit, including the electrically conductive layer material.
The other side of the embodiment of the present invention additionally provides printed electronic device, including the electrically conductive layer material or
The printed circuit.
Further, in the printed electronic device, electrically conductive layer material can be used as conducting channel or function element
(such as antenna, signal generating element, etc.).
The printed electronic device can be all kinds of displays flexible, wearable device etc..And wherein, it is conductive
Layer material can be used as conducting channel or function element etc. to coordinate by well-known form and other devices, herein no longer
It repeats.
Below by way of several embodiments technical solution that present invention be described in more detail.However, selected embodiment is only
For illustrating the present invention, and do not limit the scope of the invention.
Embodiment 1
Choose the strip silver-copper conductive particle alcohol dispersion liquid 50mL that weight ratio is 0.2%, wherein conductive of strip
The ingredient of grain is silver-colored coated copper core, and section is irregular polygon, and sectional dimension ranging from 20~35nm, length are 1~5 micro-
Rice, using polyvinylpyrrolidone (pvp) as dispersion.Then the poly- 3,4- enedioxies of commercialization of 10mL are added thereto
Thiophene：Poly styrene sulfonate (PEDOT:PSS it) and stirs evenly.Water therein can form mixed solvent to adjust with ethyl alcohol
Surface tension and volatility, and PEDOT:PSS is then used as conductive polymer subconstiuent.The hydroxyl of 0.2g is then added in whipping process
The cetomacrogol 1000 of propyl methocel and 0.1g, and continue stirring 2 hours, you can it is used for inkjet printing, final silver-
Copper metal content accounts for 0.16% of total weight of printing ink or so.
Above-mentioned prepared ink is packed into print cartridge, the piezoelectric ink jet printing device using 80 micron diameter nozzles is direct
In the square pattern of common commercialization A4 print on paper 2*2cm, point spacing is set as 20 microns.At 25 DEG C after the completion of printing
Under the conditions of store 5 minutes, the resistance that square both ends are tested with multimeter is less than 50 ohm, and electric conductivity is good.
Comparative example 1
It (is mainly to lead with the spherical nano-Ag particles of 50nm or so diameters to select commercialization conductive ink common on the market
Electric ingredient), and the content of spherical nano-Ag particles is diluted to 0.5% or so of total weight of printing ink, it is same straight using 80 microns
The piezoelectric ink jet printing device of diameter nozzle is directly in the square pattern of common commercialization A4 print on paper 2*2cm, point
Spacing is set as 20 microns.Test discovery is carried out with multimeter, even if commercialization A4 paper is heated 30 points using 120 DEG C or more
More than clock, the square pattern is still non-conductive.
Pass through the comparison of embodiment 1 and comparative example 1, it can be seen that strip conductive particle is relatively passed as main conductive ingredient
The advantage of system spherical particle, that is, have better electric conductivity.
Embodiment 2
The ion aqueous dispersions 20mL that strip conductive silver particle is gone is chosen, the weight ratio of wherein metallic silver particles is
0.5%, the section of metallic silver particles is close to circle, and size range is 10~20nm, and the length of metallic silver particles is 0.2~1 micro-
Rice.Then 30mL weight ratios are added and are 0.05% metallic single-wall carbon nano-tube aqueous solution, and the aqueous poly- ammonia of 0.1g is added
Ester is simultaneously stirred well to dissolving, you can is used for handwriting test, the content of final metallic silver particles accounts for the 0.2% of total weight of printing ink
Left and right.
Above-mentioned prepared ink is packed into commercial steel pen, a 3cm is directly filled on the commercialization printing paper of matte
Long, 1cm wide rectangle pattern.It is stored 10 minutes under the conditions of 25 DEG C after the completion of scribbling, rectangular length is tested with multimeter
The resistance at the both ends 3cm is less than 200 ohm, and electric conductivity is good.
Comparative example 2
It (is mainly to lead with the spherical nano-Ag particles of 50nm or so diameters to select commercialization conductive ink common on the market
Electric ingredient), and the content of spherical nano-Ag particles is diluted to 0.2% or so of total weight of printing ink, it is equally packed into common pen,
The rectangle pattern of a 3cm long, 1cm wide are directly filled on the commercialization printing paper of matte.Test discovery is carried out with multimeter,
Even if by the commercialization printing paper of the matte using 120 DEG C or more heating 30 minutes or more, the rectangle pattern is still non-conductive.By
This advantage of visible strip conductive particle as the more traditional spherical particle of main conductive ingredient.
Embodiment 3
Choose the strip gold conductive particle alcohol dispersion liquid 50mL that weight ratio is 1%, wherein strip conductive particle
Section is substantially circular, and diameter range is 10~15nm, length is 4-7.5 microns, with cetyl trimethylammonium bromide
(CTAB) it is used as dispersion.Then the carbon nano-tube aqueous solutions that 10Ml contains lauryl sodium sulfate (SDS) are added thereto
And it stirs evenly.Water therein can form mixed solvent to adjust surface tension and volatility with ethyl alcohol, and carbon nanotube is then
As additional conductive ingredient.The polyethylene glycol of the hydroxypropyl methyl cellulose and 0.2g of 0.3g is then added in whipping process
800, and continue stirring 2 hours, you can for writing, the content of final metallic conduction particle accounts for the 0.8% of total weight of printing ink
Left and right.
