DE1196790B - Traenklack for coil winding of electrical machines and devices - Google Patents
Traenklack for coil winding of electrical machines and devicesInfo
- Publication number
- DE1196790B DE1196790B DEL41406A DEL0041406A DE1196790B DE 1196790 B DE1196790 B DE 1196790B DE L41406 A DEL41406 A DE L41406A DE L0041406 A DEL0041406 A DE L0041406A DE 1196790 B DE1196790 B DE 1196790B
- Authority
- DE
- Germany
- Prior art keywords
- electrical machines
- butadiene
- traenklack
- devices
- coil winding
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/30—Windings characterised by the insulating material
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D109/00—Coating compositions based on homopolymers or copolymers of conjugated diene hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D161/00—Coating compositions based on condensation polymers of aldehydes or ketones; Coating compositions based on derivatives of such polymers
- C09D161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Organic Insulating Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
Tränklack für Spulenwicklung elektrischer Maschinen und Apparate Es ist bekannt, Tränklacke für elektrische Maschinen und Apparate aus Kombinationen von Phenolharz mit Alkydharz aufzubauen. Derartige Tränklacke zeigen eine gute Durchtränkung, besitzen eine ausreichende Elastizität und weisen auch eine ausreichende Durchschlagsfestigkeit auf. Bezüglich der Kriechstromfestigkeit lassen sie jedoch noch zu wünschen übrig.Impregnating varnish for coil winding of electrical machines and apparatus Es is known, impregnating varnishes for electrical machines and apparatus from combinations build up of phenolic resin with alkyd resin. Such impregnating varnishes show good impregnation, have sufficient elasticity and also have sufficient dielectric strength on. However, they still leave something to be desired in terms of tracking resistance.
Ferner sind als Tränklacke für elektrische Maschinen und Apparate Kombinationen aus ölhaltigen Phthalatharzen mit Carbamid- oder Melaminharzen bekanntgeworden, die aber den Nachteil aufweisen, daß die aufgebrachte Lackschicht bei erhöhter Temperatur sehr schnell oberflächlich aushärtet und dadurch im Inneren Lösungsmittel zurückbleiben, die später zur Blasenbildung Anlaß geben. Die Lackschicht bildet dadurch eine inhomogene Isolationsschicht, die in elektrischer Hinsicht unzureichend ist.They are also used as impregnating varnishes for electrical machines and apparatus Combinations of oily phthalate resins with carbamide or melamine resins become known, but which have the disadvantage that the applied lacquer layer at elevated temperature hardens very quickly on the surface and therefore solvent remains inside, which later give rise to the formation of bubbles. As a result, the lacquer layer forms an inhomogeneous one Insulation layer which is insufficient from an electrical point of view.
Schließlich sind Drahtlacke aus einer Kombination von Butadien-Styrol-Polymerisat und von Melaminharz bekanntgeworden.Finally, wire enamels are made from a combination of butadiene-styrene polymer and made famous by melamine resin.
Aus Drahtlacken werden dünne 17berzugsfilme gebildet; die Anforderungen, die an Drahtlacke gestellt werden, unterscheiden sich wesentlich von denen, die an Tränklacke gestellt werden, so daß der Aufbau eines Drahtlackes im allgemeinen keine Anregung zur Lösung von Problemen vermittelt, die Tränklacken zugrunde liegen. Von Tränklacken ist vor allem eine genügende Verbackungsfestigkeit für die Wicklungen zu fordern, wobei auch in elektrischer Hinsicht eine homogene Isolationsschicht zu fordern ist.Thin coating films are formed from wire enamels; the requirements, that are placed on wire enamels differ significantly from those that to be placed on impregnating varnish, so that the structure of a wire enamel in general no suggestion for solving problems based on impregnating varnishes. Above all, impregnating varnishes require sufficient caking strength for the windings to demand, with a homogeneous insulation layer also from an electrical point of view is to be demanded.
Es wurde nun gefunden, daß man zu einem Tränklack für elektrische Maschinen und Aparate gelangen kann, der neben den vorgenannten zu fordernden Eigenschaften auch eine außerordentlich gute Kriechstromfestigkeit aufweist und in dielektrischer Hinsicht den an ihn zu stellenden Forderungen genügt.It has now been found that an impregnating varnish for electrical Machines and apparatus can get in addition to the aforementioned properties to be demanded also has an extremely good tracking resistance and in dielectric With regard to the demands to be made on him.
Gegenstand der Erfindung ist die Verwendung einer Kombination aus Butadien-Styrol-Copolymerisat, vorzugsweise aus 80 % Butadien und 20 0/0 Styrol, und aus Harnstoff- oder/und Melaminharz als Tränklack für Spulenwicklungen elektrischer Maschinen und Apparate. An Stelle des Styrol im Copolymerisat können in bestimmten Fällen auch andere vinylhaltige Monomere im Mischpolymerisat Anwedung finden, z. B. Vinyltoluol, Methylmethacrylat, Diallylphthalat oder Triallylcyanurat, um die Eigenschaften der Tränklacke zu modifizieren.The invention relates to the use of a combination of Butadiene-styrene copolymer, preferably made of 80% butadiene and 20 0/0 styrene, and made of urea and / or melamine resin as impregnating varnish for electrical coil windings Machines and apparatus. Instead of styrene in the copolymer, certain Cases also find other vinyl-containing monomers in the copolymer application, z. B. vinyl toluene, methyl methacrylate, diallyl phthalate or triallyl cyanurate to the To modify the properties of the impregnating varnishes.
Als zweckmäßig hat sich ein Anteil von 30 bis 80 % des Copolymerisats, bezogen auf die gesamte Harzmenge, erwiesen. Nach den zu stellenden Anforderungen kann das Verhältnis der Zusatzkomponenten von Melaminharz bzw. Harnstoffharz variiert werden. Jedoch werden vorteilhaft 20 bis 70 0/0 Melaminharz und/oder Harnstoffharz dem Tränklack zugegeben, um eine genügende elektrische und mechanische Festigkeit zu erhalten. Höhere Zusätze an Melaminharz bzw. Harnstoffharz verschlechtern die dielektrischen Eigenschaften und führen zur Versprödung in dicken Schichten. Beispiel 70 Teile eines Copolymerisates aus Butadien und Styrol im Verhältnis 80: 20 in 50o/oiger Lösung von Isopropanol, 15 Teile Melaminharz, 15 Teile Harnstoffharze, 2 Teile Dipenten und 1 Teil Triäthylamin.A proportion of 30 to 80% of the copolymer, based on the total amount of resin, has proven to be expedient. The ratio of the additional components of melamine resin or urea resin can be varied according to the requirements to be met. However, 20 to 70% melamine resin and / or urea resin are advantageously added to the impregnating varnish in order to obtain sufficient electrical and mechanical strength. Higher additions of melamine resin or urea resin worsen the dielectric properties and lead to embrittlement in thick layers. Example 70 parts of a copolymer of butadiene and styrene in the ratio 80: 20 in 50o / cent, solution of isopropanol, 15 parts melamine resin, 15 parts of urea resins, 2 parts of dipentene and 1 part of triethylamine.
Geringe Zusätze von hochsiedenden Kohlenwasserstoffen und kleineren Mengen von Triäthylamin gewährleisten in bekannter Weise ein blasenfreies Durchtränken bzw. Aushärten des Tränklackes in dicker Schicia.Small additions of high-boiling hydrocarbons and smaller ones Quantities of triethylamine ensure bubble-free impregnation in a known manner or hardening of the impregnating varnish in thick Schicia.
Der Tränklack nach der vorliegenden Erfindung weist eine Kriechstromfestigkeit der Stufe T-5 nach Din 53480 auf und zeigt auch iin weiten Temperaturbereich nur einen geringen Anstieg der dielektrischen Werte. Er eignet sich zum Tränken von Spulenwicklungen für elektrische Maschinen der Wärmeklasse B. Ein während 10 Stunden bei 120° C eingebrannter Lackfilm besitzt eine außerordentlich gute Beständigkeit gegen Lösungsmittel, insbesondere auch gegen Aromaten. Der Tränklack läßt sich ohne Geruchsbelästigung verarbeiten. Die Trockenzeit istThe impregnating varnish according to the present invention has a tracking resistance of level T-5 according to Din 53480 and also only shows a wide temperature range a small increase in dielectric values. It is suitable for soaking Coil windings for electrical machines of thermal class B. On for 10 hours A lacquer film baked at 120 ° C has an extraordinarily good resistance against solvents, especially against aromatics. The impregnating varnish can be used without Process odor nuisance. The dry season is
Claims (1)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL41406A DE1196790B (en) | 1962-03-07 | 1962-03-07 | Traenklack for coil winding of electrical machines and devices |
GB894763A GB989308A (en) | 1962-03-07 | 1963-03-06 | Insulating varnish for electrical machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL41406A DE1196790B (en) | 1962-03-07 | 1962-03-07 | Traenklack for coil winding of electrical machines and devices |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1196790B true DE1196790B (en) | 1965-07-15 |
Family
ID=7269432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEL41406A Pending DE1196790B (en) | 1962-03-07 | 1962-03-07 | Traenklack for coil winding of electrical machines and devices |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE1196790B (en) |
GB (1) | GB989308A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB794636A (en) * | 1955-06-24 | 1958-05-07 | Exxon Research Engineering Co | Improved baking varnish and paint composition |
-
1962
- 1962-03-07 DE DEL41406A patent/DE1196790B/en active Pending
-
1963
- 1963-03-06 GB GB894763A patent/GB989308A/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB794636A (en) * | 1955-06-24 | 1958-05-07 | Exxon Research Engineering Co | Improved baking varnish and paint composition |
Also Published As
Publication number | Publication date |
---|---|
GB989308A (en) | 1965-04-14 |
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