WO2015090935A1 - Composition de résine coulable résistant aux décharges disruptives et au contournement - Google Patents

Composition de résine coulable résistant aux décharges disruptives et au contournement Download PDF

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Publication number
WO2015090935A1
WO2015090935A1 PCT/EP2014/076202 EP2014076202W WO2015090935A1 WO 2015090935 A1 WO2015090935 A1 WO 2015090935A1 EP 2014076202 W EP2014076202 W EP 2014076202W WO 2015090935 A1 WO2015090935 A1 WO 2015090935A1
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WO
WIPO (PCT)
Prior art keywords
resin
insulator
equal
composition according
composition
Prior art date
Application number
PCT/EP2014/076202
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German (de)
English (en)
Inventor
Gernot Swiatkowski
Original Assignee
Siemens Aktiengesellschaft
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Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to CN201480068240.3A priority Critical patent/CN105829390A/zh
Priority to EP14808930.3A priority patent/EP3060595A1/fr
Publication of WO2015090935A1 publication Critical patent/WO2015090935A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
    • C08G59/68—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used
    • C08G59/686—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
    • C08G59/02—Polycondensates containing more than one epoxy group per molecule
    • C08G59/12—Polycondensates containing more than one epoxy group per molecule of polycarboxylic acids with epihalohydrins or precursors thereof
    • 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

