CH498479A - Verfahren zur Herstellung von Elektreten - Google Patents
Verfahren zur Herstellung von ElektretenInfo
- Publication number
- CH498479A CH498479A CH1528866A CH1528866A CH498479A CH 498479 A CH498479 A CH 498479A CH 1528866 A CH1528866 A CH 1528866A CH 1528866 A CH1528866 A CH 1528866A CH 498479 A CH498479 A CH 498479A
- Authority
- CH
- Switzerland
- Prior art keywords
- electret
- temperature
- electrets
- charge
- rollers
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 41
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 41
- 230000005684 electric field Effects 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 11
- -1 polyethylene terephthalate Polymers 0.000 claims description 44
- 230000009477 glass transition Effects 0.000 claims description 7
- 238000007710 freezing Methods 0.000 claims description 4
- 230000008014 freezing Effects 0.000 claims description 4
- 238000001816 cooling Methods 0.000 abstract description 17
- 125000005842 heteroatom Chemical group 0.000 description 17
- 239000011888 foil Substances 0.000 description 15
- 229910052782 aluminium Inorganic materials 0.000 description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 14
- 239000000126 substance Substances 0.000 description 14
- 230000005855 radiation Effects 0.000 description 8
- 229910001220 stainless steel Inorganic materials 0.000 description 8
- 239000010935 stainless steel Substances 0.000 description 8
- 239000003990 capacitor Substances 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000010924 continuous production Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229920002845 Poly(methacrylic acid) Polymers 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229920001871 amorphous plastic Polymers 0.000 description 2
- 235000013871 bee wax Nutrition 0.000 description 2
- 239000012166 beeswax Substances 0.000 description 2
- 235000013869 carnauba wax Nutrition 0.000 description 2
- 239000004203 carnauba wax Substances 0.000 description 2
- 239000013068 control sample Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 2
- 150000004702 methyl esters Chemical class 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 235000012431 wafers Nutrition 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- AOWKSNWVBZGMTJ-UHFFFAOYSA-N calcium titanate Chemical compound [Ca+2].[O-][Ti]([O-])=O AOWKSNWVBZGMTJ-UHFFFAOYSA-N 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229920001887 crystalline plastic Polymers 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 229910052699 polonium Inorganic materials 0.000 description 1
- HZEBHPIOVYHPMT-UHFFFAOYSA-N polonium atom Chemical compound [Po] HZEBHPIOVYHPMT-UHFFFAOYSA-N 0.000 description 1
- 229920002493 poly(chlorotrifluoroethylene) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Filtering Materials (AREA)
- Artificial Filaments (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US50398365A | 1965-10-23 | 1965-10-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH498479A true CH498479A (de) | 1970-10-31 |
Family
ID=24004358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1528866A CH498479A (de) | 1965-10-23 | 1966-10-21 | Verfahren zur Herstellung von Elektreten |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT291404B (it) |
| BE (1) | BE688615A (it) |
| CH (1) | CH498479A (it) |
| ES (1) | ES332637A2 (it) |
| GB (1) | GB1135413A (it) |
| LU (1) | LU52224A1 (it) |
| NL (1) | NL6614505A (it) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2657536A1 (de) * | 1975-12-29 | 1977-06-30 | Mitsubishi Petrochemical Co | Piezoelektrisches material und verfahren zu seiner herstellung |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7907539A (nl) * | 1979-10-11 | 1981-04-14 | Tno | Werkwijze voor het vervaardigen van elektreten. |
-
1966
- 1966-10-14 NL NL6614505A patent/NL6614505A/xx unknown
- 1966-10-19 GB GB4676766A patent/GB1135413A/en not_active Expired
- 1966-10-20 BE BE688615D patent/BE688615A/xx unknown
- 1966-10-21 LU LU52224D patent/LU52224A1/xx unknown
- 1966-10-21 CH CH1528866A patent/CH498479A/de not_active IP Right Cessation
- 1966-10-22 ES ES0332637A patent/ES332637A2/es not_active Expired
- 1966-11-20 AT AT979066A patent/AT291404B/de not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2657536A1 (de) * | 1975-12-29 | 1977-06-30 | Mitsubishi Petrochemical Co | Piezoelektrisches material und verfahren zu seiner herstellung |
Also Published As
| Publication number | Publication date |
|---|---|
| NL6614505A (it) | 1967-04-24 |
| ES332637A2 (es) | 1967-12-01 |
| GB1135413A (en) | 1968-12-04 |
| LU52224A1 (it) | 1966-12-21 |
| AT291404B (de) | 1971-06-15 |
| BE688615A (it) | 1967-03-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |