EP1716580B1 - Method for producing coated electrical wires - Google Patents
Method for producing coated electrical wires Download PDFInfo
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- EP1716580B1 EP1716580B1 EP05707891A EP05707891A EP1716580B1 EP 1716580 B1 EP1716580 B1 EP 1716580B1 EP 05707891 A EP05707891 A EP 05707891A EP 05707891 A EP05707891 A EP 05707891A EP 1716580 B1 EP1716580 B1 EP 1716580B1
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- oxirane
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- 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
- H01B3/40—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 epoxy resins
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- 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
- H01B3/308—Wires with resins
Definitions
- the present invention relates to a process for producing coated electric wires.
- winding carriers used for the production of motors, solenoids, solenoids and generators are often exposed to strong mechanical loads. Especially with high-speed rotors, the resulting centrifugal and centripetal forces, which act on the windings of the moving components, quite considerable.
- windings are fixed at an early stage. This is done by impregnation with impregnating varnishes or impregnating resins.
- the impregnating varnishes or impregnating resins must be hardened. This is usually achieved by oven hardening the component at elevated temperatures over an extended period of time.
- baked enamels which were particularly in the field of deflection coil production in the TV technology made their entry.
- the principle of the baked coatings is based on the thermoplastic property, which allows bonding of the finished painted wires after winding the coil.
- the baked enamel layer which is expediently applied over an existing base insulation of the enameled wire, is first melted, wherein the interwinding spaces are partially filled with the molten thermoplastic and thus glue the individual windings over the thermoplastic.
- EP 1 096 510 the use of polyvinyl acetals (PVA) is described.
- PVA polyvinyl acetals
- the DE 28 43 895 C3 relates to the curing of successive wire enamel layers by means of UV light.
- the described goal was in particular the avoidance of the solvents.
- the object of the present invention is to provide a baked enamel which is solvent-free and curable by UV light.
- the baked coatings according to the invention are free from solvents of any kind, with water also counting as solvent.
- Suitable for the production of baked enamels is 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxylate, which is available under the name "Cyracure UVR 6110" from Union Carbide Corporation.
- Suitable aromatic dicarboxylic acids and / or dicarboxylic acid dimethyl esters are, for example, isophthalic acid, terephthalic acid, terephthalic acid dimethyl ester, naphthalenedicarboxylic acid dimethyl ester. Particularly preferred are isophthalic acid and dimethyl terephthalate.
- Suitable aliphatic dicarboxylic acids are, for example, adipic acid, azelaic acid and decanedicarboxylic acid, with adipic acid being particularly preferred.
- Suitable polyols include ethylene glycol, propylene glycol, neopentyl glycol and 1,4-butanediol. Mixtures of ethylene glycol and neopentyl glycol have proven particularly advantageous for the described application.
- Suitable UV crosslinking catalyst b) is preferably a photoinitiator suitable for cationic photopolymerization, or an initiator mixture.
- Preferred for the baked enamines of the present invention is the mixed arylsulfonium hexafluorophosphate salt of the following form used.
- component b) may also contain other customary UV crosslinking catalysts.
- reactive diluents c preference is given to low molecular weight oxiranes, oxetanes and the like. into consideration with the oxiranes according to the invention copolymerizable compounds.
- polyester polyols having molecular weights between 500 and 2000 g / mol are advantageous, preferably polyester polyols having an average molecular weight between 500 and 1000 g / mol.
- leveling agents e it is possible to use surface-modified polydisiloxanes, for example the "Byk 306" from Byk Chemie GmbH.
- Example 1 Preparation of a dioxirane from polyethylene glycol 400 and methyl 3,4-epoxycyclohexanecarboxylate (dioxirane I)
- 31.2 g of methyl 3,4-epoxycyclohexanecarboxylats are mixed with 97 g of dimethyl terephthalate, 15.5 g of ethylene glycol and 26.0 g of neopentyl glycol, with nitrogen as a protective gas, mixed with 0.2 g of tetrabutyl titanate and with elimination of 38, 4 g of methanol transesterified at 180-200 ° C. 131.5 g of a waxy polyester dioxirane are obtained.
- 31.2 g of methyl 3,4-epoxycyclohexanecarboxylate are mixed with 73 g of adipic acid, 15.5 g of ethylene glycol and 26.0 g of neopentyl glycol, with nitrogen as inert gas, mixed with 0.2 g of tetrabutyl titanate and with elimination of 6, 4 g of methanol and 18 g of water at 180 - 200 ° C esterified. 121.5 g of a waxy polyester dioxirane are obtained.
- UV-curable baked enamels were formulated from the oxiranes prepared:
- a UV-curable lacquer is prepared from 32.5 g of Cyracure UVR 6110, 30 g of dioxirane III, 5 g of photoinitiator, 30 g of methyl 3,4-epoxy-cyclohexanecarboxylate and 2.5 g of flow additive.
- the components are homogeneously mixed to a colorless transparent varnish with 790 mPa s.
- a UV-curable lacquer is prepared from 52.5 g of Cyracure UVR 6110, 40 g of dioxirane 1, 5 g of photoinitiator and 2.5 g of flow additive. The components are mixed homogeneously to form a colorless transparent paint with 670 mPa s.
- a UV-curable lacquer is prepared from 67.5 g Cyracure UVR 6110, 25 g Desmophen 670 polyester polyol, 5 g photoinitiator and 2.5 g leveling additive. The components are homogeneously mixed to a colorless transparent lacquer with 2340 mPa s.
- the baked enamines prepared according to the invention were by Düsenabstreifclar on a copper wire with 0.30 mm bare wire diameter, conventionally coated with a commercially available polyesterimide wire enamel with an overall diameter increase of 50 microns, at 10 - 80 ° C and cured by UV light.
- the UV source used was a microwave-excited high-pressure mercury vapor radiator.
- the power of the spotlight was between 25 and 100 watts per cm. Reflector and radiator form a resonator unit.
Abstract
Description
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von beschichteten elektrischen Drähten.The present invention relates to a process for producing coated electric wires.
Die für die Herstellung von Motoren, Magnetspulen, Hubmagnete und Generatoren eingesetzten Wicklungsträger sind häufig starken mechanischen Belastungen ausgesetzt. Besonders bei schnellaufenden Rotoren sind die entstehenden Zentrifugal- und Zentripetalkräfte, die auf die Wicklungen der bewegten Bauteile wirken, recht erheblich.The winding carriers used for the production of motors, solenoids, solenoids and generators are often exposed to strong mechanical loads. Especially with high-speed rotors, the resulting centrifugal and centripetal forces, which act on the windings of the moving components, quite considerable.
Um Schäden und Verformungen der beanspruchten Geräteteile zu verhindern oder zumindest zu reduzieren, werden frühzeitig Wicklungen fixiert. Dies geschieht durch die Imprägnierung mit Tränklacken oder Tränkharzen. Die Tränklacke oder Tränkharze müssen gehärtet werden. Dies erreicht man üblicherweise durch eine Ofenhärtung des Bauteils bei erhöhten Temperaturen über einen längeren Zeitraum.In order to prevent or at least reduce damage and deformations of the claimed device parts, windings are fixed at an early stage. This is done by impregnation with impregnating varnishes or impregnating resins. The impregnating varnishes or impregnating resins must be hardened. This is usually achieved by oven hardening the component at elevated temperatures over an extended period of time.
Eine Neuerung bei der Fixierung von Drähten war die Einführung von Backlacken, die besonders auf dem Gebiet der Ablenkspulen-fertigung in der TV-Technik ihren Einzug hielten.
Das Prinzip der Backlacke beruht auf der thermoplastischen Eigenschaft, die ein Verkleben der fertig lackierten Drähte nach dem Wickeln der Spule ermöglicht. Dabei wird die Backlackschicht, die zweckmäßig über eine bestehende Grundisolation des Lackdrahtes aufgebracht wird, zunächst geschmolzen, wobei die Wicklungszwischenräume teilweise mit dem geschmolzenen Thermoplasten aufgefüllt werden und somit die Einzelwicklungen über den Thermoplasten verkleben. Durch die nachfolgende Erstarrung des Polymers sind alle Windungen untereinander fixiert, eine Verformung der Wicklung, die insbesondere bei freitragenden Spulen eine Veränderung der Induktivität verursachen würde, kann somit verhindert werden.
Das Schmelzen des Backlacks erfolgt thermisch, zum einen über das Temperieren der Fertigbauteile im Heizofen und zum anderen elektrisch durch Stromstoß.An innovation in the fixing of wires was the introduction of baked enamels, which were particularly in the field of deflection coil production in the TV technology made their entry.
