WO2012169372A1 - 低温特性に優れた電気絶縁油組成物 - Google Patents
低温特性に優れた電気絶縁油組成物 Download PDFInfo
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- WO2012169372A1 WO2012169372A1 PCT/JP2012/063445 JP2012063445W WO2012169372A1 WO 2012169372 A1 WO2012169372 A1 WO 2012169372A1 JP 2012063445 W JP2012063445 W JP 2012063445W WO 2012169372 A1 WO2012169372 A1 WO 2012169372A1
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- 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
- H01B3/20—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances liquids, e.g. oils
- H01B3/22—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances liquids, e.g. oils hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
- C10M105/02—Well-defined hydrocarbons
- C10M105/06—Well-defined hydrocarbons aromatic
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/20—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06
- H01G4/22—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06 impregnated
- H01G4/221—Dielectrics using combinations of dielectrics from more than one of groups H01G4/02 - H01G4/06 impregnated characterised by the composition of the impregnant
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/022—Electrolytes; Absorbents
- H01G9/035—Liquid electrolytes, e.g. impregnating materials
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/06—Well-defined aromatic compounds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/06—Well-defined aromatic compounds
- C10M2203/065—Well-defined aromatic compounds used as base material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
- C10M2207/046—Hydroxy ethers
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/02—Viscosity; Viscosity index
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/02—Pour-point; Viscosity index
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/40—Low content or no content compositions
- C10N2030/41—Chlorine free or low chlorine content compositions
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/14—Electric or magnetic purposes
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
- C10N2040/14—Electric or magnetic purposes
- C10N2040/16—Dielectric; Insulating oil or insulators
Definitions
- the present invention relates to an electrical insulating oil having a low temperature characteristic comprising a diarylalkane mixture.
- the performance mainly required as an electrical insulating oil excellent in low-temperature characteristics includes a high dielectric breakdown voltage, a high hydrogen gas absorbability, a low viscosity, and a low melting point.
- electric insulating oil having a high dielectric breakdown voltage is being used worldwide.
- electrical insulation oil is known to generate electrical discharges when solids are generated in the oil when used.
- Patent Document 1 Japanese Patent Laid-Open No. 7-226332
- an aromatic hydrocarbon oil having two condensed or non-condensed benzene rings having 14 to 16 carbon atoms and a natural fatty acid triglyceride having a freezing point of 5 ° C. or less are blended.
- this method improves the low temperature characteristics to some extent, the dielectric breakdown voltage of the aromatic hydrocarbon oil having two benzene rings is impaired because the dielectric breakdown voltage of natural fatty acid triglyceride is low.
- Benzyltoluene has a high ratio of aromatic carbon in the molecule, high hydrogen gas absorbency, and excellent withstand voltage characteristics, but the three positional isomers of benzyltoluene are o-form +6.6 according to the literature. It cannot be said that the melting point is as low as ° C., m-form ⁇ 27.8 ° C. and p-form + 4.6 ° C.
- Patent Document 2 Japanese Patent Laid-Open No. 60-87231
- benzyltoluene obtained by reacting toluene and benzyl chloride with an iron chloride catalyst is converted into a diproduct which is a co-product. It has been proposed to mix benzyltoluene.
- Patent Document 2 discloses an oligomer mixture of triarylmethane, but the substance is a mixture of benzyltoluene and dibenzyltoluene.
- adding a compound such as dibenzyltoluene is not a good idea for the following three reasons. That is, even if the freezing point depressing phenomenon is expected by adding dibenzyltoluene, the freezing point does not drop as much as the added weight because benzyltoluene has a high molecular weight.
- the freezing point lowering phenomenon is proportional to the molar concentration of the added substance, but in the case of about 20% by mass of dibenzyltoluene added to the product JARYLEC C-101, the decrease in the crystallization temperature is calculated from 6 to It is only about 8 ° C.
- dibenzyltoluene merely increases the viscosity of the insulating oil and decreases the mobility of the liquid molecules to apparently suppress the precipitation of crystals. Therefore, if it is carefully cooled, crystal precipitation is observed.
- dibenzyltoluene has a high bioaccumulation potential.
- international regulations have begun to be imposed on highly toxic substances by the Swiss Convention.
- dibenzyltoluene itself is not subject to this regulation, it is designated as a first-class monitoring chemical in Japan because of its high bioaccumulation potential.
- the use of the substance itself has been approved by limiting its intended use in the form of essential use, it is inevitable that regulations on highly toxic substances will be strengthened in the future, and there is a need for alternative substances with low toxicity. It has been.
- 1-phenyl-1-xylylethane or 1-phenyl-1-ethylphenylethane is easy to produce, and has excellent characteristics such as relatively high dielectric breakdown voltage and low dielectric loss. Widely used.
- 1-phenyl-1- (2,4-dimethylphenyl) ethane or 1-phenyl-1 is an electrically insulating oil composition having particularly excellent oxidation stability in addition to excellent dielectric breakdown voltage and dielectric loss.
- Patent Document 3 Japanese Patent Application Laid-Open No. 57-50708.
- an electrical insulating oil composition comprising 1-phenyl-1-xylylethane or 1-phenyl-1-ethylphenylethane has a pour point of ⁇ 47.5 ° C. or lower and a very low melting point, but has a viscosity at 40 ° C. there for high as about 5.0 mm 2 / s, in particular 0 °C capacitor insulation performance in a low temperature region below there is a problem that not enough.
- 1,1-diphenylethane has a high dielectric breakdown voltage and a high hydrogen gas absorbency, a viscosity at 40 ° C. of 2.8 mm 2 / s, and a freezing point as low as ⁇ 18 ° C. It is a promising substance. Although the freezing point of 1,1-diphenylethane is low, it cannot be used alone in a temperature range of -50 ° C. or lower.
