ES8305527A1 - Procedimiento para cargar un electreto. - Google Patents

Procedimiento para cargar un electreto.

Info

Publication number
ES8305527A1
ES8305527A1 ES512899A ES512899A ES8305527A1 ES 8305527 A1 ES8305527 A1 ES 8305527A1 ES 512899 A ES512899 A ES 512899A ES 512899 A ES512899 A ES 512899A ES 8305527 A1 ES8305527 A1 ES 8305527A1
Authority
ES
Spain
Prior art keywords
stability
teflon
positive
charge
excess
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
Application number
ES512899A
Other languages
English (en)
Other versions
ES512899A0 (es
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of ES512899A0 publication Critical patent/ES512899A0/es
Publication of ES8305527A1 publication Critical patent/ES8305527A1/es
Expired legal-status Critical Current

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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49226—Electret making

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Elimination Of Static Electricity (AREA)
  • Paper (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

PROCEDIMIENTO DE CARGA DE UN ELECTRODO. EL PROCEDIMIENTO PERMITE QUE UN MATERIAL DE ELECTRODO, INCLUYENDO POLIFLUORETILENPROPILENO (FEP) Y PLITETRAFLUORETILENO (PTFE), OBTENGA UNA CARGA POSITIVA INTERNA ESTABLE. PARA ELLO EL MATERIAL SE CARGA POR INYECCION DE CARGAS POSITIVAS, BIEN SOMETIENDOLO A UNA DESCARGA EN CORONA POSITIVA, BIEN MEDIANTE OTRA FUENTE DE IONES PARCIALMENTE PENETRANTES CARGADOS POSITIVAMENTE. LA CARGA SE REALIZA A TEMPERATURA NO INFERIOR A 100 C, PERO POR DEBAJO DE LA TEMPERATURA DE FUSION DEL MATERIAL. LA PROFUNDIDAD MEDIA DE LA CARGA RESULTA ASI SUPERIOR A 4 MICRAS POR DEBAJO DE LA SUPERFICIE DEL MATERIAL. EL PROCEDIMIENTO ADMITE TECNICAS DE CARGA CONVENCIONAL PARA OBTENER UNA CARGA SUPERFICIAL SOBRE EL MATERIAL.
ES512899A 1981-06-08 1982-06-07 Procedimiento para cargar un electreto. Expired ES8305527A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/271,671 US4527218A (en) 1981-06-08 1981-06-08 Stable positively charged Teflon electrets

Publications (2)

Publication Number Publication Date
ES512899A0 ES512899A0 (es) 1983-04-16
ES8305527A1 true ES8305527A1 (es) 1983-04-16

Family

ID=23036569

Family Applications (1)

Application Number Title Priority Date Filing Date
ES512899A Expired ES8305527A1 (es) 1981-06-08 1982-06-07 Procedimiento para cargar un electreto.

Country Status (8)

Country Link
US (1) US4527218A (es)
EP (1) EP0066878A3 (es)
JP (1) JPS58500879A (es)
CA (1) CA1176597A (es)
DE (1) DE66878T1 (es)
ES (1) ES8305527A1 (es)
GB (1) GB2100059A (es)
WO (1) WO1982004346A1 (es)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4767973A (en) * 1987-07-06 1988-08-30 Sarcos Incorporated Systems and methods for sensing position and movement
US4871352A (en) * 1987-12-07 1989-10-03 Controlled Release Technologies, Inc. Self-regulated therapeutic agent delivery system and method
JP2672329B2 (ja) * 1988-05-13 1997-11-05 東レ株式会社 エレクトレット材料
US5045747A (en) * 1990-02-28 1991-09-03 Industrial Technology Research Institute Apparatus for poling a piezoelectric ceramic
US5284692A (en) * 1991-10-24 1994-02-08 Bell Dennis J Electrostatic evacuated insulating sheet
FR2705827B1 (fr) * 1993-05-26 1995-08-11 Lewiner Jacques Perfectionnements aux dispositifs de fabrication des électrets et aux électrets obtenus.
ATA80098A (de) * 1998-05-12 1999-06-15 Johannes Dr Heitz Dünne elektretschichten und ein verfahren zu ihrer herstellung
US6432175B1 (en) 1998-07-02 2002-08-13 3M Innovative Properties Company Fluorinated electret
KR100469885B1 (ko) * 2002-07-30 2005-02-02 주식회사 비에스이 반도체 백-일렉트릿의 제조방법
EP2194549A1 (en) 2008-12-08 2010-06-09 Sony Corporation A method of producing an electret material
US8503702B2 (en) 2009-10-22 2013-08-06 Industrial Technology Research Institute Electret diaphragm and speaker using the same
RU2523337C1 (ru) * 2012-12-25 2014-07-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Российский государственный педагогический университет им. А.И. Герцена" Способ изготовления пленочного электрета
JP6293447B2 (ja) * 2013-10-03 2018-03-14 株式会社オーディオテクニカ 音響用静電型変換器、その固定極の製造方法およびコンデンサマイクロホン、コンデンサヘッドホン
RU2528618C1 (ru) * 2013-11-19 2014-09-20 федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Российский государственный педагогический университет им. А.И. Герцена" (РГПУ им. А.И. Герцена) Способ изготовления пленочного электрета
DE102017101950A1 (de) 2017-02-01 2018-08-02 Achim Limbeck Blutstillendes Material sowie Verfahren und Vorrichtung zu seiner Herstellung
WO2019161256A2 (en) 2018-02-15 2019-08-22 The Charles Stark Draper Laboratory, Inc. Electrostatic motor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3702493A (en) * 1967-05-15 1972-11-14 Thermo Electron Corp Method of making an electret
NL146969B (nl) * 1969-11-12 1975-08-15 Tno Verbetering van werkwijze voor het formeren van een eenzijdig gemetalliseerde elektreetfoelie.
US3705312A (en) * 1970-11-02 1972-12-05 Bell Telephone Labor Inc Preparation of electret transducer elements by application of controlled breakdown electric field
AU454024B2 (en) * 1970-12-16 1974-10-17 Amalgamated Wireless (Australasia Limited Improvements in electrets
US3950659A (en) * 1973-03-12 1976-04-13 Battelle Development Corporation Method of producing transducers with phase, area and depth controlled polarization
JPS5650408B2 (es) * 1973-07-05 1981-11-28
NL160303C (nl) * 1974-03-25 1979-10-15 Verto Nv Werkwijze voor het vervaardigen van een vezelfilter.
NL7907539A (nl) * 1979-10-11 1981-04-14 Tno Werkwijze voor het vervaardigen van elektreten.

Also Published As

Publication number Publication date
DE66878T1 (de) 1983-04-28
WO1982004346A1 (en) 1982-12-09
ES512899A0 (es) 1983-04-16
GB2100059A (en) 1982-12-15
EP0066878A3 (en) 1983-11-09
JPS58500879A (ja) 1983-05-26
US4527218A (en) 1985-07-02
CA1176597A (en) 1984-10-23
EP0066878A2 (en) 1982-12-15

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