The principle of the baked coatings is based on the thermoplastic property, which allows bonding of the finished painted wires after winding the coil. In this case, the baked enamel layer, which is expediently applied over an existing base insulation of the enameled wire, is first melted, wherein the interwinding spaces are partially filled with the molten thermoplastic and thus glue the individual windings over the thermoplastic. As a result of the subsequent solidification of the polymer, all the windings are fixed to one another, a deformation of the winding which would cause a change in the inductance, in particular in the case of self-supporting coils, can thus be prevented.
The melting of the baked enamel is thermally, on the one hand on the tempering of prefabricated components in the heater and the other electrically by power surge.
Der Vorteil der Backlacke bei der Fertigung von Spulen aller Art veranlaßte die Konstrukteure zur Entwicklung neuer Geräte für die Wickeltechnik. Heute werden Backlacke nahezu in allen Bereichen der Lackdrahtverarbeitung zur Wicklungsfixierung auch bei hohen thermischen Anforderungen eingesetzt.The advantage of the baked enamels in the production of reels of all kinds caused the designers to develop new devices for the winding technology. Today, baked enamels are used in almost all areas of enamelled wire processing for winding fixation, even with high thermal requirements.
Es werden unterschiedliche Substanzklassen als Basis für Backlacke in Abhängigkeit vom Einsatzgebiet verwendet.Different classes of substances are used as a basis for baked enamels, depending on the field of application.
In
In der
In der
In der
In the
In der
Alle genannten Backlacksysteme werden mittels herkömmlicher Naßlackauftragung per Filzabstreif- oder Düsenauftrags-verfahren auf bereits isolierte Lackdrähte aufgebracht und thermisch getrocknet, wobei die ausgetriebenen Lösungsmittel in den Katalysatoren der konventionellen Lackieranlagen nachverbrannt werden. Der Erweichungsbereich der verbliebenen Backlackschicht wird nicht selten über den Gehalt an Restlösungsmittel im Polymer reguliert, das den entscheidenden Nachteil der Lösungsmittelfreisetzung während der Verbackung bietet.All the above-mentioned enamel systems are applied by means of conventional wet paint application by felt wiping or nozzle application process on already insulated enamel wires and thermally dried, the expelled solvents are post-combusted in the catalysts of the conventional paint. The softening range of the remaining baked enamel layer is not infrequently regulated by the content of residual solvent in the polymer, which offers the decisive disadvantage of solvent release during the caking.
Die
In
Aufgabe der vorliegenden Erfindung ist, einen Backlack zur Verfügung zu stellen, der lösungsmittelfrei und durch UV-Licht härtbar ist.The object of the present invention is to provide a baked enamel which is solvent-free and curable by UV light.
Diese Aufgabe wird dadurch gelöst, daß zur Beschichtung UV-härtbare Backlacke eingesetzt werden, welche
- a) 50 - 95 % Bindemittel auf Oxiranbasis
- b) 1 -10 % UV-Vernetzungskatalysatoren,
- c) 0 - 80 % Reaktiwerdünner,
- d) 0 - 40 % Kettenüberträger, sowie
- e) 1 - 8 % Additive, Stabilisatoren usw.
- a) 50-95% oxirane-based binder
- b) 1 -10% UV crosslinking catalysts,
- c) 0 - 80% reactive thinner,
- d) 0 - 40% chain transfer agent, as well
- e) 1 - 8% additives, stabilizers etc.
Die erfindungsgemäßen Backlacke sind frei von Lösemitteln jeglicher Art, wobei Wasser auch als Lösemittel zählt.The baked coatings according to the invention are free from solvents of any kind, with water also counting as solvent.
Erfindungsgemäß bevorzugte UV-härtbare Backlacke enthalten:
- a) 60 -93 % Bindemittel auf Oxiranbasis
- b) 2 - 6 % UV-Vernetzungskatalysatoren,
- c) 0 - 70 % Reaktiwerdünner,
- d) 0 - 35 % Kettenüberträger, sowie
- e) 1 - 3 % Additive, Stabilisatoren usw.
- a) 60-93% oxirane-based binder
- b) 2 - 6% UV crosslinking catalysts,
- c) 0 - 70% reactive thinner,
- d) 0 - 35% chain transfer, as well
- e) 1 - 3% additives, stabilizers etc.
Die Bindemittel a) enthalten vorzugsweise cyclo-aliphatische Oxiranvebindungen der allgemeinen Form
Andere hier nicht im Detail beschriebene Mono-, Di- und Polyoxirane sind ebenfalls als Bindemittel einsetzbar.Other mono-, di- and polyoxiranes not described in detail here are also usable as binders.
Geeignet zur Herstellung von Backlacken ist 3,4-Epoxycyclohexylmethyl-3,4-epoxycyclohexancarboxylat, das unter dem Namen "Cyracure UVR 6110" der Union Carbide Corporation erhältlich ist.Suitable for the production of baked enamels is 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxylate, which is available under the name "Cyracure UVR 6110" from Union Carbide Corporation.
Die verwendeten höhermolekularen Mono- und Dioxirane können hergestellt werden durch Umsetzung des Methyl-3,4-epoxycyclohexancarboxylats mit OH-funktionellen Polyethylen- oder Polypropylenglykolen mit n = 1 - 50 Ethoxy- bzw. Propoxyeinheiten, bevorzugt n = 5 - 25, besonders bevorzugt n = 8 - 12, einerseits zum Erhalt der Polyethermono- und -dioxiranen oder mit aliphatischen und/oder aromatischen Dicarbonsäuren und Polyolen zum Erhalt der Polyestermono- und -dioxiranen.The higher molecular weight mono- and dioxiranes used can be prepared by reacting the methyl 3,4-epoxycyclohexanecarboxylate with OH-functional polyethylene or polypropylene glycols having n = 1-50 ethoxy or propoxy units, preferably n = 5-25, more preferably n = 8 - 12, on the one hand to obtain the Polyether mono- and dioxiranes or with aliphatic and / or aromatic dicarboxylic acids and polyols to obtain the polyester mono- and -dioxiranen.
Geeignete aromatische Dicarbonsäuren und/oder Dicarbonsäuredimethylester sind zum Beispiel Isophthalsäure, Terephthalsäure, Terephthalsäuredimethylester, Naphthalindicarbonsäure-dimethylester. Besonders bevorzugt sind Isophthalsäure und Terephthalsäuredimethylester. Geeignete aliphatische Dicarbonsäuren sind zum Beispiel Adipinsäure, Azelainsäure und Decandicarbonsäure, wobei Adipinsäure besonders bevorzugt ist.Suitable aromatic dicarboxylic acids and / or dicarboxylic acid dimethyl esters are, for example, isophthalic acid, terephthalic acid, terephthalic acid dimethyl ester, naphthalenedicarboxylic acid dimethyl ester. Particularly preferred are isophthalic acid and dimethyl terephthalate. Suitable aliphatic dicarboxylic acids are, for example, adipic acid, azelaic acid and decanedicarboxylic acid, with adipic acid being particularly preferred.
Als Polyole finden unter anderem Ethylenglykol, Propylenglykol, Neopentylglykol und Butandiol-1,4 Verwendung. Als besonders vorteilhaft haben sich Gemische aus Ethylenglykol und Neopentylglykol für die beschriebene Anwendung herausgestellt.Suitable polyols include ethylene glycol, propylene glycol, neopentyl glycol and 1,4-butanediol. Mixtures of ethylene glycol and neopentyl glycol have proven particularly advantageous for the described application.
Als UV-Vernetzungskatalysator b) kommt vorzugsweise ein für kationische Photopolymerisation geeigneter Photoinitiator, oder Initiatorgemisch in Betracht. Bevorzugt für die erfindungsgemäßen Backlacke wird das gemischte Arylsulfoniumhexafluorophosphatsalz der folgenden Form
Als Reaktiwerdünner c) kommen vorzuggsweise niedermolekulare Oxirane, Oxetane u.a. mit den erfindungsgemäßen Oxiranen copolymersierbaren Verbindungen in Betracht.As reactive diluents c), preference is given to low molecular weight oxiranes, oxetanes and the like. into consideration with the oxiranes according to the invention copolymerizable compounds.
Als Kettenüberträger d) und zur Erhöhung der Vernetzungsdichte ist die Mitverwendung von ggf. verzweigten Polyesterpolyolen mit Molekulargewichten zwischen 500 und 2000 g/mol vorteilhaft, bevorzugt werden Polyesterpolyole mit einem mittleren Molekulargewicht zwischen 500 und 1000 g/mol.As a chain transfer agent d) and to increase the crosslinking density, the concomitant use of optionally branched polyester polyols having molecular weights between 500 and 2000 g / mol is advantageous, preferably polyester polyols having an average molecular weight between 500 and 1000 g / mol.
Als Verlaufsadditive e) können bevorzugt oberflächenaktive modifizierte Polydisiloxane verwendet werden, wie zum Beispiel das "Byk 306" der Byk Chemie GmbH.As leveling agents e) it is possible to use surface-modified polydisiloxanes, for example the "Byk 306" from Byk Chemie GmbH.
Die Erfindung wird anhand der nachfolgenden Beispiele näher erläutert:The invention will be explained in more detail with reference to the following examples:
62,4 g des Methyl-3,4-epoxycyclohexancarboxylats werden gemischt mit 80 g eines Polyethylenglykols 400, mit Stickstoff als Schutzgas beschleiert, mit 0,2 g Tetrabutyltitanat versetzt und unter Abspaltung von 12,8 g Methanol bei 180 - 200°C umgeestert. 155,4 g eines hochviskosen Polyethylenglykoldioxirans werden erhalten.62.4 g of methyl 3,4-epoxycyclohexanecarboxylate are mixed with 80 g of a polyethylene glycol 400, with nitrogen as a protective gas, mixed with 0.2 g of tetrabutyl titanate and transesterified with elimination of 12.8 g of methanol at 180-200 ° C. , 155.4 g of a high-viscosity polyethylene glycol dioxirane are obtained.
31,2 g des Methyl-3,4-epoxycyclohexanecarboxylats werden gemischt mit 97 g Dimethylterephthalat, 15,5 g Ethylenglykol und 26,0 g Neopentylglykol, mit Stickstoff als Schutzgas beschleiert, mit 0,2 g Tetrabutyltitanat versetzt und unter Abspaltung von 38,4 g Methanol bei 180 - 200°C umgeestert. 131,5 g eines wachsartigen Polyesterdioxirans werden erhalten.31.2 g of methyl 3,4-epoxycyclohexanecarboxylats are mixed with 97 g of dimethyl terephthalate, 15.5 g of ethylene glycol and 26.0 g of neopentyl glycol, with nitrogen as a protective gas, mixed with 0.2 g of tetrabutyl titanate and with elimination of 38, 4 g of methanol transesterified at 180-200 ° C. 131.5 g of a waxy polyester dioxirane are obtained.
31,2 g des Methyl-3,4-epoxycyclohexancarboxylats werden gemischt mit 73 g Adipinsäure, 15,5 g Ethylenglykol und 26,0 g Neopentylglykol, mit Stickstoff als Schutzgas beschleiert, mit 0,2 g Tetrabutyltitanat versetzt und unter Abspaltung von 6,4 g Methanol und 18 g Wasser bei 180 - 200°C verestert. 121,5 g eines wachsartigen Polyesterdioxirans werden erhalten.31.2 g of methyl 3,4-epoxycyclohexanecarboxylate are mixed with 73 g of adipic acid, 15.5 g of ethylene glycol and 26.0 g of neopentyl glycol, with nitrogen as inert gas, mixed with 0.2 g of tetrabutyl titanate and with elimination of 6, 4 g of methanol and 18 g of water at 180 - 200 ° C esterified. 121.5 g of a waxy polyester dioxirane are obtained.
Aus den hergestellten Oxiranen wurden UV-härtbare Backlacke formuliert:UV-curable baked enamels were formulated from the oxiranes prepared:
Es wird ein UV-härtbarer Lack hergestellt aus 32,5 g Cyracure UVR 6110, 30 g Dioxiran III, 5 g Photoinitiator, 30 g Methyl-3,4-epoxy-Cyclohexancarboxylat und 2,5 g Verlaufsadditiv. Die Komponenten werden homogen gemischt zu einem farblosen transparenten Lack mit 790 mPa s.A UV-curable lacquer is prepared from 32.5 g of Cyracure UVR 6110, 30 g of dioxirane III, 5 g of photoinitiator, 30 g of methyl 3,4-epoxy-cyclohexanecarboxylate and 2.5 g of flow additive. The components are homogeneously mixed to a colorless transparent varnish with 790 mPa s.
Es wird ein UV-härtbarer Lack hergestellt aus 52,5 g Cyracure UVR 6110, 40 g Dioxiran 1, 5 g Photoinitiator und 2,5 g Verlaufs-additiv. Die Komponenten werden homogen gemischt zu einem farblosen transparenten Lack mit 670 mPa s.A UV-curable lacquer is prepared from 52.5 g of Cyracure UVR 6110, 40 g of dioxirane 1, 5 g of photoinitiator and 2.5 g of flow additive. The components are mixed homogeneously to form a colorless transparent paint with 670 mPa s.