Definitions

  • the present invention relates to an insulator casting resin composition
  • an insulator casting resin composition comprising at least one resin and one resin
  • a hardener component wherein the resin component comprises at least one glycidyl ester epoxy resin and the composition additionally comprises at least one imidazole compound.
  • insulators which ensure that the individual busbars of the system's control panel reliably depend on each other, ie electrically isolated run.
  • compositions are described which have improved mechanical and electrical properties. For example, this describes the
  • DE 10 2009 053 253 A1 describes a composition of an insulating resin system for insulating materials in switchgear installations, wherein the insulating resin system comprises an epoxy-based resin and inorganic oxide nanoparticles.
  • This composition can contribute to improved mechanical and electrical properties.
  • an insulator casting resin composition comprises at least one resin and one hardener component, characterized in that the resin component comprises at least one glycidyl ester epoxy resin and the composition additionally comprises at least one imidazole compound, compared to prior art compositions to significantly improved flashover properties. and breakdown properties.
  • the composition according to the invention is therefore able to effectively prevent short circuits between isolated parts of the system and thus can contribute to a longer service life and higher reliability of electrical systems.
  • the isolator composition according to the invention can be advantageously used in particular in the operation of DC voltage (DC) systems. Without being bound by theory, they can be improved electrical properties of the composition can be attributed to improved charge degradation of the insulator compositions.
  • the compositions according to the invention can degrade electrical surface charges, for example, much faster. These electrical charges can accumulate due to the high dielectric resistance of the composition conditionally on the surface of the insulator, which leads to a field increase in the insulator and then to Natural- or
  • the faster charge degradation is achieved in comparison to resin compositions which have no glycidyl ester epoxy resin and no imidazole compounds or only the resin component.
  • the improved charge degradation is thereby most likely made possible by a direct chemical interaction of the imidazole compounds with the glycidyl ester epoxy resin during the curing of the glycidyl ester epoxy resin.
  • the imidazole compounds can react with the glycidyl ester epoxy resin to form at least partially conductive, higher molecular weight compounds characterized by controllable and improved charge and / or stress relaxation.
  • insulators having the composition according to the invention can degrade the surface charges faster, which leads to a lower electrical material loading of the composition.
  • the faster charge degradation can reduce the dielectric aging of the insulator and thus overall higher
  • An insulator casting resin composition in the sense of the invention is a composition which comprises at least one resin component and one hardener component.
  • the resin is at least in some areas of the process pourable, ie low viscosity or liquid, before and can be made by casting in different forms.
  • at least the resin component and the hardener component of the composition react with each other to form a three-dimensional network.
  • the composition (the resin) cures in the molds and can then be demolded.
  • Inventive insulator casting resin compositions have
  • Insulator properties if they have a specific electrical volume resistivity (volume resistivity) of greater than or equal to 10 12 ⁇ / cm, preferably greater than or equal to 10 14 ⁇ / cm, further preferably from 10 16 ⁇ / cm at 20 ° C.
  • volume resistivity electrical volume resistivity
  • the volume resistivities of most materials are tabulated or can be determined by the methods known to those skilled in the art.
  • the G confuseharzzusammen- sets still known in the art additives such as fillers (glass fibers, glass particles, mica, etc.), adhesion promoters, defoamers, catalysts, release agents or flow agents.
  • Suitable resin and hardener components are the combinations of glycidyl ester epoxy resin and corresponding hardener components known to the person skilled in the art. usable
  • Glycidyl ester epoxide resins can be obtained from reactions of organic polybasic acids and epichlorohydrin, .beta.-methylepichlorohydrin, glycidol and / or similar halogen epoxides.
  • the organic polybasic acids can have both an aliphatic, a cycloaliphatic and an aromatic skeleton.
  • Mixtures of different glycidyl ester epoxide resins can also be used in the composition according to the invention.
  • hardener components which are familiar to the person skilled in the art are phenolic resin curing agents, polyamine curing agents, polycarboxylic acid curing agents and the like.
  • phenolic resin curing agents may include phenolic novolac resin, bisphenol novolac resin, poly-p-vinylphenol.
  • Polyamine curing agents can be selected, for example, from the group consisting of diethylenetriamine, triethylenetetramine, tetraethylenepentamine, dicyandiamide, polyamide, polyamide resin, ketimine compound, isophoronediamine, Xylenediamine, m-phenylenediamine, 1,3-bis (aminomethyl) cyclohexane, N-aminoethylpiperazine, 4,4'-diaminodiphenylmethane, 4,4'-diamino-3,3'-diethyldiphenylmethane, diaminodiphenylsulfone and the like.
