CN117126443A - antistatic polyester film - Google Patents
antistatic polyester film Download PDFInfo
- Publication number
- CN117126443A CN117126443A CN202210846563.7A CN202210846563A CN117126443A CN 117126443 A CN117126443 A CN 117126443A CN 202210846563 A CN202210846563 A CN 202210846563A CN 117126443 A CN117126443 A CN 117126443A
- Authority
- CN
- China
- Prior art keywords
- polyester film
- antistatic
- antistatic polyester
- surface resistance
- less
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 229920006267 polyester film Polymers 0.000 title claims abstract description 72
- 238000000576 coating method Methods 0.000 claims abstract description 37
- 239000011248 coating agent Substances 0.000 claims abstract description 35
- 229920005989 resin Polymers 0.000 claims abstract description 32
- 239000011347 resin Substances 0.000 claims abstract description 32
- 239000002904 solvent Substances 0.000 claims abstract description 32
- 239000011230 binding agent Substances 0.000 claims abstract description 26
- 229920000728 polyester Polymers 0.000 claims abstract description 25
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 229920001940 conductive polymer Polymers 0.000 claims abstract description 23
- 239000002952 polymeric resin Substances 0.000 claims abstract description 19
- 239000003431 cross linking reagent Substances 0.000 claims description 23
- 230000008859 change Effects 0.000 claims description 21
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 15
- 239000004971 Cross linker Substances 0.000 claims description 14
- 239000006185 dispersion Substances 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 229920000123 polythiophene Polymers 0.000 claims description 10
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 9
- 229920000447 polyanionic polymer Polymers 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 7
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 6
- 125000000129 anionic group Chemical group 0.000 claims description 6
- 229920000570 polyether Polymers 0.000 claims description 6
- 229920003009 polyurethane dispersion Polymers 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 125000000524 functional group Chemical group 0.000 claims description 5
- 229920000877 Melamine resin Polymers 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 4
- 229920001225 polyester resin Polymers 0.000 claims description 4
- IMSODMZESSGVBE-UHFFFAOYSA-N 2-Oxazoline Chemical compound C1CN=CO1 IMSODMZESSGVBE-UHFFFAOYSA-N 0.000 claims description 3
- 229920000178 Acrylic resin Polymers 0.000 claims description 3
- 239000004925 Acrylic resin Substances 0.000 claims description 3
- 239000004593 Epoxy Substances 0.000 claims description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 3
- 229920006243 acrylic copolymer Polymers 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 3
- QHIWVLPBUQWDMQ-UHFFFAOYSA-N butyl prop-2-enoate;methyl 2-methylprop-2-enoate;prop-2-enoic acid Chemical compound OC(=O)C=C.COC(=O)C(C)=C.CCCCOC(=O)C=C QHIWVLPBUQWDMQ-UHFFFAOYSA-N 0.000 claims description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 3
- 125000003277 amino group Chemical group 0.000 claims description 2
- VPKDCDLSJZCGKE-UHFFFAOYSA-N carbodiimide group Chemical group N=C=N VPKDCDLSJZCGKE-UHFFFAOYSA-N 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract description 9
- 230000003068 static effect Effects 0.000 abstract description 9
- 239000000428 dust Substances 0.000 abstract description 5
- 238000001179 sorption measurement Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 31
- 230000000052 comparative effect Effects 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000002253 acid Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 6
- -1 polyethylene terephthalate Polymers 0.000 description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 5
- 229920005749 polyurethane resin Polymers 0.000 description 5
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 4
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 2
- FJKROLUGYXJWQN-UHFFFAOYSA-N 4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- VVJKKWFAADXIJK-UHFFFAOYSA-N Allylamine Chemical compound NCC=C VVJKKWFAADXIJK-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 150000001718 carbodiimides Chemical class 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012776 electronic material Substances 0.000 description 2
- UYMKPFRHYYNDTL-UHFFFAOYSA-N ethenamine Chemical compound NC=C UYMKPFRHYYNDTL-UHFFFAOYSA-N 0.000 description 2
- 239000010954 inorganic particle Substances 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical compound C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 description 2
- 229940005642 polystyrene sulfonic acid Drugs 0.000 description 2
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- RHRRUYIZUBAQTQ-UHFFFAOYSA-N 2,5,8,11-tetramethyldodec-6-yne-5,8-diol Chemical compound CC(C)CCC(C)(O)C#CC(C)(O)CCC(C)C RHRRUYIZUBAQTQ-UHFFFAOYSA-N 0.000 description 1
- SJIXRGNQPBQWMK-UHFFFAOYSA-N 2-(diethylamino)ethyl 2-methylprop-2-enoate Chemical compound CCN(CC)CCOC(=O)C(C)=C SJIXRGNQPBQWMK-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 1