Above-mentioned prepared ink is packed into commercial steel pen, it is directly one full in the common upper figure of commercialization PET film
Then the square pattern of 1*1cm is stored 10 minutes under the conditions of 25 DEG C, the resistance that square both ends are tested with multimeter is less than
150 ohm, electric conductivity is good.
Comparative example 3
It (is mainly to lead with the spherical nano-Ag particles of 30nm or so diameters to select commercialization conductive ink common on the market
Electric ingredient), and the content of spherical nano-Ag particles is diluted to 1% or so of total weight of printing ink, it is same using commercialization pen
Expire the square pattern of a 1*1cm in the common upper figure of commercialization PET film.Test discovery is carried out with multimeter, even if will
For the commercialization PET film using 100 DEG C of heating 20 minutes or more, the square pattern is still non-conductive.
Embodiment 4
Choose the strip silver conductive particle isopropanol dispersion liquid 50mL that weight ratio is 0.01%, wherein conductive of strip
The section of grain is substantially circular, and diameter range is 50~60nm, length is 10-20 microns, is made with polyvinylpyrrolidone (pvp)
For dispersion.The Hydroxypropyl ethyl cellulose of 0.1g is then added in whipping process, and continues stirring 2 hours, you can uses
0.01% or so of total weight of printing ink is still accounted in the content of writing, final metallic conduction particle.
Above-mentioned prepared ink is directly write using the writing brush of commercialization on glass, the length of a 2*5cm is filled
Then square pattern is stored 8 minutes under the conditions of 25 DEG C, be less than 50 ohm with the resistance at multimeter test rectangle both ends, lead
Electrical property is good.
Comparative example 4
It (is mainly to lead with the spherical nano-Ag particles of 50nm or so diameters to select commercialization conductive ink common on the market
Electric ingredient), and the content of spherical nano-Ag particles is diluted to 0.1% or so of total weight of printing ink, equally using commercialization
Writing brush fills the rectangle pattern of a 2*5cm on glass.Test discovery is carried out with multimeter, due to metal component in ink
Content is too low, which dries at normal temperatures, and 150 DEG C of use heating 30 minutes or more is non-conductive.
Pass through the comparison of embodiment 1-4 and comparative example 1-4, it can be seen that strip conductive particle is as main conductive ingredient
The advantage of more traditional spherical particle has better electric conductivity.
In addition, mode of the inventor referring also to embodiment 1- embodiments 4, with the other raw materials listed in this specification
It is tested with condition etc., and the good ink of electric conductivity has equally been made.
Pass through test, it is found that by the ink for the low-viscosity that the above-mentioned technical proposal of the present invention obtains, electric conductivity
Well, have non-sintered processing, printing surface adaptability it is strong, it is dry after the remarkable advantages such as firmness is good.
It should be understood that the technical concepts and features of above-described embodiment only to illustrate the invention, ripe its object is to allow
The personage for knowing technique cans understand the content of the present invention and implement it accordingly, and the protection model of the present invention can not be limited with this
It encloses.Any equivalent change or modification in accordance with the spirit of the invention should be covered by the protection scope of the present invention.
Claims (17)
1. the good ink of electric conductivity on a kind of rough surface, it is characterised in that including strip conductive particle and solvent,
The strip conductive particle is dispersed in the solvent, and the draw ratio of the strip conductive particle be 10~
500：1, preferably 50~350：1, especially preferably 150~250：1.
2. ink according to claim 1, it is characterised in that：The content of strip conductive particle is 0.01 in the ink
~10wt%, preferably 0.05~5wt%, especially preferably 0.2~1wt%；And/or the material of the strip conductive particle
Matter includes any one or two or more combinations in gold, silver, copper, nickel；And/or the viscosity of the ink be 1~
1000Cp, preferably 10~100cP.
3. ink according to claim 1, it is characterised in that：A diameter of 1~60nm of the strip conductive particle；
And/or the length of the strip conductive particle is less than 50 μm, preferably smaller than 8 μm, especially preferably 1~8 μm；And/or institute
The radial cross-sectional shape for stating strip conductive particle includes round and/or irregular polygon.
4. ink according to claim 1, it is characterised in that：Regional area on the strip conductive particle is covered with
Dispersion；Preferably, the content of dispersion is 0.01~5wt%, especially preferably 0.1~2wt% in the ink；It is excellent
Choosing, the dispersion includes polyvinylpyrrolidone, cetyl trimethylammonium bromide, lauryl sodium sulfate, polyphenyl
Any one in vinyl sulfonic acid sodium or two or more combinations.
