WO1995004101A1 - Kunststoff für die verwendung im vakuum - Google Patents
Kunststoff für die verwendung im vakuum Download PDFInfo
- Publication number
- WO1995004101A1 WO1995004101A1 PCT/EP1994/001679 EP9401679W WO9504101A1 WO 1995004101 A1 WO1995004101 A1 WO 1995004101A1 EP 9401679 W EP9401679 W EP 9401679W WO 9504101 A1 WO9504101 A1 WO 9504101A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- vacuum
- centering ring
- sections
- sealing ring
- centering
- Prior art date
Links
- 239000004033 plastic Substances 0.000 title claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 12
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 2
- 239000000654 additive Substances 0.000 claims description 2
- 239000012764 mineral filler Substances 0.000 claims description 2
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 238000010943 off-gassing Methods 0.000 abstract description 7
- 229920000106 Liquid crystal polymer Polymers 0.000 description 8
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 8
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004741 Tedur® Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- HJJVPARKXDDIQD-UHFFFAOYSA-N bromuconazole Chemical compound ClC1=CC(Cl)=CC=C1C1(CN2N=CN=C2)OCC(Br)C1 HJJVPARKXDDIQD-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 210000001170 unmyelinated nerve fiber Anatomy 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/02—Polythioethers
- C08G75/0204—Polyarylenethioethers
- C08G75/0209—Polyarylenethioethers derived from monomers containing one aromatic ring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/061—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with positioning means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
Definitions
- the invention relates to a vacuum-compatible plastic.
- EP-A-344 290 points to the problem of outgassing which exists when generating high vacuums.
- the surfaces of a vacuum pump, its internals or a vacuum component (valves, slide valves, lines, flanges, vapor barriers, etc.) exposed to vacuum release gases over a long period of time that have accumulated there at atmospheric pressure or are dissolved in the material.
- the generation of a high vacuum (about 10- * mbar and less) is possible the quicker the lower the outgassing rate of a material.
- Metals (aluminum, stainless steel) and also glass have relatively low outgassing rates. The process of degassing can be accelerated by baking out.
- LCP liquid crystal polymers
- the present invention is based on the object of proposing a vacuum-compatible plastic which, in addition to good outgassing properties, also has good processing properties.
- a material of this type comprises polyphenyl sulfide (PPS).
- PPS polyphenyl sulfide
- PLATON Hoechst
- TEDUR TEDUR
- Materials of this type do not have the disadvantages described with regard to processing and strength properties.
- PPS-containing materials have surprisingly low outgassing rates, some of which are lower than the outgassing rates of the previously known material LCP.
- PPS can be filled with common additives such as chalk, iron oxide, minerals, graphite, PTFE or the like and / or reinforced with glass fibers, C fibers, etc.
- mineral fillers improve the processability and have an influence on the surface and thus on the initial rate.
- FIGS. 1, 2 and 4 each show sections through different embodiments of a centering ring according to the invention, each with sealing rings held thereby.
- FIG. 3 shows a top view of an embodiment of the centering ring according to FIG. 2.
- the centering rings 1 shown have projections 2 and 3 in the region of their end faces which, in the installed state, do not show those to be connected to one another Grasp the flanges and thereby achieve the desired centering.
- the inner surface 4 of the centering ring 1 according to FIG. 1 has an essentially cylindrical shape with respect to the axis 5.
- projections or beads 6 and 7 are provided.
- the projections labeled 6 are each in the lower region (based on the position of the centering ring 1 shown) and the projections labeled 7 are each arranged in the upper region of the inner cylinder surface 4. This creates 8 support edges for the inserted sealing ring, which lie alternately on different sides of the ring 8 and thereby hold it as a whole in its position shown.
- the inner surface 4 no longer has an undercut, so that the inner surface 4 can simply be produced - injection molded -.
- surface sections 11 and 12 which are inclined with respect to the axis 5 (preferably at an angle ⁇ »20 ° with respect to the axis 5) are provided.
- the inclination of the surface sections 11 causes them to support the sealing ring 8 from below (again with reference to the position of the centering ring 1 shown), while the inclination of the surface sections 12 causes the sealing ring to be supported from above.