- UOBYKYZJUGYBDK-UHFFFAOYSA-N 2-naphthoic acid Chemical compound C1=CC=CC2=CC(C(=O)O)=CC=C21 UOBYKYZJUGYBDK-UHFFFAOYSA-N 0.000 description 1
- KGIGUEBEKRSTEW-UHFFFAOYSA-N 2-vinylpyridine Chemical compound C=CC1=CC=CC=N1 KGIGUEBEKRSTEW-UHFFFAOYSA-N 0.000 description 1
- 229940090248 4-hydroxybenzoic acid Drugs 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229920001634 Copolyester Polymers 0.000 description 1
- 229920002845 Poly(methacrylic acid) Polymers 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- NJSSICCENMLTKO-HRCBOCMUSA-N [(1r,2s,4r,5r)-3-hydroxy-4-(4-methylphenyl)sulfonyloxy-6,8-dioxabicyclo[3.2.1]octan-2-yl] 4-methylbenzenesulfonate Chemical compound C1=CC(C)=CC=C1S(=O)(=O)O[C@H]1C(O)[C@@H](OS(=O)(=O)C=2C=CC(C)=CC=2)[C@@H]2OC[C@H]1O2 NJSSICCENMLTKO-HRCBOCMUSA-N 0.000 description 1
- YIMQCDZDWXUDCA-UHFFFAOYSA-N [4-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1CCC(CO)CC1 YIMQCDZDWXUDCA-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920001444 polymaleic acid Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000008279 sol Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-N sulfonic acid Chemical compound OS(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-N 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- GXQFALJDHPPWKR-UHFFFAOYSA-L trimethyl-[2-(2-methylprop-2-enoyloxy)ethyl]azanium;sulfate Chemical compound [O-]S([O-])(=O)=O.CC(=C)C(=O)OCC[N+](C)(C)C.CC(=C)C(=O)OCC[N+](C)(C)C GXQFALJDHPPWKR-UHFFFAOYSA-L 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/044—Forming conductive coatings; Forming coatings having anti-static properties
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/0427—Coating with only one layer of a composition containing a polymer binder
-
- 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
- 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
-
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/24—Electrically-conducting paints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2425/00—Characterised by the use of 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; Derivatives of such polymers
- C08J2425/18—Homopolymers or copolymers of aromatic monomers containing elements other than carbon and hydrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2465/00—Characterised by the use of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Laminated Bodies (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
Abstract
The present disclosure relates to antistatic polyester films. An antistatic polyester film according to one embodiment of the present disclosure includes a polyester substrate and an antistatic layer positioned on at least one surface of the polyester substrate and formed by curing a coating solution including a conductive polymer resin and a binder resin, and having a temperature of greater than 10 at 25 DEG C 4 Omega/sq and less than 10 7 Surface resistance of Ω/sq. Weather resistance and solvent resistance of antistatic polyester filmExcellent in performance and good in appearance quality. In addition, the antistatic polyester film suppresses the occurrence of foreign substances caused by dust adsorption and circuits due to static electricity, thereby improving productivity of products.
Description
Technical Field
The following description relates to an antistatic polyester film, and more particularly, to an antistatic polyester film having an antistatic function and excellent weather resistance and solvent resistance.
Background
In general, polyester films have excellent dimensional stability, thickness uniformity, and optical transparency, and thus find use in various industries such as the electric/electronic industry, the display industry, and the automotive industry. Polyester films have a wide range of uses from equipment to a variety of industrial materials.
However, although the polyester film has excellent physical properties, it has a disadvantage in that the film surface has very high resistance and thus is easily charged when friction is applied. In this case, an electrical short circuit is applied to the film surface by static electricity, which may cause occurrence of defects or cause foreign substances such as dust to adhere to the film surface, resulting in product defects. In addition, when a chemical material such as an organic solvent is used in the manufacturing process of a product using a polyester film, a fire may occur due to an electrical short during the manufacturing process or the processing process.
In order to overcome these problems, research into antistatic polyester films having improved antistatic functions has been actively conducted. In general, in an antistatic film having an antistatic function, an antistatic layer prevents the film from being charged.
Recently, with the development of the display industry and the trend of rapid increase in demand for antistatic films, various antistatic type products have been introduced. The most commonly used type of antistatic is the low cost cationic antistatic type. With the expansion of the high quality film market, the demand for antistatic polyester films using conductive polymers has increased.
