WO2018139264A1 - フッ化ビニリデン系樹脂フィルム - Google Patents
フッ化ビニリデン系樹脂フィルム Download PDFInfo
- Publication number
- WO2018139264A1 WO2018139264A1 PCT/JP2018/000982 JP2018000982W WO2018139264A1 WO 2018139264 A1 WO2018139264 A1 WO 2018139264A1 JP 2018000982 W JP2018000982 W JP 2018000982W WO 2018139264 A1 WO2018139264 A1 WO 2018139264A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vinylidene fluoride
- film
- fluoride resin
- resin film
- organic particles
- Prior art date
Links
- 239000011347 resin Substances 0.000 title claims abstract description 131
- 229920005989 resin Polymers 0.000 title claims abstract description 131
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 239000011146 organic particle Substances 0.000 claims abstract description 52
- 239000000203 mixture Substances 0.000 claims abstract description 25
- 239000002245 particle Substances 0.000 claims description 17
- 239000004925 Acrylic resin Substances 0.000 claims description 13
- 229920000178 Acrylic resin Polymers 0.000 claims description 13
- 229920001577 copolymer Polymers 0.000 claims description 10
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 8
- 229920001519 homopolymer Polymers 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 5
- 150000002894 organic compounds Chemical class 0.000 claims 1
- 238000004804 winding Methods 0.000 description 17
- 239000002033 PVDF binder Substances 0.000 description 15
- 239000003990 capacitor Substances 0.000 description 15
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 14
- 230000015556 catabolic process Effects 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000005259 measurement Methods 0.000 description 10
- 239000008188 pellet Substances 0.000 description 10
- 239000000178 monomer Substances 0.000 description 9
- -1 polypropylene Polymers 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 239000010954 inorganic particle Substances 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 230000037303 wrinkles Effects 0.000 description 5
- 239000006057 Non-nutritive feed additive Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000004898 kneading Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000010094 polymer processing Methods 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 229920000570 polyether Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- BBEAQIROQSPTKN-UHFFFAOYSA-N pyrene Chemical compound C1=CC=C2C=CC3=CC=CC4=CC=C1C2=C43 BBEAQIROQSPTKN-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000011342 resin composition Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- BLTXWCKMNMYXEA-UHFFFAOYSA-N 1,1,2-trifluoro-2-(trifluoromethoxy)ethene Chemical compound FC(F)=C(F)OC(F)(F)F BLTXWCKMNMYXEA-UHFFFAOYSA-N 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 229920010524 Syndiotactic polystyrene Polymers 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- GVEPBJHOBDJJJI-UHFFFAOYSA-N fluoranthrene Natural products C1=CC(C2=CC=CC=C22)=C3C2=CC=CC3=C1 GVEPBJHOBDJJJI-UHFFFAOYSA-N 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 description 1
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- 238000009210 therapy by ultrasound Methods 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
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions 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; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/06—Polystyrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions 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 a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions 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 a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions 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 a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/16—Homopolymers or copolymers or vinylidene fluoride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/443—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds
- H01B3/445—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds from vinylfluorides or other fluoroethylenic compounds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/14—Organic dielectrics
- H01G4/18—Organic dielectrics of synthetic material, e.g. derivatives of cellulose
- H01G4/186—Organic dielectrics of synthetic material, e.g. derivatives of cellulose halogenated
-
- 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
- C08J2327/00—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 a halogen; Derivatives of such polymers
- C08J2327/02—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 a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—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 a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/16—Homopolymers or copolymers of vinylidene fluoride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
- C08L2666/12—Homopolymers or copolymers not provided for in C08L2666/06 - C08L2666/10
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the present invention relates to a vinylidene fluoride resin film, and more particularly to a vinylidene fluoride resin film having a large relative dielectric constant.
- Plastic insulators are characterized by high insulation resistance, excellent frequency characteristics, and excellent flexibility, so they are suitable for communication, electronic equipment, power, medium / low-pressure phase advance, inverter, etc. It is expected as a film capacitor and film materials such as a piezoelectric element, a pyroelectric element, and a dielectric for carrying a transfer body.
- a general film capacitor uses a resin having a relatively low dielectric constant such as polypropylene, but it has been proposed to obtain a film capacitor having a high relative dielectric constant by using a vinylidene fluoride resin having a high dielectric constant. .
- Patent Document 1 discloses a vinylidene fluoride resin composition comprising 95 to 30% by weight of vinylidene fluoride resin and 5 to 70% by weight of polyether. Polyoxymethylene is mentioned as this polyether.
- Patent Documents 2 to 5 The technology relating to the film is described in Patent Documents 2 to 5, for example.