- FIG. 4 shows an exemplary embodiment of a centering ring 1 according to the invention, which serves for the inner centering of the sealing ring 8.
- the front projections 2 and 3 engage in the flanges (not shown) to be connected to one another and bring about the desired centering.
- the edge surface holding the sealing ring 8 has the shape of a partial cylinder on average and is adapted to the sealing ring 8, which is round in section.
- FIGS. 1 to 3 can also be provided with similar designs for holding the sealing ring 8.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Gasket Seals (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94918784A EP0711316A1 (de) | 1993-07-28 | 1994-05-26 | Kunststoff für die verwendung im vakuum |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4325287.7 | 1993-07-28 | ||
DE4325287A DE4325287A1 (de) | 1993-07-28 | 1993-07-28 | Kunststoff für die Verwendung im Vacuum |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995004101A1 true WO1995004101A1 (de) | 1995-02-09 |
Family
ID=6493896
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1994/001679 WO1995004101A1 (de) | 1993-07-28 | 1994-05-26 | Kunststoff für die verwendung im vakuum |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0711316A1 (de) |
DE (1) | DE4325287A1 (de) |
WO (1) | WO1995004101A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10356484B4 (de) * | 2003-12-03 | 2010-07-15 | Friedrich Linnemann | Verbindung |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0041906A1 (de) * | 1980-06-02 | 1981-12-16 | Curty | Zylinderkopfdichtung für Brennkraftmaschine |
EP0087046A1 (de) * | 1982-02-19 | 1983-08-31 | Bayer Ag | Verfahren zur Herstellung von Polyarylensulfiden mit erhöhter thermischer und chemischer Belastbarkeit |
EP0401518A2 (de) * | 1989-05-18 | 1990-12-12 | BASF Aktiengesellschaft | Dichtungselemente und Gleitlager aus faserverstärkten Kunststoffen |
EP0436132A2 (de) * | 1989-12-15 | 1991-07-10 | Bayer Ag | Verfahren zur Erniedrigung der Kristallisationstemperatur von Polyarylensulfiden |
DE4111110A1 (de) * | 1990-04-06 | 1991-10-10 | Hitachi Ltd | Rotationskolbenmaschine in schraubenbauweise sowie verfahren zur oberflaechenbehandlung ihrer rotoren |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7244501U (de) * | 1973-03-01 | Brand R | Zentrierring für Flanschverbindungen der Vakuumtechnik | |
DE1042315B (de) * | 1955-01-17 | 1958-10-30 | Leybolds Nachfolger E | Verbindung fuer Rohre mit Flanschen mit ebenen Stirnflaechen in Hochvakuumleitungen |
DE1868895U (de) * | 1963-01-15 | 1963-03-14 | Leybold Nachfolger E | Flanschdichtung mit hohem anpressdruck. |
CH550353A (de) * | 1972-04-07 | 1974-06-14 | Balzers Patent Beteilig Ag | Dichtungselement fuer flanschverbindungen. |
DE2416808B2 (de) * | 1974-04-06 | 1977-11-03 | Leybold-Heraeus GmbH & Co KG, 5000 Köln | Vakuumdichtung |
DE3209525A1 (de) * | 1981-07-10 | 1983-01-27 | Siemens AG, 1000 Berlin und 8000 München | Stabilisierung von polyphenylensulfid gegen korrosive ausgasungen |
SU1470749A1 (ru) * | 1987-05-04 | 1989-04-07 | Кузбасский Политехнический Институт | Полимерна композици |
FR2628172B1 (fr) * | 1988-03-04 | 1991-01-11 | Commissariat Energie Atomique | Porte-joint utilisable pour placer des joints a des raccordements de tuyaux a collier de serrage |
DE3915067A1 (de) * | 1989-05-09 | 1990-11-15 | Bayer Ag | Leichtfliessende polyarylensulfid-formmassen |
-
1993
- 1993-07-28 DE DE4325287A patent/DE4325287A1/de not_active Withdrawn
-
1994
- 1994-05-26 EP EP94918784A patent/EP0711316A1/de not_active Withdrawn
