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
• • 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
• • 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
  • Y10T428/12—All metal or with adjacent metals
  • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
  • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
  • Y10T428/12597—Noncrystalline silica or noncrystalline plural-oxide component [e.g., glass, etc.]
• • 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
  • Y10T428/12—All metal or with adjacent metals
  • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
  • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
  • Y10T428/12611—Oxide-containing component
• • 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
  • Y10T428/12—All metal or with adjacent metals
  • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
  • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
  • Y10T428/12611—Oxide-containing component
  • Y10T428/12618—Plural oxides
• • 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
  • Y10T428/12—All metal or with adjacent metals
  • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
  • Y10T428/1266—O, S, or organic compound in metal component
• • 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
  • Y10T428/12—All metal or with adjacent metals
  • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
  • Y10T428/1266—O, S, or organic compound in metal component
  • Y10T428/12667—Oxide of transition metal or Al
• • 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
  • Y10T428/12—All metal or with adjacent metals
  • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
  • Y10T428/12674—Ge- or Si-base component

Definitions

• the invention relates to a coating composition for metallic conductors, such as wires, with improved resistance to partial discharge and good mechanical properties.
• Three-phase motors e.g. motors controlled by frequency converters, or high-voltage asynchronous machines require the use of wire windings that meet the high requirements for thermal durability and mechanical properties, especially the bending strength of the insulating layer, in order to be able to survive high-voltage loads or pulsed voltage loads without damage.
• wire windings of electrical equipment Another requirement for wire windings of electrical equipment is the partial discharge resistance of the wire coatings.
• wire windings lying next to one another can be subjected to high-voltage loads or pulse-shaped
• the coatings must have a high resistance to partial discharge.
• a coating composition which consists of a binder and a particulate material, the particulate material being present in the binder in an amount of 1 to 65% by weight and metal oxides, for example Titanium dioxide, zirconium oxide, zinc oxide, iron oxide or alumina can be.
• the particulate material has no chemical reactivity.
• At least one of the electrically insulating lacquer layers contains an organically modified silica (hetero) polycondensate, produced by hydrolytic condensation of compounds of silicon and optionally boron, uminium, phosphorus, tin, lead, the transition metals, lanthanides and actinides , wherein the monomer units essentially consist of both inorganic and organic components, which are then crosslinked.
• an organically modified silica (hetero) polycondensate produced by hydrolytic condensation of compounds of silicon and optionally boron, uminium, phosphorus, tin, lead, the transition metals, lanthanides and actinides , wherein the monomer units essentially consist of both inorganic and organic components, which are then crosslinked.
• the result is coatings with good thermal shock resistance and surface quality. High flexibility is not achieved.
• the organometallic compounds used are monomeric compounds.
• the object of the present invention is therefore to provide a coating composition for metallic conductors, in particular wires, the Partial discharge resistance is increased compared to the solutions of the prior art, especially when the coated wire is stretched.
• the applicability of the coating composition as a single-layer application or as a lacquer layer in a multi-layer application, and the surface quality and flexibility of the coating are to be improved.
• the reactive nanomer of component A is based on the element-oxygen network, on the surface of which reactive functions R, and optionally non-reactive and / or partially reactive functions R 2 and R 3 are bound via the oxygen of the network,
• Rj in an amount of 98% by weight, preferably up to 40% by weight, particularly preferably up to 30% by weight, R 2 and R 3 in an amount of 0 to 97% by weight.
• % preferably 0 to 40, particularly preferably 0 to 10% by weight are contained in the nanomer according to the invention, in which
• R stands for radicals of the metal acid esters, such as, for example, OTi (OR 4 > 3 , OZrCO ⁇ , OSiCOR a , OSiC a; OHf (OR4) 3 ; NGO; urethane, epoxy, epoxy, carboxylic anhydride;
• C C double bond systems such as methacrylate, acrylate; OH; alcohols bound via oxygen, for example bis (l-hydroxymethylpropane) -l-methylolate, 2,2-bis- (hydroxymethyl) -l-propanol-3-propanolate, 2-hydroxypropan-l-ol-3-olate, esters, ethers e.g.
• C C, metal esters, silane-containing polyurethanes, polyesters, poly (THEIC) esters, poly (THEIC ) ester imides, polyamide imides, polyamides, polysiloxanes, polysulfides, polyvinyl formals, polymers, e.g. B. Polyacrylates.