- the film described in Patent Document 2 is a high dielectric film formed using a fluororesin containing a total of 95 mol% or more of vinylidene fluoride units and tetrafluoroethylene units, and has high dielectric properties, alternating voltage, and thinning. It is a film for film capacitors that is possible.
- the film described in Patent Document 3 is a high dielectric constant film containing a vinylidene fluoride resin and organic particles.
- the film described in Patent Document 4 is a biaxially stretched polypropylene film in which a target surface shape is formed using crystal modification of a polypropylene film.
- Patent Document 5 describes a stretched film made of a syndiotactic polystyrene resin composition.
- the stretched film contains two types of particles having different particle diameters, and at least one of the particles is silica particles.
- the vinylidene fluoride resin film of Patent Document 2 has a risk of causing dielectric breakdown and has a problem in the winding property of the film.
- the biaxially stretched polypropylene film described in Patent Document 4 has a low dielectric constant. For this reason, there is a limit to downsizing capacitors and the like made using such a film.
- Patent Document 5 As a means for improving the winding property of a resin film, as described in Patent Document 5, a method of adding silica particles to the film is known.
- the inorganic particles when inorganic particles are blended with a resin having a small surface energy such as a fluororesin, the inorganic particles have an influence on the film, such as dispersibility, film forming property, and film winding property.
- the influence of inorganic particles in a general resin film cannot be directly applied to the above-described influence when inorganic particles are blended with a resin having a small surface energy.
- melt-kneading a vinylidene fluoride resin and a silicon oxide compound is not preferable because the vinylidene fluoride resin may be decomposed.
- the flow path of the molten resin such as a die lip may be damaged by the inorganic particles, which is not preferable.
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a vinylidene fluoride-based resin film that can be thinned and has improved film winding properties.
- the vinylidene fluoride resin film of the present invention is a vinylidene fluoride resin film prepared using a film composition comprising a vinylidene fluoride resin and organic particles,
- the vinylidene fluoride resin film has a plurality of protrusions on at least one surface, and among these protrusions, the number of protrusions exceeding 0.10 ⁇ m from the smooth surface where no protrusions are present is the vinylidene fluoride type The number is 40 or more and 400 or less per 0.10 mm 2 of the resin film.
- the vinylidene fluoride-based resin film of the present invention (hereinafter also simply referred to as “film”) is a film produced using a composition containing at least a vinylidene fluoride-based resin and organic particles.
- One surface has a plurality of protrusions, and among these protrusions, the number of protrusions exceeding 0.10 ⁇ m from a smooth surface where no protrusions (fillers) are present is per 0.10 mm 2 of vinylidene fluoride resin film. 40 or more and 400 or less.
- composition for film is a composition containing at least a vinylidene fluoride resin and organic particles.
- the vinylidene fluoride resin means a polymer mainly composed of a vinylidene fluoride monomer.
- a vinylidene fluoride homopolymer is usually used as the vinylidene fluoride resin, but a vinylidene fluoride copolymer (hereinafter referred to as a vinylidene fluoride copolymer) can also be used.
- the vinylidene fluoride copolymer preferably contains 90% or more of vinylidene fluoride monomer, more preferably 95% or more, and even more preferably 97% or more.
- the melting point of the vinylidene fluoride-based resin can be reduced and the dielectric constant can be reduced. it can.
- Such a vinylidene fluoride resin is preferable as a material for a high dielectric film because it has a high relative dielectric constant ( ⁇ ).
- the relative dielectric constant (23 ° C., 20 kHz) of the vinylidene fluoride resin of the present embodiment is preferably 6.0 or more, more preferably 8.0 or more, and further preferably 9.0 or more.
- the vinylidene fluoride resin of this embodiment may be a vinylidene fluoride copolymer of a vinylidene fluoride monomer and another monomer, or a vinylidene fluoride homopolymer composed of only one vinylidene fluoride monomer. It may be.
- examples of other monomers include vinyl fluoride, trifluoroethylene, tetrafluoroethylene, chlorotrifluoroethylene, hexafluoropropylene, and perfluoroalkyl vinyl ethers represented by perfluoromethyl vinyl ether.
- hexafluoropropylene is most preferable from the viewpoint of easy processability.
- the vinylidene fluoride-based resin of the present embodiment is preferably a vinylidene fluoride homopolymer, a vinylidene fluoride-hexafluoropropylene copolymer, or a mixture thereof. Further, when the vinylidene fluoride resin of the present embodiment is a mixture of a vinylidene fluoride homopolymer and a vinylidene fluoride-hexafluoropropylene copolymer, the mixing ratio thereof is not particularly limited.
