CN104212243A - Preparation method of PEDOT/PSS conductive ink and coating - Google Patents
Preparation method of PEDOT/PSS conductive ink and coating Download PDFInfo
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Abstract
The invention relates to a preparation method of PEDOT/PSS conductive ink and a coating. The preparation process of the conductive ink comprises the following steps: adding a thickener into an acidic PEDOT/PSS dispersion solution or a neutralized PEDOT/PSS dispersion solution to achieve the viscosity required by the ink; polymerizing 3, 4-ethylenedioxythiophene (EDOT) in the presence of polystyrenesulfonate (PSS) to form PEDOT/PSS, adding an alkaline additive to regulate the pH value to near neutral, achieving the use viscosity by an aging process, removing inorganic salts, thus obtaining the PEDOT/PSS dispersion solution with the neutral ink viscosity, then adding at least one condensate and/or non-aqueous solvent type polyester solution formed by guanamine and at least one carbonyl compound into the dispersion solution with the viscosity of the ink as an adhesive and mixing other functional additives to obtain the PEDOT/PSS conductive ink. The PEDOT/PSS conductive coating can be obtained by coating with the conductive ink, wherein the neutral PEDOT/PSS conductive coating is stable and has optimal performances.
Description
Technical field
The present invention relates to a kind of can the PEDOT/PSS electrically conductive ink of neutralisation and the preparation method of coating, belong to conducting polymer field of functional materials.
Background technology
Transparent conductive film, in indicating meter and solar energy industry, has very consequence.In recent years, because of a large amount of productions of flat-panel screens, almost exhaust at present for making the supply of indium tin oxide (Indium Tin Oxide, the ITO) material of transparent conductive film.For this reason, there are many research institutions in the whole world all at searching viable option.In addition, more because the continuous hurricane of price of ITO material rises, and the restriction of ITO material on large size processing procedure, add the rise of flexible electronic industry, the material replacing ITO is suggested in succession.
Conductive polymer poly 3,4-ethylene dioxythiophene-polyvinylbenzenesulfonic acid (PEDOT/PSS) is the polymkeric substance of 3,4-ethylene dioxythiophene (EDOT) monomer.At present, PEDOT/PSS is one of the most widely used conductive polymers in photoelectric component field.As novel transparent conductive material, the transparent conductive film that PEDOT/PSS makes all has traditional ITO material to be difficult to the advantage be equal in large size making and flexible electronic industrial field.
But the development of the transparent conductive film that conductive polymers PEDOT/PSS makes still is subject to the restriction of organic polymer self-defect, is mainly manifested in:
(1) the PEDOT/PSS electrically conductive ink being printed as membrane process requirement use has certain viscosity, often needs to add thickening material in existing high viscosity inks preparation technology.Due to the interpolation of dielectric thickening material, such that the electroconductibility of the transparent conductive film made by PEDOT/PSS electrically conductive ink declines, mist degree rising etc.;
(2) based on the PEDOT/PSS transparent conductive film of polymkeric substance environment resistant, such as, stability that is water-fast, solvent resistant aspect compares ITO and other type transparency electrode novel material still has deficiency;
(3) in addition, because the PEDOT/PSS dispersion liquid prepared shows strongly-acid, metallic conductivity can be caused to decline because of its corrodibility with during metallic contact, seriously limit it and the metallic conduction such as nano-silver thread, metal grill material mixing uses time compatibility, and the stability of transparency electrode made.
Therefore, in order to make conductive polymers PEDOT/PSS realize large-scale application in transparent conductive film field, still need to overcome the problems referred to above.
Summary of the invention
The object of the present invention is to provide a kind of viscosity characteristics affect performance little, environment resistant good can the PEDOT/PSS electrically conductive ink of neutralisation, namely its scheme for solve neutralisation and viscosity problem in reaction process.
In PEDOT/PSS polymerization reaction late stage, first carry out neutralisation process, and then carry out viscosity adjustment by ageing process, last deionizing, namely neutral, that there is ink viscosity PEDOT/PSS dispersion liquid is obtained, thus avoid adding thickening material, after continuing to add at least one functional agent, i.e. obtained PEDOT/PSS electrically conductive ink.This neutral conductive ink can be coated with on a large scale by methods such as silk screen printings, and the conductive coating of gained has high transparent and lower haze value, has astonishing and stable conductivity with the conductive coating obtained after nano-silver thread composite coating film forming.
