CA923846A - Process for producing stable electret consisting of crystalline high molecular weight material - Google Patents
Process for producing stable electret consisting of crystalline high molecular weight materialInfo
- Publication number
- CA923846A CA923846A CA088095A CA88095A CA923846A CA 923846 A CA923846 A CA 923846A CA 088095 A CA088095 A CA 088095A CA 88095 A CA88095 A CA 88095A CA 923846 A CA923846 A CA 923846A
- Authority
- CA
- Canada
- Prior art keywords
- molecular weight
- high molecular
- weight material
- producing stable
- crystalline high
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
- H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
- H01G7/021—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric
- H01G7/023—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric of macromolecular compounds
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/45—Molding using an electrical force
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Filtering Materials (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP44056614A JPS497959B1 (de) | 1969-07-17 | 1969-07-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA923846A true CA923846A (en) | 1973-04-03 |
Family
ID=13032119
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA088095A Expired CA923846A (en) | 1969-07-17 | 1970-07-14 | Process for producing stable electret consisting of crystalline high molecular weight material |
Country Status (6)
Country | Link |
---|---|
US (1) | US3691264A (de) |
JP (1) | JPS497959B1 (de) |
CA (1) | CA923846A (de) |
DE (1) | DE2035383C3 (de) |
FR (1) | FR2051817B1 (de) |
GB (1) | GB1269009A (de) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3931446A (en) * | 1970-09-26 | 1976-01-06 | Kureha Kagaku Kogyo Kabushiki Kaisha | Process for producing polymeric piezoelectric elements and the article formed thereby |
US4204135A (en) * | 1970-12-02 | 1980-05-20 | Kureha Kagaku Kogyo Kabushiki Kaisha | Piezoelectric elements of organic high molecular weight materials |
JPS5146919B1 (de) * | 1971-02-09 | 1976-12-11 | ||
CA992738A (en) * | 1971-04-08 | 1976-07-13 | Naohiro Murayama | Pyroelectric element of polymer film |
GB1367738A (en) * | 1971-07-20 | 1974-09-25 | Kureha Chemical Ind Co Ltd | Process for the production of polyvinylidene fluoride resin film |
JPS5130595B2 (de) * | 1972-04-06 | 1976-09-01 | ||
NL160303C (nl) * | 1974-03-25 | 1979-10-15 | Verto Nv | Werkwijze voor het vervaardigen van een vezelfilter. |
JPS5569902A (en) * | 1978-11-21 | 1980-05-27 | Kureha Chemical Ind Co Ltd | Preparing piezoelectric* electrically scorchable film |
GB2045522B (en) * | 1979-04-03 | 1983-03-16 | Standard Telephones Cables Ltd | Piezo-electric film manufacture |
US4241128A (en) * | 1979-03-20 | 1980-12-23 | Bell Telephone Laboratories, Incorporated | Production of piezoelectric PVDF films |
JPS55157801A (en) * | 1979-04-26 | 1980-12-08 | Rikagaku Kenkyusho | Process for producing piezooelectric current collecting high molecular film |
US4349502A (en) * | 1980-10-24 | 1982-09-14 | The United States Of America As Represented By The Secretary Of The Navy | Fabrication method for unoriented phase-I PVF2 |
US4373224A (en) * | 1981-04-21 | 1983-02-15 | Duskinfranchise Kabushiki Kaisha | Method for manufacturing a duster and the duster manufactured therefrom |
FR2516442A1 (fr) * | 1981-11-16 | 1983-05-20 | Solvay | Procede et appareillage d'extrusion de films en polymeres d'olefines halogenees, utilisation comme films piezo-electriques, apres traitement de polarisation |
US4434114A (en) | 1982-02-04 | 1984-02-28 | Pennwalt Corporation | Production of wrinkle-free piezoelectric films by poling |
FR2522241A1 (fr) * | 1982-02-22 | 1983-08-26 | Thomson Csf | Procede de fabrication de transducteurs polymeres piezoelectriques par forgeage |
JPS6076214U (ja) * | 1983-10-31 | 1985-05-28 | 緒方 義郎 | 箱尺 |
US4808352A (en) * | 1985-10-03 | 1989-02-28 | Minnesota Mining And Manufacturing Company | Crystalline vinylidene fluoride |
US4830795A (en) * | 1986-07-03 | 1989-05-16 | Rutgers, The State University Of New Jersey | Process for making polarized material |
US5082616A (en) * | 1990-10-25 | 1992-01-21 | Edison Polymer Innovation Corp. | Film blowing process |
US5494617A (en) * | 1994-05-16 | 1996-02-27 | The United States Of America As Represented By The Secretary Of The Navy | Method of inducing piezoelectric properties in polymers |
CN1065983C (zh) * | 1996-12-31 | 2001-05-16 | 中国科学院长春应用化学研究所 | 聚偏氟乙烯压电薄膜的制备方法 |
US6068799A (en) * | 1997-10-01 | 2000-05-30 | 3M Innovative Properties Company | Method of making electret articles and filters with increased oily mist resistance |
TW539705B (en) * | 2000-06-30 | 2003-07-01 | Tonen Sekiyukagaku Kk | Process for preparing heat curable resin micro-porous film |
-
1969
- 1969-07-17 JP JP44056614A patent/JPS497959B1/ja active Pending
-
1970
- 1970-07-14 CA CA088095A patent/CA923846A/en not_active Expired
- 1970-07-15 GB GB34348/70A patent/GB1269009A/en not_active Expired
- 1970-07-16 DE DE2035383A patent/DE2035383C3/de not_active Expired
- 1970-07-16 US US55548A patent/US3691264A/en not_active Expired - Lifetime
- 1970-07-17 FR FR707026500A patent/FR2051817B1/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3691264A (en) | 1972-09-12 |
DE2035383C3 (de) | 1978-08-24 |
DE2035383B2 (de) | 1977-12-22 |
FR2051817B1 (de) | 1973-05-25 |
JPS497959B1 (de) | 1974-02-23 |
GB1269009A (en) | 1972-03-29 |
DE2035383A1 (de) | 1971-02-04 |
FR2051817A1 (de) | 1971-04-09 |
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