CN114213959A - Antistatic coating liquid and preparation method and application thereof - Google Patents
Antistatic coating liquid and preparation method and application thereof Download PDFInfo
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- CN114213959A CN114213959A CN202111607580.7A CN202111607580A CN114213959A CN 114213959 A CN114213959 A CN 114213959A CN 202111607580 A CN202111607580 A CN 202111607580A CN 114213959 A CN114213959 A CN 114213959A
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- 238000000576 coating method Methods 0.000 title claims abstract description 121
- 239000011248 coating agent Substances 0.000 title claims abstract description 117
- 239000007788 liquid Substances 0.000 title claims abstract description 62
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 claims abstract description 70
- 239000011159 matrix material Substances 0.000 claims abstract description 24
- 229920005989 resin Polymers 0.000 claims abstract description 24
- 239000011347 resin Substances 0.000 claims abstract description 24
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000006185 dispersion Substances 0.000 claims abstract description 18
- 239000011550 stock solution Substances 0.000 claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- 238000009736 wetting Methods 0.000 claims abstract description 14
- 239000002904 solvent Substances 0.000 claims abstract description 13
- 239000000758 substrate Substances 0.000 claims abstract description 13
- 239000007822 coupling agent Substances 0.000 claims abstract description 12
- 239000008367 deionised water Substances 0.000 claims abstract description 12
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 12
- 239000002482 conductive additive Substances 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims description 37
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 18
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 18
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 13
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 10
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 9
- 238000001035 drying Methods 0.000 claims description 9
- 229920000570 polyether Polymers 0.000 claims description 9
- 239000004417 polycarbonate Substances 0.000 claims description 8
- 229920000515 polycarbonate Polymers 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical compound OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 claims description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 150000002009 diols Chemical class 0.000 claims description 6
- 239000000839 emulsion Substances 0.000 claims description 6
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 229920000909 polytetrahydrofuran Polymers 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000002041 carbon nanotube Substances 0.000 claims description 4
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 4
- 239000002105 nanoparticle Substances 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 3
- 239000012752 auxiliary agent Substances 0.000 claims description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 239000004408 titanium dioxide Substances 0.000 claims description 3
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 2
- UEEJHVSXFDXPFK-UHFFFAOYSA-O N-dimethylethanolamine Chemical compound C[NH+](C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-O 0.000 claims description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 239000003002 pH adjusting agent Substances 0.000 claims 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 47
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 16
- 238000005406 washing Methods 0.000 description 16
- 238000000889 atomisation Methods 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 11
- 229920000742 Cotton Polymers 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 230000005611 electricity Effects 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- 230000003068 static effect Effects 0.000 description 7
- 235000011114 ammonium hydroxide Nutrition 0.000 description 5
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229920001940 conductive polymer Polymers 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229920005749 polyurethane resin Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 description 1
- 229940005642 polystyrene sulfonic acid Drugs 0.000 description 1
- 229920000123 polythiophene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
Classifications
-
- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
-
- 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
- C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/18—Homopolymers or copolymers of aromatic monomers containing elements other than carbon and hydrogen
-
- 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
- C09D165/00—Coating compositions based on macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
Abstract
The invention provides an antistatic coating liquid and a preparation method and application thereof, wherein the antistatic coating liquid comprises the following components in parts by weight: stock solutions of aqueous PEDOT/PSS dispersions: 5-75 parts of a pH value regulator: 0.05-0.75 part of conductive additive: 1-8 parts of matrix resin: 5-15 parts of coupling agent, 0.05-0.5 part of deionized water: 1-20 parts of wetting and leveling agent: 0.05-0.5 part of defoaming agent: 0.05-0.5 part of self-made matrix resin. The antistatic coating liquid has the advantages of stable performance, high conductivity, solvent resistance, safety, environmental protection and the like, and the surface resistance of the antistatic coating liquid reaches 10 after the antistatic coating liquid is coated and dried on the surface of a specific substrate5‑106Omega, surface resistance after multiple alcohol washes was maintained at 106‑107Omega, no significant fogging.
Description
Technical Field
The invention relates to the technical field of antistatic coatings, and particularly relates to an antistatic coating liquid and a preparation method and application thereof.