Conductive polymers are widely used for antistatic polyester films due to their excellent transparency and antistatic properties. An optically biaxially stretched polyester film used in flexible or foldable displays, which has been rapidly deployed in recent years, may have linear defects in a specific region due to folding or bending, and thus may damage a coating film, resulting in deterioration or loss of antistatic properties.
In order to solve the conventional problems of quality and yield degradation due to deterioration of antistatic properties of an in-line antistatic coating layer caused by bending, an antistatic polyester film having excellent weatherability and solvent resistance is produced through an in-line coating process by an antistatic layer formed of a coating solution in which the ratio of a binder resin and a crosslinking agent is adjusted.
[ Prior Art literature ]
[ patent literature ]
(patent document 0001) Korean patent laid-open No. 10-0948904
Disclosure of Invention
Technical problem
An object of the present disclosure is to provide an antistatic polyester film having excellent weather resistance and solvent resistance by providing a coating layer having antistatic properties and not being easily degraded with time, and thus electrical short circuit and dust adsorption caused by static electricity can be effectively prevented.
The foregoing and other objects and advantages of the invention will become apparent to those skilled in the art upon a reading of the following description of the preferred embodiments of the invention, by way of example.
Technical proposal
The above object is achieved by an antistatic polyester film comprising a polyester substrate and an antistatic layer positioned on at least one surface of the polyester substrate and formed by curing a coating solution comprising a conductive polymer resin, a binder resin, and a crosslinking agent, wherein the weight ratio of the binder resin to the crosslinking agent in terms of solid content is greater than 1:1 and less than 1:5.
Preferably, the weight ratio of the binder resin to the solids content of the crosslinking agent may be in the range of 1:2 to 1:4.
Preferably, the total content of the binder resin and the crosslinking agent may be 50 to 90 wt% based on the total weight of the coating solution.
Preferably, the binder resin may include at least one selected from urethane-based resins, polyester-based resins, acrylic resins, and copolymers thereof.
Preferably, the binder resin may be of a water-dispersible type, and may be a resin composed of an anionic polyether polyurethane dispersion containing at least one functional group selected from hydroxyl groups, amine groups, alkyl groups, and carboxyl groups.
Preferably, the cross-linking agent may be selected from carbodiimide-based cross-linking agents, based onAt least one of an oxazoline-based crosslinker, an epoxy-based crosslinker, and a melamine-based crosslinker.
Preferably, the thickness of the polyester substrate may be in the range of 25 μm to 250 μm.
Preferably, the conductive polymer resin may include an aqueous dispersion containing a polyanion and a polythiophene or an aqueous dispersion containing a polyanion and a polythiophene derivative.
Preferably, the antistatic polyester film may have a resistance of greater than 10 at 25 DEG C 4 Omega/sq and less than 10 7 Surface resistance of Ω/sq.
Preferably, the antistatic polyester film may have a resistance of greater than 10 after being left at 60 ℃ for 840 hours 4 Omega/sq and less than 10 7 Surface resistance of Ω/sq.
Preferably, the antistatic polyester film may have a resistance of greater than 10 after being left at-10 ℃ for 840 hours 4 Omega/sq and less than 10 7 Surface resistance of Ω/sq.
Preferably, the antistatic polyester film may have a change in surface resistance of less than 10 Ω/sq before and after being left at 60 ℃ for 840 hours.
Preferably, the antistatic polyester film may have a change in surface resistance of less than 10 Ω/sq before and after 840 hours of standing at-10 ℃.
Preferably, the surface resistance after ten reciprocal rubs of the surface of the antistatic layer with a solvent-impregnated non-fluffing wipe (line-free wipe) under a load of 1kg may be greater than 10 6 Omega/sq and less than 10 9 Omega/sq antistatic layer surface under 1kg load with solvent impregnated non-fluffing wipeThe change in surface resistance before and after ten times of reciprocating friction may be 10 2 Omega/sq or less, and the solvent may include at least one selected from the group consisting of ethanol, methyl ethyl ketone, toluene, and ethyl acetate.
Preferably, the antistatic polyester film may be produced via an in-line process.
Preferably, the average particle diameter of the conductive polymer resin may be 10nm to 60nm.
Advantageous effects
The antistatic polyester film according to one embodiment of the present disclosure may effectively prevent the adsorption of nearby dust and the generation of static electricity.
Further, the antistatic polyester film according to one embodiment of the present disclosure is excellent in weather resistance and solvent resistance, and thus has little change in surface resistance due to solvent or physical impact such as folding or bending.
Because of these characteristics, the antistatic polyester film according to one embodiment of the present disclosure can maintain excellent antistatic properties even when used in flexible or foldable displays.