- the molecular structure of the vinylidene fluoride resin of the present embodiment may be linear or branched.
- vinylidene fluoride resin of the present embodiment for example, a known linear polyvinylidene fluoride (for example, KF # 1100 manufactured by Kureha Co., Ltd.) can be suitably used.
- a known linear polyvinylidene fluoride for example, KF # 1100 manufactured by Kureha Co., Ltd.
- the average particle size of the organic particles in the present embodiment is preferably 0.80 ⁇ m or more and 3.0 ⁇ m or less, more preferably 1.5 ⁇ m or more and 2.0 ⁇ m or less, and further preferably 1.8 ⁇ m or more, 2 0.0 ⁇ m or less. If the average particle diameter of the organic particles is too small, the protrusions are small and the film winding property may be deteriorated. On the other hand, if the average particle size of the organic particles is too large, the protrusions become large and may break during stretching.
- the organic particles of the present embodiment are preferably resins that do not melt in the film processing step and are not easily deformed after film processing, for example, crosslinked acrylic resin and / or crosslinked styrene resin particles.
- the composition for films contains 2 or more types of organic particles, the compounding ratio of these organic particles is not specifically limited.
- cross-linked acrylic resin known ones such as MX-80H3wT, MX-150, MX-180TA (all manufactured by Soken Chemical Co., Ltd.) and SSX-101 (Techpolymer Co., Ltd.) can be used.
- cross-linked polystyrene resin for example, a known one such as SX-130H (manufactured by Soken Chemical Co., Ltd.) can be used.
- the organic particles are used in an amount of 0.050 part by weight or more and 3.0 parts by weight or less, preferably 0.050 part by weight or more, and 1.0 parts per 100 parts by weight of vinylidene fluoride resin.
- the content is not more than parts by weight, more preferably not less than 0.10 parts by weight and not more than 0.30 parts by weight. It is preferable that the content of the organic particles is within this range from the viewpoint of improving the winding property of the film and the ability to stretch the film without breaking.
- the film composition of the present embodiment may contain other resins in addition to the vinylidene fluoride resin and organic particles.
- the film composition may further contain an acrylic resin as a polymer processing aid.
- the polymer processing aid is 0.10 parts by weight or more and 10 parts by weight or less, more preferably 0.50 parts by weight or more, 5.0 parts by weight with respect to 100 parts by weight of the vinylidene fluoride resin. It can be contained in an amount of not more than parts by weight, more preferably not less than 1.0 parts by weight and not more than 3.0 parts by weight.
- an acrylic processing aid is preferred from the viewpoint of improving the smoothness and stretchability of the film.
- the vinylidene fluoride resin film according to the present embodiment is, for example, mixed with pellets made of a vinylidene fluoride resin, then melted and extruded from the vinylidene fluoride resin, and further stretched. Can be obtained by:
- the manufacturing method of a vinylidene fluoride resin film which concerns on this embodiment is not limited to the following method.
- MFR melt flow rate
- the set temperature of the extruder may be a temperature at which the mixed resin can be melt-extruded, for example, 150 ° C. to 250 ° C.
- melt-extruded resin is cut with, for example, a pelletizer, polyvinylidene fluoride pellets containing organic particles can be obtained.
- the polyvinylidene fluoride resin film according to this embodiment is formed by melt extrusion using the thus obtained polyvinylidene fluoride pellets containing organic particles, and stretching the obtained unstretched film. Can be obtained.
- Examples of the stretching method include biaxial stretching.
- a method for producing a polyvinylidene fluoride film obtained by biaxial stretching hereinafter also referred to as “biaxially stretched polyvinylidene fluoride film”.
- polyvinylidene fluoride pellets containing organic particles are supplied to a known melt extruder.
- a known melt extruder As an extruder in the production of a biaxially stretched polyvinylidene fluoride film, a uniaxial or biaxial extruder can be used.
- the polymer obtained by melting and extruding with an extruder is filtered through a filter.
- This filtration removes foreign matter contained in the polymer, such as foreign matter contained in the raw material, foreign matter mixed from the outside during the film forming process, and organic particles that are agglomerated by association and oversized. It is burned.
- the filter can be appropriately selected from filters having openings in a range where the increase in resin pressure does not substantially affect the processability of the film.
- this polymer is extruded into a sheet form from, for example, a T die, and is cooled and solidified on a casting roll to form an unstretched film.
- the biaxially stretched polyvinylidene fluoride film can be produced, for example, by sequential stretching.