- JP 7-226332 A JP 60-87231 A JP-A-57-50708
- An object of the present invention is to provide an electrical insulating oil composition having excellent low temperature characteristics, in which crystals are extremely difficult to precipitate, particularly at ⁇ 50 ° C., while maintaining a high breakdown voltage.
- the present invention includes [A] 1,1-diphenylethane in an amount of 30 to 70% by mass, and [B] (a) 1-phenyl-1-methylphenylethane, (b) 1-phenyl-1-xylylethane. (C) 1-phenyl 1-ethylphenylethane and (d) at least one component selected from 4 components of benzyltoluene in a total amount of 30 to 70% by mass, and [C] 1,2-diphenylethane An electrically insulating oil composition containing 0.1 to 2% by mass and / or 0.1 to 13% by mass of diphenylmethane.
- the present invention also includes [A] 1,1-diphenylethane in an amount of 30 to 70% by mass, and [B] (a) 1-phenyl-1-methylphenylethane, (b) 1-phenyl-1-xylylethane, and (C) 30 to 70% by mass in total of at least one component selected from three components of 1-phenyl 1-ethylphenylethane, and further 0.1 to 2% by mass of [C] 1,2-diphenylethane And / or an electrically insulating oil composition containing 0.1 to 13% by mass of diphenylmethane.
- the present invention also includes [A] 1,1-diphenylethane in an amount of 30 to 70% by mass, and [B] (a) 30 to 70% by mass of 1-phenyl-1-methylphenylethane, and [C] An electrical insulating oil composition containing 0.1 to 2% by mass of 1,2-diphenylethane and / or 0.1 to 13% by mass of diphenylmethane.
- the present invention also provides the above-described electrical insulating oil composition, wherein the kinematic viscosity at 40 ° C. is 4.5 mm 2 / s or less.
- the present invention is the above electrical insulating oil composition having a chlorine content of less than 50 ppm by mass.
- the present invention is also an electrical insulating oil composition characterized by adding 0.01 to 1.0% by mass of an epoxy compound after contacting activated clay with the electrical insulating oil composition.
- the electrical insulating oil composition of the present invention by blending a specific plurality of components at a specific ratio, crystals are extremely difficult to precipitate, and an oil immersion capacitor impregnated with the composition is practically at a low temperature of ⁇ 50 ° C. It is an electrical insulating oil composition excellent in low temperature characteristics and having the characteristics that it can be used. Furthermore, the bicyclic aromatic hydrocarbon blended as an electrical insulating oil composition is also excellent in hydrogen gas absorbability, withstand voltage characteristics, and the like. Moreover, each component of the electrical insulating oil composition of this invention does not have a bad influence with respect to a biological body. Therefore, it is an electrically insulating oil composition for impregnating capacitors that is practically extremely excellent.
- the electrical insulating oil composition of the present invention comprises [A] 1,1-diphenylethane, [B] 1-phenyl-1-methylphenylethane, 1-phenyl-1-xylylethane, 1-phenyl-1-ethylphenyl.
- a diarylalkane mixture in which at least one selected from ethane and benzyltoluene and [C] 1,2-diphenylethane and / or diphenylmethane is blended in a predetermined amount.
- benzyltoluene has high hydrogen gas absorption and low viscosity, its melting point is o-form + 6.6 ° C., m-form ⁇ 27.8 ° C. and p-form + 4.6 ° C. as described above, at ⁇ 50 ° C. It is not always sufficient for use.
- 1-phenyl-1-xylylethane and 1-phenyl-1-ethylphenylethane are basically obtained by aralkylation of styrene and C8 aromatic hydrocarbon, they are usually a mixture of both (for example, JP (See JP 47-29351, JP-A 53-135959, etc.). Since the pour point is ⁇ 47.5 ° C. as described above, crystals at low temperatures are difficult to precipitate, but because of the high viscosity, the insulation performance in the low temperature region of 0 ° C. or lower is not sufficient.
- JP See JP 47-29351, JP-A 53-135959, etc.
- the melting points of 1-phenyl-1-methylphenylethane are o-form + 39.5 ° C., m-form ⁇ 40 ° C. or less, and p-form ⁇ 12 ° C.
- 1-phenyl-1-methylphenylethane is produced from styrene and toluene using, for example, the zeolite catalyst described in Example 1 of JP-A No. 2003-119159, the production of o-form is around 1%. . Therefore, the melting point of the isomer mixture is considered to be low. Further, it is an electrical insulating oil that has high hydrogen gas absorbability and dielectric breakdown voltage, and is excellent in low-temperature characteristics.
- Diphenylmethane and 1,2-diphenylethane have low viscosity, high gas absorption, and high breakdown voltage, but have not been used so far because their melting points are + 25 ° C and + 51.2 ° C, respectively.
- at least one component selected from 1,1-diphenylethane, 1-phenyl-1-methylphenylethane, 1-phenyl-1-xylylethane, 1-phenyl-1-ethylphenylethane, and benzyltoluene It was found that by adding a predetermined amount of diphenylmethane or 1,2-diphenylethane in addition to the above, the dielectric breakdown voltage of the finished electrical insulating oil composition can be improved while suppressing crystal precipitation.
- the electrical insulating oil composition of the present invention contains 1,1-diphenylethane as component [A] in an amount of 30 to 70% by mass based on the total amount of the electrical insulating oil composition.
- component [A] 1,1-diphenylethane as component [A] in an amount of 30 to 70% by mass based on the total amount of the electrical insulating oil composition.
- the content of 1,1-diphenylethane is less than 30% by mass, the amount of the [B] component is relatively large, so that crystals are likely to precipitate.
- the content is more than 70% by mass, the amount of the [A] component is increased. May be easily deposited.
- the electrical insulating oil composition of the present invention comprises (a) 1-phenyl-1-methylphenylethane, (b) 1-phenyl-1-xylylethane, (c) 1-phenyl-1-ethylphenyl as component [B]. It contains at least one component selected from the four components of ethane and (d) benzyltoluene.