Background
The organic conductive polymer has the performances of both traditional high molecular materials and novel semiconductor materials, and particularly, the doped PEDOT film has the characteristics of high conductivity, good light transmission, excellent thermal stability and environmental stability and the like, so that the organic conductive polymer is the novel conductive polymer which is most widely commercialized at present. The typical poly (3, 4-ethylenedioxythiophene)/polystyrene sulfonic acid (PEDOT/PSS) water-dispersible compound has important application value in the fields of solid capacitor electrode materials, antistatic coatings, electroluminescent materials, organic solar cells and the like due to good conductivity and processability.
In the production and use processes of small electronic components, surface charge accumulation is easily caused by contact friction, a high-strength electric field is formed in a local range, electrostatic discharge is generated, dust pollution or short circuit is adsorbed, and the electronic components are damaged. Thus conductive PEDOT/PSS coatings are an effective means of ensuring the quality of electronic components. This requires that the PEDOT/PSS coatings should not only have good electrical conductivity, but also have excellent mechanical friction resistance and high light transmittance, and at the same time have good alcohol washing resistance.
According to different technical requirements, PEDOT/PSS preparation technical patents with different specifications are published. The Chinese patent with the publication number of CN 102731971A discloses a preparation process of a high-conductivity PEDOT/PSS solution doped with sodium pentosan sulfate, and the product has excellent antistatic performance and high transparency. The Chinese patent with publication number CN 103865364A discloses a formula of a polythiophene antistatic coating liquid raw material, and a high-conductivity antistatic film can be obtained by drying for 10 minutes at 150 ℃ after coating on a PET substrate. The Chinese patent with the publication number of CN 106750449A discloses a preparation process of a nano-modified PEDOT/PSS antistatic coating, and the alcohol washing resistance of an antistatic coating can be improved by increasing the drying temperature and time. Most of the antistatic coating liquid preparation processes disclosed by the above patents have the defects that PEDOT/PSS aqueous dispersion needs to be prepared by self, organic reagents are high in toxicity, alcohol washing resistance is poor, curing conditions are harsh, long-term storage performance is unstable, and the like, and cannot meet specific production requirements of enterprises.
Disclosure of Invention
In view of the above, the invention aims to provide an antistatic coating liquid to solve the problems that the existing antistatic coating liquid PEDOT/PSS aqueous dispersion needs to be self-made, an organic reagent has high toxicity, poor alcohol washing resistance, harsh curing conditions and unstable long-term storage performance.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
an antistatic coating liquid comprises the following components in parts by weight: stock solutions of aqueous PEDOT/PSS dispersions: 5-75 parts of a pH value regulator: 0.05-0.75 part of conductive additive: 1-8 parts of matrix resin: 5-15 parts of coupling agent: 0.05-0.5 part of deionized water: 1-20 parts of wetting and leveling agent: 0.05-0.5 part of defoaming agent: 0.05-0.5 part;
the matrix resin is prepared by the following method: mixing 1-10 parts of dehydrated polycarbonate diol, 0.1-5 parts of polytetrahydrofuran and 2-25 parts of aromatic diisocyanate, heating to 65-85 ℃, adding 1-10 parts of dimethylolpropionic acid and 0.1-5 parts of epoxy resin, reacting for 1-3 hours, adding 0.1-2 parts of propylene glycol, 0.1-3 parts of trimethylolpropane and 0.5-5 parts of acetone, reacting at 60-80 ℃, cooling to 50-70 ℃ to obtain a prepolymer; and adding 0.1-2 parts of triethylamine and 5-50 parts of water into the prepolymer, stirring for 30-50 minutes to obtain a white emulsion, adding 0.1-1 part of nano particles, stirring for 1-3 hours, and removing the solvent to obtain the matrix resin.
Optionally, the stock solution of the aqueous PEDOT/PSS dispersion has a solids content of 0.5-5% and a pH value of 6-10 at 25 ℃.
Optionally, the pH regulator is one or more of diethanolamine, triethanolamine, ethylenediamine, N-dimethylethanolamine, N-diethylethanolamine, ammonia, sodium hydroxide, and potassium hydroxide.