- the first longitudinal stretching is performed at a stretching temperature of 110 ° C. or more and 170 ° C. or less, preferably 140 ° C. or more and 165 ° C. or less, and a stretching ratio of 2.0 times or more and 10 times or less, Stretch as 2.5 times or more and 4.0 times or less.
- the stretching temperature in the longitudinal direction is important for suppressing the generation of scratches, and when the stretching temperature in the longitudinal direction is lower than 110 ° C., scratches are generated on the film surface or the film is easily broken.
- the stretching temperature in the longitudinal direction is higher than 170 ° C., the film surface is damaged by heat and the film becomes brittle.
- the temperature of the tenter stretching machine is 110 ° C. or more and 170 ° C. or less, preferably 140 ° C. or more and 165 ° C. or less, and the stretching ratio is 2.0 times or more in the width direction. Stretching is 10 times or less, preferably 3.0 times or more and 5.0 times or less. If the stretching temperature in the width direction is lower than 110 ° C., the film is liable to break, and if the stretching temperature in the width direction is higher than 170, sufficient strength cannot be obtained. Moreover, it is unpreferable also from the point which a stretch spot generate
- the total stretching ratio in the longitudinal direction and the width direction is 4.0 times or more and 20 times or less, preferably 5.0 times or more and 10 times or less. If the total draw ratio is less than 4.0 times, stretch spots are likely to occur, and it is difficult to obtain sufficient strength for the film. On the other hand, if it is larger than 10 times, film breakage tends to occur and it is difficult to produce a stable film.
- a timely magnification can be selected to achieve the target breaking strength, but in order to increase the breaking strength in the width direction, the stretching ratio in the width direction should be set higher than that in the longitudinal direction. Is more preferable.
- the biaxially stretched film is wound into a suitable width and length by a slitting process.
- the manufacturing method of the vinylidene fluoride resin film according to the present embodiment is not limited to the above-described method.
- a vinylidene fluoride resin film raw material
- a polyvinylidene fluoride resin simple substance Organic particles may be added. Or you may mix the pellet containing an organic particle, and a polyvinylidene fluoride resin single-piece
- the vinylidene fluoride resin film of the present embodiment obtained as described above has a plurality of protrusions on at least one surface of the vinylidene fluoride resin film.
- the protrusions may be formed on both surfaces of the vinylidene fluoride resin film.
- the number of protrusions exceeding 0.10 ⁇ m from the smooth surface is 40 or more and 400 or less per 0.10 mm 2 of the vinylidene fluoride resin film.
- they are 40 or more and 200 or less, More preferably, they are 50 or more and 100 or less. If the number of protrusions is within this range, there is no risk of air escape failure during winding of the vinylidene fluoride resin film. Moreover, if it is this range, generation
- the smooth surface means a surface on which no protrusion is specifically formed.
- the average protrusion height of the vinylidene fluoride resin film is preferably 0.18 ⁇ m or more and 1.0 ⁇ m or less. More preferably, they are 0.18 micrometer or more and 0.50 micrometer or less, More preferably, they are 0.18 micrometer or more and 0.30 micrometer or less. It is preferable from a viewpoint of improving the winding property of a film that average protrusion height is this range.
- the “average protrusion height” of the protrusion means an average value of the height from the film smooth surface of the protrusion exceeding 0.10 ⁇ m existing on the vinylidene fluoride resin film surface.
- the number of protrusions was specified using an analysis software from a film smooth surface included in the range by specifying an arbitrary range from a laser microscope (manufactured by Keyence Corporation). The number of protrusions exceeding 10 ⁇ m. In order to accurately count the number of protrusions, it is preferable to count the protrusions by enlarging the field of view at least 10 times or more, preferably 50 times or more.
- the film thickness of the vinylidene fluoride resin film of the present embodiment is preferably 1.0 ⁇ m or more and 8.0 ⁇ m or less, more preferably 1.5 ⁇ m or more and 5.0 ⁇ m or less, and more preferably 1.5 ⁇ m or more. More preferably, it is 3.0 ⁇ m or less. By setting it as this range, products, such as a capacitor produced using the vinylidene fluoride resin film concerning this embodiment, can be reduced in size.
- the average particle diameter of the organic particles contained in the film composition is d ( ⁇ m), and the film thickness of the vinylidene fluoride resin film is t ( ⁇ m).
- the vinylidene fluoride resin film of the present embodiment has a static friction coefficient of 0.20 or more and 0.50 or less, more preferably 0.30 or more and 0.50 or less, and still more preferably 0.00. 40 or more and 0.50 or less.
- the static friction coefficient means a friction coefficient when the film starts to slide.
- the vinylidene fluoride resin film of this embodiment is based on vinylidene fluoride resin, it has a high dielectric constant.