This method by improving polymerization technique, avoid interpolation and the directly impact of neutralize ions that brings of neutralisation of dielectric thickening material in PEDOT/PSS dispersion liquid, the performances such as the electric conductivity of the film made with this neutral conductive ink, transmittance and mist degree are greatly improved; This neutral PEDOT/PSS material without ion is the electro-conductive material of itself and other kind, as the used in combination of nano-silver thread, metal grill etc. provides possibility, significantly reduce because of acid and corroding metal may, ensure that especially the electroconductibility of gained conductive coating and stability unaffected.In solution of the present invention, by adding organic functional agent pointedly, improve the environment resistant of transparent conductive film, as the stability etc. of the aspects such as water-fast, solvent resistant.The present invention is achieved by the following technical solutions:
1, described PEDOT/PSS electrically conductive ink is all on the basis of dissimilar PEDOT/PSS dispersion liquid, can add organic functional agent and be prepared from.In described organic functions auxiliary agent, at least comprise at least one condenses that a kind of guanamine and at least one carbonyl compound formed as sizing agent.
The condenses that guanamine and at least one carbonyl compound are formed, preferably guanamine and aldehydes or ketones condensation.The aldehydes or ketones be applicable to is: formaldehyde, acetaldehyde, butyraldehyde, acetone or methyl ethyl ketone.Be particularly preferably formaldehyde; The particularly preferred condenses of guanamine and at least one carbonyl compound is guanamine-formaldehyde condensation products, and its structure is as general formula (I)
In formula
R
1represent H or straight or branched C1 ~ C8 alkyl, phenyl or single-, two-, the three-phenyl that replaces, be preferably H or straight or branched C1 ~ C4 alkyl, phenyl, is particularly preferably H or methyl, ethyl and phenyl.
R
2to R
5represent H or CH independently of one another
2-OR
6, radicals R
2to R
5in at least one be not H, and R
6represent H or straight or branched C1 ~ C8 alkyl, preferred H or straight or branched C1 ~ C4 alkyl, be particularly preferably R
2to R
5all represent H or CH
2-OR
6.
And particularly preferred like this guanamine-formaldehyde condensation products can be general formula (I) condenses to each other or with the condensation product of other guanamine.
In addition, described particularly preferred guanamine-formaldehyde condensation products can partly or entirely etherificate.In addition or selectively, described particularly preferred guanamine-formaldehyde condensation products carrys out modification by reacting with amine, aminocarboxylic acids or sulphite, or by with other can with the compound of aldehyde reaction such as phenols or the incompatible modification of ureas cocondensation, to improve the solubleness in water.
The content of condenses in described PEDOT/PSS electrically conductive ink of guanamine and at least one carbonyl compound is 0.001 ~ 15 % by weight based on PEDOT/PSS dispersion liquid weight, is preferably 0.1 ~ 2 % by weight.
2, described PEDOT/PSS electrically conductive ink is all on the basis of dissimilar PEDOT/PSS dispersion liquid, can add organic functional agent and be prepared from.In described organic functions auxiliary agent, at least comprise a kind of using the polyester liquid of the non-aqueous formulation of alcohol, ether, the dissolving of ketone equal solvent as sizing agent.The polyester sizing agent of non-aqueous formulation used specifically refer to multicondensed ethylene glycol two acid esters (n >=10) and modifier thereof or and glycol ether two acid esters and modifier thereof, it modifies mode as terminal siloxane etc.;
Alcohol can be methyl alcohol, ethanol, n-propyl alcohol, Virahol, butanols, n-Octanol, glycol or glycol ethers, as ethylene glycol, 1,2-PD, 1,3-PD or glycol ether; Ether can be ether, positive propyl ether, n-butyl ether, methyl-n-butyl ether, methyl tertiary butyl ether, glycol dimethyl ether, tetrahydrofuran (THF), Isosorbide-5-Nitrae-dioxane.Ketone can be acetone, methylethylketone, methyl iso-butyl ketone (MIBK), methyl tertbutyl ketone;
In polyester liquid, polymer content is 20 ~ 45%, is preferably 25 ~ 30%;
The content of polyester liquid in described PEDOT/PSS electrically conductive ink of the non-aqueous formulation of dissolving with alcohol, ether, ketone equal solvent is 0.001 ~ 15 % by weight based on PEDOT/PSS dispersion liquid weight, is preferably 0.1 ~ 2 % by weight.