• R 2 represents residues of aromatics, for example phenyl, cresyl, nonylphenyl, aliphatics, for example branched, linear, saturated, unsaturated alkyl radicals Cl to C30, fatty acid derivatives; linear or branched esters and / or ethers,
• R 3 stands for resin residues, e.g. polyurethane, polyester, polyester imide, THEIC
• Polyesterimide poly-titanium ester resins and their derivatives; Polysiloxane resins with organic derivatives; Polysulfide, polyamide, polyamideimide, polyvinylformal resins, and / or polymers, such as e.g. Polyacrylates, polyhydantoins, polybenzimidazoles, and
• Triethylene glycolate Triethylene glycolate
• Alcoholates for example l-hydroxymethyl-propane-l, l-dimethylolate, 2,2-bis (hydroxymethyl) -l, 3-propanediolate, 2-hydroxypropan-l, 3-diolate, ethylene glycolate, neopentyl glycolate, hexanediolate, butanediolate ;
• Fats for example castor oil and / or chelating agents, for example aminotriethanolate, aminodiethanolate, acetylacetonate, ethyl acetoacetate, lactate.
• the nanomer of component A) according to the invention consists of an element-oxygen network, on the surface of which the reactive functions R.
• the nanomers with the functions R to R described are particles whose average radius is in the range from 1 to 300 nm, preferably in a range from 2 to 80 nm, particularly preferably in a range from 4 to 50 nm.
• the nanomer according to the invention is contained in the coating composition in an amount of 1 to 60% by weight, preferably 5 to 30% by weight.
• the element-oxygen network of the nanomer according to the invention contains the above-mentioned elements which are bound via the oxygen.
• the network can contain one or more, identical or different elements in a uniform and / or non-uniform order, each bound to the oxygen.
• the inorganic network preferably contains the elements from the series titanium, silicon, aluminum and / or zirconium.
• organic units such as e.g. Residues of aromatics, aliphatics, esters, ethers,
• Alcoholates, fats and chelating agents, imides, amides, acrylates can be implemented.
• OTiCO s As function R, OTiCO s, OZrCO s, acetylacetonate, 2-hydroxyethanolate, diethylene glycolate, OH are preferably used.
• function R 3 residues of polyesterimides and / or THEIC polyesterimide resins are preferably used.
• function R acrylate resin, aminotriethanolate, acetylacetonate, polyurethane resin and butyl diglycolate are preferably used.
• the respective radicals R to R can be the same or different.
• Fig. 3 Fig. 4 Fig. 1 shows a nanomer, which has R, OH groups as a reactive function. Via these OH functions, it is able to react with the corresponding functions of, for example, esters, carboxylic acids, isocyanates, epoxides, anhydrides and the like.
• the reactivity of the nanomer according to Fig. 2 is determined by the OH functions as R : and the different resin sequences polyesterimide and THEIC polyesterimide as examples of R 3 .
• the nanomers according to Fig. 3 and 4 are equipped with ortho-titanium ester functions as a reactive component Rj.
• the nanomer according to Fig. 4 also has a THEIC polyester imide as the polymer fragment R 3 .
• organic radicals Z stand for isopropyl, butyl, butyl diglycol, triethanolamine, acetylacetone, polyamideimide, polyurethane and polyesterimide groups as well
• Aminotriethanolat and epoxy groups in particular selected from the group of R ,.
• Coating composition may be included.
• polymeric element-organic compounds are inorganic-organic hybrid polymers, as mentioned, for example, in the as yet unpublished German patent application 198 41 977.5.
• monomeric element-organic compounds are ortho-titanium acid esters and / or otho-zirconic acid esters such as nonyl, cetyl,
• Such additional polymeric and / or monomeric element-organic compounds for example with a content of 0 to 70 wt .-%, in the invention Composition included.
• Component A) can be prepared by conventional hydrolysis and condensation reactions of corresponding element-organic or element-halogen compounds in the presence of organic reactants corresponding to
• Organic resin and / or nanomer components can also be reacted with corresponding element-oxide compounds to give the corresponding nanomers.
• composition according to the invention can be one or more as component B)
• Contain binders as are known and customary in the wire coating sector.
• These can be, for example, polyesters, polyester imides, polyamides, polyamide imides, THEIC polyester imides, polytitanic acid ester THEIC ester imides, phenolic resins, melamine resins, polymethacrylimides, polyimides, polybismaleimides, polyetherimides, polybenzoxazinediones, polyhydantoins, polyvinyl formals,
• Polyvinyl acetals and / or blocked isocyanates are e.g. also epoxies and acrylic resins.
• Polyester and / or polyester imides, in particular THEIC polyester imides, are preferably used.
• polyesters which can be used are those which are known for wire coating. These can also be polyesters with heterocyclic, nitrogen-containing rings, for example polyesters with condensed imide and hydantoin and gasolineazol structures.
• the polyesters are in particular condensation products of polyvalent aliphatic, aromatic and / or cycloaliphatic carboxylic acids or their Anhydrides, polyhydric alcohols, in the case of the compounds containing imide-containing polyesteramino groups, optionally with a proportion of monofunctional compounds, for example monohydric alcohols.
• the saturated polyesterimides are preferably based on terephthalic acid polyesters which, in addition to diols, can also contain polyols and, as an additional dicabonic acid component, a reaction product of diaminodiphenylmethane and trimellitic anhydride.
• Unsaturated polyester resins and / or polyesterimides can also be used.
• Unsaturated polyesters and / or polyester imides are preferably used.
• component B) can be polyamides, for example thermoplastic polyamides and polyamide imides, such as those e.g. are made from trimellitic anhydride and the isocyanato-diphenylmethane.
• Phenolic resins and / or polyvinyl formals which can be used as component B) are, for example, novolaks, obtainable by polycondensation of phenols and aldehydes, or polyvinyl formals, obtainable from polyvinyl alcohols and aldehydes and / or ketones.
• Capped isocyanates such as e.g. Adducts of polyols, amines, CH-acidic compounds (e.g. acetoacetic ester,
• compositions can contain pigments and / or fillers, for example coloring inorganic and / or organic pigments, such as
• Titanium dioxide or carbon black and effect pigments, such as metal flake pigments and / or pearlescent pigments.
• additives which may be present are customary paint additives, for example extenders, plasticizing components, accelerators (e.g. metal salts, substituted amines), initiators (e.g. photoinitiators, heat-initiators), stabilizers (e.g.
• compositions may contain organic solvents such as aromatic hydrocarbons, N-methylpyrrolidone, cresols, phenols, xylenols, styrenes, vinyl toluene, methyl acrylates.
• organic solvents such as aromatic hydrocarbons, N-methylpyrrolidone, cresols, phenols, xylenols, styrenes, vinyl toluene, methyl acrylates.
• the compositions according to the invention can contain, for example, 30 to 95% by weight of organic solvents.
• composition according to the invention can also be mixed with conventional wire enamels and then applied by customary methods.
• the composition according to the invention can be applied by conventional methods regardless of the type and diameter of the wire used.
• the wire can be coated directly with the composition according to the invention and then baked in an oven.
• the coating and baking can optionally be carried out several times in succession.
• the furnaces can be arranged horizontally or vertically, with the coating conditions, such as the duration and number of coatings, baking temperature and coating speed, depending on the type of wire to be coated.
• the coating temperatures can range from room temperature to 400 ° C.
• Composition in particular component A) and component B), undergo a chemical reaction with one another.
• various chemical reactions are possible, for example transesterification reactions, polymerization reactions, addition reactions, condensation reactions.
• composition according to the invention can be used regardless of the type and diameter of the wire, for example wires with a diameter of 5 ⁇ m to 6 mm can be coated.
• the usual metallic conductors can be used as wires, for example made of copper, aluminum, zinc, iron, gold, silver or alloys thereof.
• the coating composition according to the invention can be contained as part of a multi-layer coating of the wire.
• This multi-layer coating can contain at least one coating composition according to the invention.
• the wires can be coated with or without existing coatings.
• Existing coatings can be, for example, insulation coatings and flame retardant coatings.
• the layer thickness of the coating according to the invention can differ greatly.
• coating according to the invention can also e.g. serve as a topcoat for improved mechanical protection and the creation of desired surface properties and smoothing.