- the winding property of the film is improved by forming the protrusions.
- the vinylidene fluoride resin film of this embodiment has a dielectric breakdown voltage of 500 kV / mm or more and a sufficiently high dielectric breakdown strength. Therefore, the vinylidene fluoride resin film of this embodiment can be stably used as a film capacitor as compared with the vinylidene fluoride resin film produced using only the vinylidene fluoride resin.
- Dielectric breakdown strength or “dielectric breakdown strength” is as defined in JIS-C2110 and JIS-C2151, and the breakdown voltage is divided by the thickness of the insulator (in this specification, a film). This is the dielectric breakdown voltage per thickness.
- the metal vapor deposition capacitor is short-circuited even during abnormal discharge, resulting in dielectric breakdown. There is little possibility of doing.
- the metal vapor deposition capacitor is short-circuited even during abnormal discharge, resulting in dielectric breakdown.
- the metal vapor deposition capacitor is short-circuited even during abnormal discharge, resulting in dielectric breakdown.
- the metal vapor deposition capacitor is short-circuited even during abnormal discharge, resulting in dielectric breakdown.
- there is a gap between the films so it is possible to quickly cool and release the generated gas. (Self-healing property) is improved.
- the vinylidene fluoride resin film of the present embodiment is preferably used for a capacitor, for example.
- the static friction coefficient of the vinylidene fluoride resin film of this embodiment is preferably 0.20 or more and 0.50 or less.
- the average particle diameter of organic particles is d ( ⁇ m) and the film thickness of the vinylidene fluoride resin film is t ( ⁇ m)
- the film composition contains 0.050 part by weight or more and 3.0 parts by weight or less of organic particles with respect to 100 parts by weight of the vinylidene fluoride resin. Is preferred.
- the organic particles are preferably one or more resin particles selected from the group consisting of a crosslinked acrylic resin and a crosslinked styrene resin.
- the vinylidene fluoride resin is preferably a vinylidene fluoride homopolymer, but a vinylidene fluoride-hexafluoropropylene copolymer, or a copolymer thereof. Mixtures can be used.
- the film thickness is preferably 1.0 ⁇ m or more and 10 ⁇ m or less.
- the average particle diameter of the organic particles is 0.50 ⁇ m or more and 5.0 ⁇ m or less.
- the average protrusion height of the protrusions is preferably 0.15 ⁇ m or more and 1.0 ⁇ m or less.
- Example 1 ⁇ Production of film> (Preparation of film composition)
- Cross-linked acrylic resin SSX-101 (Techpolymer Co., Ltd.) is used as organic particles with respect to 100 parts by weight of linear polyvinylidene fluoride resin (KF # 1100 manufactured by Kureha Co., Ltd.) having a melt flow rate (MFR) of 2 to 4 g / 10 min.
- MFR melt flow rate
- the film composition obtained as described above was supplied to a unidirectional biaxial kneading extruder (TEM-26, manufactured by Toshiba Machine Co., Ltd.) whose temperature was adjusted to 160 ° C. to 230 ° C., and melt kneaded to produce pellets.
- TEM-26 unidirectional biaxial kneading extruder
- Examples 2 to 4 A biaxially stretched film was produced in the same manner as in Example 1 except that the film thicknesses shown in Table 1 were used.
- Example 5 A biaxially stretched film was produced in the same manner as in Example 1 except that 0.10 parts by weight of the crosslinked styrene resin SX-130H was added as organic particles to obtain the film thickness shown in Table 1.
- Example 7 and 8 A biaxially stretched film was produced in the same manner as in Example 5 except that the amount of organic particles added was 0.30 parts by weight and the film thickness shown in Table 1 was used.
- Example 9 to 12 A biaxially stretched film was produced in the same manner as in Example 1 except that the crosslinked acrylic resin MX-150 was used as the organic particles and the film thickness shown in Table 1 was used.
- Example 13 and 14 A biaxially stretched film was produced in the same manner as in Examples 5 and 6 except that the crosslinked acrylic resin MX-180TA was used as the organic particles.
- Example 15 to 18 A biaxially stretched film was produced in the same manner as in Example 13, except that the amount of organic particles added was 0.30 part by weight, and the film thickness shown in Table 1 was used.
- Example 19 to 22 A biaxially stretched film was produced in the same manner as in Example 1 except that 0.10 parts by weight of the crosslinked acrylic resin NMB-0220C was added as organic particles to obtain the film thickness shown in Table 2.
- Example 23 to 26 A biaxially stretched film was produced in the same manner as in Example 19 except that the amount of organic particles added was 0.30 parts by weight and the film thickness was as shown in Table 2.