In PEDOT/PSS electrically conductive ink provided by the invention, can also add above two class sizing agents, both part by weight 1: 10 ~ 1: 1, total content is respectively based on neutral dispersion liquid weight 0.001 ~ 15 % by weight, is preferably 0.1 ~ 2 % by weight simultaneously.
Sizing agent provided by the invention namely can the PEDOT/PSS electrically conductive ink of relieving haperacidity, also can make the PEDOT/PSS electrically conductive ink of common neutralisation.The latter, for use alkaline additive adjust ph to weakly acidic pH in acid PEDOT/PSS dispersion liquid, wherein due to acid-base reaction meeting generating portion neutral ion, if do not removed, can badly influence the performance of conductive coating.
Realize neutralisation in the polymerization, solve the core that viscosity characteristics is the PEDOT/PSS electrically conductive ink related in the present invention simultaneously.Can add phosphoric acid ester before polyreaction as viscosity modifier, ester moiety wherein can be methyl, ethyl, propyl group, normal-butyl, sec.-propyl and combination thereof; To the neutralisation process that reaction solution carries out after polyreaction, for using alkaline additive adjust ph to weakly acidic pH;
The alkaline additive used can be that alkali metal hydroxide is as lithium hydroxide, sodium hydroxide, potassium hydroxide, alkaline carbonate or supercarbonate are as Quilonum Retard, sodium carbonate, salt of wormwood or sodium bicarbonate, saleratus, alkaline earth metal hydroxides is as magnesium hydroxide, calcium hydroxide, alkaline earth carbonate or supercarbonate are as magnesiumcarbonate, calcium carbonate, ammonia, aliphatic alkylamine such as with the alkyl of the optional C1 ~ C20 replaced list-, two, or three-alkylamine, as methylamine, dimethylamine, Trimethylamine 99, ethamine, diethylamine, triethylamine, thanomin or dimethylethanolamine, aromatic amine is as aniline, pentanoic, adjacent pentanoic, between pentanoic or to pentanoic.
Alkaline additive preferably uses as a solution, and preferred solvent can be water and/or alcohol, in and PEDOT/PSS dispersion liquid.Alcohol can be methyl alcohol, ethanol, n-propyl alcohol, Virahol, butanols, n-Octanol, glycol or glycol ethers, as ethylene glycol, 1,2-PD, 1,3-PD or glycol ether;
Above-mentioned alkaline additive is also suitable for the preparation of the PEDOT/PSS electrically conductive ink of above common neutralisation.
PEDOT/PSS electrically conductive ink provided by the invention, joins in PEDOT/PSS dispersion liquid by alkaline additive, by pH agent regulation system pH value, pH value range is 5.0 ~ 9.0, and preferred pH scope is 6.0 ~ 8.0, and more preferably pH value is 6.5 ~ 7.2;
After pH value regulates, need, through ageing process, make reaction solution reach the range of viscosities of ink requirements, range of viscosities be 1 000 ~ 50 000mPas, and preferred viscosity ranges is 2 000 ~ 20 000mPas; More preferably range of viscosities is 5 000 ~ 8 000mPas;
After ageing to the range of viscosities reaching ink requirements, also need to operate through certain aftertreatment technology, shift by reaction mixture, add cationite and anionite again, to remove inorganic salt, obtain neutral, ink viscosity, without the PEDOT/PSS dispersion liquid of ion, can for preparing neutral conductive ink.The organic functions auxiliary agent added when preparing electrically conductive ink, except sizing agent, also comprises other organic functions auxiliary agent, as conduction-enhancing agent, tensio-active agent and flow agent etc.;
With above-mentioned can the PEDOT/PSS electrically conductive ink of neutralisation, the conductive coating obtaining functionalization can be coated with in the substrate such as glass, PET, PEN, PMMA and PC.
Accompanying drawing explanation
PEDOT/PSS and nano-silver thread compound rear electrode sheet resistance vary with temperature trend
Embodiment
Below in conjunction with embodiment, the present invention will be described in detail, and this embodiment gives detailed embodiment and concrete operational process of craft premised on invention technical scheme, but protection scope of the present invention is not only confined to following embodiment.