- the total content of (a) to (d) in the electrical insulating oil composition of the present invention is 30 to 70% by mass based on the total amount of the electrical insulating oil composition. If the content of the [B] component is less than 30% by mass, the amount of the [A] component is relatively increased, so that crystals are likely to be precipitated. It may be easy to do.
- the electrical insulating oil composition of the present invention contains 1,2-diphenylethane and / or diphenylmethane as the [C] component.
- the content when 1,2-diphenylethane is contained is 0.1 to 3% by mass, preferably 0.5% by mass, based on the total amount of the electrical insulating oil composition. Above, it is 2 mass% or less.
- the content when diphenylmethane is contained, is 0.1 to 13% by mass, preferably 0.5% by mass or more, based on the total amount of the electrical insulating oil composition. It is below mass%.
- 1,2-diphenylethane and / or diphenylmethane When the content of 1,2-diphenylethane and / or diphenylmethane is less than the lower limit, the effect of suppressing crystal precipitation at low temperatures is low, and when the upper limit is exceeded, 1,2-diphenylethane and diphenylmethane having a high melting point There is a possibility that crystals are likely to precipitate due to the influence.
- the kinematic viscosity at 40 ° C. is 2.1 mm 2 / s with diphenylmethane having the smallest molecular weight.
- the kinematic viscosity of the 1-phenyl-1-xylylethane and 1-phenyl-1-phenylethylethane mixture is about 5.0 mm 2 / s, but at ⁇ 50 ° C., the kinematic viscosity exceeds 2000 mm 2 / s. This makes it difficult to measure the breakdown voltage. That is, a mixture of 1-phenyl-1-xylylethane and 1-phenyl-1-phenylethylethane does not precipitate a crystalline substance at ⁇ 50 ° C., but cannot be used under these conditions. Therefore, the kinematic viscosity at 40 ° C.
- kinematic viscosity at 40 ° C. and the kinematic viscosity at ⁇ 50 ° C. differ depending on the viscosity index of the compound. However, if the diarylalkane is used, there is no significant difference between the compounds.
- the electrical insulating oil contains a considerable amount of chlorine, but the chlorine content has been found to deteriorate the performance of the insulating oil.
- the chlorine content in the electrical insulating oil is preferably less than 50 ppm by mass, more preferably 10 ppm by mass or less.
- the performance of the electrical insulating oil increases due to the inclusion of water and polar substances. However, if the dielectric tangent is high, the insulating property decreases, so the performance as an electrical insulating oil deteriorates. In order to avoid these problems, contact with activated clay and removal of these will reduce the dielectric loss tangent and improve the performance.
- the activated clay used is not particularly limited.
- the shape of the activated clay is not particularly limited, but a molded body is preferable from a practical viewpoint. Since the chlorine content cannot always be removed with activated clay, an epoxy compound is added as a hydrogen chloride trapping agent. Since this epoxy compound is removed to some extent by bringing it into contact with activated clay, it is desirable to add the epoxy compound after the electrical insulating oil has been treated with the clay.
- the epoxy compound examples include alicyclic epoxy compounds such as 3,4-epoxycyclohexylmethyl (3,4-epoxycyclohexane) carboxylate, vinylcyclohexylene epoxide, 3,4-epoxy-6-methylcyclohexylmethyl (3,4 Examples thereof include 4-epoxy-6-methylhexane) carboxylate, a phenol novolac type epoxy compound that is a diglycidyl ether type epoxy compound of bisphenol A, and an orthocresol novolak type epoxy compound.
- the addition amount is 0.01 to 1.0% by mass, preferably 0.3 to 0.8% by mass, based on the total amount of the electrical insulating oil composition. If the added amount is less than 0.01% by mass, there is no effect of dispersing the discharge energy. Hurt. In addition, when the epoxy compound is added and then brought into contact with the clay treatment, it is difficult to obtain the effect as much as it is added.
- the electrical insulating oil composition of the present invention is useful as impregnating oil for oil-impregnated electrical equipment, particularly as capacitor oil. Among them, it is suitable for impregnating an oil-immersed electrical device, preferably an oil-impregnated capacitor, using a plastic film as at least a part of an insulating material or dielectric material.
- polyester film polyvinylidene fluoride and the like, as well as polyolefin film such as polypropylene and polyethylene, etc. can be used.
- polyolefin film is preferable.
- a particularly suitable polyolefin film is a polypropylene film.
- a suitable oil-impregnated capacitor of the present invention is obtained by winding a metal foil such as aluminum as a conductor and a plastic film as the insulating material or dielectric material together with other materials such as insulating paper as necessary. It is manufactured by impregnating with insulating oil.
- a suitable oil-impregnated capacitor of the present invention requires a metallized plastic film in which a metal layer as a conductor such as aluminum or zinc is formed on the plastic film as the insulating material or dielectric material by a method such as vapor deposition. Accordingly, the oil-immersed capacitor is also manufactured by winding together with a plastic film or insulating paper and impregnating by a conventional method.
- Example 1 Experiments A and B described below were conducted using a mixed oil prepared to 67 mass% 1,1-diphenylethane, 30 mass% benzyltoluene, 2 mass% 1,2-diphenylethane, and 1 mass% diphenylmethane. . The results are shown in Table 1.
- benzyltoluene an isomer mixture consisting of 4% by mass of o-isomer, 59% by mass of m-isomer and 37% by mass of p-isomer was prepared according to the reference production example of Japanese Patent Publication No. 8-8008.
- Example 2 A mixed oil prepared by 69% by mass of 1,1-diphenylethane, 24% by mass of 1-phenyl-1-xylylethane, 6% by mass of 1-phenyl-1-phenylethylethane and 1% by mass of 1,2-diphenylethane was used. Experiments A and B described later were conducted. The results are shown in Table 1.