Alternatively, the conductive auxiliary agent can be one or two of ethylene glycol, glycerol, dimethyl sulfoxide and N-methylpyrrolidone.
Optionally, the nanoparticle is one or more of carbon nanotube, graphene, calcium carbonate, silica, and titanium dioxide.
Optionally, the wetting and leveling agent is one or more of silicone, nonionic, and acrylic surface control agents.
Optionally, the defoaming agent is one or more of silicone defoaming agent, nonionic defoaming agent and polyether defoaming agent.
A second object of the present invention is to provide a method for preparing the above antistatic coating liquid, comprising the steps of:
and mixing and stirring the PEDOT/PSS aqueous dispersion stock solution, the pH value regulator, the conductive auxiliary agent, the matrix resin, the coupling agent, the deionized water, the wetting and leveling agent and the defoaming agent to obtain the antistatic coating liquid.
Optionally, the stirring speed of the mixing stirring is 100-500 rpm, and the stirring time is 1-24 hours.
The third purpose of the present invention is to provide an application of the antistatic coating liquid in the antistatic industry, which comprises the following steps:
coating the antistatic coating liquid on a substrate by a wire rod, and drying at the temperature of 100-140 ℃ for 0.5-1 minute to obtain a PEDOT/PSS antistatic coating for antistatic;
the base material is one or more of PET, PE and glass.
Compared with the prior art, the antistatic coating liquid has the following advantages:
1. the invention adopts commercial PEDOT/PSS aqueous dispersion stock solution, the source supply is stable, the stock solution can be used in large quantity, the raw materials of the coating liquid mostly adopt organic reagents or inorganic reagents with low toxicity, the environment-friendly effect is good, and meanwhile, the antistatic coating liquid can be obtained in short drying timeThe antistatic coating liquid with high electric rate and good alcohol washing resistance saves energy, reduces cost, is more suitable for industrial production, and has the surface resistance of 10 after being coated and dried on the surface of a specific substrate5-106Omega, surface resistance after multiple alcohol washes was maintained at 106-107Omega, no significant fogging.
2. The self-made matrix resin has certain performances of solvent resistance, friction resistance and good stability, so that the antistatic coating liquid can be stored for a long time without affecting the performances of solvent resistance, friction resistance and the like.
3. The preparation method is simple, low in cost and environment-friendly, the product can be stored for a long time, the conductivity of the coating film formed on the surface of a specific substrate is excellent, the alcohol washing resistance is good, the light transmittance is high, and the preparation method is suitable for industrial mass production.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail with reference to examples.
Example 1
The antistatic coating liquid is prepared by the following method:
1) mixing 4 parts of dehydrated polycarbonate diol, 3 parts of polytetrahydrofuran and 15 parts of aromatic diisocyanate, heating to 65 ℃, adding 4 parts of dimethylolpropionic acid and 3 parts of epoxy resin, reacting for 3 hours, adding 1 part of propylene glycol, 1 part of trimethylolpropane and 2 parts of acetone, reacting at 80 ℃ until the reaction is finished, and cooling to 70 ℃ to obtain a prepolymer; adding 0.8 part of triethylamine and 20 parts of water into the prepolymer, stirring for 30 minutes to obtain white emulsion, adding 0.6 part of carbon nano tube, stirring for 3 hours, and removing the solvent to obtain matrix resin, wherein the obtained matrix resin has the performances of solvent resistance, friction resistance and good stability, can be wiped by ethanol for more than 200 times, and can be placed at room temperature for more than 6 months;
2) taking 6 parts by weight of the matrix resin in the step 1), adding 0.5 part of 5M ammonia water, gradually and sequentially dropwise adding 5.0 parts of dimethyl sulfoxide, 15 parts of PEDOT/PSS aqueous dispersion stock solution, KH 5600.5 parts of coupling agent, 0.15 part of organic silicon wetting and leveling agent, 0.15 part of polyether defoaming agent and 5 parts of deionized water, accelerating the stirring speed to 400r/min, continuously stirring to be uniform, and obtaining the antistatic coating liquid after the reaction is finished.
