GB1173688A - Polyvinylidene Fluoride Films - Google Patents
Polyvinylidene Fluoride FilmsInfo
- Publication number
- GB1173688A GB1173688A GB3263167A GB3263167A GB1173688A GB 1173688 A GB1173688 A GB 1173688A GB 3263167 A GB3263167 A GB 3263167A GB 3263167 A GB3263167 A GB 3263167A GB 1173688 A GB1173688 A GB 1173688A
- Authority
- GB
- United Kingdom
- Prior art keywords
- film
- stretched
- orientated
- films
- temperature
- 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.)
- Expired
Links
- 239000002033 PVDF binder Substances 0.000 title abstract 6
- 229920002981 polyvinylidene fluoride Polymers 0.000 title abstract 6
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 abstract 2
- 229920001577 copolymer Polymers 0.000 abstract 1
- 238000007720 emulsion polymerization reaction Methods 0.000 abstract 1
- 125000002573 ethenylidene group Chemical group [*]=C=C([H])[H] 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 abstract 1
- 229920001519 homopolymer Polymers 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 239000000178 monomer Substances 0.000 abstract 1
- 229920006254 polymer film Polymers 0.000 abstract 1
- 230000000379 polymerizing effect Effects 0.000 abstract 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
1,173,688. Stretching vinylidene fluoride polymer films. KUREHA KAGAKU KOGYO K.K. 14 July, 1967 [14 July, 1966; 10 May, 1967], No. 32631/67. Heading B5B. [Also in Division HI] The electrical properties of unorientated films of homopolymers or copolymers of vinylidene fiuoride containing at least 80% by weight of vinylidene fluoride are improved by stretching such a film in the longitudinal and/or transverse direction at a stretch ratio of at least 2-5 and at room temperature or at a higher temperature, whereby the film is either monoaxially or biaxially orientated. The film after having been stretched may be heat treated at a temperature within the range 125‹ to 175‹ C. while being maintained under such a tension that it does not elongate or contract by more than 10% in any direction in which it has been orientated. The film may be rapidly cooled immediately after having been heat treated. The polyvinylidene fluoride used for producing the film is preferably prepared by polymerizing the monomer at a low temperature initially below the critical temperature. In an example, polyvinylidene fluoride having an intrinsic viscosity of 1-00 and prepared by emulsion polymerization at 25‹ C. is formed into a film by melt extrusion at 230‹ to 240‹ C. and the molten film rapidly cooled by contacting it with metal rolls maintained at 80‹ C. The unorientated film thus obtained is stretched at 150‹ C. in its longitudinal direction at a stretch ratio of 3.5 and thereby orientated in this direction. In another example, an orientated PVDF film produced in a similar manner is heat set in an oven at 140‹ C. while under such tension as to restrict its shrinkage to 5% in the direction in which it was stretched. Data are furnished showing that the dielectric constants of PVDF films produced according to the invention are higher and their dielectric loss tangents lower than those of PVDF films which have not been stretched in accordance with the invention.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP41046082A JPS5017680B1 (en) | 1966-07-14 | 1966-07-14 | |
| JP42029668A JPS5125386B1 (en) | 1967-05-10 | 1967-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1173688A true GB1173688A (en) | 1969-12-10 |
Family
ID=26367892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3263167A Expired GB1173688A (en) | 1966-07-14 | 1967-07-14 | Polyvinylidene Fluoride Films |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE701365A (en) |
| CA (1) | CA921220A (en) |
| DE (1) | DE1704762B2 (en) |
| GB (1) | GB1173688A (en) |
| NL (1) | NL142517B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2316645A1 (en) * | 1972-04-06 | 1973-11-15 | Kureha Chemical Ind Co Ltd | METHOD FOR MANUFACTURING STRETCHED POLYVINYLIDEN FLUORIDE FILMS |
| FR2378624A1 (en) * | 1977-01-27 | 1978-08-25 | Kureha Chemical Ind Co Ltd | PERFECTED PROCESS FOR PREPARING A MICROPOROUS TUBE IN POLYMER OF VINYLIDENE FLUORIDE |
