• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The permanent electric polarization is imparted to the sensitive element by electronic bombardment within an enclosure wherein prevails a rarefied atmosphere and in which said bombardment is followed with a coating of the so-polarized sensitive element with a film of liquid of very low saturated vapor pressure whose dielectric strength is higher than that of the rarefied air of the enclosure and having advantageously lubricating properties.
    公开号:SU1303046A3
    申请号:SU792784256
    申请日:1979-07-12
    公开日:1987-04-07
    发明作者:Дюбуа Жан-Клод；Делонай Ален
    申请人:Энститю Франсэ Дю Петроль (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to a device for the manufacture of electrets, i.e. preparing charged elements, which are quenched by constant electric polarization.
    The purpose of the invention is to avoid the destruction of the electric charge produced by polarized tapes brought to normal pressure and to facilitate their winding.
    The protective substance remains liquid at very low pressures in the vacuum chamber due to its very low saturated vapor pressure. At the moment when the chamber returns to normal pressure, the polarized element is in contact with a dielectric fluid, the electrical strength of which is higher than that of rarefied air, and the investigator is protected from ionization and the destruction of electrical charge. Thus, the transition of highly charged electrets from ultra-high vacuum to normal pressure can be accomplished without noticeable destruction.
    The presence of a lubricating dielectric type of silicone oil on the charged element allows winding without folds and ensures a good arrangement of the turns on the receiving coils. The capacity of the receiving coils is used to the maximum.

    Figure 1 shows the first embodiment of the device; 2-4 the same, embodiments; Fig. 5 shows a second embodiment of the device.
    The device (Fig. 1) contains a vacuum chamber 1 communicating via an opening 2 with a vacuum pump of a known type (not shown). The camera has a tubular part 3 inside which an electron gun 4 is mounted. Focusing system 5 allows the electron beam to be focused into the plane in which the chargeable element is located. The system of correction coils 6 allows the beam to be controlled according to the law of predetermined refraction.
    The device works as follows.
    The charging tape is wound on the feed reel 7, transferred to the take-up reel 8 driven by the pin roller 9, the passage
    to
    15
    20
    25
    thirty
    35
    40
    first, through two rolls 10 arranged in such a way that it passes perpendicular to the electron beam in the focusing plane of the latter.
    The belt passes through the drive drum 11, which determines the speed of passage, and then through the roller 12, immersed in a tank or tank 13 containing a protective dielectric fluid, for example, in the form of a special oil for ultrahigh vacuum, the pressure of which is very slight, and electrical strength is not less than the strength of rarefied air. A liquid is used, the pressure of a saturated vapor of which is 6.6 ID S- 1.3-, and the electrical strength is 10 Ω-cm, for example silicone oil, the saturated vapor pressure of which is 1.3-10 Pa, and the electrical strength - Yu Ohm-see
    A heating system, containing, for example, electrical resistances 14, is immersed in reservoir 13. The tape is wound onto a receiving coil 8 after being immersed in oil. The metal pressure roller 15 is positioned adjacent to the feed point of the tape on the take-up reel 8, which contributes to increasing the quality of stacking the turns on each other.
    The operation of charging the tape is preceded by a preparatory phase, during which a protective liquid is poured into the tank, and a strong vacuum is established in chamber 1. The liquid is heated to degas it to a temperature of, for example, on the order until the residual pressure in the chamber drops to 1.310.
    The fluid is then cooled and the ribbon passing system is turned on. If a pressure increase above 1.3 Pa is noted. Inside the chamber, stop the flow belts to resume a new degassing cycle.
    When degassing is sufficient, i.e. when no increase in pressure is observed when the transmission system is turned on, electrons are bombarded by the polarization of the ribbon.
    When a sufficient amount of tape is charged, the inner part of the chamber is gradually brought into communication with the external environment at atmospheric pressure, and the receiving coil is disconnected and removed from the chamber. Transition rate from rarefied atmosphere3
    The pressure to external pressure is not critical and does not cause a noticeable depolarization of the charged tape.
    When performing the device (Fig. Receiving coil 8 at least

    partially immersed in a reservoir containing protective lubricating fluid.
    Variants of the first embodiment (Figures 2-4) relate to three different systems for impregnating the charged tape 16 before winding it onto the receiving case. In the first embodiment (Fig. 2), the reservoir 13 containing the lubricating fluid is located above the belt 16. The liquid is supplied through the tube 17 from the reservoir 13 to, for example, a felt tampon 18 pressed to the belt 16.
    According to the second variant (fig. 3) of the reserve-20 chesky liquid.
    The vuar 13 is located under the belt 16, and the tampon 18 is nourished by capillary through the wick 19.
    In the third variant (Fig. 4), the charged tape 16 is soaked in a lubricated one, so that the node is injected with liquid by means of contact with a roller 20. Oil is supplied to it with the help of a roller 21 immersed in a container with liquid by means of two rollers 22 and 23 in contact with them.