- Example 3 Using a mixed oil prepared such that 54% by mass of 1,1-diphenylethane, 36% by mass of 1-phenyl-1-xylylethane, 9% by mass of 1-phenyl-1-phenylethylethane, and 1% by mass of 1,2-diphenylethane Experiments A and B described later were conducted. The results are shown in Table 1.
- Example 4 Using a mixed oil prepared in 67% by mass of 1,1-diphenylethane, 30% by mass of 1-phenyl-1-methylphenylethane, 1% by mass of diphenylmethane, and 2% by mass of 1,2-diphenylethane, Example A to be described later The experiment was conducted. The results are shown in Table 1.
- 1-phenyl-1-methylphenylethane was produced by changing the raw material cumene of Example 1 of JP-A-2003-119159 to toluene and changing the reaction temperature to 200 ° C. An isomer mixture consisting of 11% by mass of isomer and 88% by mass of p-isomer was used.
- Example 5 Experimental examples to be described later using a mixed oil prepared by 60% by mass of 1,1-diphenylethane, 24% by mass of 1-phenyl-1-xylylethane, 6% by mass of 1-phenyl-1-phenylethylethane and 10% by mass of diphenylmethane Experiment A was performed. The results are shown in Table 1.
- Example 6 Experiment A described later was conducted using a mixed oil prepared with 59% by mass of 1,1-diphenylethane, 32% by mass of 1-phenyl-1-methylphenylethane, and 9% by mass of diphenylmethane. The results are shown in Table 1. The same 1-phenyl-1-methylphenylethane as that used in Example 4 was used.
- Example 7 Experiment A described later was conducted using a mixed oil prepared to 30% by mass of 1,1-diphenylethane, 69% by mass of 1-phenyl-1-methylphenylethane, and 1% by mass of 1,2-diphenylethane. . The results are shown in Table 1. The same 1-phenyl-1-methylphenylethane as that used in Example 4 was used.
- Example 8 Using a mixed oil prepared by 58% by mass of 1,1-diphenylethane, 39% by mass of 1-phenyl-1-methylphenylethane, 2% by mass of 1,2-diphenylethane and 1% by mass of diphenylmethane, Experimental Example A described later , B was conducted. The results are shown in Table 1. The same 1-phenyl-1-methylphenylethane as that used in Example 4 was used.
- Example 9 Using a mixed oil prepared in 49% by mass of 1,1-diphenylethane, 49% by mass of 1-phenyl-1-methylphenylethane, 1% by mass of 1,2-diphenylethane and 1% by mass of diphenylmethane, Experimental Example A described later , B was conducted. The results are shown in Table 1. The same 1-phenyl-1-methylphenylethane as that used in Example 4 was used.
- Example 10 Using a mixed oil prepared in 49% by mass of 1,1-diphenylethane, 49% by mass of 1-phenyl-1-methylphenylethane, 1% by mass of 1,2-diphenylethane and 1% by mass of diphenylmethane, Experimental Example A described later , B was conducted. The results are shown in Table 1.
- 1-phenyl-1-methylphenylethane was produced by changing the raw material cumene of Example 1 of JP-A-2003-119159 to toluene and changing the reaction temperature to 260 ° C. An isomer mixture consisting of 52% by mass of isomer and 47% by mass of p-isomer was used.
- Example 12 Experiments A and B described below were conducted using a mixed oil prepared by 58% by mass of 1,1-diphenylethane, 39% by mass of benzyltoluene, 2% by mass of 1,2-diphenylethane, and 1% by mass of diphenylmethane. . The results are shown in Table 1. The same benzyltoluene as in Example 1 was used.
- Example 13 Experiments A and B described below were conducted using a mixed oil prepared by 39% by mass of 1,1-diphenylethane, 59% by mass of benzyltoluene, 1% by mass of 1,2-diphenylethane, and 1% by mass of diphenylmethane. . The results are shown in Table 1. The same benzyltoluene as in Example 1 was used.
- Example 14 Experiment A, which will be described later, was conducted using a mixed oil prepared to 57% by mass of 1,1-diphenylethane, 30% by mass of benzyltoluene, and 13% by mass of diphenylmethane. The results are shown in Table 1. The same benzyltoluene as in Example 1 was used.
- Example 15 Experiments A and B described later were conducted using a mixed oil prepared such that 54% by mass of 1,1-diphenylethane, 36% by mass of 1-phenyl-1-methylphenylethane, and 10% by mass of diphenylmethane. The results are shown in Table 1. The same 1-phenyl-1-methylphenylethane as that used in Example 4 was used.
- Example 16 Using mixed oil prepared to 69.8% by mass of 1,1-diphenylethane, 30% by mass of 1-phenyl-1-methylphenylethane, 0.1% by mass of diphenylmethane, and 0.1% by mass of 1,2-diphenylethane The experiment of Experimental Example A described later was performed. The results are shown in Table 1. The same 1-phenyl-1-methylphenylethane as that used in Example 4 was used.
- Example 6 (Comparative Example 6) The following experiment was conducted using a mixed oil prepared with 80% by mass of 1,1-diphenylethane, 8% by mass of 1-phenyl-1-xylylethane, 2% by mass of 1-phenyl-1-phenylethylethane, and 10% by mass of benzyltoluene. The experiment of Example A was conducted. The results are shown in Table 1. The same benzyltoluene as in Example 1 was used.
- ⁇ Experiment B> Evaluation as an electrically insulating oil composition using a model capacitor
- the capacitors used in the experiment are as follows.
- As the solid insulator an easy impregnation type of a simultaneous biaxially stretched polypropylene film manufactured by Shin-Etsu Film Co., Ltd. manufactured by a tubular method was used. Two pieces with a thickness of 14 ⁇ m (micrometer method) are used, and this is wound with an aluminum foil electrode to make an element with a capacitance of 0.3 to 0.4 ⁇ F, and this is put into a tin can. It was.