  • polycarboxylic acid curing agents from the group of organic anhydrides. It is also possible to use mixtures of the different curing agents.
  • Imidazole in the context of the invention are compounds which at least one 1, 3 -diaza-2,4-cyclopentadiene unit of the form have in the molecule, wherein the substitutable hydrogens of the compound independently of one another by identical or different organic radicals R may be substituted.
  • the organic radicals R may independently of one another be selected from the group comprising hydrogen, halogen, alcohol, aldehyde, carboxylic acid, cyano, isocyano, unsubstituted or substituted C 1 -C 30 -alkyl, cycloalkyl, alkenyl, cycloalkenyl, aryl, heteroaryl.
  • the composition may comprise a glycidyl ester epoxy resin, wherein the
  • Glycidyl ester epoxy resin of the following formula (I) corresponds to:
  • R C4 to C10 substituted or unsubstituted alkyl, alkenyl, cycloalkyl, cycloalkenyl, heteroalkyl, aryl, heteroaryl.
  • the cyclic C6 compounds can react as a resin component with the imidazoles to crosslinked resins, which have particularly advantageous electrical properties.
  • this can be a rapid charge reduction, which also has an extremely low temperature dependence.
  • the imidazole compound may be substituted at the 2 position by a C 1 to C 8 alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl group.
  • a particular proportion of the improved conductivity of crosslinked glycidyl ester epoxide resins can be obtained by the use of the abovementioned imidazole compounds.
  • the specified substituents in the 2 position appear to be capable, despite a slight influence on the mechanical parameters of the crosslinked resin and while maintaining the advantageous reaction rate. ability to contribute to a significant improvement in charge reduction. Without being bound by theory, this effect is most likely due to the resulting HOMO / LUMO layers and the particular steric properties of the 2-position substituted imidazole compounds.
  • the imidazole compound may be substituted by at least two sites of the imidazole skeleton by a C 1 to C 8 alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl group.
  • imidazole compounds have proven to be particularly suitable, which carry at least two substituents on Imidazolgrundgerust. These compounds can be characterized by good mechanical strengths, a controllable crosslinking reaction and good electrical properties of the resulting insulator. Larger substituents on the imidazole backbone may be detrimental to the electrical properties.
  • Imidazole compound selected from the group comprising 2-methylimidazole, 2-undecylimidazole, 2-heptadecylimidazole, 1,2-dimethylimidazole, 2-ethyl-4-methylimidazole, 2-phenylimidazole, 2-phenyl-4-methylimidazole, 1 -benzyl -2 - methylimidazole, 1-benzyl-2-phenylimidazole be used.
  • These imidazole compounds have proved to be very suitable, the group comprising 2-methylimidazole, 2-undecylimidazole, 2-heptadecylimidazole, 1,2-dimethylimidazole, 2-ethyl-4-methylimidazole, 2-phenylimidazole, 2-phenyl-4-methylimidazole, 1 -benzyl -2 - methylimidazole, 1-benzyl-2-phenylimidazole be used.
  • Imidazole compound selected from the group comprising 1-cyanoethyl -2-methylimidazole, 1-cyanoethyl -2-undecylimidazole, 1-cyanoethyl -2-ethyl-4-methylimidazole, 1-cyanoethyl -2-phenyl-imidazole be used.
  • These imidazole compounds have proven to be very suitable to significantly increase the service life of insulators.
  • in particular embodiment in particular embodiment, in particular
  • Imidazole compound selected from the group comprising 2-phenyl-4, 5 -dihydroxy methylimidazole, 2-phenyl-4-methyl-5-hydroxymethylimidazole be used. These imidazole compounds have proved to be very suitable, the
  • imidazole compound selected from the group consisting of 2-methyl-imidazoline, 2-phenylimidazoline can be used.
  • Imidazole compounds have proven to be very suitable for significantly increasing the service life of insulators.
  • the imidazole may be selected from the group consisting of 2-methylimidazole, 1, 2-dimethylimidazole, 2,4-dimethylimidazole.
  • These imidazole compounds which are distinguished by one or two methyl substituents on the imidazole skeleton, show very rapid charge degradation and, compared to the pure glycidyl ester epoxide resins, only insignificantly changed mechanical properties. The result is that the resulting insulators have significantly longer service lives compared to the standard insulators under electrical load.
  • the composition may contain an imidazole compound in a concentration of greater than or equal to 0.01% by weight and less than or equal to 10% by weight, based on the weight of the resin component.
  • This amount of imidazole has been found to be particularly suitable to be able to contribute to an accelerated charge reduction of electrically stressed insulators. Furthermore, this proportion of imidazole compounds only insignificantly influences the curing reaction, which can lead to crosslinked glycidylester epoxy resins which are only insignificantly impaired in their mechanical strength. Smaller amounts of imidazole are not according to the invention, since the effect on the electrical conductivity could then be too low. HOE here concentrations can lead to worse mechanical properties.
  • an imidazole compound may be in a concentration of greater than or equal to 0.1% by weight and less than or equal to 8% by weight, more preferably in a concentration of greater than or equal to 1.0% by weight and less than or equal to 6% by weight be contained on the weight of the resin component.