• Compositions based on polyamides, polyamideimides and polyimides are particularly suitable as topcoats.
• composition according to the invention is also suitable as a single-layer application.
• the composition can be applied in customary layer thicknesses. Thin layers can also be applied without affecting the partial discharge resistance achieved according to the invention and the adhesion, strength and stretchability of the coatings.
• the dry layer thickness can vary according to the standardized values for thin and thick wires.
• the coatings obtained with the composition according to the invention enable the coating to be made more resistant to partial discharge than the previously known compositions, as a result of which a permanent load under the action of high voltages, in particular pulsed voltages, becomes possible. They are characterized by increased durability and a long service life compared to the coatings based on monomeric and / or polymeric element-organic compounds.
• the resistance to partial discharge of the coated wires can be increased, so that they are particularly suitable for use in the case of high-voltage loads and loads of pulsed high voltages.
• trimellitic anhydride (TMA) and 99.0 g methylenediamine (DADM).
• TMA trimellitic anhydride
• DADM methylenediamine
• the present resin solution with 882.0 g cresol, 273.0 g Solvesso 100, 100.0 g xylene, 9.0 g of a commercially available phenolic resin A, 45.0 g of a commercially available phenolic resin B and 18.0 g ortho -Tetra-butyl ester ready-made.
• the resulting wire enamel has a solids content of 31.3% and a viscosity of 410 mPas.
• Example lb (comparison)
• TMA trimellitic anhydride
• DADM methylenedianiline
• the resulting wire enamel has a solids content of 30.8% and one
• TBEIC tris (2-hydroxyethyl) isocyanurate
• ethylene glycol 93.2 g
• DMT dimethyl terephthalate
• zinc acetate 0.5 g
• 60 g of methanol are distilled off.
• TMA trimellitic anhydride
• DADM methylene dianiline
• the present resin solution is finished with 1100.0 g cresol, 355.0 g Solvesso 100, 129.0 g xylene, 11.0 g of a commercially available phenolic resin A, 50.0 g of a commercially available phenolic resin B.
• the resulting wire enamel has a solids content of 30.5% and a viscosity of 370 mPas.
• Solids content lg, lh, 180 ° C [%] DIN EN ISO 3251 Viscosity at 25 ° C [mPas] or [Pas] DIN 53015
• Copper wires with a bare wire thickness of 0.3 mm are coated with the wire enamels described according to Examples 2 to 5, as well as Comparative Examples la and Ib (single-layer enamelling) on a conventional wire enamelling plant.
• the resulting layer thickness is 18 ⁇ m.
• Table 1 Technical data of the coated enamelled copper wires (according to DIN 46453 or DIN EN 60851)

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• 1999
  • 1999-03-06 DE DE19909954A patent/DE19909954A1/de not_active Withdrawn
• 2000
  • 2000-03-01 AU AU36568/00A patent/AU763369B2/en not_active Ceased
  • 2000-03-01 MX MXPA01009033A patent/MXPA01009033A/es unknown
  • 2000-03-01 CN CNB008046654A patent/CN1192397C/zh not_active Expired - Lifetime
  • 2000-03-01 EP EP00915160A patent/EP1166283B1/fr not_active Expired - Lifetime
  • 2000-03-01 JP JP2000604423A patent/JP4384362B2/ja not_active Expired - Fee Related
  • 2000-03-01 TR TR2001/02579T patent/TR200102579T2/xx unknown
  • 2000-03-01 KR KR10-2001-7011345A patent/KR100472738B1/ko not_active IP Right Cessation
  • 2000-03-01 WO PCT/EP2000/001720 patent/WO2000054286A1/fr active IP Right Grant
  • 2000-03-01 DE DE50004076T patent/DE50004076D1/de not_active Expired - Lifetime
  • 2000-03-01 AT AT00915160T patent/ATE252270T1/de not_active IP Right Cessation
  • 2000-03-01 US US09/913,999 patent/US6908692B1/en not_active Expired - Lifetime
  • 2000-03-01 BR BRPI0008834-0A patent/BR0008834B1/pt not_active IP Right Cessation
  • 2000-03-01 CA CA002362157A patent/CA2362157C/fr not_active Expired - Fee Related
  • 2000-03-01 PL PL350766A patent/PL200701B1/pl unknown

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