5. ink according to claim 1, it is characterised in that：The ink further includes resin filling materials；Preferably, institute
The content for stating resin filling materials in ink is 0.1~20wt%, especially preferably 0.5~10wt%；Preferably, the resin
Packing material includes polyolefin, polyurethane, heterocycle polymer, silicon rubber, epoxy resin, cellulose, polyethylene glycol, acrylic acid tree
Any one in fat or two or more combinations.
6. ink according to claim 1, it is characterised in that：The ink further includes additional conductive ingredient；Preferably, institute
The content for stating additional conductive ingredient in ink is 0.01~10wt%, especially preferably 0.05~4wt%；Preferably, described auxiliary
It includes metal oxide, carbon material or conducting polymer to help conductive compositions；Preferably, the metal oxide includes indium oxide
Tin；Preferably, the carbon material includes carbon nanotube and/or carbon fiber；Preferably, the conducting polymer includes polythiophene
And/or polypyrrole.
7. ink according to claim 1, it is characterised in that：The ink further includes surfactant, antifoaming agent, levelling
Any one in agent or two or more combinations.
8. ink according to claim 1, it is characterised in that：The solvent includes that water, alcohols solvent, gylcol ether are molten
Any one in agent, lipid solvent, ketones solvent, nitrogen-containing solvent or two or more combinations；Preferably, the alcohols is molten
Agent includes any one or two kinds in ethyl alcohol, isopropanol, n-butanol, isobutanol, ethylene glycol, propylene glycol, glycerine, terpinol
Above combination；Preferably, the glycol ethers solvent includes glycol monoethyl ether, glycol dimethyl ether, ethylene glycol list second
Any one in ether, ethylene glycol diethyl ether or two or more combinations；Preferably, the esters solvent include ethyl acetate,
Any one in butyl acetate, butyl acetate, propylene-glycol ethyl ether acetate, propylene glycol methyl ether acetate or two
Kind or more combination；Preferably, the ketones solvent include in acetone, butanone, cyclohexanone any one or it is two or more
Combination；Preferably, the nitrogen-containing solvent includes appointing in n,N-Dimethylformamide, dimethyl sulfoxide (DMSO), N methyl pyrrolidones
Meaning a combination of one or more；And/or the content of solvent is 75~98wt% in the ink.
9. the good ink of electric conductivity is led in printed electronics on the rough surface as described in any one of claim 1-8
The purposes in domain.
10. by the electrically conductive layer that the good ink of electric conductivity is formed on the rough surface described in any one of claim 1-8
Material.
11. electrically conductive layer material as claimed in claim 10, it is characterised in that：The electrically conductive layer material includes by strip
Conductive particle assembles the conductive hollow network structure to be formed；Preferably, it is also filled with resin in the conductive hollow network structure
Packing material；Preferably, the mass ratio of strip conductive particle and resin filling materials is in the conductive hollow network structure
1：1~8, especially preferably 1：2~4；Preferably, the square resistance of the electrically conductive layer material is 0.1~100 ohm, especially
Preferably 0.5~10 ohm.
12. electrically conductive layer material as claimed in claim 10, it is characterised in that：The thickness of the electrically conductive layer material is more than 2 μ
M, preferably 2~5 μm.
13. electrically conductive layer material as claimed in claim 12, it is characterised in that：The electrically conductive layer material is formed in printing face
On；Preferably, the roughness in the printing face at 10 μm hereinafter, particularly preferably at 5 μm or less；Preferably, the printing face is
The surface of base material, the base material include any one in paper, textile fabric, plastic film, glass.
14. a kind of preparation method of electrically conductive layer material, it is characterised in that including：Described in any one of claim 1-8
The good ink of electric conductivity is printed or is written on printing face on rough surface, forms the electrically conductive layer material.
15. preparation method as claimed in claim 14, it is characterised in that specifically include：The ink is printed or is written on and is held
It on print face, and under 0~80 DEG C of temperature condition, preferably places at ambient temperature to drying, that is, forms the conduction
Layer material.
16. printed circuit, including the electrically conductive layer material described in any one of claim 10-13.
17. printed electronic device, including the electrically conductive layer material described in any one of claim 10-13 or claim 16 institute
The printed circuit stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710118059.4A CN108530994A (en) | 2017-03-01 | 2017-03-01 | The good ink of electric conductivity and its application on rough surface |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710118059.4A CN108530994A (en) | 2017-03-01 | 2017-03-01 | The good ink of electric conductivity and its application on rough surface |
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| CN108530994A true CN108530994A (en) | 2018-09-14 |
Family
ID=63488596
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| CN201710118059.4A Pending CN108530994A (en) | 2017-03-01 | 2017-03-01 | The good ink of electric conductivity and its application on rough surface |
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| CN111154337A (en) * | 2020-01-22 | 2020-05-15 | 广东南海启明光大科技有限公司 | Normal-temperature self-drying writing type conductive ink and preparation method and application thereof |
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Application publication date: 20180914 |