Es wird ein UV-härtbarer Lack hergestellt aus 67,5 g Cyracure UVR 6110, 25 g Polyesterpolyol Desmophen 670, 5 g Photoinitiator und 2,5 g Verlaufsadditiv. Die Komponenten werden homogen gemischt zu einem farblosen transparenten Lack mit 2340 mPa s.A UV-curable lacquer is prepared from 67.5 g Cyracure UVR 6110, 25 g Desmophen 670 polyester polyol, 5 g photoinitiator and 2.5 g leveling additive. The components are homogeneously mixed to a colorless transparent lacquer with 2340 mPa s.
Die erfindungsgemäß hergestellten Backlacke wurden mittels Düsenabstreifverfahren auf einen Kupferdraht mit 0,30 mm Blankdrahtdurchmesser, konventionell beschichtet mit einem handelsüblichen Polyesterimid-Drahtlack mit einer Gesamtdurchmesserzunahme von 50 µm, bei 10 - 80°C und mittels UV-Licht ausgehärtet. Als UV-Quelle wurde ein durch Mikrowellen angeregter Quecksilberdampf-Hochdruckstrahler eingesetzt. Die Leistung des Strahlers lag zwischen 25 und 100 Watt pro cm. Reflektor und Strahler bilden dabei eine Resonatoreinheit.The baked enamines prepared according to the invention were by Düsenabstreifverfahren on a copper wire with 0.30 mm bare wire diameter, conventionally coated with a commercially available polyesterimide wire enamel with an overall diameter increase of 50 microns, at 10 - 80 ° C and cured by UV light. The UV source used was a microwave-excited high-pressure mercury vapor radiator. The power of the spotlight was between 25 and 100 watts per cm. Reflector and radiator form a resonator unit.
Nach dem internationalen Standard der DIN EN 60851-3 (IEC 851-3) wurden die Prüfungen der Verbackungsfestigkeit an normgerecht hergestellten Spulen vorgenommen. Die für den vorliegenden Drahtdurchmesser erforderliche Mindestverbackungskraft wurde mit den ermittelten 0,7 N deutlich übertroffen.In accordance with the international standard of DIN EN 60851-3 (IEC 851-3), the caking strength tests were carried out on standard-produced coils. The minimum bonding force required for the present wire diameter was significantly exceeded with the 0.7 N determined.
Folgende Prüfergebnisse wurden erhalten:
- Backlack 1: Bei einer Lackschicht von 10 µm erhält man einen Lackdraht mit glatter Oberfläche und guten Verbackungseigenschaften bei 200°C und einer Verbackungskraft von 0,7 N.
- Backlack 2: Bei einer Lackschicht von 10 µm erhält man einen Lackdraht mit glatter Oberfläche und guten Verbackungseigenschaften bei 200°C.
- Backlack 3: Bei einer Lackschicht von 11 µm erhält man einen Lackdraht mit glatter Oberfläche und guten Verbackungs-eigenschaften bei 200°C und einer Verbackungskraft von 0,8 N.
- Backlack 1: With a lacquer layer of 10 μm, an enameled wire with a smooth surface and good caking properties at 200 ° C. and a bonding force of 0.7 N are obtained.
- Back lacquer 2: With a lacquer layer of 10 μm, an enamelled wire with a smooth surface and good caking properties at 200 ° C is obtained.
- Back varnish 3: With a varnish layer of 11 μm, a varnished wire with a smooth surface and good caking properties at 200 ° C. and a bonding force of 0.8 N are obtained.
Claims (12)
- Use of UV-curable baking enamels containinga) 50%-95% by weight of oxirane-based binders,b) 1%-10% by weight of UV crosslinking catalysts,c) 0-80% by weight of reactive diluents,d) 0-40% by weight of chain transfer agents, ande) 1%-8% of further additivesto produce coils.
- Use according to Claim 1 or 2, characterized in that baking enamels are used containinga) 60%-93% by weight of oxirane-based binders,b) 2%-6% by weight of crosslinking catalysts,c) 0-70% by weight of reactive diluents,d) 0-30% by weight of chain transfer agents, ande) 1%-3% of further additives.
- Use according to any one of the present claims, characterized in that, as baking enamel, cycloaliphatic oxirane compounds are used of the general form
- Use according to any one of the preceding claims, characterized in that at least one photoinitiator suitable for cationic photopolymerization is added.
- Use according to any one of the preceding claims, characterized in that a baking enamel is used whose component a) is prepared using methyl 3,4-epoxycyclohexanecarboxylate.
