EP0623936B1 - Elektroisolationspapier - Google Patents

Elektroisolationspapier Download PDF

Info

Publication number
EP0623936B1
EP0623936B1 EP94106715A EP94106715A EP0623936B1 EP 0623936 B1 EP0623936 B1 EP 0623936B1 EP 94106715 A EP94106715 A EP 94106715A EP 94106715 A EP94106715 A EP 94106715A EP 0623936 B1 EP0623936 B1 EP 0623936B1
Authority
EP
European Patent Office
Prior art keywords
insulating paper
electrical insulating
paper
melamine
weight
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.)
Expired - Lifetime
Application number
EP94106715A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0623936A1 (de
Inventor
Heinz Berbner
Gernot Dr. Herbst
Karl Ott
Hans Dieter Zettler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Publication of EP0623936A1 publication Critical patent/EP0623936A1/de
Application granted granted Critical
Publication of EP0623936B1 publication Critical patent/EP0623936B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H13/22—Condensation polymers of aldehydes or ketones
    • 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
    • H01B3/48—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials
    • H01B3/52—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances fibrous materials wood; paper; press board
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/251—Mica
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/699—Including particulate material other than strand or fiber material

Definitions

  • the invention relates to a temperature-resistant, simple and inexpensive to produce electrical insulating paper based on synthetic resin fibers and polymer fibrils, which act as a binder for the fibers.
  • Insulating materials used to date are, for example, resin-impregnated glass fleeces or glass fabrics, flat structures made from special blends with cellulose, films made from polyester or polyamides, and papers made from aromatic polyamides. Although these insulating materials generally have good electrical and usually also good mechanical properties, their production is cost-intensive, so that the electrical machines are not insignificantly more expensive as a result. Some of these papers are very brittle and break especially when subjected to kinking. Papers made from aromatic polyamides are characterized by particularly good temperature resistance, their mechanical properties, in particular the high elastic recovery, are disadvantageous during processing. The permanent glow resistance also leaves something to be desired.
  • the invention was therefore based on the object of providing electrical insulation materials which have good mechanical and electrical properties, are temperature-resistant and can be produced at low cost.
  • the electrical insulating papers according to the invention are produced by the processes customary in the paper industry.
  • the fibrous or pulverulent starting materials are suspended in water and a dispersion with a solids content of preferably 0.1 to 10% by weight is produced.
  • This is applied to conventional paper machines, such as Fourdrinier or rotary sieve machines, where it is spread out over a large area and the majority of the water is sucked off.
  • the melamine resin fibers are held together by the fibrils, so that the resulting base paper receives sufficient initial wet strength.
  • This base paper is then dried at temperatures between 120 and 180 ° C, for example by passing it over heated rollers. It is then pressed at temperatures above 200 ° C.
  • any existing synthetic resin powder hardens or melts and causes additional hardening of the paper.
  • the paper can also be further solidified by subsequent impregnation with resins, for example with epoxy, melamine, polyester, silicone, phenol, or acrylate resins, and with polyimides. Lacquers based on alkylphenols, imides or silicones can be used.
  • Composite materials can also be produced by laminating the electrical insulating paper with foils, for example with polyimide foils.
  • a melamine resin is produced in which about 10 mol% of the melamine is replaced by 5-hydroxy-3-oxapentylamino-1,3,5-triazine.
  • This melamine resin is spun into fibers with a length of 6 mm, a thickness of 15 ⁇ m and a specific surface area of 0.52 m 2 ⁇ g -1 .
  • 70 parts of these melamine resin fibers together with 15 parts of aramid fibrils (Kevlar @ T-979, length of the fibrils in the range from 0.5 to 6 mm; specific surface area of 7.1 m 2 g -1 ) are slurried in water.
  • a commercially available melamine / formaldehyde precondensate resin (KAURAMIN® 700 from BASF; characteristics of a 50% strength by weight aqueous solution: viscosity at 20 ° C. immediately: 20-50 mPa.s; viscosity at 20 ° C. after 60 h: 50-80 mPas; pH: 8.8 - 9; density: 1.22 g / cm 3 ) mixed homogeneously.
  • the suspension obtained with a solids content of 0.5% is placed in a sheet former and the water is suctioned off.
  • the raw paper obtained has an initial wet strength of 120 g and a thickness of 1.5 mm.
  • the electrical insulation paper obtained has the following properties: thickness 0.25 mm Dielectric strength (according to DIN 53 481) 35 kVmm -1 Dielectric constant (at 10 3 Hz and 50 ° C) 2.6 Specific volume resistance (according to DIN 53 482) 4.10 16 [ ⁇ ⁇ cm] Tensile strength (according to DIN 53 455) 420 Ncm -1 Elongation at break (according to DIN 53 455) 20% Tear resistance (according to DIN 53 515) 850 N