Those skilled in the art will appreciate that the effects that can be achieved by the present invention are not limited to those that have been particularly described hereinabove, and other advantages of the present invention will be more clearly understood from the following detailed description.
Drawings
Fig. 1 is a diagram of an antistatic polyester film according to one embodiment of the present disclosure.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so as to be easily implemented by those of ordinary skill in the art. It is to be understood that the invention is not to be construed as limited to the embodiments set forth herein but may be embodied in many different forms.
In the drawings, the thickness of layers and regions are exaggerated for clarity. Like numbers refer to like elements throughout. It will be understood that when an element such as a layer, film, region or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. In case of conflict, the present specification, including definitions, will control. In addition, although methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention, suitable methods and materials are described herein.
Fig. 1 is a diagram of an antistatic polyester film according to one embodiment of the present disclosure.
Referring to fig. 1, an antistatic polyester film according to one embodiment of the present disclosure includes a polyester substrate 110 and an antistatic layer 120. In the example shown in fig. 1, the antistatic layer 120 is formed on only one surface of the polyester substrate 110. However, the antistatic layer 120 may also be positioned on the other surface of the polyester substrate 110, thereby realizing an antistatic polyester film in which the antistatic layer 120 is formed on both surfaces of the polyester substrate 110.
Polyester substrate 110
The polyester film constituting the polyester substrate 110 is not limited to a specific type, and a known conventional polyester film may be used as a base film for an antistatic coating. In the present disclosure, exemplary polyester films are polyester resins such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, and the like, but the polyester films of the present disclosure are not limited thereto.
As an example, the polyester substrate 110 may be obtained by polycondensing an aromatic dicarboxylic acid and an aliphatic diol. Examples of the aromatic dicarboxylic acid may include terephthalic acid, 2, 6-naphthalene dicarboxylic acid, and the like. Examples of other dicarboxylic acid components of the copolyester may include isophthalic acid, phthalic acid, terephthalic acid, 2, 6-naphthalene dicarboxylic acid, adipic acid, sebacic acid, hydroxycarboxylic acid (oxycarboxylic acid) (e.g., parahydroxybenzoic acid), and the like. Examples of aliphatic diols may include ethylene glycol, diethylene glycol, 1, 4-cyclohexanedimethanol, propylene glycol, butylene glycol, neopentyl glycol, and the like. The dicarboxylic acid component and the diol component may be used in combination of two or more thereof. Representative polyesters may include polyethylene terephthalate (PET), polyethylene-2, 6-naphthalate (PEN), and the like. The polyester may be a copolymer comprising a third component.
In addition, the thickness of the polyester substrate 110 is preferably 25 μm to 250 μm.
Antistatic layer 120
The antistatic layer 120 may be formed on at least one surface of the polyester substrate 110. In the example shown in fig. 1, the antistatic layer 120 is formed on only one surface of the polyester substrate 110. However, the antistatic layer 120 may also be positioned on the other surface of the polyester substrate 110, thereby realizing an antistatic polyester film in which the antistatic layer 120 is formed on both surfaces of the polyester substrate 110.
The antistatic layer 120 includes a conductive polymer resin and a binder resin, and is formed by curing a coating solution including a crosslinking agent. The conductive polymer resin is provided to achieve antistatic properties. The composition thereof will be described in detail below.
Conductive polymer resin
The conductive polymer resin contained in the coating solution (antistatic coating solution) forming the antistatic layer 120 is preferably an aqueous dispersion containing a polyanion and a polythiophene or an aqueous dispersion containing a polyanion and a polythiophene derivative to obtain excellent antistatic properties. Here, the polyanion is an acidic polymer, and is also polycarboxylic acid, polysulfonic acid, polyvinylsulfonic acid, or the like. Examples of polycarboxylic acids include polyacrylic acid, polymethacrylic acid, polymaleic acid, and the like. Examples of the polysulfonic acid include polystyrene sulfonic acid and the like.
Preferably, in the conductive copolymer resin used in the present disclosure, the polyanion is present in an excessive amount of solid content weight ratio with respect to the polythiophene or the polythiophene derivative, thereby achieving conductivity. For example, when using 1 wt% of polythiophene or polythiophene derivative, the polyanion is present in an amount preferably greater than 1 wt% and less than or equal to 5 wt%, more preferably from 1 wt% to 3 wt%. As an example, in the examples of the present disclosure to be described below, an aqueous dispersion containing 0.5 wt% of poly (3, 4-ethylenedioxythiophene) and 0.8 wt% of polystyrene sulfonic acid (molecular weight mn=150,000) is used, but is not limited thereto.
Further, the average particle diameter of the conductive polymer resin is preferably 10nm to 60nm, more preferably 20nm to 50nm. The conductive polymer resin particles are distributed in the above particle size, and thus exhibit stable antistatic properties. When the average particle diameter of the conductive polymer resin exceeds 60nm, the variation in surface resistance at each position after transverse stretching is greatly increased, and thus the durability of the antistatic property is remarkably reduced. The particle size of the conductive polymer resin used in the present disclosure is 20% or less smaller than that of the conventional conductive polymer resin, and thus the conventional conductive polymer resin may be used without limitation by any known method capable of physically reducing the particle size, and commercially available products satisfying the above-described particle size conditions may be used.
Binder resin
The binder resin included in the coating solution (antistatic coating solution) forming the antistatic layer 120 preferably includes at least one selected from urethane-based resins, polyester-based resins, acrylic resins, and copolymers thereof, more preferably polyurethane resins.
The polyurethane resin contained in the coating solution (antistatic solution) of the present disclosure is added to improve the peel strength between the film surface and the adhesive tape when applied to the polyester film. Preferred polyurethane resins for use in the present disclosure are of the water-dispersible type, more preferably resins composed of anionic polyether polyurethane dispersions containing at least one functional group selected from hydroxyl, amine, alkyl, carboxyl, and the like.
More specifically, the water-dispersible polyurethane resin includes: an anionic polyether polyurethane dispersion containing hydroxyl groups; an anionic polyether polyurethane dispersion containing functional groups of repeating units selected from the group consisting of: allylamine, vinylamine, ethyleneamine, vinylpyridine, diethylaminoethyl methacrylate, diallyldimethylammonium chloride, methacryloxyethyl trimethylammonium sulfate, and combinations thereof; or an anionic polyether polyurethane dispersion containing functional groups of repeating units selected from the group consisting of: methyl, ethyl, propyl, butyl, pentyl, hexyl, and combinations thereof.
Crosslinking agent
The crosslinking agent contained in the coating solution (antistatic coating solution) forming the antistatic layer 120 is used to control the crosslinking density to improve durability and coating characteristics of the antistatic layer 120 and the polyester substrate 110. In this case, as a preferred crosslinker component, it preferably comprises a crosslinker selected from carbodiimide-based crosslinkers, based onAt least one of an oxazoline-based crosslinking agent, an epoxy-based crosslinking agent, and a melamine-based crosslinking agent.
The total content of the binder resin and the crosslinking agent described above is preferably 50 to 90% by weight of the total weight of the coating solution (antistatic coating solution) forming the antistatic layer 120. In this case, when the total content of the binder resin and the crosslinking agent is less than 50 wt%, the adhesive strength of the resin to the antistatic layer 120 is lowered, so that a sufficient function cannot be provided. When the total content exceeds 90% by weight, sufficient tape peel strength is obtained, but antistatic properties are deteriorated.
Further, in the coating solution forming the antistatic layer 120, the weight ratio of the binder resin to the solid content of the crosslinking agent is preferably more than 1:1 and less than 1:5, more preferably in the range of 1:2 to 1:4. At this time, when the weight ratio of the binder resin to the crosslinking agent is 1:1 or less, the crosslinking degree of the binder is insufficient, resulting in insufficient adhesive strength and blocking (blocking). Poor coating appearance occurs when the weight ratio of binder resin to crosslinker is 1:5 or greater.
Solvent(s)
In the coating solution for forming the antistatic layer 120, the solvent for the above-described conductive polymer resin, binder resin, and crosslinking agent is a water-based coating solvent having water as a main medium. Further, the coating solution may contain an organic solvent in an appropriate amount that does not impair any of the characteristics and features of the present disclosure for the purpose of improving coatability, transparency, and the like. Examples of preferred organic solvents may include isopropanol, butyl cellosolve, t-butyl cellosolve, ethyl cellosolve, acetone, ethanol, methanol, and the like. However, if the antistatic coating solution contains an excessive amount of organic solvent, there is a risk of explosion of the antistatic coating solution during the drying process, the stretching process, and the thermal process when using the in-line coating. Therefore, the content of the organic solvent in the antistatic coating solution is preferably 10% by weight or less, more preferably 5% by weight or less.