| FR2433404A1 (en) * | 1978-07-27 | 1980-03-14 | Kureha Chemical Ind Co Ltd | POLYVINYLIDENE FLUORIDE FILM OR FILM HAVING DOUBLE-ORIENTED CRYSTALS HAVING HIGH DIELECTRIC PROPERTIES |
| WO1981001567A1 (en) * | 1979-11-30 | 1981-06-11 | Nat Res Dev | Vinylidene fluoride polymers |
| EP0051418A2 (en) * | 1980-10-31 | 1982-05-12 | Kureha Kagaku Kogyo Kabushiki Kaisha | Capacitor and dielectric |
| FR2516442A1 (en) * | 1981-11-16 | 1983-05-20 | Solvay | METHOD AND APPARATUS FOR EXTRUSION OF POLYMER FILMS OF HALOGENATED OLEFINS, USE AS PIEZOELECTRIC FILMS AFTER POLARIZATION PROCESSING |
| US4510300A (en) * | 1982-04-08 | 1985-04-09 | E. I. Du Pont De Nemours And Company | Perfluorocarbon copolymer films |
| US4510301A (en) * | 1982-06-01 | 1985-04-09 | E. I. Du Pont De Nemours And Company | Fluorocarbon copolymer films |
| DE3406125A1 (en) * | 1984-01-31 | 1985-08-01 | Norddeutsche Seekabelwerke Ag, 2890 Nordenham | Process and device for producing piezoelectric and/or pyroelectric polyvinylidene fluoride films |
| CN111548515A (en) * | 2020-04-15 | 2020-08-18 | 哈尔滨理工大学 | Post-treatment process of non-oxide ceramic/polyvinylidene fluoride composite film |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56153606A (en) * | 1980-04-28 | 1981-11-27 | Kureha Chemical Ind Co Ltd | High molecular dielectric material |
| JPS5962115A (en) * | 1982-10-01 | 1984-04-09 | Kureha Chem Ind Co Ltd | Dielectric film |
| JPS603807A (en) * | 1983-06-20 | 1985-01-10 | ダイキン工業株式会社 | Polymer dielectric material |
-
1967
- 1967-07-05 CA CA994947A patent/CA921220A/en not_active Expired
- 1967-07-13 NL NL6709725A patent/NL142517B/en not_active IP Right Cessation
- 1967-07-13 DE DE19671704762 patent/DE1704762B2/en not_active Ceased
- 1967-07-14 BE BE701365D patent/BE701365A/xx not_active IP Right Cessation
- 1967-07-14 GB GB3263167A patent/GB1173688A/en not_active Expired
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2316645A1 (en) * | 1972-04-06 | 1973-11-15 | Kureha Chemical Ind Co Ltd | METHOD FOR MANUFACTURING STRETCHED POLYVINYLIDEN FLUORIDE FILMS |
| FR2378624A1 (en) * | 1977-01-27 | 1978-08-25 | Kureha Chemical Ind Co Ltd | PERFECTED PROCESS FOR PREPARING A MICROPOROUS TUBE IN POLYMER OF VINYLIDENE FLUORIDE |
| FR2433404A1 (en) * | 1978-07-27 | 1980-03-14 | Kureha Chemical Ind Co Ltd | POLYVINYLIDENE FLUORIDE FILM OR FILM HAVING DOUBLE-ORIENTED CRYSTALS HAVING HIGH DIELECTRIC PROPERTIES |
| US4298719A (en) | 1978-07-27 | 1981-11-03 | Kureha Kagaku Kogyo Kabushiki Kaisha | Doubly oriented film of polyvinylidene fluoride |
| WO1981001567A1 (en) * | 1979-11-30 | 1981-06-11 | Nat Res Dev | Vinylidene fluoride polymers |
| EP0051418A3 (en) * | 1980-10-31 | 1983-08-03 | Kureha Kagaku Kogyo Kabushiki Kaisha | Condenser |
| EP0051418A2 (en) * | 1980-10-31 | 1982-05-12 | Kureha Kagaku Kogyo Kabushiki Kaisha | Capacitor and dielectric |
| FR2516442A1 (en) * | 1981-11-16 | 1983-05-20 | Solvay | METHOD AND APPARATUS FOR EXTRUSION OF POLYMER FILMS OF HALOGENATED OLEFINS, USE AS PIEZOELECTRIC FILMS AFTER POLARIZATION PROCESSING |
| EP0081866A1 (en) * | 1981-11-16 | 1983-06-22 | SOLVAY & Cie (Société Anonyme) | Method and apparatus for extruding films of vinylidene fluoride polymers |
| US4481158A (en) * | 1981-11-16 | 1984-11-06 | Solvay & Cie (Societe Anonyme) | Extrusion of films of vinylidene fluoride polymers |
| US4510300A (en) * | 1982-04-08 | 1985-04-09 | E. I. Du Pont De Nemours And Company | Perfluorocarbon copolymer films |
| US4510301A (en) * | 1982-06-01 | 1985-04-09 | E. I. Du Pont De Nemours And Company | Fluorocarbon copolymer films |
| DE3406125A1 (en) * | 1984-01-31 | 1985-08-01 | Norddeutsche Seekabelwerke Ag, 2890 Nordenham | Process and device for producing piezoelectric and/or pyroelectric polyvinylidene fluoride films |
| CN111548515A (en) * | 2020-04-15 | 2020-08-18 | 哈尔滨理工大学 | Post-treatment process of non-oxide ceramic/polyvinylidene fluoride composite film |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1704762B2 (en) | 1975-10-30 |
| BE701365A (en) | 1967-12-18 |
| NL142517B (en) | 1974-06-17 |
| CA921220A (en) | 1973-02-20 |
| DE1704762A1 (en) | 1971-02-25 |
| NL6709725A (en) | 1968-01-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |