FR2568714A1 - INSULATING PAPER, PARTICULARLY FOR TRANSFORMER WINDING LAYERS, AND METHOD FOR THE PRODUCTION THEREOF - Google Patents
INSULATING PAPER, PARTICULARLY FOR TRANSFORMER WINDING LAYERS, AND METHOD FOR THE PRODUCTION THEREOF Download PDFInfo
- Publication number
- FR2568714A1 FR2568714A1 FR8511624A FR8511624A FR2568714A1 FR 2568714 A1 FR2568714 A1 FR 2568714A1 FR 8511624 A FR8511624 A FR 8511624A FR 8511624 A FR8511624 A FR 8511624A FR 2568714 A1 FR2568714 A1 FR 2568714A1
- Authority
- FR
- France
- Prior art keywords
- elements
- epoxy resin
- insulating paper
- substrate
- paper
- 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
- 238000004804 winding Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims 2
- 238000004519 manufacturing process Methods 0.000 title description 2
- 239000004760 aramid Substances 0.000 claims abstract description 18
- 229920003235 aromatic polyamide Polymers 0.000 claims abstract description 18
- 239000000758 substrate Substances 0.000 claims abstract description 18
- 239000003822 epoxy resin Substances 0.000 claims abstract description 14
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 14
- 239000004840 adhesive resin Substances 0.000 claims abstract description 11
- 229920006223 adhesive resin Polymers 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000007647 flexography Methods 0.000 claims abstract description 3
- 239000010754 BS 2869 Class F Substances 0.000 claims description 2
- 150000008065 acid anhydrides Chemical class 0.000 claims description 2
- 239000004848 polyfunctional curative Substances 0.000 claims description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 2
- 239000002904 solvent Substances 0.000 claims description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical class C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims 1
- 230000008021 deposition Effects 0.000 claims 1
- 230000008030 elimination Effects 0.000 claims 1
- 238000003379 elimination reaction Methods 0.000 claims 1
- 239000000123 paper Substances 0.000 description 24
- 241000531908 Aramides Species 0.000 description 11
- 239000010410 layer Substances 0.000 description 11
- 239000000835 fiber Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 238000005470 impregnation Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 239000002655 kraft paper Substances 0.000 description 2
- GEYOCULIXLDCMW-UHFFFAOYSA-N 1,2-phenylenediamine Chemical compound NC1=CC=CC=C1N GEYOCULIXLDCMW-UHFFFAOYSA-N 0.000 description 1
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical class C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000004984 aromatic diamines Chemical class 0.000 description 1
- 125000000732 arylene group Chemical group 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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
- H01B3/303—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups H01B3/38 or H01B3/302
- H01B3/305—Polyamides or polyesteramides
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/323—Insulation between winding turns, between winding layers
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Insulating Materials (AREA)
- Paper (AREA)
- Insulating Bodies (AREA)
Abstract
CE PAPIER SE COMPOSE D'UN SUBSTRAT 1 PORTANT DES DEUX COTES UNE STRUCTURE OU UN RESEAU QUI NE RECOUVRE QU'UNE PARTIE DE SA SURFACE ET QUI EST FORME D'ELEMENTS 2 EN COUCHE MINCE DE RESINE ADHESIVE DURCISSABLE. LE SUBSTRAT 1 EST EN PAPIER D'ARAMIDE DE LA CLASSE DE TEMPERATURE H. LES ELEMENTS 2 SONT EN RESINE EPOXY DE LA CLASSE DE TEMPERATURE F AU MOINS. LA STRUCTURE OU LE RESEAU D'ELEMENTS DE RESINE 2 EST DEPOSE PAR HELIOGRAVURE OU FLEXOGRAPHIE SUIVIE D'UN SECHAGE.THIS PAPER CONSISTS OF A SUBSTRATE 1 CARRYING ON BOTH SIDES A STRUCTURE OR A NETWORK WHICH COVERS ONLY PART OF ITS SURFACE AND WHICH IS IN THE FORM OF ELEMENTS 2 IN A THIN LAYER OF HARDENABLE ADHESIVE RESIN. SUBSTRATE 1 IS IN TEMPERATURE CLASS H ARAMID PAPER. ELEMENTS 2 ARE IN TEMPERATURE CLASS F EPOXY RESIN AT LEAST. THE STRUCTURE OR THE NETWORK OF ELEMENTS OF RESIN 2 IS DEPOSITED BY HELIOGRAVURE OR FLEXOGRAPHY FOLLOWED BY DRYING.
Description
L'invention se rapporte à un papier isolant, en particulier pour couchesThe invention relates to insulating paper, in particular for layers
d'enroulement de transformateurs, se composant d'un substrat portant des deux côtés une structure qui ne recouvre que partiellement la totalité de sa surface et qui est faite d'éléments en couche transformer winding, consisting of a substrate carrying on both sides a structure which only partially covers its entire surface and which is made of layered elements
mince de résine adhésive durcissable. thin curable adhesive resin.
Les brevets US-A-3 203 823 et 3 246 271, par exemple, décrivent des papiers isolants tels que spécifiés ci-dessus en préambule. Ils sont destinés en particulier à lier les couches d'enroulement de transformateurs et se composent d'un substrat portant des deux côtés The patents US-A-3,203,823 and 3,246,271, for example, describe insulating papers as specified above in the preamble. They are intended in particular to bond the winding layers of transformers and consist of a substrate carrying on both sides
une structure qui ne recouvre que partiellement la tota- a structure which only partially covers the total
lité de sa surface et qui est faite d'éléments en couche mince de résine adhésive durcissable. Les éléments de résine adhésive sont déposés de manière qu'il subsiste suffisamment d'interstices pour l'imprégnation à l'huile lity of its surface and which is made of elements in a thin layer of curable adhesive resin. The adhesive resin elements are deposited so that sufficient gaps remain for the oil impregnation.
de la matière constituant le substrat. of the material constituting the substrate.
Ce papier isolant est utilisé sous forme d'une couche simple ou multiple entre les couches devant être This insulation paper is used in the form of a single or multiple layer between the layers to be
liées par collage (par exemple entre les couches d'enrou- bonded (for example between the winding layers
lement, les tôles, les conducteurs, les rubans ou les couches isolantes). Le chauffage au four de séchage provoque la fusion des éléments minces de résine adhésive sheets, conductors, tapes or insulating layers). Heating in the drying oven melts thin elements of adhesive resin
et la liaison des couches lors du durcissement ultérieur. and bonding the layers during subsequent hardening.
Le substrat utilisé dans les papiers isolants connus de l'art antérieur consiste en un papier kraft The substrate used in the insulating papers known from the prior art consists of kraft paper
de cellulose contenant des additifs thermostabilisants. cellulose containing heat stabilizing additives.
Toutefois, sa résistance à la température n'est pas However, its temperature resistance is not
suffisante dans de nombreuses applications. sufficient in many applications.
L'invention a donc pour objet un papier isolant tel que spécifié en préambule et convenant également The subject of the invention is therefore an insulating paper as specified in the preamble and also suitable
dans les applications à température élevée. in high temperature applications.