A small amount of PEDOT/PSS coating liquid (the antistatic coating liquid in the embodiment) is dropwise added on a PET base film, a No. 2 linear coating rod is used for rolling and forming a film, then the film is placed into a baking oven preheated to 110 ℃, is dried for 1 minute, and is subjected to high-temperature film forming, so that the PEDOT/PSS antistatic coating for preventing the static electricity of the electronic element is obtained.
The resistance of the obtained PEDOT/PSS antistatic coating was measured with a MODEL-100 resistance tester.
As shown by the test, the surface resistance value of the PEDOT/PSS antistatic coating obtained in the embodiment is 106～107Omega, and the surface of the film is uniform and transparent without atomization phenomenon.
The PEDOT/PSS antistatic coating obtained in this example was subjected to an alcohol wash resistance test, which specifically includes the following steps: the surface of the film-forming substrate was soaked with ethanol using absorbent cotton, then wiped continuously 200 times or more, and again placed in the oven under the above conditions to be dried for 30 seconds, and then the surface resistance value of the film was measured with a MODEL-100 resistance tester.
As shown by tests, the surface resistance value of the PEDOT/PSS antistatic coating obtained in the embodiment after being subjected to alcohol washing treatment is 107～108Omega, the film surface is uniform and transparent, and the atomization phenomenon is avoided.
Example 2
The antistatic coating liquid is prepared by the following method:
1) mixing 6 parts of dehydrated polycarbonate diol, 4 parts of polytetrahydrofuran and 18 parts of aromatic diisocyanate, heating to 70 ℃, adding 6 parts of dimethylolpropionic acid and 4 parts of epoxy resin, reacting for 2 hours, adding 1 part of propylene glycol, 2 parts of trimethylolpropane and 2 parts of acetone, reacting at 70 ℃ until the reaction is finished, and cooling to 60 ℃ to obtain a prepolymer; adding 3 parts of triethylamine and 30 parts of water into the prepolymer, stirring for 40 minutes to obtain a white emulsion, adding 0.3 part of nano graphene and 0.1 part of calcium carbonate, stirring for 3 hours, and removing the solvent to obtain a matrix resin, wherein the obtained matrix resin has the performances of solvent resistance, friction resistance and good stability, can be wiped by ethanol for more than 200 times, and can be placed at room temperature for more than 6 months;
2) taking 6 parts by weight of the matrix resin in the step 1), adding 0.25 part of N, N-dimethylethanolamine, gradually and sequentially dropwise adding 3.5 parts of dimethyl sulfoxide, 5 parts of PEDOT/PSS aqueous dispersion stock solution, KH 5600.5 parts of coupling agent, 0.16 part of organic silicon wetting and leveling agent, 0.16 part of polyether defoaming agent and 6 parts of deionized water, accelerating the stirring speed to 400r/min, continuously stirring to be uniform, and obtaining the antistatic coating liquid after the reaction is finished.
A small amount of PEDOT/PSS coating liquid (the antistatic coating liquid in the embodiment) is taken and dripped on a PET base film, a No. 2 linear coating rod is used for rolling and forming a film, then the film is placed in a baking oven preheated to 120 ℃, the drying is carried out for 0.5 minute, and the high-temperature film forming is carried out, so that the PEDOT/PSS antistatic coating for preventing the static electricity of the electronic element is obtained.
The resistance of the obtained PEDOT/PSS antistatic coating was measured with a MODEL-100 resistance tester.
As shown by the test, the surface resistance value of the PEDOT/PSS antistatic coating obtained in the embodiment is 105～106Omega, and the surface of the film is uniform and transparent, and the atomization phenomenon can not be observed.
The PEDOT/PSS antistatic coating obtained in this example was subjected to an alcohol wash resistance test, which specifically includes the following steps: the surface of the film-forming substrate was soaked with absorbent cotton in ethanol, wiped continuously 200 times or more, placed again in the oven under the above conditions and dried for 30 seconds, and then the surface resistance of the film was measured with a MODEL-100 resistance tester.
As shown by tests, the surface resistance value of the PEDOT/PSS antistatic coating obtained in the embodiment after being subjected to alcohol washing treatment is 106～107Omega, the film surface is uniform and transparent, and the atomization phenomenon cannot be observed.