First part: the preparation of neutral PEDOT/PSS dispersion liquid
The polymerization technique of PEDOT/PSS dispersion liquid is (with reference to Bayer AG.EP0686662,1995): 10% ferric sulfate (III) of 250g water, 2.5g polystyrolsulfon acid, 55mg and the Sodium Persulfate of 2.35g are joined in reaction vessel, regulate temperature, stirring and dissolving.Temperature is reduced to normal temperature, adds 1.0g ethene-dioxythiophene (EDOT), reacts.
Embodiment 1 ~ 5 and comparative example 1 ~ 2 are on above-mentioned polymerization technique basis, the preparation of neutralisation PEDOT/PSS dispersion liquid.
Embodiment 1:
After PEDOT/PSS polyreaction terminates, stopped reaction.Add 2-amino-2-methyl-1-propanol, after pH meter monitoring adjust ph to weakly acidic pH, ageing 0.5 hour.Mixture is transferred in beaker, then adds the cationite (Lewatit S100H, Lanxess AG) of 50 milliliters and the anionite (Lewatit MP62, Lanxess AG) of 29 milliliters removes inorganic salt.After this mixture is stirred 6 hours, filter out exchanger, rotary viscometer tested viscosity;
Embodiment 2:
After PEDOT/PSS polyreaction terminates, stopped reaction.Add 0.2g triethyl phosphate, and then add 2-amino-2-methyl-1-propanol, after pH meter monitoring adjust ph to weakly acidic pH, ageing 0.5 hour.According to same procedure in embodiment 1, after carrying out yin and yang resin exchange process, rotary viscometer tested viscosity;
Embodiment 3:
After PEDOT/PSS polyreaction terminates, stopped reaction, adds 2-amino-2-methyl-1-propanol, after pH meter monitoring adjust ph to weakly acidic pH, and ageing 1 hour.According to same procedure in embodiment 1, after carrying out yin and yang resin exchange process, rotary viscometer tested viscosity;
Embodiment 4:
After PEDOT/PSS polyreaction terminates, stopped reaction, adds 2-amino-2-methyl-1-propanol, by pH meter monitoring adjust ph to after neutrality, ageing 2 hours, after carrying out yin and yang resin exchange process according to same procedure in embodiment 1, rotary viscometer tested viscosity;
Embodiment 5:
After PEDOT/PSS polyreaction terminates, stopped reaction, adds 2-amino-2-methyl-1-propanol, by pH meter monitoring adjust ph to after neutrality, ageing 5 hours, after carrying out yin and yang resin exchange process according to same procedure in embodiment 1, rotary viscometer tested viscosity;
Comparative example 1:
After in embodiment 1, PEDOT/PSS polyreaction terminates, stopped reaction, ageing 2 hours, after carrying out yin and yang resin exchange process according to same procedure in embodiment 1, add 2-amino-2-methyl-1-propanol, after pH meter monitoring adjust ph to weakly acidic pH, rotary viscometer tested viscosity;
Comparative example 2:
After in embodiment 1, PEDOT/PSS polyreaction terminates, stopped reaction, ageing 5 hours, after carrying out yin and yang resin exchange process according to same procedure in embodiment 1, add 2-amino-2-methyl-1-propanol, after regulating monitoring pH value to weakly acidic pH by pH meter, rotary viscometer tested viscosity;
Table 1: PEDOT/PSS dispersion viscosity and pH value in embodiment 1 ~ 5 and comparative example 1 ~ 2
| ? | Digestion time (hour) | Viscosity (mPas) | PH value |
| Embodiment 1 | 0.5 | 537 | 7.4 |
| Embodiment 2 | 0.5 | 4500 | 7.5 |
| Embodiment 3 | 1 | 2354 | 7.6 |
| Embodiment 4 | 2 | 4672 | 8.0 |
| Embodiment 5 | 5 | 4736 | 7.8 |
| Comparative example 1 | 2 | 25 | 7.5 |
| Comparative example 2 | 5 | 33 | 7.6 |
Conclusion: embodiment and the operational difference of comparative example are: first add alkali adjust ph in embodiment, then ageing different time (0.5 hour, 1 hour, 2 hours, 5 hours), then through anion-cation exchange resin aftertreatment; Comparative example is then first ageing different time (2 hours, 5 hours), then through anion-cation exchange resin aftertreatment, then adds alkali adjust ph.