- the can has a flexible structure so that it can sufficiently cope with the insulation oil contracted at low temperature. Moreover, the edge part of the electrode was not bent while being slit.
- the can-type capacitor thus prepared was vacuum-dried according to a conventional method, then impregnated with insulating oil under the same vacuum, and sealed. Next, in order to make the impregnation constant and stabilized, heat treatment was performed at a maximum temperature of 80 ° C. for 2 days. This was allowed to stand at room temperature for 5 days or more, and then subjected to an electric charge treatment for 16 hours in a constant temperature bath at 30 ° C. at AC 1400 V (corresponding to 50 V / ⁇ ) and then subjected to an experiment.
- a model capacitor for oil impregnation was produced by using two layers of 14 ⁇ m thick polypropylene films as dielectrics and winding and laminating aluminum foils as electrodes according to a conventional method.
- each electrically insulating oil composition was used after being treated with activated clay. That is, 3% by mass of NSR clay manufactured by Mizusawa Chemical Industry Co., Ltd. was added to the electrical insulating oil composition, stirred at a liquid temperature of 25 ° C. for 30 minutes, and then filtered. After filtration, 0.65% by mass of an epoxy compound (alicyclic epoxide; trade name: Celoxide 2021P, manufactured by Daicel Chemical Industries, Ltd.) was added as a chlorine scavenger and used for impregnation.
- an epoxy compound alicyclic epoxide; trade name: Celoxide 2021P, manufactured by Daicel Chemical Industries, Ltd.
- a dielectric breakdown voltage was determined by the following formula (1) from the voltage and time at which the capacitor caused dielectric breakdown.
- the predetermined power application method is a method of continuously increasing the applied voltage at a rate of 10 v / ⁇ m every 24 hours from a potential gradient of 50 v / ⁇ m.
- Dielectric breakdown voltage (v / ⁇ m) V + S ⁇ (T / 1440) (1)
- V Voltage applied at dielectric breakdown (v / ⁇ m) S: Rise voltage every 24 hours (v / ⁇ m)
- T Elapsed time (minutes) from when the applied voltage increases until dielectric breakdown
- 1,1-DPE is 1,1-diphenylethane
- PTE is 1-phenyl-1-methylphenylethane
- PXE is 1-phenyl-1-xylylethane
- PEPE is 1-phenyl-1-phenylethylethane
- BT is benzyltoluene
- 1,2-DPE is 1,2-diphenylethane
- DPM is diphenylmethane
- DBT dibenzyltoluene.
- the electrical insulating oil composition of the present invention is excellent in low temperature characteristics and extremely useful in industry.
Abstract
Description
2つ目の理由は、ジベンジルトルエンは単に絶縁油の粘度を上昇させ、液分子の易動度を低下させて見掛け上結晶の析出を抑制しているに過ぎない。それ故、注意深く冷却すれば結晶の析出が見られるのである。
3つ目の理由は、ジベンジルトルエンが高い生物蓄積性を有することにある。近年、ストックホルム条約等によって、高毒性を有する物質については国際的な規制がかかり始めている。ジベンジルトルエン自体は当該規制にかかっていないものの、日本国内においては、生物蓄積性が高いことから第一種監視化学物質に指定されている。当該物質の使用自体はエッセンシャルユースという形態で使用用途を限定することで使用が認められているものの、今後、高毒性の物質への規制が強まることは必至であり、低毒性な代替物質が求められている。
本発明の電気絶縁油組成物は、[A]1,1-ジフェニルエタンに、[B]1-フェニル-1-メチルフェニルエタン、1-フェニル-1-キシリルエタン、1-フェニル-1-エチルフェニルエタン、およびベンジルトルエンから選ばれる少なくとも1種以上、かつ[C]1,2-ジフェニルエタンおよび/またはジフェニルメタンを所定量配合したジアリールアルカン混合物である。