- Example 27 to 29 A biaxially stretched film was produced in the same manner as in Example 1 except that 0.10 parts by weight of the crosslinked acrylic resin NMB-0520C was added as organic particles to obtain the film thickness shown in Table 2.
- Examples 30 to 32 A biaxially stretched film was produced in the same manner as in Example 27 except that the amount of organic particles added was 0.30 parts by weight and the film thickness shown in Table 2 was used.
- Example 19 A biaxially stretched film was produced in the same manner as in Example 1 except that 0.10 parts by weight of NMB-0520C was added as organic particles and the film thickness was 2.0 ⁇ m.
- Comparative Example 20 A biaxially stretched film was produced in the same manner as in Comparative Example 19 except that the amount of organic particles added was 0.30 parts by weight and the film thickness was 2.2 ⁇ m.
- Organic particles are dispersed in an aqueous solution of sodium hexametaphosphate (manufactured by Wako Pure Chemical Industries), subjected to ultrasonic treatment, and then subjected to a particle size distribution measuring device (“MicroTracMT3300EX II” manufactured by Microtrac Bell Co., Ltd.). Was measured.
- the refractive index of the dispersion solvent was 1.33, and the refractive index of the organic particles was 1.49.
- the surface shape of the film was measured using a shape analysis laser microscope (Keyence Co., Ltd. “VK-X250”). From the observed image, the average protrusion height exceeding 0.10 ⁇ m from the smooth surface where no protrusion was present, and The number of protrusions per 0.10 mm 2 was calculated from volume area measurement analysis. The number of measurements per sample was 10 times, and the average value was obtained from all measured values.
- the setting conditions of the shape analysis laser microscope are as follows.
- Friction measuring machine (TR type” manufactured by Toyo Seiki Seisakusho) Measurement direction: Film longitudinal direction Test speed: 100 mm / min Sliding piece mass: 200 g (Winding property)
- the film was wound up, and wrinkles (longitudinal stripes) or displacement generated in the film after winding up were visually observed.
- wrinkle generated in the film after winding was less than 5
- the film winding property was “good: A”
- the wrinkle was 5 or more
- the film winding property was “inferior: B”. If the film winding property is evaluated as “good: A”, the film is considered to be at a practical level.