Additive agent
In one embodiment of the present disclosure, various additives may be included in addition to the conductive polymer resin, the binder resin, and the crosslinking agent within a range that does not impair the characteristics and features of the present disclosure (specifically, optical characteristics, antistatic characteristics, etc.). For example, the antistatic layer may be combined with a surfactant, a solvent, an antioxidant, a heat stabilizer, a weather stabilizer, an ultraviolet absorber, an organic lubricant, a pigment, a dye, organic or inorganic fine particles, a filler, a nucleating agent, or the like. In particular, it is more preferable to add inorganic particles to the antistatic layer 120 because running characteristics and anti-blocking property are improved. In this case, as the inorganic particles to be added, silica gel, alumina sol, kaolin, talc, mica, calcium carbonate, or the like can be used.
In the present disclosure, the antistatic polyester film is preferably produced via an in-line process. More specifically, preferably, the antistatic polyester film may be manufactured by: the antistatic coating layer 120 is formed by applying the above-described solution to the substrate 110 uniaxially stretched to 3 to 5 times its length in the MD direction (the traveling direction of the film), and then stretching the resulting substrate to 3 to 5 times its length in the TD direction (the direction perpendicular to the traveling direction of the film).
An antistatic polyester film according to one embodiment of the present disclosure has a polyester film having a polyester film weight ratio of preferably greater than 10 4 Omega/sq and less than 10 7 Surface resistance of Ω/sq.
Furthermore, the antistatic polyester film according to one embodiment of the present disclosure has preferably more than 10 after being left at 60 ℃ for 840 hours and after being left at-10 ℃ for 840 hours 4 Omega/sq and less than 10 7 Surface resistance of Ω/sq.
Furthermore, the antistatic polyester film according to one embodiment of the present disclosure preferably has a change in surface resistance of less than 10 Ω/sq before and after being left at 60 ℃ for 840 hours and before and after being left at-10 ℃ for 840 hours.
At this time, the change in the surface resistance before and after the placement under each condition is calculated by the following equation 1.
(equation 1)
Surface resistance change before and after placement = surface resistance after placement/surface resistance before placement
The antistatic polyester film according to one embodiment of the present disclosure may have a surface resistance of more than 10 after ten times of reciprocating rubbing of the surface of the antistatic layer with the solvent-impregnated non-fluffing wipe under a load of 1kg 6 Omega/sq and less than 10 9 Omega/sq. The solvent may include at least one selected from ethanol, methyl ethyl ketone, toluene, and ethyl acetate.
The change in surface resistance before and after the above solvent treatment is preferably 10 2 Omega/sq or less. At this time, the change in surface resistance before and after the solvent treatment is calculated by the following equation 2.
(equation 2)
Change in surface resistance before and after solvent treatment = surface resistance after solvent treatment/surface resistance before solvent treatment
The antistatic film has weather resistance and solvent resistance due to the surface resistance, the change of the surface resistance with time, and the change of the surface resistance according to the solvent treatment described above. In an electronic material such as an Organic Light Emitting Diode (OLED) using an antistatic film, static electricity causes fatal defects in the electronic material, and thus the antistatic film is used to prevent such defects. In other words, when the antistatic film according to one embodiment of the present disclosure does not have the above-described physical properties, weather resistance and solvent resistance are deteriorated, causing reliability problems due to the occurrence of static electricity, ultimately resulting in product defects. Accordingly, an antistatic film is provided to overcome such problems.
Hereinafter, the present disclosure will be described in more detail with reference to examples. The following examples are provided to further illustrate the present disclosure and are not intended to limit the scope of the present disclosure.
Examples (example)
Examples 1 to 3
1) Preparation of the coating solution
An aqueous binder resin dispersion comprising 70% by weight of water and 30% by weight of a polyurethane resin (AP-50 RI manufactured by DIC company) and an aqueous crosslinking agent dispersion comprising 20% by weight of water and 80% by weight of a melamine-based crosslinking agent (PM 80 manufactured by DIC company) were mixed in the ratios described in Table 1 below (50% by weight based on the total weight of the coating solution). Mixing the thus constituted mixture with an aqueous dispersion of a conductive polymer, comprising 90% by weight of water and 10% by weight of an aqueous dispersion of a conductive polymer comprising 0.5% by weight of poly (3, 4-ethylenedioxythiophene) and 0.8% by weight of polystyrene sulphonic acid (molecular weight mn=150,000); an aqueous surfactant dispersion comprising 90% by weight of water and 10% by weight of anionic surfactant (2, 5,8, 11-tetramethyl-6-dodecyne-5, 8-diol ethoxylate); and the remaining water were mixed in the ratios and contents described in table 1 below, thereby preparing a coating solution. At this time, the solid content concentration of the final coating solution was 2%.
2) Antistatic polyester film
The polyethylene terephthalate raw material chips were melt extruded and then formed into unstretched sheets using a casting roll. Thereafter, the sheet was stretched to 3.5 times its length in the MD direction to prepare a uniaxially stretched sheet. The above coating solution was applied to the uniaxially stretched sheet using metal bar #4, followed by drying at 150 ℃ to form an antistatic layer. Then, the sheet on which the coating solution was dried was stretched to 3.8 times its length in the TD direction, thereby preparing a biaxially stretched antistatic polyester film.
Comparative example
Comparative examples 1 to 4
An antistatic polyester film was prepared in the same manner as in example 1, except that the ratio and content in the coating solution were changed as shown in table 1 below.
TABLE 1
For the antistatic polyester films prepared in examples 1 to 3 and comparative examples 1 to 4, physical properties were evaluated by the following experimental examples, and the results are shown in tables 2 and 3.
Experimental example
(1) Measurement of surface resistance
A4-sized film was sampled from each of the films produced according to examples and comparative examples, and the surface resistance was measured from the coated surface of each of the sampled films using a surface resistance measuring device (model 800 manufactured by ACL, terminal method). The measured surface resistance was set as the initial surface resistance.
(2) Treatment under severe conditions
The A4-sized films sampled from the films produced according to examples and comparative examples were left at 60 ℃ for 840 hours using a hot air oven, and then the surface resistance was measured in the same manner as in example 1.
Further, A4-sized films sampled from the films produced according to examples and comparative examples were left at-10 ℃ for 840 hours using a thermal shock tester, and then the surface resistance was measured in the same manner as in example 1.
(3) Solvent resistance treatment
The film surface was treated by reciprocally rubbing ten times the surface of the antistatic layer of each of the films produced according to examples and comparative examples with a non-fluffing wiper impregnated with Methyl Ethyl Ketone (MEK) under a load of 1kg, and then its surface resistance was measured in the same manner as in example 1.
As described above, the initial surface resistance, the surface resistance after the treatment under severe conditions, and the measurement results of the surface resistance after the solvent treatment are summarized in table 2. Further, the changes in surface resistance according to the severe conditions and solvent resistance treatment are summarized in table 3.
TABLE 2
TABLE 3
The change in the surface resistance shown in table 3 is a value calculated by the above-described equations 1 and 2.
It can be seen that examples 1 to 3 according to the present disclosure all satisfy a surface resistance of more than 10 at 25 °c 4 Omega/sq and less than 10 7 Omega/sq, surface resistance after 840 hours at 60 ℃ is greater than 10 4 Omega/sq and less than 10 7 Omega/sq and a surface resistance of greater than 10 after 840 hours of standing at-10 DEG C 4 Omega/sq and less than 10 7 Omega/sq. Furthermore, all examples 1 to 3 satisfy a surface resistance of more than 10 after solvent resistance treatment 6 Omega/sq and less than 10 9 Omega/sq. Furthermore, it can be seen that in examples 1 to 3, the change in surface resistance with time was less than 10Ω/sq, and the change in surface resistance before and after the solvent resistance treatment was 10 2 Omega/sq or less.
In contrast, it can be seen that in comparative examples 1 and 3, the initial surface resistance, the surface resistance after left at 60 ℃ for 840 hours, and the surface resistance after left at-10 ℃ for 840 hours, and the surface resistance after solvent treatment were excessively high, and the change in the surface resistance with time and the change in the surface resistance before and after solvent resistance treatment were large.
Further, in comparative example 2, the initial surface resistance satisfied the surface resistance range of the present disclosure, but the surface resistance after standing at 60 ℃ for 840 hours and the surface resistance after standing at-10 ℃ for 840 hours, and the surface resistance after solvent treatment were too high. Further, the change in surface resistance with time is large before and after the solvent resistance treatment.
Further, it can be seen that in comparative example 4, the initial surface resistance, the surface resistance after left at 60℃for 840 hours and the surface resistance after left at-10℃for 840 hours, and the surface resistance after solvent treatment were too low.
As described above, the antistatic polyester film according to one embodiment of the present disclosure may effectively reduce the static electricity generation rate after the antistatic coating process. In particular, the appearance quality is excellent, and since static electricity is removed, the occurrence of foreign substances caused by dust adsorption and electrical short-circuiting caused by static electricity are suppressed, thereby improving productivity.
While the preferred embodiments of the present disclosure have been shown and described above, the scope of the claims of the present disclosure is not limited to the foregoing embodiments, and various modifications and improvements made by those skilled in the art using the basic concepts of the present disclosure as defined in the appended claims also fall within the scope of the claims of the present disclosure.