Example 3
The antistatic coating liquid is prepared by the following method:
1) mixing 6 parts of dehydrated polycarbonate diol, 4 parts of polytetrahydrofuran and 18 parts of aromatic diisocyanate, heating to 65 ℃, adding 4 parts of dimethylolpropionic acid and 5 parts of epoxy resin, reacting for 1.5 hours, adding 1 part of propylene glycol, 1 part of trimethylolpropane and 1 part of acetone, reacting at 60 ℃ until the reaction is finished, and cooling to 50 ℃ to obtain a prepolymer; adding 0.8 part of triethylamine and 15 parts of water into the prepolymer, stirring for 30 minutes to obtain white emulsion, adding 0.3 part of carbon nano tube and 0.1 part of silicon dioxide, stirring for 3 hours, removing the solvent to obtain matrix resin, wherein the obtained matrix resin has the performances of solvent resistance, friction resistance and good stability, can be wiped by ethanol for more than 200 times, and can be placed at room temperature for more than 6 months;
2) taking 6 parts by weight of the matrix resin in the step 1), adding 0.5 part of 5M ammonia water, gradually and sequentially dropwise adding 3.0 parts of dimethyl sulfoxide, 8 parts of PEDOT/PSS aqueous dispersion stock solution, 1.0 part of KH 560 coupling agent, 0.16 part of organic silicon wetting and leveling agent, 0.16 part of polyether defoaming agent and 3.0 parts of deionized water, accelerating the stirring speed to 400r/min, continuously stirring to be uniform, and obtaining the antistatic coating liquid after the reaction is finished.
A small amount of PEDOT/PSS coating liquid (the antistatic coating liquid in the embodiment) is dropwise added on a PET base film, a No. 2 linear coating rod is used for rolling and forming a film, then the film is placed in a baking oven preheated to 120 ℃, is dried for 1 minute, and is subjected to high-temperature film forming, so that the PEDOT/PSS antistatic coating for preventing the static electricity of the electronic element is obtained.
The resistance of the obtained PEDOT/PSS antistatic coating was measured with a MODEL-100 resistance tester.
As shown by the test, the surface resistance value of the PEDOT/PSS antistatic coating obtained in the embodiment is 105～106Omega. The film surface is uniform and transparent, and has no atomization phenomenon.
The PEDOT/PSS antistatic coating obtained in this example was subjected to an alcohol wash resistance test, which specifically includes the following steps: the surface of the film-forming substrate was soaked with absorbent cotton in ethanol, wiped continuously 200 times or more, placed again in the oven under the above conditions and dried for 30 seconds, and then the surface resistance of the film was measured with a MODEL-100 resistance tester.
As shown by the test, the PEDOT/PSS obtained in the example is antistaticThe surface resistance value of the electrocoat after the alcohol washing treatment is 106～107Omega, the film surface is uniform and transparent, and the atomization phenomenon is avoided.
Example 4
The antistatic coating liquid is prepared by the following method:
1) mixing 6 parts of dehydrated polycarbonate diol, 4 parts of polytetrahydrofuran and 18 parts of aromatic diisocyanate according to a certain proportion, heating to 70 ℃, adding 6 parts of dimethylolpropionic acid and 5 parts of epoxy resin, reacting for 1 hour, adding 1 part of propylene glycol, 2 parts of trimethylolpropane and 2 parts of acetone, reacting at 70 ℃ until the reaction is finished, and cooling to 60 ℃ to obtain a prepolymer; adding 3 parts of triethylamine and 30 parts of water into the prepolymer, stirring for 30 minutes to obtain a white emulsion, adding 0.6 part of titanium dioxide, stirring for 2 hours, and removing the solvent to obtain a matrix resin, wherein the obtained matrix resin has the performances of solvent resistance, friction resistance and good stability, can be wiped with ethanol for more than 200 times, and can be placed at room temperature for more than 6 months;
2) taking 6 parts by weight of the matrix resin in the step 1), adding 0.5 part of 5M ammonia water, gradually and sequentially dropwise adding 3.0 parts of dimethyl sulfoxide, 15 parts of PEDOT/PSS aqueous dispersion stock solution, 1.5 parts of KH 560 coupling agent, 0.2 part of organic silicon wetting and leveling agent, 0.2 part of polyether defoaming agent, 5 parts of deionized water and 3 parts of N-methylpyrrolidone, accelerating the stirring speed to 500r/min, continuously stirring to be uniform, and obtaining the antistatic coating liquid after the reaction is finished.
