EP0025538A2 - Process for producing insulated winding wire by extrusion of thermoplasts - Google Patents

Process for producing insulated winding wire by extrusion of thermoplasts Download PDF

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Publication number
EP0025538A2
EP0025538A2 EP80105156A EP80105156A EP0025538A2 EP 0025538 A2 EP0025538 A2 EP 0025538A2 EP 80105156 A EP80105156 A EP 80105156A EP 80105156 A EP80105156 A EP 80105156A EP 0025538 A2 EP0025538 A2 EP 0025538A2
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EP
European Patent Office
Prior art keywords
extrusion
insulated winding
aromatic
winding wires
residues
Prior art date
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Application number
EP80105156A
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German (de)
French (fr)
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EP0025538A3 (en
EP0025538B1 (en
Inventor
Harald Dr. Janssen
Eberhard Kertscher
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Beck Dr and Co GmbH
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Beck Dr and Co GmbH
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Application filed by Beck Dr and Co GmbH filed Critical Beck Dr and Co GmbH
Priority to AT80105156T priority Critical patent/ATE7975T1/en
Publication of EP0025538A2 publication Critical patent/EP0025538A2/en
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Classifications

    • 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
    • H01B3/42—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 polyesters; polyethers; polyacetals
    • H01B3/427—Polyethers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/06—Insulating conductors or cables
    • H01B13/14—Insulating conductors or cables by extrusion
    • H01B13/148—Selection of the insulating material therefor
    • 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 an improved method for producing insulated winding wires by extrusion of thermoplastics.
  • Enamel-insulated winding wires so-called “enamelled wires” are precisely characterized in the German standard DIN 46435 from April 1977. They are used on a large scale in electrical engineering, transformer construction and electronics.
  • the conductor metal preferably copper or aluminum, is insulated with a thin, but mechanically and thermally extremely resistant synthetic resin lacquer layer.
  • Such enamelled wires are produced on wire enamelling machines by repeatedly applying an enamelled wire enamel to the metal wire.
  • wire enamel dispersions and aqueous solutions of wire enamel resins as well as resin melts are already used for wire enamelling.
  • thermoplastics for thick-walled sheathing of electrical conductor bundles and for the production of conductor wires has long been known from the cable industry.
  • thermoplastic polycondensates with crystallite melting points above 170 ° C., preferably above 250 ° C., are used as thermoplastics for the extrusion coating of winding wires.
  • polymers with chain sulfur atoms e.g. Called polyphenylene sulfide.
  • the examples describe the extrusion conditions for polyethylene terephthalate, 6,6-polyamide and polyphenylene sulfide and the properties of the winding wires obtained therewith.
  • the invention thus relates to a process for the production of so-called enamel-insulated winding wires by extrusion of partially crystalline thermoplastic polycondensates with crystallite melting points above 170 ° C, preferably above 250 ° C, characterized in that aromatic polyether ketones with recurring units of the formula where Ar is aromatic radicals, which may be the same or different, in particular benzene, naphthalene or diphenyl radicals, and where n is an integer from 50 to 200, are used.
  • Winding wires have a softening temperature of well over 300 ° C and a surface hardness of 2 - 3 H, which is normally only achieved with winding wires with thermoset coatings.
  • thermoplastics In comparison to the values for the other thermoplastics, the thermal shock value of the winding wires insulated with polyether ketone coatings has surprisingly been greatly improved.
  • Coating material Semi-crystalline aromatic polyetherketone of the summary formula

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Organic Insulating Materials (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Processes Specially Adapted For Manufacturing Cables (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Adornments (AREA)
  • Insulated Conductors (AREA)

Abstract

1. Claims for the Contracting States : BE CH DE FR GB IT LI NL SE Use of aromatic polyether ketones with repeated units of the formula see diagramm : EP0025538,P4,F4 in which Ar stands for aromatic residues, which may be the same or different, in particular for residues of benzene, naphthaline or diphenyl, and in which n represents an integer from 50 to 200, for the production of insulated winding wires from copper by extrusion, so that the total film thickness of the insulation meets with the requirements of the German Industrial Standard DIN 46 435 (April 1977). 1. Claim for the Contracting State : AT Method for the production of insulated winding wires from copper by extrusion so that the total film thickness of the insulation meets with the requirements of the German Industrial Standard DIN 46 435 (April 1977), characterized in that aromatic polyether ketones with repeated units of the formula see diagramm : EP0025538,P5,F1 in which Ar stands for aromatic residues, which may be the same or different, in particular for residues of benzene, naphthaline or diphenyl, and in which n represents an integer from 50 to 200 are used.