- 1994-05-26 WO PCT/EP1994/001679 patent/WO1995004101A1/de not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0041906A1 (de) * | 1980-06-02 | 1981-12-16 | Curty | Zylinderkopfdichtung für Brennkraftmaschine |
EP0087046A1 (de) * | 1982-02-19 | 1983-08-31 | Bayer Ag | Verfahren zur Herstellung von Polyarylensulfiden mit erhöhter thermischer und chemischer Belastbarkeit |
EP0401518A2 (de) * | 1989-05-18 | 1990-12-12 | BASF Aktiengesellschaft | Dichtungselemente und Gleitlager aus faserverstärkten Kunststoffen |
EP0436132A2 (de) * | 1989-12-15 | 1991-07-10 | Bayer Ag | Verfahren zur Erniedrigung der Kristallisationstemperatur von Polyarylensulfiden |
DE4111110A1 (de) * | 1990-04-06 | 1991-10-10 | Hitachi Ltd | Rotationskolbenmaschine in schraubenbauweise sowie verfahren zur oberflaechenbehandlung ihrer rotoren |
Also Published As
Publication number | Publication date |
---|---|
EP0711316A1 (de) | 1996-05-15 |
DE4325287A1 (de) | 1995-02-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2909223C2 (de) | Dichtvorrichtung für Vakuumverbindungen | |
DE102008003725A1 (de) | Vakuum-Ventil mit Dichtring | |
DE60218148T2 (de) | Geschlossene metalldichtung mit dezentrierten vorsprüngen | |
DE2315870B2 (de) | Vakuum-Rückschlagventil | |
DE2612810C3 (de) | Herzklappenprothese | |
WO1995004101A1 (de) | Kunststoff für die verwendung im vakuum | |
DE3935295C2 (de) | ||
DE2308293A1 (de) | Kegelventil und verschlussdichtung fuer ein solches ventil | |
DE2919958A1 (de) | Zwischen flanschen u.dgl. anzuordnende profil-flachdichtung | |
DE19654357A1 (de) | Dichtungsanordnung | |
DE10059954B4 (de) | Rückschlagventil | |
DE102008008575B4 (de) | Dichtring, dessen Verwendung und Werkzeug zu seiner Herstellung | |
DE202017100199U1 (de) | Heizungs-, Lüftungs- und/oder Klimatisierungsvorrichtung für ein Kraftfahrzeug | |
DE2436348A1 (de) | Ventil | |
DE4224145C2 (de) | Verfahren zur Herstellung eines Schließklobens für einen Kraftfahrzeug-Türverschluß | |
EP2025967A2 (de) | Dämpfungselement in Form eines zylindrischen Hohlkörpers und Verfahren zur Herstellung | |
DE2933881C2 (de) | ||
EP2726720B1 (de) | Verfahren zum spaltlosen montagespritzen zweier komponenten sowie klappenvorrichtung für eine verbrennungskraftmaschine | |
DE102023204506A1 (de) | Fluidventil sowie Ventilgehäuse und Ventileinsatz für ein Fluidventil | |
EP3722642B1 (de) | Absperrklappe | |
CH600209A5 (en) | Gas-tight ceramic ball valve | |
DE8425525U1 (de) | Kunststoffdichtring, insbesondere aus Polytetrafluorethylen, für Glasverbindungen | |
DE10217468A1 (de) | Vorrichtung und Verfahren zum Verschließen eines Strömungskanals sowie schwenkbare Absperr- und/oder Drosselklappe | |
EP4428015A1 (de) | Verfahren zur beschädigungsfreien montage und/oder demontage zweier durch verrastung miteinander verbindbarer kraftfahrzeug-bauteile | |
DE102022116238A1 (de) | Rückschlagventil für einen Kompressor eines Kraftfahrzeugs, Kompressor sowie betreffende Verwendung |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1994918784 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref country code: US Ref document number: 1996 586849 Date of ref document: 19960124 Kind code of ref document: A Format of ref document f/p: F |
|
WWP | Wipo information: published in national office |
Ref document number: 1994918784 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref country code: US Ref document number: 1997 939502 Date of ref document: 19970929 Kind code of ref document: A Format of ref document f/p: F |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1994918784 Country of ref document: EP |