- Use according to Claim 7, characterized in that a baking enamel is used whose component a) has been prepared using polyethylene glycol.
- Use according to any one of the preceding claims, characterized in that baking enamels are used to which low molecular weight oxiranes, oxetanes are added as reactive diluents.
- Use according to any one of the preceding claims, characterized in that component d) comprises polyester polyols having molecular weights of between 500 and 2000 g/mol.
- Use according to any one of the preceding claims, characterized in that component d) comprises polyester polyols having an average molecular weight of between 500 and 1000 g/mol.
- Use according to any one of the preceding claims, characterized in that component e) comprises additives or stabilizers or mixtures thereof.
- Use according to any one of the preceding claims,
characterized in that after the coil has been coated with baking enamel, said enamel is cured by means of ultraviolet radiation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL05707891T PL1716580T3 (en) | 2004-02-20 | 2005-01-24 | Method for producing coated electrical wires |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004008365A DE102004008365A1 (en) | 2004-02-20 | 2004-02-20 | Process for producing coated electrical wires |
PCT/EP2005/050384 WO2005081266A1 (en) | 2004-02-20 | 2005-01-24 | Method for producing coated electrical wires |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1716580A1 EP1716580A1 (en) | 2006-11-02 |
EP1716580B1 true EP1716580B1 (en) | 2008-01-16 |
Family
ID=34832861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05707891A Not-in-force EP1716580B1 (en) | 2004-02-20 | 2005-01-24 | Method for producing coated electrical wires |
Country Status (11)
Country | Link |
---|---|
US (1) | US20070243318A1 (en) |
EP (1) | EP1716580B1 (en) |
JP (1) | JP5424532B2 (en) |
AT (1) | ATE384332T1 (en) |
BR (1) | BRPI0507803B1 (en) |
DE (2) | DE102004008365A1 (en) |
ES (1) | ES2299004T3 (en) |
MX (1) | MXPA06009426A (en) |
PL (1) | PL1716580T3 (en) |
PT (1) | PT1716580E (en) |
WO (1) | WO2005081266A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2645540A1 (en) * | 2012-03-28 | 2013-10-02 | Siemens Aktiengesellschaft | Corona shielding material for an electric machine |
US10186924B2 (en) | 2011-12-15 | 2019-01-22 | Siemens Aktiengesellschaft | Method for producing a corona shield, fast-curing corona shield system, and electric machine |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005040126A1 (en) * | 2005-08-25 | 2007-03-01 | Altana Electrical Insulation Gmbh | coating composition |
DE102014221715A1 (en) * | 2014-10-24 | 2016-04-28 | Siemens Aktiengesellschaft | Impregnating resin, conductor arrangement, electric coil and electric machine |
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US4090936A (en) * | 1976-10-28 | 1978-05-23 | Minnesota Mining And Manufacturing Company | Photohardenable compositions |
DE2843895C3 (en) * | 1978-10-07 | 1981-11-26 | Felten & Guilleaume Carlswerk AG, 5000 Köln | Process for the production of electrical conductor wires insulated with lacquer |
JPS56130013A (en) * | 1980-03-17 | 1981-10-12 | Furukawa Electric Co Ltd | Method of producing self-adhesive insulated wire |
US4362263A (en) * | 1980-04-24 | 1982-12-07 | Westinghouse Electric Corp. | Solderable solventless UV curable enamel |
US4357219A (en) * | 1980-06-27 | 1982-11-02 | Westinghouse Electric Corp. | Solventless UV cured thermosetting cement coat |
US4629779A (en) * | 1983-10-27 | 1986-12-16 | Union Carbide Corporation | Low viscosity adducts of a polycaprolactone polyol and a polyepoxide |
US4554730A (en) * | 1984-01-09 | 1985-11-26 | Westinghouse Electric Corp. | Method of making a void-free non-cellulose electrical winding |
JPS61101917A (en) * | 1984-10-24 | 1986-05-20 | 日立化成工業株式会社 | Manufacture of self-bonding insulated wire |