A small amount of PEDOT/PSS coating liquid (the antistatic coating liquid in the embodiment) is dropwise added on a PET base film, a No. 2 linear coating rod is used for rolling and forming a film, then the film is placed in a baking oven preheated to 120 ℃, is dried for 1 minute, and is subjected to high-temperature film forming, so that the PEDOT/PSS antistatic coating for preventing the static electricity of the electronic element is obtained.
The resistance of the obtained PEDOT/PSS antistatic coating was measured with a MODEL-100 resistance tester.
As shown by the test, the surface resistance value of the PEDOT/PSS antistatic coating obtained in the embodiment is 106～107Omega, and the surface of the film is uniform and transparent without atomization phenomenon.
The PEDOT/PSS antistatic coating obtained in this example was subjected to an alcohol wash resistance test, which specifically includes the following steps: the surface of the film-forming substrate was soaked with absorbent cotton in ethanol, wiped continuously 200 times or more, placed again in the oven under the above conditions and dried for 30 seconds, and then the surface resistance of the film was measured with a MODEL-100 resistance tester.
As shown by tests, the surface resistance value of the PEDOT/PSS antistatic coating obtained in the embodiment after being subjected to alcohol washing treatment is 108～109Omega, the film surface is uniform and transparent, and the atomization phenomenon is avoided.
Comparative example 1
The antistatic coating liquid is prepared by the following method:
according to the weight portion, 6 portions of commercial aqueous polyacrylic resin is taken, 0.5 portion of 5M ammonia water is added, then 5.0 portions of dimethyl sulfoxide, 15 portions of PEDOT/PSS aqueous dispersion stock solution, 0.5 portion of KH 560 coupling agent, 0.15 portion of organic silicon wetting and leveling agent, 0.15 portion of polyether defoaming agent and 5 portions of deionized water are gradually and sequentially added in a dropwise manner, the stirring speed is increased to 400r/min, the stirring is continuously carried out until the uniform stirring is achieved, and after the reaction is finished, the antistatic coating liquid is obtained.
And (3) dropwise adding a small amount of PEDOT/PSS coating liquid (the antistatic coating liquid of the comparative example) on the PET base film, rolling by using a No. 2 linear coating rod to form a film, then putting the film into a baking oven preheated to 110 ℃, drying for 1 minute, and forming a film at a high temperature to obtain the PEDOT/PSS antistatic coating for preventing the static electricity of the electronic element.
The resistance of the obtained PEDOT/PSS antistatic coating was measured with a MODEL-100 resistance tester.
As shown by tests, the surface resistance value of the PEDOT/PSS antistatic coating obtained by the comparative example is 107～108Omega, and the surface of the film is uniform and transparent without atomization phenomenon.
The PEDOT/PSS antistatic coating obtained by the comparative example is subjected to an alcohol washing resistance test, and the specific test method comprises the following steps: the surface of the film-forming substrate was soaked with absorbent cotton in ethanol, wiped continuously 200 times or more, placed again in the oven under the above conditions and dried for 30 seconds, and then the surface resistance of the film was measured with a MODEL-100 resistance tester.
Tests show that the surface resistance value of the PEDOT/PSS antistatic coating obtained by the comparative example after alcohol washing treatment exceeds 1011Omega, and the film surface has scratch and fog phenomena.
After the coating, the coating film was heated in an oven at 110 ℃ for 20 minutes, and the surface resistance of the film was measured to be 10 after curing and film formation6～107Omega, the film surface is uniform and transparent without atomization. After the film is washed with alcohol and wiped for 200 times and dried for 0.5 minute, the surface resistance value of the film is 107～108Omega, no scratch and fogging phenomena.