    权利要求:
    Claims (3)
    [1]
    Invention Formula
    1. A device for the manufacture of an electret, comprising a fastening unit for the charging tape, located inside the vacuum chamber, an electrical polarization unit with an electron gun, and a tape rewinding unit;
    four
    Now, in order to increase the stability of the ribbon charge and simplify the winding process, it is equipped with a tank for a dielectric liquid in the form of a tank located in a vacuum chamber and a unit for applying it to a charged tape, the pressure of the saturated vapor of the dielectric liquid is 6.640 -1 ,, and the specific volume resistance Ohm - cm,
    2. The device as claimed in claim 1, wherein the application unit contains a tampon and an impregnation unit for this tampon with a dielectric liquid,
    [2]
    3. A device according to claim 2, characterized in that the tampon impregnation unit comprises a system of channels connected to a container for dielectric 4. The device according to claim 2, characterized in that the tampon impregnation unit contains a wick.
    [3]
    5, The device according to claim 1, about 1 ml of a dielectric fluid contains a system of rolls in contact with each other, with one of them immersed in a container of dielectric fluid, and the other in contact with the charged tape.
    6. The device according to claim 1, characterized in that the charged tape is at least partially immersed in a container with a dielectric liquid.
    7. The device according to paragraphs. 2-6, which is based on the fact that silicone oil is used as the dielectric fluid.
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    Editor O. Bugir
    Compiled by V. Murtazin TehredL.Oleinik Proofreader T. Kolb
    1229/58
    Circulation 699 Subscription
    VNIIPI USSR State Committee
    for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5
    Production and printing company, Uzhgorod, st. Project, 4
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    同族专利:
    公开号 | 公开日
    DE2729904A1|1978-01-12|
    JPS5335199A|1978-04-01|
    CA1081864A|1980-07-15|
    AU507205B2|1980-02-07|
    IT1076079B|1985-04-22|
    DE2729904C2|1987-08-06|
    FR2357998B1|1978-12-29|
    US4261287A|1981-04-14|
    AU2656077A|1979-01-04|
    NL182260C|1988-02-01|
    FR2357998A1|1978-02-03|
    NO772330L|1978-01-06|
    DK297377A|1978-01-06|
    SE417467B|1981-03-16|
    DK154249B|1988-10-24|
    BE856352A|1978-01-02|
    NL7707457A|1978-01-09|
    GB1557915A|1979-12-19|
    SE7707738L|1978-01-06|
    NO144984C|1981-12-16|
    DK154249C|1989-03-28|
    NL182260B|1987-09-01|
    NO144984B|1981-09-07|
    US4173659A|1979-11-06|
    JPS606536B2|1985-02-19|
    ES460440A1|1979-05-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2904481A|1955-06-29|1959-09-15|Gen Electric|Solid state polymerization|
    US2989633A|1956-02-08|1961-06-20|Standard Oil Co|Apparatus and process for radiation|
    US2955953A|1956-06-05|1960-10-11|Du Pont|Process of adhering an organic coating to a polymeric substrate|
    BE561742A|1956-10-18|
    US3081485A|1958-11-20|1963-03-19|Steigerwald Karl Heinz|Process and apparatus for treating synthetic plastic materials|
    US3565780A|1966-09-12|1971-02-23|Du Pont|Process for the preparation of graft copolymers using repetitive irradiation and contacting steps|
    US3501390A|1966-10-03|1970-03-17|Ford Motor Co|Process for electrocoating and polymerizing by radiation|
    GB1302590A|1969-09-10|1973-01-10|
    US3967027A|1969-12-19|1976-06-29|Kureha Kagaku Kogyo Kabushiki Kaisha|Stable electret retaining a high surface potential and method of making the same|
    US3711941A|1970-11-02|1973-01-23|Bell Telephone Labor Inc|Fabrication of electret transducer elements using low energy electron beam|
    US3664605A|1970-11-23|1972-05-23|Eastman Kodak Co|Reversible web transporting apparatus|
    US3846521A|1971-02-03|1974-11-05|Union Carbide Corp|Low energy electron beam treatment of polymeric films, and apparatus therefore|
    FR2144933A5|1971-07-02|1973-02-16|Anvar|
    CH571038A5|1972-07-24|1975-12-31|Bbc Brown Boveri & Cie|US4370182A|1981-03-16|1983-01-25|Gte Products Corporation|Method of making tape transducer|
    JPH05214A|1990-11-30|1993-01-08|Mitsui Petrochem Ind Ltd|Electret filter|
    US6659751B1|1998-08-12|2003-12-09|Ebara Corporation|Apparatus for radiation-induced graft polymerization treatment of fabric webs|
    US6846449B2|2001-09-07|2005-01-25|S. C. Johnson Home Storage, Inc.|Method of producing an electrically charged film|
    US6899931B2|2001-09-07|2005-05-31|S. C. Johnson Home Storage, Inc.|Film material|
    FR2892392B1|2005-10-25|2007-12-28|Sleever Internat Company Sa|ENVELOPE FOR THE PACKAGING OF AT LEAST ONE OBJECT, OF THE TYPE CONSISTING OF A SLEEVE OF PLASTIC THERMORETRACTABLE MATERIAL|
    CN112542683B|2020-12-09|2022-02-25|北京航空航天大学|Low-frequency signal transmitting antenna for satellite-borne|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR7620698A|FR2357998B1|1976-07-05|1976-07-05|
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