As clearly seen from Table 1, the viscosity of neutralisation PEDOT/PSS dispersion liquid obtained in embodiment 1,3,4 and 5 increases progressively with the prolongation of digestion time, and to digestion time after 2 hours, viscosity is basicly stable; And embodiment 2, add triethyl phosphate as material, ageing is after 0.5 hour, and viscosity is namely close to stable (substantially identical with 5 medium viscosity values with embodiment 4); The viscosity of neutralisation PEDOT/PSS dispersion liquid obtained in comparative example 1 ~ 2 does not change with digestion time and changes, and is low viscous dispersion liquid, in the coating processes such as silk screen printing, needs to add in advance thickening material and reaches required viscosity and could use.
Second section: the preparation of neutral PEDOT/PSS electrically conductive ink and transparent conductive film performance test
Embodiment 6 ~ 10 is on the basis of the obtained neutralisation PEDOT/PSS dispersion liquid of embodiment 4, adds sizing agent, tensio-active agent and conduction-enhancing agent, preparation neutralisation PEDOT/PSS electrically conductive ink; Comparative example 3 ~ 7 is in comparative example 1 and commercial PH500 product basis, adds thickening material, sizing agent, tensio-active agent and conduction-enhancing agent, preparation neutralisation PEDOT/PSS electrically conductive ink.Benzene guanamine-formaldehyde resin the WH-0.3 used in embodiment and comparative example and hexanodioic acid glycol ether polyester methyl ethyl ketone solution SJS-2 or polyoxyethylene glycol dipelargonate aqueous isopropanol SJS-3 produces by the synthesis of Shanghai synthetic resins institute.
Embodiment 6:
In neutral PEDOT/PSS dispersion liquid obtained in embodiment 4, add WH-03 (1 % by weight),
(0.1 % by weight) and ethylene glycol (5 % by weight);
Embodiment 7:
In neutral PEDOT/PSS dispersion liquid obtained in embodiment 4, add SJS-2 (1 % by weight),
(0.1 % by weight) and ethylene glycol (5 % by weight);
Embodiment 8:
In neutral PEDOT/PSS dispersion liquid obtained in embodiment 4, add SJS-3 (1 % by weight),
(0.1 % by weight) and ethylene glycol (5 % by weight);
Embodiment 9:
In neutral PEDOT/PSS dispersion liquid obtained in embodiment 4, WH-03 (0.5 % by weight), SJS-2 (0.5 % by weight),
(0.1 % by weight) and ethylene glycol (5 % by weight);
Embodiment 10:
In neutral PEDOT/PSS dispersion liquid obtained in embodiment 4, WH-03 (0.5 % by weight), SJS-3 (0.5 % by weight),
(0.1 % by weight) and ethylene glycol (5 % by weight);
Comparative example 3:
In neutral PEDOT/PSS dispersion liquid obtained in comparative example 1, add DOW company's T T-615 (0.5 % by weight), WH-03 (1 % by weight),
(0.1 % by weight) and ethylene glycol (5 % by weight);
Comparative example 4:
In neutral PEDOT/PSS dispersion liquid obtained in comparative example 1, add TT-615 (0.5 % by weight), SJS-2 (1 % by weight),
(0.1 % by weight) and ethylene glycol (5 % by weight);
Comparative example 5:
Commercial Heraeus Inc. CLEVIOS
tMthe PEDOT/PSS dispersion liquid of pH500, adds 2-amino-2-methyl-1-propanol, by pH meter monitoring adjust ph to weakly acidic pH, in obtained neutral PEDOT/PSS dispersion liquid, add TT-615 (0.5 % by weight), WH-03 (1 % by weight)
(0.1 % by weight) and ethylene glycol (5 % by weight);
Comparative example 6:
Commercial Heraeus Inc. CLEVIOS
tMthe PEDOT/PSS dispersion liquid of PH500, adds 2-amino-2-methyl-1-propanol, by pH meter monitoring adjust ph to weakly acidic pH, in obtained neutral PEDOT/PSS dispersion liquid, add TT-615 (0.5 % by weight), SJS-2 (1 % by weight)
(0.1 % by weight) and ethylene glycol (5 % by weight);
Comparative example 7:
Commercial Heraeus Inc. CLEVIOS
tMthe PEDOT/PSS dispersion liquid of PH500, add 2-amino-2-methyl-1-propanol, by pH meter monitoring adjust ph to weakly acidic pH, in obtained neutral PEDOT/PSS dispersion liquid, add TT-615 (0.5 % by weight), WH-03 (0.5 % by weight), SJS-2 (0.5 % by weight)
(0.1 % by weight) and ethylene glycol (5 % by weight);
The preparation of transparent conductive film:
PEDOT/PSS electrically conductive ink obtained in embodiment 6 ~ 10 and comparative example 3 ~ 7, use 100 μm of high transparency PET film (east is beautiful) as base material (transmittance > 92.0%, mist degree < 0.5%), roller coating is carried out with wet-film thickness 20 μm, at 135 DEG C, solidify 5 minutes, obtained transparent conductive film, test correlated performance data (table 2).Wherein, four point probe resistance instrument testing coating square resistance is adopted; Transmittance and mist degree reference standard GB/T 2410-2008 test; Pencil hardness is tested with reference to GB/T6739-2006; Coating adhesion test is with GB/T9286-1998 (cross-cut tester) experiment test;
Table 2: the transparent conductive film performance data that embodiment 6 ~ 10 and comparative example 3 ~ 7 obtain
Conclusion: under the same terms, the film that the electrically conductive ink adding benzene guanamine-formaldehyde resin WH-03 is made, its pencil hardness compares height, but mist degree is bigger than normal, after WH-03 and SJS-2 or SJS-3 blending use, the electrically conductive ink various aspects of performance data obtained reach optimum; And with the addition of TT-615 as the electrically conductive ink after thickening material adjusting viscosity, square resistance and the haze value of making film are all larger.
By rubbing after 10 times with the rayon balls infiltrating different solvents with 1kg pressure, measure the patience of transparent conductive film coating versus solvents.
The results are summarized in table 3:
Zero=solvent resistant, coating is not destroyed;
The solvent resistant of ×=not, coating is destroyed.
Table 3: the patience of the transparent conductive film coating versus solvents that embodiment 6 ~ 10 and comparative example 3 ~ 7 obtain
Experimental result clearly illustrates that, compared with the coating prepared with the dispersion liquid of comparative example, the patience of the coating versus solvents prepared with dispersion liquid of the present invention is higher.
Part III: neutral PEDOT/PSS electrically conductive ink and nano-silver thread compound
In the field of new of transparency electrode, the consideration of level-density parameter during for obtaining high electroconductibility, light transmission rate and fabricate devices common with other material etc., usually can combine PEDOT/PSS and nano-silver thread bi-material and use.The nano-silver thread solution of the use in embodiment 11 and comparative example 8 is that Nanjing Xian Feng Nono-material Science & Technology Ltd. produces.
Embodiment 11:
Neutral PEDOT/PSS electrically conductive ink in nano-silver thread solution and embodiment 10 is coated with (being designated as with modified PEDOT) sequentially successively, use 100 μm of high transparency PET film (east is beautiful) as base material (transmittance > 92.0%, mist degree < 0.5%), roller coating is carried out with wet-film thickness 20 μm, at 135 DEG C, solidify 5 minutes, obtained transparent conductive film;
Comparative example 8:
By Heraeus Inc. CLEVIOS
tMthe PEDOT/PSS dispersion liquid of PH1000, according to same procedure coating (being designated as with PH1000) in embodiment 11, makes transparent conductive film.
The film obtained in embodiment 11 and comparative example 8, the film obtained with the neutral PEDOT/PSS electrically conductive ink (modified PEDOT) in nano-silver thread (AgNW), PH1000 and embodiment 10, under condition of different temperatures, square resistance is tested, and experimental result as shown in Figure 1.
Experimental result clearly illustrates that, temperature condition (90,120,150,180,210 DEG C) is different, and square resistance also there are differences.Especially the conductive film of nano-silver thread and PH1000 compound, show as after temperature rises to 150 DEG C, square resistance suddenly rises, and electric conductivity sharply declines; And using the conductive film of neutral PEDOT/PSS electrically conductive ink and nano-silver thread compound, its square resistance varies with temperature aspect and shows highly stable.In addition be used alone nano-silver thread, PH1000 and neutralisation PEDOT/PSS and make conductive film, vary with temperature resistance and also all show stable performance.Therefore, the PEDOT/PSS electrically conductive ink after neutrality process is when using with the metallic conduction Material cladding such as nano-silver thread, and acid PH1000 product of comparing, shows compatible and stability preferably.