Comparative example 2
The antistatic coating liquid is prepared by the following method:
according to the weight portion, 6 portions of commercial water-based polycarbonate polyurethane resin is taken, 0.25 portion of N, N-dimethylethanolamine is added, then 3.5 portions of dimethyl sulfoxide, 5 portions of PEDOT/PSS aqueous dispersion stock solution, 0.5 portion of KH 560 coupling agent, 0.16 portion of organic silicon wetting and leveling agent, 0.16 portion of polyether defoaming agent and 6 portions of deionized water are gradually and sequentially added in a dropwise manner, the stirring speed is increased to 400r/min, the stirring is continuously carried out until the uniform stirring is realized, and after the reaction is finished, the antistatic coating liquid is obtained.
And (3) dropwise adding a small amount of PEDOT/PSS coating liquid (the antistatic coating liquid of the comparative example) on the PET base film, rolling by using a No. 2 linear coating rod to form a film, then putting the film into a baking oven preheated to 120 ℃, drying for 1 minute, and forming a film at a high temperature to obtain the PEDOT/PSS antistatic coating for preventing the static electricity of the electronic element.
The resistance of the obtained PEDOT/PSS antistatic coating was measured with a MODEL-100 resistance tester.
As shown by tests, the surface resistance value of the PEDOT/PSS antistatic coating obtained by the comparative example is 106～107Omega, and the surface of the film is uniform and transparent without atomization phenomenon.
The PEDOT/PSS antistatic coating obtained by the comparative example is subjected to an alcohol washing resistance test, and the specific test method comprises the following steps: the surface of the film-forming substrate was soaked with absorbent cotton in ethanol, wiped continuously 200 times or more, placed again in the oven under the above conditions and dried for 30 seconds, and then the surface resistance of the film was measured with a MODEL-100 resistance tester.
Tests show that the surface resistance value of the PEDOT/PSS antistatic coating obtained by the comparative example after alcohol washing treatment exceeds 1010Omega, and the film surface has scratch and fog phenomena.
After the coating, the coating film was heated in an oven at 120 ℃ for 15 minutes, and the surface resistance of the film was measured to be 10 after curing and film formation5～106Omega, the film surface is uniform and transparent without atomization. After the film is washed with alcohol and wiped for 200 times and dried for 0.5 minute, the surface resistance value of the film is 106～107Omega, no scratch and fogging phenomena.
Comparative example 3
The antistatic coating liquid is prepared by the following method:
according to the weight portion, 4 portions of commercial water-based polycarbonate polyurethane resin and 2 portions of matrix resin prepared in the embodiment 1 are taken, 0.5 portion of 5M ammonia water is added, then 5.0 portions of dimethyl sulfoxide, 15 portions of PEDOT/PSS aqueous dispersion stock solution, 0.5 portion of KH 560 coupling agent, 0.15 portion of organic silicon wetting and leveling agent, 0.15 portion of polyether defoaming agent and 5 portions of deionized water are gradually and sequentially dripped, the stirring speed is accelerated to 400r/min, the stirring is continuously carried out until the uniform stirring is achieved, and after the reaction is finished, the antistatic coating liquid is obtained.
And (3) dropwise adding a small amount of PEDOT/PSS coating liquid (the antistatic coating liquid of the comparative example) on the PET base film, rolling by using a No. 2 linear coating rod to form a film, then putting the film into a baking oven preheated to 140 ℃, drying for 1 minute, and forming a film at a high temperature to obtain the PEDOT/PSS antistatic coating for preventing the static electricity of the electronic element.
The resistance of the obtained PEDOT/PSS antistatic coating was measured with a MODEL-100 resistance tester.
As shown by tests, the surface resistance value of the PEDOT/PSS antistatic coating obtained by the comparative example is 106～107Omega, and the surface of the film is uniform and transparent without atomization phenomenon.
The PEDOT/PSS antistatic coating obtained by the comparative example is subjected to an alcohol washing resistance test, and the specific test method comprises the following steps: the surface of the film-forming substrate was soaked with absorbent cotton in ethanol, wiped continuously 200 times or more, placed again in the oven under the above conditions and dried for 30 seconds, and then the surface resistance of the film was measured with a MODEL-100 resistance tester.
Tests show that the surface resistance value of the PEDOT/PSS antistatic coating obtained by the comparative example after alcohol washing treatment exceeds 1010Omega, and the film surface has scratch and fog phenomena.
After the coating, the coating film was heated in an oven at 140 ℃ for 10 minutes, and the surface resistance of the film was measured to be 10 after curing and film formation6～107Omega, the film surface is uniform and transparent without atomization. After the film is washed with alcohol and wiped for 200 times and dried for 0.5 minute, the surface resistance value of the film is 107～108Omega, no scratch and fogging phenomena.
It should be noted that the stock solutions of aqueous PEDOT/PSS dispersions used in the examples and comparative examples according to the invention have a solids content of 0.5-5% and a pH value of 6-10 at 25 ℃.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The antistatic coating liquid is characterized by comprising the following components in parts by weight: stock solutions of aqueous PEDOT/PSS dispersions: 5-75 parts of a pH value regulator: 0.05-0.75 part of conductive additive: 1-8 parts of matrix resin: 5-15 parts of coupling agent: 0.05-0.5 part of deionized water: 1-20 parts of wetting and leveling agent: 0.05-0.5 part of defoaming agent: 0.05-0.5 part;
the matrix resin is prepared by the following method: mixing 1-10 parts of dehydrated polycarbonate diol, 0.1-5 parts of polytetrahydrofuran and 2-25 parts of aromatic diisocyanate, heating to 65-85 ℃, adding 1-10 parts of dimethylolpropionic acid and 0.1-5 parts of epoxy resin, reacting for 1-3 hours, adding 0.1-2 parts of propylene glycol, 0.1-3 parts of trimethylolpropane and 0.5-5 parts of acetone, reacting at 60-80 ℃, cooling to 50-70 ℃ to obtain a prepolymer; and adding 0.1-2 parts of triethylamine and 5-50 parts of water into the prepolymer, stirring for 30-50 minutes to obtain a white emulsion, adding 0.1-1 part of nano particles, stirring for 1-3 hours, and removing the solvent to obtain the matrix resin.
2. The antistatic coating liquid as claimed in claim 1, wherein the stock solution of aqueous PEDOT/PSS dispersion has a solid content of 0.5 to 5% and a pH value at 25 ℃ of 6 to 10.
3. The antistatic coating liquid according to claim 1, wherein the pH adjuster is one or more selected from diethanolamine, triethanolamine, ethylenediamine, N-dimethylethanolamine, N-diethylethanolamine, aqueous ammonia, sodium hydroxide and potassium hydroxide.
4. The antistatic coating liquid according to claim 1, wherein the conductive auxiliary is one or two of ethylene glycol, glycerol, dimethyl sulfoxide and N-methylpyrrolidone.
5. The antistatic coating liquid of claim 1, wherein the nanoparticles are one or more of carbon nanotubes, graphene, calcium carbonate, silica and titanium dioxide.
6. The antistatic coating liquid according to claim 1, wherein the wetting and leveling agent is one or more of silicone-based, nonionic-based, and acrylic surface control agents.
7. The antistatic coating liquid according to claim 1, wherein the defoaming agent is one or more of silicone defoaming agent, nonionic defoaming agent and polyether defoaming agent.
8. The method for preparing an antistatic coating liquid according to any one of claims 1 to 7, characterized by comprising the steps of:
and mixing and stirring the PEDOT/PSS aqueous dispersion stock solution, the pH value regulator, the conductive auxiliary agent, the matrix resin, the coupling agent, the deionized water, the wetting and leveling agent and the defoaming agent to obtain the antistatic coating liquid.
9. The method for preparing an antistatic coating liquid according to claim 8, wherein the stirring rate of the mixing and stirring is 100-500 rpm, and the stirring time is 1-24 hours.
10. Use of the antistatic coating liquid according to any one of claims 1 to 7 in the antistatic industry, characterized by comprising the following steps:
coating the antistatic coating liquid on a substrate by a wire rod, and drying at the temperature of 100-140 ℃ for 0.5-1 min to obtain an antistatic PEDOT/PSS coating;
the base material is one or more of PET, PE and glass.
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