Description

Die vorliegende Erfindung betrifft ein verbessertes Verfahren zur Herstellung von isolierten Wickeldrähten durch Extrusion von Thermoplasten.The present invention relates to an improved method for producing insulated winding wires by extrusion of thermoplastics.

Lackisolierte Wickeldrähte, sogenannte "Lackdrähte" sind in der Deutschen Norm DIN 46435 von April 1977 genau charakterisiert. Sie kommen in großem Umfang im Elektromaschinenbau, Transformatorenbau und in der Elektronik zum Einsatz.Enamel-insulated winding wires, so-called "enamelled wires", are precisely characterized in the German standard DIN 46435 from April 1977. They are used on a large scale in electrical engineering, transformer construction and electronics.

Das Leitermetall, vorzugsweise Kupfer oder Aluminium, ist mit einer dünnen, jedoch mechanisch und thermisch äußerst widerstandsfähigen Kunstharzlackschicht isoliert.The conductor metal, preferably copper or aluminum, is insulated with a thin, but mechanically and thermally extremely resistant synthetic resin lacquer layer.

Die Herstellung derartiger Lackdrähte erfolgt auf Drahtlackiermaschinen durch mehrfaches kontinuierliches Auftragen eines Drahtlackes auf den Metalldraht. Im Hinblick auf die Schädlichkeit der in dem Drahtlack enthaltenen Lösungsmittel und auf die sich daraus ergebenden Umweltprobleme werden zur Drahtlackierung auch schon Drahtlack-Dispersionen und wässrige Lösungen von Drahtlackharzen sowie auch Harzschmelzen eingesetzt.Such enamelled wires are produced on wire enamelling machines by repeatedly applying an enamelled wire enamel to the metal wire. With regard to the harmfulness of the solvents contained in the wire enamel and to the environmental problems resulting therefrom, wire enamel dispersions and aqueous solutions of wire enamel resins as well as resin melts are already used for wire enamelling.

Alle diese bekannten Verfahren sind durch die damit erreichbaren verhältnismäßig niedrigen Abzugsgeschwindigkeiten jedoch recht arbeits- und zeitaufwendig.However, all of these known methods are quite laborious and time-consuming due to the relatively low take-off speeds that can be achieved with them.

Aus der Kabelindustrie ist seit langem die Extrusion von Thermoplasten zur dickwandigen Ummantelung elektrischer Leiterbündel sowie zur Herstellung von Leitungsdrähten bekannt.The extrusion of thermoplastics for thick-walled sheathing of electrical conductor bundles and for the production of conductor wires has long been known from the cable industry.

In einer älteren Anmeldung (vergl. z.B. DE-OS 26 38 763) wird bereits ein Verfahren zur Herstellung von lackisolierten Wickeldrähten durch Extrusion von Thermoplasten beschrieben.In an older application (see e.g. DE-OS 26 38 763) a process for the production of enamelled wire by extrusion of thermoplastics is already described.

Diese unter Mitwirkung der Anmelderin getätigte ältere Anmeldung leistet damit einen entscheidenden Beitrag zur Überwindung des Vorurteils, die Erzielung derart dünner Isolierschichten, wie sie laut DIN 46435 gefordert werden, sei im Extrusionsverfahren nicht möglich. Nach DE-OS 26 38 763 werden als Thermoplaste für die Extrusionsbeschichtung von Wickeldrähten teilkristalline thermoplastische Polykondensate mit Kristallitschmelzpunkten oberhalb 170°C, vorzugsweise oberhalb 250°C, eingesetzt.This older registration, made with the cooperation of the applicant, thus makes a decisive contribution to overcoming the prejudice that it is not possible to achieve such thin insulating layers as required by DIN 46435 in the extrusion process. According to DE-OS 26 38 763, partially crystalline thermoplastic polycondensates with crystallite melting points above 170 ° C., preferably above 250 ° C., are used as thermoplastics for the extrusion coating of winding wires.

Außer den verschiedenen linearen Polyestern und Polyamiden werden im Text Polymere mit kettenständigen Schwefelatomen, wie z.B. Polyphenylensulfid, genannt. In den Beispielen werden die Extrusionsbedingungen für Polyäthylenterephthalat, 6,6-Polyamid sowie Polyphenylensulfid und die Eigenschaften der damit erhaltenen Wickeldrähte beschrieben.In addition to the various linear polyesters and polyamides, polymers with chain sulfur atoms, e.g. Called polyphenylene sulfide. The examples describe the extrusion conditions for polyethylene terephthalate, 6,6-polyamide and polyphenylene sulfide and the properties of the winding wires obtained therewith.

Alle diese mit den genannten Thermoplasten beschichteten Wickeldrähte haben den Nachteil, daß ihre Erweichungstemperaturen (nach DIN 46453) weit unter 300°C liegen, also den gestiegenen Anforderungen nicht entsprechen und auch, daß die Wärmeschockwerte teilweise unbefriedigend sind; außerdem weisen die Lackdrähte eine für die Ansprüche der modernen Motorenwickeltechnik zu niedrige Oberflächenhärte auf.All of these winding wires coated with the aforementioned thermoplastics have the disadvantage that their softening temperatures (according to DIN 46453) are far below 300 ° C, ie they do not meet the increased requirements and also that the thermal shock values are in part unsatisfactory; the enamelled wires also have a surface hardness that is too low for the requirements of modern motor winding technology.

Es wurde nun überraschenderweise gefunden, daß spezielle teilkristalline thermoplastische Polykondensate mit Kristallitschmelzpunkten oberhalb 250°C hier entscheidende Verbesserungen bringen.It has now surprisingly been found that special semi-crystalline thermoplastic polycondensates with crystallite melting points above 250 ° C. bring decisive improvements here.

Gegenstand der Erfindung ist also ein Verfahren zur Herstellung von sogenannten lackisolierten Wickeldrähten durch Extrusion von teilkristallinen thermoplastischen Polykondensaten mit Kristallitschmelzpunkten oberhalb 170°C, vorzugsweise oberhalb 250°C, dadurch gekennzeichnet, daß aromatische Polyätherketone mit wiederkehrenden Einheiten der Formel

Figure imgb0001
wobei Ar für aromatische Reste, die gleich oder verschieden sein können, insbesondere für Benzol-, Naphthalin- oder Diphenylreste steht, und worin n eine ganze Zahl von 50 bis 200 bedeutet, verwendet werden.The invention thus relates to a process for the production of so-called enamel-insulated winding wires by extrusion of partially crystalline thermoplastic polycondensates with crystallite melting points above 170 ° C, preferably above 250 ° C, characterized in that aromatic polyether ketones with recurring units of the formula
Figure imgb0001
 where Ar is aromatic radicals, which may be the same or different, in particular benzene, naphthalene or diphenyl radicals, and where n is an integer from 50 to 200, are used.

Es war in keiner Weise vorauszusehen und ist daher völlig überraschend,daß mit aromatischen Poly- ätherketonen, d.i. mit Thermoplasten, beschichtete Wickeldrähte eine Erweichungstemperatur von weit über 300°C sowie eine Oberflächenhärte von 2 - 3 H besitzen, wie sie sonst nur Wickeldrähte mit Duroplastbeschichtungen erreichen.It was by no means foreseeable and it is therefore completely surprising that coatings were carried out with aromatic polyetherketones, ie with thermoplastics Winding wires have a softening temperature of well over 300 ° C and a surface hardness of 2 - 3 H, which is normally only achieved with winding wires with thermoset coatings.

Im Vergleich zu den Werten bei den übrigen Thermoplasten ist außerdem der Wärmeschockwert der mit Polyätherketonüberzügen isolierten Wickeldrähte überraschenderweise stark verbessert.In comparison to the values for the other thermoplastics, the thermal shock value of the winding wires insulated with polyether ketone coatings has surprisingly been greatly improved.

Beispiel:Example:

Beschichtungsmaterial: Teilkristallines aromatisches Polyätherketon der summarischen Formel

Figure imgb0002
Coating material: Semi-crystalline aromatic polyetherketone of the summary formula
Figure imgb0002

Kristallitschmelzpunkt 335°C.Crystallite melting point 335 ° C.