- the vinylidene fluoride resin film according to the present invention is a film capacitor for communication, electronic equipment, power, medium / low pressure phase advance, automatic external defibrillator, especially for inverters as automobile parts, or It can be used as a film material such as a piezoelectric element, a pyroelectric element, and a dielectric for carrying a transfer body.
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Abstract
Description
本実施形態に係るフィルム用組成物とは、少なくとも、フッ化ビニリデン系樹脂と、有機粒子とを含有する組成物である。
以下、本実施形態に係るフッ化ビニリデン系樹脂フィルムの製造方法の一実施形態について説明する。
例えば上記のようにして得られる本実施形態のフッ化ビニリデン系樹脂フィルムは、フッ化ビニリデン系樹脂フィルムの少なくとも一方の面に複数の突起を有している。なお、本実施形態において、突起は、フッ化ビニリデン系樹脂フィルムの両面に形成されていてもよい。
<フィルムの作製>
(フィルム用組成物の調製)
メルトフローレイト(MFR)が2~4g/10分である直鎖状ポリフッ化ビニリデン樹脂(クレハ社製KF#1100)100重量部に対し、有機粒子として、架橋アクリル樹脂SSX-101(テクポリマー社製)0.30重量部を添加して均一になるように混合して、フィルム用組成物を調製した。
上記により得られたフィルム用組成物を、160℃~230℃に温調した同方向二軸混練押出機(東芝機械社製、TEM-26)に供給し、溶融混練し、ペレットを作製した。
上記により得られたペレットを単軸押出機(ユニオン・プラスチックス社製)に投入し、樹脂温度270℃~280℃の樹脂混練物を200メッシュのステンレスフィルターに通してTダイから押出し、初めに表面を100℃に保った第一金属ドラム上にキャストし、次に、表面を50℃に保った第二金属ドラム上でさらに冷却し、こうしてフィルム用組成物から未延伸シートを作製した。
延伸ロールを用いて、上記により得られた未延伸シートを縦方向に150~160℃で一軸延伸し、次いで150℃~160℃に設定したテンター延伸機に導入し、横方向に延伸して、厚み2.1μmの二軸延伸フィルムを得た。
表1に記載のフィルム厚みとした以外は、実施例1と同様にして、二軸延伸フィルムを作製した。
有機粒子として架橋スチレン樹脂SX-130Hを0.10重量部添加し、表1に記載のフィルム厚みとした以外は、実施例1と同様にして、二軸延伸フィルムを作製した。
有機粒子の添加量を0.30重量部とし、表1に記載のフィルム厚みとした以外は、実施例5と同様にして、二軸延伸フィルムを作製した。
有機粒子として架橋アクリル樹脂MX-150とし、表1に記載のフィルム厚みとした以外は、実施例1と同様にして、二軸延伸フィルムを作製した。
有機粒子として架橋アクリル樹脂MX-180TAを用いた以外は、実施例5,6と同様にして二軸延伸フィルムを作製した。
有機粒子の添加量を0.30重量部とし、表1に記載のフィルム厚みとした以外は、実施例13と同様にして、二軸延伸フィルムを作製した。
有機粒子として架橋アクリル樹脂NMB-0220Cを0.10重量部添加し、表2に記載のフィルム厚みとした以外は、実施例1と同様にして、二軸延伸フィルムを作製した。
有機粒子の添加量を0.30重量部とし、表2に記載のフィルム厚みとした以外は、実施例19と同様にして、二軸延伸フィルムを作製した。
有機粒子として架橋アクリル樹脂NMB-0520Cを0.10重量部添加し、表2に記載のフィルム厚みとした以外は、実施例1と同様にして、二軸延伸フィルムを作製した。
有機粒子の添加量を0.30重量部とし、表2に記載のフィルム厚みとした以外は、実施例27と同様にして、二軸延伸フィルムを作製した。
有機粒子を添加せず、表3に記載のフィルム厚みとした以外は、実施例1と同様にして、二軸延伸フィルムを作製した。
有機粒子として架橋アクリル樹脂MX-80H3wTを0.30重量部添加し、表3に記載のフィルム厚みとした以外は、実施例1と同様にして、二軸延伸フィルムを作製した。
有機粒子としてSX-130Hを0.10重量部添加し、表3に記載のフィルム厚みとした以外は、実施例1と同様にして、二軸延伸フィルムを作製した。
有機粒子の添加量を0.30重量部とし、表3に記載のフィルム厚みとした以外は比較例9と同様にして、二軸延伸フィルムを作製した。
有機粒子としてMX-150を0.10重量部添加し、表3に記載のフィルム厚みとした以外は、実施例1と同様にして、二軸延伸フィルムを作製した。
表3に記載のフィルム厚みとした以外は比較例13と同様にして、二軸延伸フィルムを作製した。
有機粒子としてMX-180TAを0.10重量部添加し、表3に記載のフィルム厚みとした以外は、実施例1と同様にして、二軸延伸フィルムを作製した。
有機粒子としてNMB-0520Cを0.10重量部添加し、フィルム厚みを2.0μmとした以外は、実施例1と同様にして、二軸延伸フィルムを作製した。
有機粒子の添加量を0.30重量部とし、フィルム厚みを2.2μmとした以外は比較例19と同様にして、二軸延伸フィルムを作製した。
実施例1~32及び比較例1~20の各有機粒子に対して、以下の試験を行った。
実施例1~32および比較例1~20の各フィルムに対して、以下の試験を行った。
フィルムを10枚重ねに折ってから、フィルムの中心をTD方向に5.0mm間隔で40点マーキングした。それから、卓上型厚み計(株式会社山文電気製 TOF-5R)を用いて、マイクロメータ法によって40点すべてにおけるフィルム厚を測定し、各値を10で割った計40点の平均厚みを算出した。