L'invention se caractérise par les particularités suivantes: a) le substrat se compose d'un papier d'aramide de la classe de température H; b) les éléments de résine adhésive se composent d'une résine époxy correspondant au moins à la classe de température F. Conformément à l'invention, le substrat utilisé est un papier d'aramide de la classe de température H. Les aramides sont des polyamides aromatiques The invention is characterized by the following particularities: a) the substrate consists of an aramid paper of temperature class H; b) the adhesive resin elements consist of an epoxy resin corresponding at least to temperature class F. According to the invention, the substrate used is an aramid paper of temperature class H. Aramides are aromatic polyamides
se composant de diamines aromatiques et d'arylène dicar- consisting of aromatic diamines and arylene dicar-
boxylique. Les papiers d'aramide se composent de fibres et de fibrilles d'un polyamide aromatique, les qualités concernant le rapport entre les fibres et les fibrilles boxylic. Aramid papers consist of fibers and fibrils of an aromatic polyamide, the qualities relating to the relationship between fibers and fibrils
ainsi que la densité et l'épaisseur du produit final pou- as well as the density and thickness of the final product for
vant varier. Les fibres et fibrilles se composent essen- before varying. The fibers and fibrils are essentially
tiellement de polymère azoté, polyhétérocyclique, thermi- made of nitrogenous, polyheterocyclic, thermopolymer
quement stable et ayant des aptitudes à former des traces. fairly stable and capable of forming tracks.
Elles se fabriquent par exemple par condensation entre une phénylènediamine, l'acide isophtalique et l'acide téréphtalique. Le papier d'aramide utilisé est de la classe de température H. Sa grande résistance thermique est due à sa structure azotée cyclique. L'utilisation de papier d'aramide comme substrat élargit notablement la They are produced, for example, by condensation between a phenylenediamine, isophthalic acid and terephthalic acid. The aramid paper used is of temperature class H. Its high thermal resistance is due to its cyclic nitrogen structure. The use of aramid paper as a substrate significantly widens the
plage d'application des papiers isolants selon l'invention. range of application of the insulating papers according to the invention.
Les éléments de résine adhésive du papier isolant selon l'invention se composent d'une résine The adhesive resin elements of the insulating paper according to the invention consist of a resin
époxy qui correspond au minimum à la classe de tempéra- epoxy which corresponds at least to the temperature class
ture F (ou à la classe de température H). Les résines époxy utilisées de préférence sont de la classe des bisphénols et contiennent des durcisseurs amino, à base ture F (or to temperature class H). The epoxy resins preferably used are from the class of bisphenols and contain amino hardeners, based on
d'anhydride d'acide ou complexes.acid anhydride or complex.
La production du papier isolant selon l'inven- The production of insulating paper according to the invention
tion s'effectue par exemple de la manière suivante: la structure ou le réseau des éléments de tion is carried out for example in the following way: the structure or the network of the elements of
résine époxy est tout d'abord déposé sur le papier d'ara- epoxy resin is first deposited on the liner paper
mide par héliogravure ou flexographie (la structure ou le réseau est par exemple en forme de losanges et recouvre une proportion déterminée de la surface totale mide by rotogravure or flexography (the structure or the network is for example in the form of diamonds and covers a determined proportion of the total surface
du substrat).substrate).
Les éléments de résine époxy sont ensuite séchés à une température comprise entre 80 et 120 C afin d'éliminer le solvant, les vitesses utilisées de la feuille continue étant comprise entre 15 et 80 m/min selon The epoxy resin elements are then dried at a temperature between 80 and 120 C in order to remove the solvent, the speeds used for the continuous sheet being between 15 and 80 m / min according to
la longueur de l'installation de séchage. the length of the drying facility.
La résine époxy est alors à l'état B et donc ne colle plus, mais par contre peut être remise en fusion The epoxy resin is then in state B and therefore no longer sticks, but on the other hand can be re-melted.
par chauffage et durcie relativement vite à des tempéra- by heating and hardens relatively quickly at temperatures
tures supérieures -à 100 C, de sorte qu'il est possible de lier étroitement les différentes couches d'enroulement tures higher than -100 C, so that it is possible to tightly bond the different winding layers
au moyen du papier isolant.using insulation paper.
L'épaisseur de la couche formée du papier d'aramide peut être comprise entre 20 et 500 microns et l'épaisseur de la couche formée des éléments séchés The thickness of the layer formed from aramid paper can be between 20 and 500 microns and the thickness of the layer formed from dried elements
de résine époxy peut être comprise entre 12 et 40 microns. epoxy resin can be between 12 and 40 microns.
Pour bien faire comprendre l'invention, mention, est faite ci-dessous de certaines valeurs numériques d'un papier d'aramide selon l'invention (c'est-à-dire dont le substrat est formé de papier d'aramide et reçoit une impression de résine époxy): épaisseur du papier isolant 0,05 mm 0,3 mm allongement (%) 9 25 rigidité diélectrique (kV/mm) 21 35 ténacité du collage (N/cm2) à 100 C -- 68 Par contre, un papier isolant de l'art antérieur To clearly understand the invention, mention is made below of certain numerical values of an aramid paper according to the invention (that is to say of which the substrate is formed from aramid paper and receives an epoxy resin impression): thickness of the insulation paper 0.05 mm 0.3 mm elongation (%) 9 25 dielectric strength (kV / mm) 21 35 tenacity of bonding (N / cm2) at 100 C - 68 On the other hand , an insulating paper of the prior art
(dont le substrat est formé de papier kraft) a des résis- (whose substrate is made of kraft paper) has resistance
tances à l'allongement et à la déchirure qui ne corres- tends to elongation and tear which do not correspond to
pondent qu'à une fraction des valeurs correspondantes du lie that at a fraction of the corresponding values of the
papier isolant selon l'invention.insulating paper according to the invention.
Un papier isolant seion l'invention est repré- Insulation paper according to the invention is shown
senté schématiquement sur le dessin sur lequel: la figure 1 est une vue en plan et la figure 2 est une coupe transversale d'un shown schematically in the drawing in which: Figure 1 is a plan view and Figure 2 is a cross section of a
papier isolant.insulating paper.
Il se compose essentiellement d'un substrat 1 formé de papier d'aramide de la classe de température H sur lequel est déposé des deux côtés une structure ou It consists essentially of a substrate 1 formed of aramid paper of temperature class H on which is deposited on both sides a structure or
un réseau d'éléments 2 en couche mince de résine époxy. a network of elements 2 in a thin layer of epoxy resin.
Le réseau de ces éléments 2 ne recouvre que partiellement la totalité de la surface du substrat 1 et laisse donc subsister suffisamment d'espace pour l'imprégnation à The network of these elements 2 only partially covers the entire surface of the substrate 1 and therefore leaves sufficient space for the impregnation to remain.
l'huile du substrat 1.the substrate oil 1.
Les éléments 2 de résine adhésive sont de préférence décalés les uns par rapport aux autres de The adhesive resin elements 2 are preferably offset from one another by
part et d'autre du substrat 1 pour permettre une imprégna- on either side of the substrate 1 to allow impregnation
tion uniforme à l'huile de ce dernier. Les éléments 2 de résine adhésive ont la forme de carrés ou de losanges dans l'exemple représenté de réalisation. Mais bien entendu de nombreuses autres formes sont possibles dans uniform oil tion of the latter. The elements 2 of adhesive resin have the form of squares or diamonds in the example shown. But of course many other forms are possible in
le cadre de l'invention.the scope of the invention.
Les classes de températures mentionnées F The temperature classes mentioned F
et H correspondent à la norme CEI 85-1957. and H correspond to standard IEC 85-1957.
Les fibrilles mentionnées dans la description The fibrils mentioned in the description
sont des particules amorphes du polyamide aromatique qui sont capables de lier les fibres. Un traitement correct, par exemple l'utilisation d'une température convenable permet de transformer les fibrilles en fibres are amorphous particles of the aromatic polyamide which are capable of binding fibers. Correct treatment, for example the use of a suitable temperature transforms the fibrils into fibers
cristallines qui ne se distinguent plus des fibres pro- which are no longer distinguishable from pro-
prement dites d'aramide.actually called aramid.
Claims (4)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP84109059A EP0169921A1 (en) | 1984-07-31 | 1984-07-31 | Insulating paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2568714A1 true FR2568714A1 (en) | 1986-02-07 |
Family
ID=8192084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8511624A Pending FR2568714A1 (en) | 1984-07-31 | 1985-07-30 | INSULATING PAPER, PARTICULARLY FOR TRANSFORMER WINDING LAYERS, AND METHOD FOR THE PRODUCTION THEREOF |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0169921A1 (en) |
| FR (1) | FR2568714A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2601812B1 (en) * | 1986-07-21 | 1988-11-25 | Atesys Sa | ELECTRIC CAPACITOR FOR HIGH TEMPERATURES |
| FR2637729B1 (en) * | 1988-10-07 | 1995-03-10 | Transfix Soc Nouv | HIGH-VOLTAGE / LOW-VOLTAGE DISTRIBUTION TRANSFORMER WITH DRY ISOLATION AND METHOD FOR PRODUCING SUCH A TRANSFORMER |
| BRPI0721226A2 (en) * | 2007-02-06 | 2013-01-01 | Siemens Transformers Austria Gmbh & Co Kg | insulating material for electric machines |
| EP2325853A1 (en) * | 2009-11-18 | 2011-05-25 | ABB Technology AG | Coil for a transformer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3203823A (en) * | 1961-12-04 | 1965-08-31 | Orchard Paper Company | Cellulose with adhesive spots on both sides thereof in non-registering relationship as insulating material for electrical apparatus |
| US3246271A (en) * | 1965-04-16 | 1966-04-12 | Westinghouse Electric Corp | Paper insulation for transformers |
| JPS5028572A (en) * | 1973-07-16 | 1975-03-24 | ||
| JPS577028A (en) * | 1980-06-16 | 1982-01-14 | Mitsubishi Electric Corp | Heat resistant prepreg insulator |
| JPS5763248A (en) * | 1980-10-03 | 1982-04-16 | Japan Atomic Energy Res Inst | Epoxy prepreg material |
-
1984
- 1984-07-31 EP EP84109059A patent/EP0169921A1/en not_active Withdrawn
-
1985
- 1985-07-30 FR FR8511624A patent/FR2568714A1/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3203823A (en) * | 1961-12-04 | 1965-08-31 | Orchard Paper Company | Cellulose with adhesive spots on both sides thereof in non-registering relationship as insulating material for electrical apparatus |
| US3246271A (en) * | 1965-04-16 | 1966-04-12 | Westinghouse Electric Corp | Paper insulation for transformers |
| JPS5028572A (en) * | 1973-07-16 | 1975-03-24 | ||
| JPS577028A (en) * | 1980-06-16 | 1982-01-14 | Mitsubishi Electric Corp | Heat resistant prepreg insulator |
| JPS5763248A (en) * | 1980-10-03 | 1982-04-16 | Japan Atomic Energy Res Inst | Epoxy prepreg material |
Non-Patent Citations (3)
| Title |
|---|
| CHEMICAL ABSTRACTS, vol. 83, no. 12, 22 septembre 1975, page 54, no. 98710t, Columbus, Ohio, US; & JP - A - 75 28 572 (FUJI ELECTRIC CO., LTD.) 24-03-1975 * |
| CHEMICAL ABSTRACTS, vol. 97, no. 24, 13 décembre 1982, page 49, no. 199207d, Columbus, Ohio, US; & JP - A - 82 63 248 (JAPAN ATOMIC ENERGY RESEARCH INSTITUTE HITACHI LTD.) 16-04-1982 * |
| CHEMICAL ABSTRACTS, vol. 97, no. 6, 9 août 1982, page 45, no. 40008t, Columbus, Ohio, US; & JP - A - 82 07 028 (MITSUBISHI ELECTRIC CORP.) 14-01-1982 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0169921A1 (en) | 1986-02-05 |
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