VerarbeitungsbedingungenProcessing conditions

Extrudertemperaturen vom Einlauf bis zur Düse:

Figure imgb0003
Extruder temperatures from the inlet to the nozzle:
Figure imgb0003

Eigenschaften der Wickeldrähte:

Figure imgb0004
Figure imgb0005
 Properties of the winding wires:
Figure imgb0004
Figure imgb0005

Claims (1)

Verfahren zur Herstellung von sogenannten lackisolierten Wickeldrähten durch Extrusion von teilkristallinen thermoplastischen Polykondensaten mit Kristallitschmelzpunkten oberhalb 170°C, vorzugsweise oberhalb 250°C, dadurch gekennzeichnet, daß aromatische Polyätherketone mit wiederkehrenden Einheiten der Formel
Figure imgb0006
wobei Ar für aromatische Reste, die gleich oder verschieden sein können, insbesondere für Benzol-, Naphthalin- oder Diphenylreste steht, worin n-eine ganze Zahl von 50 bis 200 bedeutet, verwendet werden.Process for the production of so-called enamel-insulated winding wires by extrusion of partially crystalline thermoplastic polycondensates with crystallite melting points above 170 ° C, preferably above 250 ° C, characterized in that aromatic polyether ketones with recurring units of the formula
Figure imgb0006
 where Ar is aromatic radicals, which may be the same or different, in particular benzene, naphthalene or diphenyl radicals, in which n is an integer from 50 to 200, are used.
EP80105156A 1979-09-12 1980-08-29 Process for producing insulated winding wire by extrusion of thermoplasts Expired EP0025538B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80105156T ATE7975T1 (en) 1979-09-12 1980-08-29 PROCESS FOR MANUFACTURING INSULATED WINDING WIRE BY EXTRUSION OF THERMOPLASTICS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2936795A DE2936795C2 (en) 1979-09-12 1979-09-12 Process for the production of insulated winding wires by extrusion of thermoplastics
DE2936795 1979-09-12

Publications (3)

Publication Number Publication Date
EP0025538A2 true EP0025538A2 (en) 1981-03-25
EP0025538A3 EP0025538A3 (en) 1981-10-07
EP0025538B1 EP0025538B1 (en) 1984-06-13

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ID=6080629

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EP80105156A Expired EP0025538B1 (en) 1979-09-12 1980-08-29 Process for producing insulated winding wire by extrusion of thermoplasts

Country Status (10)

Country Link
EP (1) EP0025538B1 (en)
JP (1) JPS5673818A (en)
AT (1) ATE7975T1 (en)
AU (1) AU6144180A (en)
CA (1) CA1136817A (en)
DE (2) DE2936795C2 (en)
DK (1) DK386380A (en)
ES (1) ES494986A0 (en)
FI (1) FI802708A (en)
IN (1) IN154846B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983001864A1 (en) * 1981-11-19 1983-05-26 Lehmann, Helmut Method for impregnating lapped wires or leeds by extrusion of plastic material
DE19748529A1 (en) * 1997-11-03 1999-03-04 Siemens Ag Insulation of electric wound coils of electric machine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5837618U (en) * 1981-09-08 1983-03-11 三菱電線工業株式会社 insulated wire
JPS59207233A (en) * 1983-05-11 1984-11-24 住友化学工業株式会社 Coating method
JPS62148234A (en) * 1985-12-23 1987-07-02 Sumitomo Bakelite Co Ltd Manufacture of electric wire insulated with thermoplastic aromatic polyether ketone

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1548761A (en) * 1966-12-01 1968-12-06
DE2635895A1 (en) * 1975-08-11 1977-03-03 Raychem Corp METHOD OF INSULATION OF POLYMERS

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH616264A5 (en) * 1976-07-01 1980-03-14 Maillefer Sa

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1548761A (en) * 1966-12-01 1968-12-06
DE2635895A1 (en) * 1975-08-11 1977-03-03 Raychem Corp METHOD OF INSULATION OF POLYMERS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983001864A1 (en) * 1981-11-19 1983-05-26 Lehmann, Helmut Method for impregnating lapped wires or leeds by extrusion of plastic material
EP0080138A1 (en) * 1981-11-19 1983-06-01 Dr. Beck & Co. AG Method of impregnating spun-coated wires and stranded wires by extrusion of thermoplastics
DE19748529A1 (en) * 1997-11-03 1999-03-04 Siemens Ag Insulation of electric wound coils of electric machine

Also Published As

Publication number Publication date
DE2936795C2 (en) 1982-12-09
JPS5673818A (en) 1981-06-18
DE2936795A1 (en) 1981-04-02
DE3068209D1 (en) 1984-07-19
ATE7975T1 (en) 1984-06-15
DK386380A (en) 1981-03-13
AU6144180A (en) 1981-03-19
CA1136817A (en) 1982-12-07
EP0025538A3 (en) 1981-10-07
ES8106630A1 (en) 1981-08-01
FI802708A (en) 1981-03-13
EP0025538B1 (en) 1984-06-13
ES494986A0 (en) 1981-08-01
IN154846B (en) 1984-12-15

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