[ description of reference numerals ]
110: polyester substrate
120: an antistatic layer.
Claims (16)
1. An antistatic polyester film comprising:
a polyester substrate; and
an antistatic layer positioned on at least one surface of the polyester substrate and formed by curing a coating solution including a conductive polymer resin, a binder resin, and a crosslinking agent,
wherein the weight ratio of the solids content of the binder resin to the crosslinker is greater than 1:1 and less than 1:5.
2. The antistatic polyester film of claim 1 wherein the weight ratio of the solids content of the binder resin to the crosslinker is in the range of 1:2 to 1:4.
3. The antistatic polyester film according to claim 1, wherein the total content of the binder resin and the crosslinking agent is 50 to 90 wt% based on the total weight of the coating solution.
4. The antistatic polyester film according to claim 1, wherein the binder resin comprises at least one selected from the group consisting of urethane-based resins, polyester-based resins, acrylic resins, and copolymers thereof.
5. The antistatic polyester film according to claim 1, wherein the binder resin is of a water-dispersible type and is a resin composed of an anionic polyether polyurethane dispersion containing at least one functional group selected from the group consisting of hydroxyl groups, amine groups, alkyl groups and carboxyl groups.
6. The antistatic polyester film of claim 1 wherein the crosslinker is selected from carbodiimide-based crosslinkers, based onAt least one of an oxazoline-based crosslinker, an epoxy-based crosslinker, and a melamine-based crosslinker.
7. The antistatic polyester film according to claim 1, wherein the thickness of the polyester substrate is in the range of 25 to 250 μιη.
8. The antistatic polyester film of claim 1 wherein the conductive polymer resin comprises an aqueous dispersion comprising a polyanion and a polythiophene or an aqueous dispersion comprising a polyanion and a polythiophene derivative.
9. The antistatic polyester film of claim 1 wherein the antistatic polyester film has a color of greater than 10 at 25 °c 4 Omega/sq and less than 10 7 Surface resistance of Ω/sq.
10. The antistatic polyester film of claim 1 wherein the antistatic polyester film has a color of greater than 10 after standing for 840 hours at 60 °c 4 Omega/sq and less than 10 7 Surface resistance of Ω/sq.
11. The antistatic polyester film of claim 1 wherein the antistatic polyester film has a color of greater than 10 after standing for 840 hours at-10 °c 4 Omega/sq and less than 10 7 Surface resistance of Ω/sq.
12. The antistatic polyester film of claim 1 wherein the change in surface resistance of the antistatic polyester film before and after 840 hours of standing at 60 ℃ is less than 10 Ω/sq.
13. The antistatic polyester film according to claim 1, wherein the change in surface resistance of the antistatic polyester film before and after standing at-10 ℃ for 840 hours can be less than 10 Ω/sq.
14. The antistatic polyester film according to claim 1, wherein
The surface resistance after ten back and forth rubs the surface of the antistatic layer with solvent-impregnated non-fluffing wipe under a load of 1kg is greater than 10 6 Omega/sq and less than 10 9 Ω/sq，
The change in surface resistance before and after ten times of reciprocating rubbing against the surface of the antistatic layer with a solvent-impregnated non-fluffing wipe under a load of 1kg was 10 2 Omega/sq or less, and
the solvent includes at least one selected from the group consisting of ethanol, methyl ethyl ketone, toluene, and ethyl acetate.
15. The antistatic polyester film of claim 1 wherein the antistatic polyester film is produced via an in-line process.
16. The antistatic polyester film according to claim 1, wherein the conductive polymer resin has an average particle diameter of 10nm to 60nm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020220061495A KR20230161747A (en) | 2022-05-19 | 2022-05-19 | Anti-static polyester film |
| KR10-2022-0061495 | 2022-05-19 |
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| CN117126443A true CN117126443A (en) | 2023-11-28 |
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| CN202210846563.7A Pending CN117126443A (en) | 2022-05-19 | 2022-07-19 | antistatic polyester film |
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| KR (1) | KR20230161747A (en) |
| CN (1) | CN117126443A (en) |
| TW (1) | TWI833282B (en) |
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| KR100948904B1 (en) | 2007-12-28 | 2010-03-24 | 제일모직주식회사 | Multilayered Film Having Antistatic Property and Method for Manufacturing the Same |
| KR101077822B1 (en) * | 2009-02-17 | 2011-10-31 | 도레이첨단소재 주식회사 | Anti-static polyester film improved coating defect and manufacturing method thereof |
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- 2022-05-19 KR KR1020220061495A patent/KR20230161747A/en unknown
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| KR20230161747A (en) | 2023-11-28 |
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