Claims (12)
1. the electrically conductive ink be re-dubbed by functional agents such as PEDOT/PSS dispersion liquid and sizing agents, is characterized in that, adds at least one condenses that at least one guanamine and at least one carbonyl compound formed as wherein a kind of functional agent.
2. the electrically conductive ink be re-dubbed by functional agents such as PEDOT/PSS dispersion liquid and sizing agents, is characterized in that, adds the polyester liquid of the non-aqueous formulation that at least one is dissolved using alcohol, ether, ketone equal solvent as wherein a kind of functional agent.
3. according to the electrically conductive ink described in claim 1,2, it is characterized in that, the polyester liquid of the non-aqueous formulation of adding at least one condenses that guanamine and at least one carbonyl compound formed and/or dissolve using alcohol, ether, ketone equal solvent is as wherein a kind of functional agent, and its addition is 0.001% ~ 15%.
4. the preparation method of the electrically conductive ink be re-dubbed by functional agents such as PEDOT/PSS dispersion liquid and sizing agents, adopt the PEDOT/PSS dispersion liquid of neutralisation, this dispersion liquid is polymerized by EDOT and PSS, it is characterized in that, after polyreaction terminates, add alkaline additive adjust pH, ageing is to after reaching required viscosity, removing inorganic salt, the obtained neutral PEDOT/PSS dispersion liquid with ink viscosity.
5. according to the method described in claim 4, it is characterized in that, in EDOT and PSS polymerization process, add phosphoric acid ester as viscosity modifier.
6., according to the method described in claim 4, alkaline additive is selected from alkali metal hydroxide, alkaline carbonate or supercarbonate, alkaline earth metal hydroxides, alkaline earth metal carbonate or supercarbonate, ammonia, aliphatic alkylamine or aromatic amine.
7. according to the neutralisation PEDOT/PSS dispersion liquid described in claim 4, it is characterized in that, pH value range is 5.0 ~ 9.0.
8. viscosity needed for the ink described in claim 4, is characterized in that, PEDOT/PSS dispersion viscosity scope is 1000 ~ 50000mPas.
9. according to the electrically conductive ink described in claims 1 to 3, it is characterized in that, with the dispersion liquid of acid dispersion or neutralisation process, add thickening material and reach viscosity needed for ink, and add other functional agent, obtained acid or neutralisation electrically conductive ink.
10., according to the method described in claim 5 ~ 8, preparation PEDOT/PSS electrically conductive ink, is characterized in that, the neutral dispersion liquid reaching required ink viscosity is utilized in its preparation process, can not thickening material be added, and add other functional agent, obtained neutralisation electrically conductive ink.
11. according to the method described in claim 5 ~ 8, preparation PEDOT/PSS electrically conductive ink, it is characterized in that, the neutral dispersion liquid reaching required ink viscosity is utilized in its preparation process, thickening material can not be added, and functional agent described in interpolation claims 1 to 3, obtained neutralisation electrically conductive ink.
12., according to described in claim 1 ~ 11, is characterized in that, obtained PEDOT/PSS electrically conductive ink can be used for conduction or anlistatig coating.
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| PCT/CN2015/088806 WO2016034113A1 (en) | 2014-09-03 | 2015-09-02 | Pedot/pss conductive ink and transparent electrode |
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| WO2016034113A1 (en) * | 2014-09-03 | 2016-03-10 | 李大忠 | Pedot/pss conductive ink and transparent electrode |
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| CN105038411A (en) * | 2015-07-14 | 2015-11-11 | 浙江中科立德新材料有限公司 | Conductive ink and preparation method therefor and using method thereof |
| CN105440802A (en) * | 2015-12-22 | 2016-03-30 | 江南大学 | PEDOT conductive ink photodimerizable by ultraviolet light and preparation method thereof |
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| CN109786559A (en) * | 2018-12-28 | 2019-05-21 | 浙江清华柔性电子技术研究院 | Photovoltaic module and intelligent power generation window |
| CN109713135B (en) * | 2018-12-28 | 2022-12-06 | 浙江清华柔性电子技术研究院 | Preparation method of photovoltaic module and preparation method of intelligent power generation window |
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