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Insulating Materials (AREA)
  • Paper (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
EP94106715A 1993-05-04 1994-04-29 Elektroisolationspapier Expired - Lifetime EP0623936B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4314620 1993-05-04
DE4314620A DE4314620A1 (de) 1993-05-04 1993-05-04 Elektroisolationspapier

Publications (2)

Publication Number Publication Date
EP0623936A1 EP0623936A1 (de) 1994-11-09
EP0623936B1 true EP0623936B1 (de) 1997-12-17

Family

ID=6487078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94106715A Expired - Lifetime EP0623936B1 (de) 1993-05-04 1994-04-29 Elektroisolationspapier

Country Status (8)

Country Link
US (1) US5478640A (ko)
EP (1) EP0623936B1 (ko)
JP (1) JP3345161B2 (ko)
KR (1) KR100322167B1 (ko)
AU (1) AU665906B2 (ko)
CA (1) CA2122779C (ko)
DE (2) DE4314620A1 (ko)
TW (1) TW387025B (ko)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6287681B1 (en) 1999-07-20 2001-09-11 The Mead Corporation Preparation of wear-resistant laminates using mineral pigment composites
US6517674B1 (en) 2000-02-02 2003-02-11 The Mead Corporation Process for manufacturing wear resistant paper
US20080105395A1 (en) * 2005-01-18 2008-05-08 Naoyuki Shiratori Polyketone Fiber Paper, Polyketone Fiber Paper Core Material For Printed Wiring Board, And Printed Wiring Board
DE102005035690A1 (de) * 2005-07-27 2007-02-01 Basf Ag Aminoplastharzvliesfilm zur Beschichtung von Substraten
US9437348B2 (en) * 2010-12-17 2016-09-06 3M Innovative Properties Company Electrical insulation material
EP2520619A1 (de) * 2011-05-05 2012-11-07 Siemens Aktiengesellschaft Verfahren zum Herstellen eines porösen Partikelverbunds für ein elektrisches Isolationspapier
EP2617896A1 (en) * 2012-01-20 2013-07-24 ABB Technology Ltd Cellulose based electrically insulating material
DE102012103775A1 (de) 2012-04-27 2013-10-31 PaCon Ltd. & Co.KG Elektroisolationspapier
RU2602117C2 (ru) 2012-06-15 2016-11-10 3М Инновейтив Пропертиз Компани Электроизоляционный материал
CN113322714B (zh) * 2020-02-28 2022-12-02 中国科学院成都有机化学有限公司 一种聚酰亚胺复配型抗高温老化助剂及其绝缘纸和制备方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3434917A (en) * 1966-03-07 1969-03-25 Grace W R & Co Preparation of vermiculite paper
JPS4987821A (ko) * 1972-12-28 1974-08-22
US4271228A (en) * 1980-02-04 1981-06-02 Hollingsworth & Vose Company Sheet material containing exfoliated vermiculite
DE3341461A1 (de) * 1983-11-17 1985-05-30 Basf Ag, 6700 Ludwigshafen Flaechiges dichtungsmaterial
DE3534740A1 (de) * 1985-09-28 1987-04-09 Basf Ag Formkoerper aus melaminharzen mit erhoehter festigkeit
DE3786335T2 (de) * 1986-11-28 1993-09-30 Hitachi Ltd Pressspan mit niedriger dielektrischer Konstante für ölimpregnierte Isolierung.
DE4123050A1 (de) * 1991-07-12 1993-01-14 Basf Ag Modifizierte melamin-formaldehyd-harze
FR2685363B1 (fr) * 1991-12-24 1994-02-04 Rhone Poulenc Fibres Papiers synthetiques a base de fibres, pulpe et liant thermostables et leur procede d'obtention.

Also Published As

Publication number Publication date
JP3345161B2 (ja) 2002-11-18
CA2122779C (en) 2004-04-06
DE59404802D1 (de) 1998-01-29
AU6187294A (en) 1994-11-10
KR940026977A (ko) 1994-12-10
US5478640A (en) 1995-12-26
DE4314620A1 (de) 1994-11-10
TW387025B (en) 2000-04-11
CA2122779A1 (en) 1994-11-05
AU665906B2 (en) 1996-01-18
KR100322167B1 (ko) 2002-05-13
EP0623936A1 (de) 1994-11-09
JPH06316892A (ja) 1994-11-15

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