上記により得られたフィルム厚を用いて、平均粒子径(d)/をフィルム厚(t)の値を算出した。
形状解析レーザ顕微鏡(株式会社キーエンス社製「VK-X250」)を用いてフィルムの表面形状を測定し、観察画像より、突起が存在していない平滑面から0.10μmを超える平均突起高さおよび0.10mm2あたりの突起個数を体積面積計測解析から算出した。なお、1サンプルあたりの測定数を10回とし、全測定値から平均値を求めた。また、形状解析レーザ顕微鏡の設定条件は以下の通りである。
対物レンズ :50倍
フィルター種別 :ガウシアン
S-フィルター :なし
F-オペレーション:なし
L-フィルター :0.080mm
終末効果補正:有効
1ショット測定範囲:212.347×287.222(μm2)
測定範囲:3×3マス(9ショット)
測定パラメータ:平均突起高さ(St)、0.10mm2あたりの突起個数(Pc)
解析範囲:0.40×0.60(mm2)
高さしきい値:0.10μm
微小領域設定下限値:50Pixel
(摩擦係数)
ガラス盤上にフッ化ビニリデン系樹脂フィルムを貼付け、金属すべり片には厚み40μmのポリプロピレンフィルム(東洋紡株式会社製パイレンフィルム-CT P1011)を貼付け、スプリングなしで行った以外はJIS-K7125:1999を準用して、静
摩擦係数を算出した。なお、1サンプルあたりの測定数を5回とし、全測定値から平均値を求めた。測定機器、および条件は以下に示す通りである。
測定方向 :フィルム長手方向
試験速度 :100mm/min
すべり片質量 :200g
(巻き取り性)
フィルムを巻き取り、巻き取り後にフィルムに発生するシワ(縦スジ)またはズレを目視で観察した。巻き取り後のフィルムに発生したシワが5本未満であれば、フィルム巻き取り性「良好:A」、シワが5本以上であれば、フィルム巻き取り性「劣る:B」と評価した。なお、フィルム巻き取り性が「良好:A」と評価されれば、フィルムは実用可能なレベルであると考えられる。
フィルムを延伸して製膜する際に、フィルムが破れずに製膜可能であれば、フィルム製膜性が「良好:A」、破れが発生する等して製膜不能であれば製膜性が「悪い:B」と判断した。
Claims (10)
- フッ化ビニリデン系樹脂および有機粒子を含有するフィルム用組成物を用いて作製されたフッ化ビニリデン系樹脂フィルムであって、
当該フッ化ビニリデン系樹脂フィルムの少なくとも一方面に複数の突起を有し、
前記複数の突起のうち、突起が存在していない平滑面から0.10μmを超える突起の数が、前記フッ化ビニリデン系樹脂フィルム0.10mm2あたり40個以上、400個以下であることを特徴とするフッ化ビニリデン系樹脂フィルム。 - 静摩擦係数が0.20以上、0.50以下であることを特徴とする請求項1に記載のフッ化ビニリデン系樹脂フィルム。
- 前記有機粒子の平均粒子径をd(μm)、前記フッ化ビニリデン系樹脂フィルムのフィルム厚をt(μm)としたとき、0.18≦d/t≦2.0の関係式を満たすことを特徴とする請求項1または2に記載のフッ化ビニリデン系樹脂フィルム。
- 前記フィルム用組成物は、前記フッ化ビニリデン系樹脂100重量部に対し、前記有機粒子を0.050重量部以上、3.0重量部以下含有することを特徴とする請求項1~3のいずれか1項に記載のフッ化ビニリデン系樹脂フィルム。
- 前記有機粒子は、架橋アクリル樹脂、架橋スチレン樹脂から選択される1種またはそれ以上の有機化合物の粒子であることを特徴とする請求項1~4のいずれか1項に記載のフッ化ビニリデン系樹脂フィルム。
- 前記フッ化ビニリデン系樹脂は、フッ化ビニリデンの単独重合体もしくはフッ化ビニリデン-ヘキサフルオロプロピレン共重合体、またはそれらの混合物であることを特徴とする請求項1~5のいずれか1項に記載のフッ化ビニリデン系樹脂フィルム。
- 前記フィルム用組成物は、前記フッ化ビニリデン系樹脂100重量部に対し、アクリル樹脂を1.0重量部以上、10重量部以下含有することを特徴とする請求項1~6のいずれか1項に記載のフッ化ビニリデン系樹脂フィルム。
- フィルム厚が1.0μm以上、10μm以下であることを特徴とする請求項1~7のいずれか1項に記載のフッ化ビニリデン系樹脂フィルム。
- 前記有機粒子の平均粒子径が0.50μm以上、5.0μm以下であることを特徴とする請求項1~8のいずれか1項に記載のフッ化ビニリデン系樹脂フィルム。
- 前記突起の平均突起高さが0.15μm以上、1.0μm以下であることを特徴とする請求項1~9のいずれか1項に記載のフッ化ビニリデン系樹脂フィルム。
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JP2018564493A JP6814820B2 (ja) | 2017-01-25 | 2018-01-16 | フッ化ビニリデン系樹脂フィルム |
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JPWO2018139264A1 (ja) | 2019-08-08 |
CN110036062A (zh) | 2019-07-19 |
EP3575347B1 (en) | 2021-11-24 |
CN110036062B (zh) | 2021-04-30 |
US11136440B2 (en) | 2021-10-05 |
JP6814820B2 (ja) | 2021-01-20 |
EP3575347A1 (en) | 2019-12-04 |
EP3575347A4 (en) | 2020-02-19 |
US20190330431A1 (en) | 2019-10-31 |
KR20190076012A (ko) | 2019-07-01 |
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