JPS62143922A (en) * | 1985-11-07 | 1987-06-27 | ユニオン・カ−バイド・コ−ポレ−シヨン | Photopolymerizable composition based on epoxy and hydroxyl-containing organic substance |
CA1312040C (en) * | 1985-12-19 | 1992-12-29 | Joseph Victor Koleske | Conformal coatings cured with actinic radiation |
US4857562A (en) * | 1987-01-30 | 1989-08-15 | General Electric Company | UV curable epoxy resin compositions with delayed cure |
US4929305A (en) * | 1987-01-30 | 1990-05-29 | General Electric Company | Method of bonding using UV curable epoxy resin compositions with delayed cure |
US5290602A (en) * | 1992-10-19 | 1994-03-01 | Union Carbide Chemicals & Plastics Technology Corporation | Hindered-hydroxyl functional (meth) acrylate-containing copolymers particularly suitable for use in coating compositions which are sprayed with compressed fluids as viscosity reducing diluents |
JPH0812924A (en) * | 1994-06-29 | 1996-01-16 | Hitachi Cable Ltd | Self-fusible coating composition and self-fusible insulated wire |
JP3786480B2 (en) * | 1996-10-14 | 2006-06-14 | Jsr株式会社 | Photocurable resin composition |
CO4790198A1 (en) * | 1997-08-04 | 1999-05-31 | Abb Power T And D Company Inc | METHOD AND APPARATUS FOR THE MANUFACTURE OF A HELICALLY COILED ELECTRIC COIL WITH VARIABLE INSULATION |
JPH11323095A (en) * | 1998-05-21 | 1999-11-26 | Nippon Kayaku Co Ltd | Photocationic-polymerizable epoxy resin-based solid composition and article made therefrom |
JPH11335442A (en) * | 1998-05-25 | 1999-12-07 | Nippon Kayaku Co Ltd | Photocation-polymerizable epoxy resin-based solid composition and article |
DE19951709A1 (en) * | 1999-10-27 | 2001-05-03 | Alcatel Sa | Electrical conductor with a rectangular or quadratic cross section |
US6350792B1 (en) * | 2000-07-13 | 2002-02-26 | Suncolor Corporation | Radiation-curable compositions and cured articles |
JP2002050249A (en) * | 2000-08-01 | 2002-02-15 | Sekisui Chem Co Ltd | Method for manufacturing surface-coated wire material and surface-coating composition |
-
2004
- 2004-02-20 DE DE102004008365A patent/DE102004008365A1/en not_active Ceased
-
2005
- 2005-01-24 DE DE502005002569T patent/DE502005002569D1/en active Active
- 2005-01-24 US US10/590,126 patent/US20070243318A1/en not_active Abandoned
- 2005-01-24 WO PCT/EP2005/050384 patent/WO2005081266A1/en active IP Right Grant
- 2005-01-24 EP EP05707891A patent/EP1716580B1/en not_active Not-in-force
- 2005-01-24 PT PT05707891T patent/PT1716580E/en unknown
- 2005-01-24 BR BRPI0507803-2A patent/BRPI0507803B1/en not_active IP Right Cessation
- 2005-01-24 AT AT05707891T patent/ATE384332T1/en active
- 2005-01-24 PL PL05707891T patent/PL1716580T3/en unknown
- 2005-01-24 JP JP2006553577A patent/JP5424532B2/en not_active Expired - Fee Related
- 2005-01-24 ES ES05707891T patent/ES2299004T3/en active Active
- 2005-01-24 MX MXPA06009426A patent/MXPA06009426A/en active IP Right Grant
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10186924B2 (en) | 2011-12-15 | 2019-01-22 | Siemens Aktiengesellschaft | Method for producing a corona shield, fast-curing corona shield system, and electric machine |
EP2645540A1 (en) * | 2012-03-28 | 2013-10-02 | Siemens Aktiengesellschaft | Corona shielding material for an electric machine |
WO2013143895A3 (en) * | 2012-03-28 | 2014-10-02 | Siemens Aktiengesellschaft | Corona shield material for an electric machine |
Also Published As
Publication number | Publication date |
---|---|
DE502005002569D1 (en) | 2008-03-06 |
ATE384332T1 (en) | 2008-02-15 |
US20070243318A1 (en) | 2007-10-18 |
PT1716580E (en) | 2008-03-28 |
BRPI0507803B1 (en) | 2012-12-25 |
JP5424532B2 (en) | 2014-02-26 |
ES2299004T3 (en) | 2008-05-16 |
PL1716580T3 (en) | 2008-06-30 |
DE102004008365A1 (en) | 2005-09-08 |
WO2005081266A1 (en) | 2005-09-01 |
JP2007523455A (en) | 2007-08-16 |
MXPA06009426A (en) | 2007-03-23 |
EP1716580A1 (en) | 2006-11-02 |
BRPI0507803A (en) | 2007-07-31 |
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