本発明の電気絶縁油組成物における(a)~(d)の合計の含有量は、電気絶縁油組成物全量基準で30~70質量%である。[B]成分の含有量が30質量%より少ないと相対的に[A]成分が多くなるため結晶が析出しやすくなり、70質量%より多いと[B]成分が多くなる影響で結晶が析出しやすくなるおそれがある。
本発明の電気絶縁油組成物において、1,2-ジフェニルエタンを含有する場合の含有量は、電気絶縁油組成物全量基準で0.1~3質量%であり、好ましくは0.5質量%以上、2質量%以下である。また、本発明の電気絶縁油組成物において、ジフェニルメタンを含有する場合の含有量は、電気絶縁油組成物全量基準で0.1~13質量%であり、好ましくは0.5質量%以上、10質量%以下である。1,2-ジフェニルエタンおよび/またはジフェニルメタンの含有量が上記下限値に満たない場合は低温における結晶析出の抑制効果が低く、上記上限値を超えると融点の高い1,2-ジフェニルエタン、ジフェニルメタンの影響により結晶が析出しやすくなるおそれがある。
1,1-ジフェニルエタン67質量%、ベンジルトルエン30質量%、1,2-ジフェニルエタン2質量%、ジフェニルメタン1質量%に調製した混合油を用い、後述の実験例A、Bの実験を行った。結果を表1に示す。
なお、ベンジルトルエンは、特公平8-8008号公報の参考製造例に従って製造したo-体4質量%、m-体59質量%およびp-体37質量%からなる異性体混合物を用いた。
1,1-ジフェニルエタン69質量%、1-フェニル-1-キシリルエタン24質量%、1-フェニル-1-フェニルエチルエタン6質量%、1,2-ジフェニルエタン1質量%に調製した混合油を用い、後述の実験例A、Bの実験を行った。結果を表1に示す。
1,1-ジフェニルエタン54質量%、1-フェニル-1-キシリルエタン36質量%、1-フェニル-1-フェニルエチルエタン9質量%、1,2-ジフェニルエタン1質量%に調製した混合油を用い、後述の実験例A、Bの実験を行った。結果を表1に示す。
1,1-ジフェニルエタン67質量%、1-フェニル-1-メチルフェニルエタン30質量%、ジフェニルメタン1質量%、1,2-ジフェニルエタン2質量%に調製した混合油を用い、後述の実験例Aの実験を行った。結果を表1に示す。
なお、1-フェニル-1-メチルフェニルエタンは、特開平2003-119159号公報の実施例1の原料のクメンをトルエンに、反応温度を200℃に変えて製造したo-体1質量%、m-体11質量%およびp-体88質量%からなる異性体混合物を用いた。
1,1-ジフェニルエタン60質量%、1-フェニル-1-キシリルエタン24質量%、1-フェニル-1-フェニルエチルエタン6質量%、ジフェニルメタン10質量%に調製した混合油を用い、後述の実験例Aの実験を行った。結果を表1に示す。
1,1-ジフェニルエタン59質量%、1-フェニル-1-メチルフェニルエタン32質量%、ジフェニルメタン9質量%に調製した混合油を用い、後述の実験例Aの実験を行った。結果を表1に示す。なお、1-フェニル-1-メチルフェニルエタンは実施例4と同じものを用いた。
1,1-ジフェニルエタン30質量%、1-フェニル-1-メチルフェニルエタン69質量%、1,2-ジフェニルエタン1質量%に調製した混合油を用い、後述の実験例Aの実験を行った。結果を表1に示す。なお、1-フェニル-1-メチルフェニルエタンは実施例4と同じものを用いた。
1,1-ジフェニルエタン58質量%、1-フェニル-1-メチルフェニルエタン39質量%、1,2-ジフェニルエタン2質量%、ジフェニルメタン1質量%に調製した混合油を用い、後述の実験例A、Bの実験を行った。結果を表1に示す。なお、1-フェニル-1-メチルフェニルエタンは実施例4と同じものを用いた。
1,1-ジフェニルエタン49質量%、1-フェニル-1-メチルフェニルエタン49質量%、1,2-ジフェニルエタン1質量%、ジフェニルメタン1質量%に調製した混合油を用い、後述の実験例A、Bの実験を行った。結果を表1に示す。なお、1-フェニル-1-メチルフェニルエタンは実施例4と同じものを用いた。
1,1-ジフェニルエタン49質量%、1-フェニル-1-メチルフェニルエタン49質量%、1,2-ジフェニルエタン1質量%、ジフェニルメタン1質量%に調製した混合油を用い、後述の実験例A、Bの実験を行った。結果を表1に示す。
なお、1-フェニル-1-メチルフェニルエタンは、特開平2003-119159号公報の実施例1の原料のクメンをトルエンに、反応温度を260℃に変えて製造したo-体1質量%、m-体52質量%およびp-体47質量%からなる異性体混合物を用いた。
1,1-ジフェニルエタン58質量%、ベンジルトルエン39質量%、1,2-ジフェニルエタン2質量%、ジフェニルメタン1質量%に調製した混合油を用い、後述の実験例A、Bの実験を行った。結果を表1に示す。
なお、ベンジルトルエンは、特開昭60-87231号公報記載の方法で製造したo-体49質量%、m-体7質量%およびp-体44質量%からなる異性体混合物を用いた。
1,1-ジフェニルエタン58質量%、ベンジルトルエン39質量%、1,2-ジフェニルエタン2質量%、ジフェニルメタン1質量%に調製した混合油を用い、後述の実験例A、Bの実験を行った。結果を表1に示す。なお、ベンジルトルエンは実施例1と同じものを用いた。
1,1-ジフェニルエタン39質量%、ベンジルトルエン59質量%、1,2-ジフェニルエタン1質量%、ジフェニルメタン1質量%に調製した混合油を用い、後述の実験例A、Bの実験を行った。結果を表1に示す。なお、ベンジルトルエンは実施例1と同じものを用いた。
1,1-ジフェニルエタン57質量%、ベンジルトルエン30質量%、ジフェニルメタン13質量%に調製した混合油を用い、後述の実験例Aの実験を行った。結果を表1に示す。なお、ベンジルトルエンは実施例1と同じものを用いた。
1,1-ジフェニルエタン54質量%、1-フェニル-1-メチルフェニルエタン36質量%、ジフェニルメタン10質量%に調製した混合油を用い、後述の実験例A、Bの実験を行った。結果を表1に示す。なお、1-フェニル-1-メチルフェニルエタンは実施例4と同じものを用いた。
1,1-ジフェニルエタン69.8質量%、1-フェニル-1-メチルフェニルエタン30質量%、ジフェニルメタン0.1質量%、1,2-ジフェニルエタン0.1質量%に調製した混合油を用い、後述の実験例Aの実験を行った。結果を表1に示す。なお、1-フェニル-1-メチルフェニルエタンは実施例4と同じものを用いた。
1,1-ジフェニルエタン70質量%、1-フェニル-1-メチルフェニルエタン30質量%に調製した混合油を用い、後述の実験例Aの実験を行った。結果を表1に示す。なお、1-フェニル-1-メチルフェニルエタンは実施例4と同じものを用いた。
1,1-ジフェニルエタン70質量%、ベンジルトルエン30質量%に調製した混合油を用い、後述の実験例A、Bの実験を行った。結果を表1に示す。なお、ベンジルトルエンは実施例1と同じものを用いた。
実験例Aの1030時間では、結晶が析出したが、実験例Bでは測定終了まで200時間程度であったため、絶縁破壊電圧を測定することができた。