  • the hardener component of the composition according to the invention can be selected from the group comprising phthalic anhydride, tetrahydrophthalic anhydride, methylnadic anhydride, hydrogenated methylnadicanhydride, methylhexahydrophthalic anhydride, hexahydrophthalic anhydride, methyltetrahydrophthalic anhydride and mixtures thereof.
  • the anhydride hardeners have proven to be particularly suitable.
  • the anhydride curing agents in combination with the glycidyl ester epoxy resins used according to the invention and the imidazole compounds, can lead to mechanically stable, crosslinked resins which additionally have improved electrical properties.
  • the composition may be substantially free of inorganic fillers.
  • inorganic fillers Surprisingly, it has been found that, in particular, compositions which are substantially free of further fillers have the improved electrical properties.
  • the total usable fillers were specified above.
  • the composition is essentially free of further fillers if it has less than 10% by weight, preferably less than 5% by weight, more preferably less than 2.5% by weight of fillers.
  • fillers may also be understood as meaning those substances which do not belong to the group of glycidyl ester epoxide resins, imidazole compounds and hardeners.
  • the analytical detection of the individual substances is known to the person skilled in the art.
  • a method for producing a cast resin insulator comprising the steps:
  • step d) pouring the degassed reaction mixture from step c) into a mold
  • the mixtures can be at temperatures of greater than or equal to 10 ° C. and less than or equal to 100 ° C., preferably greater than or equal to 20 ° C. and less than or equal to 80 ° C. and furthermore greater than or equal to 20 ° C and less than or equal to 60 ° C preheated. This can facilitate the addition of the imidazole compounds according to the invention and, if appropriate, further additives. Furthermore, the degassing of the mixture in
  • Step c) carried out under reduced pressure.
  • air bubbles in the cured glycidyl ester epoxy can be avoided, which can contribute to improved mechanical resistance of the insulator.
  • the hardening of the cast reaction mixture can take place in particular under elevated temperature for several hours.
  • the temperatures may be greater than or equal to 40 ° C and the curing be carried out for longer than 3 h. This can become mechanically very stable and fully reacted
  • the upper Surface roughness of the cured insulator to greater than or equal to 1 ⁇ and less than or equal to 40 ⁇ be set.
  • surface treatments can also be carried out by the improved electrical properties of the insulator according to the invention without the electrical properties of the insulator changing.
  • prior art isolators are more electrically conductive layers resulting from contaminants and byproducts of the crosslinking process. Removing these layers, for example, to form a defined surface roughness, this generally leads to deteriorated electrical properties.
  • the surface can be modified without losing the favorable electrical properties. This is because the insulator has a constant electrical conductivity.
  • Roughness range has proven to be particularly long-lasting to obtain particularly long service life. This is probably due to a particularly advantageous surface / volume relation.
  • the surface roughness can be adjusted by the methods known in the art. This, for example, by sanding, roughening, sandblasting, water jets, lasers, etc.
  • the surface roughness of the cured insulator can also be set to greater than or equal to 2 ⁇ and less than or equal to 20 ⁇ . This can contribute to improved penetration and / or rollover safety.
  • the curing of the reaction mixture in step e) at temperatures of greater than or equal to 50 ° C and less than or equal to 200 ° C take place.
  • a curing step in the above-mentioned temperature range can contribute to an advantageous mechanical and electrical aftertreatment of the material.
  • unreacted groups can react and a more even distribution of the individual components in the insulator can be achieved.
  • the post-treatment step may be longer than 10 hours, preferably longer than 15 hours, and furthermore preferably longer than 20 hours. This can lead to particularly mechanically stable insulators.
  • the temperature during curing can be constant or variable over the entire time span. Thus, for example, stepped temperature programs can be run.
  • the curing under rising temperature ramps in a temperature range of greater than or equal to 60 ° C and less than or equal to 180 ° C, further preferably greater than or equal to 75 ° C and less than or equal to 170 ° C.
  • an insulator which is produced by the process according to the invention.
  • the insulators produced by the process according to the invention can be distinguished by improved electrical properties, in particular improved breakdown and flashover safety. These improved electrical properties can be achieved while maintaining the mechanical properties. This can contribute to a longer service life of the insulators, which can have a prolonged life, especially with isolators in DC systems.
  • the invention further provides for the use of an insulator according to the invention in electrical switchgear.
  • the insulators according to the invention can preferably be used in electrical switchgear. This is particularly advantageous when several busbars of a system come together in a small space and there is an increased risk of over or breakdown. In these cases, the improved electrical properties of the insulator can contribute to improved plant safety and durability.
  • the insulator according to the invention can be used in electrical switchgear, wherein the switchgear is a high voltage system.
  • the insulator casting resin composition according to the invention can contribute to an improved reliability of high-voltage installations.
  • the insulator according to the invention in DC high-voltage systems can contribute to a service life extension.
  • Fig. La schematically a structure for the electrical charging of insulator surfaces
  • Fig. 1b schematically shows a structure for measuring the surface tension of an insulator
  • FIG. 3 shows the voltage drop at 40 ° C of a cast resin composition according to the invention with 2.4 parts of imidazole as a function of time
  • Fig. 4 shows the voltage drop at 20 ° C of a casting resin composition according to the invention with 1.2 parts of 1,2-dimethylimidazole as a function of time
  • Fig. 5 shows the voltage drop at 20 ° C of a casting resin composition according to the invention with 2.4 parts of 1,2-dimethylimidazole as a function of Time
  • FIG. 1 a shows a test setup for electrically charging sample body surfaces via a corona discharge.
  • an insulator specimen (5) which has a cylindrical geometry and is located on a table (4).
  • Above the specimen (5) is a grid (3).
  • a voltage generator (1) By means of a voltage generator (1), a charge difference is applied to the sample body (5) by means of a rod-shaped probe (2) which has a needle tip or a very thin wire at its tip.
  • the thickness of the specimen may usually be 2, 5 or 10 mm and the specimen diameter may be between 40 or 80 mm.
  • the surface is charged under atmospheric pressure in conditioned air (RH between 10% and 90%).
  • the maximum available surface tension on the specimen surface is 3 kV.
  • FIG. 1b shows the structure for determining the surface tension of a specimen. Shown is the (cylindrical) specimen (5), whose surface tension via a probe (7), which is connected to a voltmeter (6) is measured. Repeated measurements allow the surface tension degradation to be tracked over time. Examples:
  • a 4 mm high and 8 cm wide cylindrical specimen of 100 parts by weight of hexahydrophthalic acid diglycidyl ester and 102 parts by weight of methylnadic anhydride is prepared by preheating the methylnadic anhydride to 60 ° C. To this is added to 80 ° C preheated Glycidylesterharz. The mixture is degassed for 2 minutes under vacuum and with stirring, then the mixture is poured into molds heated to 80 ° C. The mixture is cured by means of a curing program (80 ° C 2h - 100 ° C for 2 h - 130 ° C for 1 h - 150 ° C for 12 h) and demolded after cooling.
  • a curing program 80 ° C 2h - 100 ° C for 2 h - 130 ° C for 1 h - 150 ° C for 12 h
  • the specimen is provided with a surface charge and the degradation of the surface charge is tracked over time (see Figure 2). Compared to specimens with a
  • Imidazole compound results in a significantly deteriorated degradation of the surface charge. Extrapolated to obtain a degradation of the surface charge after about 40,000 h, while in the compositions according to the invention with imidazole a much faster charge reduction is found (extrapolated about 150-170 h). In the isolator compositions according to the invention, about 90% charge degradation is obtained after about 50 hours.
  • the sample body is provided with a surface charge and the degradation of the surface charge is tracked over time (see FIG. 3). In comparison to specimen without
  • Glycidyl ester resin by dissolving the methylnadic anhydride and the 1,2-dimethylimidazole at 60 ° C with stirring. To this is added to 80 ° C preheated Glycidylesterharz. The mixture is degassed for 2 minutes under vacuum and with stirring, then the mixture is poured into molds heated to 80 ° C. The mixture is applied by means of a curing program (80 ° C 2h - 100 ° C 2 h - 130 ° C for 1 h - 150 ° C for 12 h) and cooled
  • the specimen is provided with a surface charge and the degradation of the surface charge is tracked over time (see Figure 4).
  • the degradation of the surface charge is tracked over time (see Figure 4).
  • Imidazol- component results in a significantly improved degradation of the surface charge.
  • alumina based on glycidyl ester resin
  • alumina prepared by the methylnadic anhydride and the 1, 2 -Dimethylimidazol are dissolved at 60 ° C with stirring.
  • 80 ° C preheated Glycidylesterharz To this is added to 80 ° C preheated Glycidylesterharz.
  • the mixture is degassed for 2 minutes under vacuum and with stirring, then the mixture is poured into molds heated to 80 ° C.
  • the mixture is cured by means of a curing program (80 ° C 2h - 100 ° C 2 h - 130 ° C for 1 h - 150 ° C for 12 h) and cooled after
  • the specimen is provided with a surface charge and the degradation of the surface charge is tracked over time (see Figure 5).
  • the degradation of the surface charge is tracked over time (see Figure 5).
  • Imidazol- component results in a significantly improved degradation of the surface charge.
  • the specimen is provided with a surface charge and the degradation of the surface charge is tracked over time (see Figure 6). In comparison to specimens without Imidazol- component results in a significantly improved degradation of the surface charge.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Organic Insulating Materials (AREA)

Abstract

La présente invention concerne une composition de résine coulable isolante qui comprend au moins un composant résine et un composant durcisseur. Le composant résine comprend au moins une résine époxyde à base d'ester de glycidyle et la composition comprend en plus au moins un composé imidazole.
PCT/EP2014/076202 2013-12-19 2014-12-02 Composition de résine coulable résistant aux décharges disruptives et au contournement WO2015090935A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201480068240.3A CN105829390A (zh) 2013-12-19 2014-12-02 抗击穿和飞弧的铸塑树脂组合物
EP14808930.3A EP3060595A1 (fr) 2013-12-19 2014-12-02 Composition de résine coulable résistant aux décharges disruptives et au contournement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013226705.3A DE102013226705A1 (de) 2013-12-19 2013-12-19 Durchschlag- und überschlagsichere Gießharzzusammensetzung
DE102013226705.3 2013-12-19

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Publication Number Publication Date
WO2015090935A1 true WO2015090935A1 (fr) 2015-06-25

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EP (1) EP3060595A1 (fr)
CN (1) CN105829390A (fr)
DE (1) DE102013226705A1 (fr)
WO (1) WO2015090935A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016203867A1 (de) * 2016-03-09 2017-09-14 Siemens Aktiengesellschaft Fester Isolationswerkstoff, Verwendung dazu und damit hergestelltes Isolationssystem
DE102016223662A1 (de) * 2016-11-29 2018-05-30 Siemens Aktiengesellschaft Vergussmasse, Isolationswerkstoff und Verwendung dazu

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000055254A1 (fr) * 1999-03-16 2000-09-21 Vantico Ag Composition durcissable avec combinaison particuliere de proprietes
DE102009053253A1 (de) 2009-11-09 2011-05-12 Siemens Aktiengesellschaft Tränkharz für Verbundisolatoren

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH524654A (de) * 1968-08-07 1972-06-30 Ciba Geigy Ag Neue, heisshärtbare Mischungen aus Polyepoxidverbindungen, Ringe enthaltenden Polyestern und Polycarbonsäureanhydriden
DE3326532A1 (de) * 1983-07-22 1985-01-31 Siemens AG, 1000 Berlin und 8000 München Verfahren zur herstellung von epoxidharzformstoffen
DE102009007392A1 (de) * 2009-01-29 2010-08-05 Siemens Aktiengesellschaft Tränkharzsystem für Isolierstoffe in Schaltanlagen
DE102009008464A1 (de) * 2009-02-10 2010-08-12 Siemens Aktiengesellschaft Gießharzsystem für Isolierstoffe in Schaltanlagen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000055254A1 (fr) * 1999-03-16 2000-09-21 Vantico Ag Composition durcissable avec combinaison particuliere de proprietes
DE102009053253A1 (de) 2009-11-09 2011-05-12 Siemens Aktiengesellschaft Tränkharz für Verbundisolatoren

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DE102013226705A1 (de) 2015-06-25
CN105829390A (zh) 2016-08-03

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