1-フェニル-1-キシリルエタン80質量%、1-フェニル-1-フェニルエチルエタン20質量%に調製した混合油を用い、後述の実験例A、Bの実験を行った。結果を表1に示す。
1,1-ジフェニルエタンを用い、後述の実験例A、Bの実験を行った。結果を表1に示す。
1,1-ジフェニルエタン20質量%、ベンジルトルエン80質量%に調製した混合油を用い、後述の実験例Aの実験を行った。結果を表1に示す。ベンジルトルエンは実施例1と同じものを用いた。
1,1-ジフェニルエタン80質量%、1-フェニル-1-キシリルエタン8質量%、1-フェニル-1-フェニルエチルエタン2質量%、ベンジルトルエン10質量%に調製した混合油を用い、後述の実験例Aの実験を行った。結果を表1に示す。なお、ベンジルトルエンは実施例1と同じものを用いた。
ベンジルトルエン80質量%、ジベンジルトルエン20質量%に調製した混合油を用い、後述の実験例A、Bの実験を行った。結果を表1に示す。
実験例Aの1030時間では、結晶が析出したが、実験例Bでは測定終了まで200時間程度であったため、絶縁破壊電圧を測定することができた。
1,1-ジフェニルエタン20質量%、1-フェニル-1-メチルフェニルエタン80質量%に調製した混合油を用い、後述の実験例Aの実験を行った。結果を表1に示す。なお、1-フェニル-1-メチルフェニルエタンは実施例4と同じものを用いた。
1,1-ジフェニルエタン20質量%、1-フェニル-1-キシリルエタン64質量%、1-フェニル-1-フェニルエチルエタン16質量%に調製した混合油を用い、後述の実験例Aの実験を行った。結果を表1に示す。
1,1-ジフェニルエタン30質量%、1-フェニル-1-キシリルエタン56質量%、1-フェニル-1-フェニルエチルエタン14質量%に調製した混合油を用い、後述の実験例Aの実験を行った。結果を表1に示す。
1,1-ジフェニルエタンに塩素化合物として塩化ジフェニルメタンを50質量ppm添加した油を用い、後述の実験例A、Bの実験を行った。結果を表1に示す。
1,1-ジフェニルエタン67質量%、ベンジルトルエン30質量%、1,2-ジフェニルエタン3質量%に調製した混合油を用い、後述の実験例Aの実験を行った。結果を表1に示す。なお、ベンジルトルエンは実施例1と同じものを用いた。
1,1-ジフェニルエタン55質量%、ベンジルトルエン30質量%、ジフェニルメタン15質量%に調製した混合油を用い、後述の実験例Aの実験を行った。結果を表1に示す。なお、ベンジルトルエンは実施例1と同じものを用いた。
結晶析出と温度の関係コンデンサの性能を維持するためには、最低許容温度の-50℃まで絶縁油組成物が結晶を析出しないことが望まれる。絶縁油組成物の結晶析出を確認するために、実施例1~16、比較例1~13のそれぞれの油を100mlのサンプル瓶に入れ、低温恒温槽内に静置し、その温度を1030時間保ち、結晶の析出を目視によって観察した。結果を表1に示す。表において、「○」とは液に透明性があり結晶の析出が見られない状態、「×」とは透明性がなく一部に結晶析出が見られるが流動している状態、または結晶が析出し全体が固化した状態をそれぞれ示す。-50℃以下でも固化しない本発明の絶縁油組成物はコンデンサの性能を最低許容温度まで維持できるものである。
実験に用いたコンデンサは次の通りである。固体絶縁体としてはチューブラー法で作られた信越フィルム(株)製の同時二軸延伸ポリプロピレンフィルムの易含浸タイプを用いた。
厚さ14μm(マイクロメーター法)のものを2枚使用し、これをアルミ箔電極と共に巻回して、静電容量が0.3から0.4μFの素子を作り、これをブリキ製の缶に入れた。缶は絶縁体油が低温で収縮したときに充分に対応できるように柔軟な構造にした。また、電極の端部はスリットしたままで折り曲げてないものとした。
このようにして準備された缶型のコンデンサを、常法に従って真空乾燥した後、同じ真空下で絶縁油を含浸し、封口した。次に含浸を一定にし安定化するために、最高80℃の温度2昼夜熱処理を施した。これを室温で5日間以上放置した後、AC1400V(50V/μに相当)にて30℃の恒温槽で16時間課電処理をした後に実験に供した。
誘電体として厚み14μmのポリプロピレンフィルムを2枚重ねたものを使用し、電極として、アルミニウム箔を常法に従って、巻回、積層することにより、油含浸用のモデルコンデンサを作成した。
このコンデンサに、真空下で各混合油を含浸させて、静電容量0.26μFの油含浸コンデンサを作成した。なお、含浸にあたっては各電気絶縁油組成物を予め活性白土で処理して用いた。すなわち水沢化学工業(株)製NSR白土を電気絶縁油組成物に3質量%添加し、液温25℃で30分間撹拌し、その後濾過した。濾過後塩素捕獲剤としてエポキシ化合物(脂環式エポキシド;商品名:セロキサイド2021P、ダイセル化学工業(株)製)を0.65質量%添加して含浸用に用いた。
次に、これら油含浸コンデンサを所定の温度下で所定の方法で交流電圧を課電して、コンデンサが絶縁破壊を起こした電圧と時間から下記式(1)により絶縁破壊電圧を求めた。なお所定の課電方法とは、電位傾度50v/μmから、24時間毎に10v/μmの割合で連続的に課電電圧を上昇させる方法である。
絶縁破壊電圧(v/μm)=V+S×(T/1440) (1)
ここで V:絶縁破壊時の課電電圧(v/μm)
S:24時間毎の上昇電圧(v/μm)
T:課電電圧上昇後、絶縁破壊までの経過時間(分)
Claims (6)
- [A]1,1-ジフェニルエタンを30~70質量%含み、かつ[B](a)1-フェニル-1-メチルフェニルエタン、(b)1-フェニル-1-キシリルエタン、(c)1-フェニル1-エチルフェニルエタンおよび(d)ベンジルトルエンの4成分から選ばれた少なくとも1成分以上を合計で30~70質量%含み、さらに[C]1,2-ジフェニルエタンを0.1~2質量%および/またはジフェニルメタンを0.1~13質量%含む電気絶縁油組成物。
- [A]1,1-ジフェニルエタンを30~70質量%含み、かつ[B](a)1-フェニル-1-メチルフェニルエタン、(b)1-フェニル-1-キシリルエタンおよび(c)1-フェニル1-エチルフェニルエタンの3成分から選ばれた少なくとも1成分以上を合計で30~70質量%含み、さらに[C]1,2-ジフェニルエタンを0.1~2質量%および/またはジフェニルメタンを0.1~13質量%含む電気絶縁油組成物。
- [A]1,1-ジフェニルエタンを30~70質量%含み、かつ[B](a)1-フェニル-1-メチルフェニルエタンを30~70質量%含み、さらに[C]1,2-ジフェニルエタンを0.1~2質量%および/またはジフェニルメタンを0.1~13質量%含む電気絶縁油組成物。
- 40℃における動粘度が4.5mm2/s以下であることを特徴とする請求項1~3のいずれかに記載の電気絶縁油組成物。
- 塩素の含有量が50質量ppm未満であることを特徴とする請求項1~4のいずれかに記載の電気絶縁油組成物。
- 請求項1~5のいずれかに記載の電気絶縁油組成物に活性白土を接触させた後に、エポキシ化合物を0.01~1.0質量%添加することを特徴とする電気絶縁油組成物。
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EP12797115.8A EP2720232A4 (en) | 2011-06-07 | 2012-05-25 | ELECTRICALLY INSULATING OIL COMPOSITION WITH EXCELLENT TEMPERATURE TEMPERATURE PROPERTIES |
US14/123,970 US20140110643A1 (en) | 2011-06-07 | 2012-05-25 | Electrical insulating oil composition having excellent low temperature properties |
BR112013031446A BR112013031446A2 (pt) | 2011-06-07 | 2012-05-25 | composição de óleo para isolamento elétrico que possui excelentes propriedades em baixa temperatura |
CN201280027249.0A CN103582920A (zh) | 2011-06-07 | 2012-05-25 | 低温特性优良的电绝缘油组合物 |
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JP2011127597A JP5814637B2 (ja) | 2011-06-07 | 2011-06-07 | 低温特性に優れた電気絶縁油組成物 |
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EP (1) | EP2720232A4 (ja) |
JP (1) | JP5814637B2 (ja) |
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WO2015122830A1 (en) * | 2014-02-11 | 2015-08-20 | Nynas Ab (Publ) | Use of certain aromatic compounds as additives to a dielectric liquid for re-ducing the viscosity thereof |
CN105378024A (zh) * | 2013-07-19 | 2016-03-02 | 阿肯马法国公司 | 介电或载热流体组合物和它们的用途 |
CN105531772A (zh) * | 2013-09-12 | 2016-04-27 | 吉坤日矿日石能源株式会社 | 电绝缘油组合物和油浸电设备 |
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WO2013115372A1 (ja) * | 2012-02-03 | 2013-08-08 | Jx日鉱日石エネルギー株式会社 | 広い温度領域での性能に優れた電気絶縁油組成物 |
JP2013196913A (ja) * | 2012-03-21 | 2013-09-30 | Jx Nippon Oil & Energy Corp | 電気絶縁油組成物 |
US9567508B2 (en) | 2015-01-05 | 2017-02-14 | Halliburton Energy Services, Inc. | Dry drilling fluid additives and methods relating thereto |
WO2016174034A1 (en) * | 2015-04-28 | 2016-11-03 | Borealis Ag | Polypropylene film structure |
CN104911000B (zh) * | 2015-05-25 | 2019-02-19 | 吉首大学 | 电容器用绝缘油及其制作方法 |
KR101641157B1 (ko) | 2016-03-18 | 2016-07-20 | 주식회사 한유에너지 | 유입식 변압기용 전기절연유 조성물 |
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JP6454395B2 (ja) * | 2017-11-06 | 2019-01-16 | Jxtgエネルギー株式会社 | 電気絶縁油組成物及び油含浸電気機器 |
CN109439290B (zh) * | 2018-12-05 | 2021-03-16 | 山东恒利热载体工程技术有限公司 | 一种环保有机热载体及其制备方法 |
FR3101477B1 (fr) | 2019-10-01 | 2021-09-24 | Arkema France | Augmentation de la puissance d’un transformateur |
FR3101476B1 (fr) | 2019-10-01 | 2021-09-24 | Arkema France | Fluide diélectrique pour rétrofilling de transformateur |
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CN105378024A (zh) * | 2013-07-19 | 2016-03-02 | 阿肯马法国公司 | 介电或载热流体组合物和它们的用途 |
CN105531772A (zh) * | 2013-09-12 | 2016-04-27 | 吉坤日矿日石能源株式会社 | 电绝缘油组合物和油浸电设备 |
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WO2015122830A1 (en) * | 2014-02-11 | 2015-08-20 | Nynas Ab (Publ) | Use of certain aromatic compounds as additives to a dielectric liquid for re-ducing the viscosity thereof |
Also Published As
Publication number | Publication date |
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EP2720232A1 (en) | 2014-04-16 |
CN103582920A (zh) | 2014-02-12 |
JP2012256449A (ja) | 2012-12-27 |
EP2720232A4 (en) | 2014-12-10 |
JP5814637B2 (ja) | 2015-11-17 |
BR112013031446A2 (pt) | 2016-12-06 |
US20140110643A1 (en) | 2014-04-24 |
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