144results about "Liquid organic insulators" patented technology

Provided is an insulated wire provided with a conductor and a coating layer formed around the conductor, the coating layer being provided with: a fluororesin layer containing a melt-processable fluororesin; and a PAEK resin layer formed around the fluororesin layer and containing a polyaryletherketone (PAEK) resin, the coating layer having a thickness of 40 [mu] m to 300 [mu] m.

The invention discloses a bisphenol amine antioxidant as well as a preparation method and application thereof, and relates to the field of antioxidants. The chemical structural formula of the antioxidant is # imgabs0. The preparation method comprises the following steps: heating alkylated 1, 2-benzenediol and a formaldehyde aqueous solution for reaction to produce an intermediate; and then carrying out condensation reaction with p-phenylenediamine to synthesize the bisphenol amine type antioxidant. Phenol and amine groups are introduced into the molecular structure of the bisphenol amine antioxidant, the phenol group provides strong free radical capturing ability, the amine group promotes the antioxidant process through hydrogen supply, and the bisphenol amine antioxidant can play a stable antioxidant effect at a high temperature. The antioxidant can effectively capture free radicals generated in the oxidation process in natural ester insulating oil, inhibits the oxidation reaction of oil products, has antioxidant stability at high temperature, effectively prolongs the service life of the oil products, and has significant industrial application potential and market prospects.

The application discloses a manufacturing method of an involute transformer core, which comprises the following steps: S1, cutting a stainless steel silicon steel sheet to obtain a silicon steel sheet blank; S2, using a rolling tool to manufacture the silicon steel sheet blank into an involute silicon steel sheet; S3, stacking a plurality of the involute silicon steel sheets on the periphery of a base cylinder, and tightly holding the involute silicon steel sheets and the base cylinder by using a plurality of stainless steel hoops to form a holding piece, and annealing the holding piece as a whole; S4, bundling; S5, preheating the bundled piece; S6, immersing the preheated bundled piece into insulating paint; S7, solidifying the bundled piece; S8, surface treatment; and S9, gluing, coating epoxy glue on the outer surface of the component which has been surface treated in the step S8, and firmly bonding the component with an epoxy cylinder. The manufacturing method of the involute transformer core provided by the application has single specification of the involute silicon steel sheet, avoids a plurality of specifications of the width of the radial silicon steel sheet, is convenient to manage, and reduces storage devices.

The invention relates to the use of a heat-transfer fluid based on an aliphatic monoester in the manufacturing of semiconductor components.

The invention relates to the use of a heat transfer fluid based on aliphatic monoesters in the manufacture of semiconductor components.

An apparatus for heat transfer includes a device and a mechanism for transferring heat to or from the device. The mechanism includes a working fluid that includes a fluorinated aromatic compound having structural formula (I): where Q is a carbon atom or a nitrogen atom; G is an oxygen atom or a sulfur atom; each R1 is, independently, a fluoroalkenyl group having 2 to 11 carbon atoms and optionally comprises one or more catenated heteroatoms; each R2 is, independently, (i) a hydrogen atom or a fluorine atom; or (ii) a fluoroalkyl group or a fluoroalkenyl group having 1 to 9 carbon atoms and optionally comprises one or more catenated heteroatoms; each R3 is, independently, a hydrogen atom or a fluorine atom; x is 1-3; a is 1-2; y is 1-5; when Q is a carbon atom, z=6-y-a; and when Q is a nitrogen atom, z=5-y-a.

The present invention relates to branched monoesters of formula (I) and to dielectric fluid compositions intended for use as cooling fluids for electrical equipment systems, comprising at least one of these branched monoesters of formula (I). The present invention also relates to a method for cooling electrical equipment systems by use of the dielectric fluid composition according to the invention.

There is provided a fluorine-containing copolymer comprising tetrafluoroethylene unit, hexafluoropropylene unit, and a fluoro(alkyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 8.6 to 11.9% by mass with respect to the whole of the monomer units, a content of the fluoro(alkyl vinyl ether) unit of 0.5 to 1.9% by mass with respect to the whole of the monomer units, a melt flow rate at 372°C of 4.6 to 14.4 g / 10 min, and a total number of - CF2H, a carbonyl group-containing terminal group, -CF=CF2 and - CH2OH per 106 main-chain carbon atoms of 90 or less.

The present invention relates to a specific combination of esters, a composition comprising it, and its uses as a lubricant and / or liquid dielectric coolant.

The invention discloses binary hydrocarbon insulating liquid, a preparation method and application of the binary hydrocarbon insulating liquid in an oil-immersed transformer, and belongs to the technical field of liquid insulating dielectrics. The binary hydrocarbon insulating liquid is composed of the following components in percentage by volume: 10-30% of short-chain low-branched alkane; the balance is long-chain multi-branched alkane, and the total percentage is 100%; in the short-chain low-branched alkane, the number of carbon atoms of a first main chain is 15-20, the number of first branched chains is 1-2, the first branched chains are methyl and / or ethyl, and the first branched chains are distributed at the end part of the first main chain; in the long-chain multi-branched alkane, the number of carbon atoms of a second main chain is 21-28, the number of second branched chains is 2-6, and the second branched chains are methyl and / or ethyl. The binary hydrocarbon insulating liquid provided by the invention has excellent lightning impulse insulating performance.

The present invention relates to the use of a heat transfer composition comprising at least one refrigerant selected from the group consisting of halogenated hydrocarbons, perhalogenated hydrocarbons, fluorinated ketones, fluorinated ethers, and combinations thereof, and at least one dielectric fluid, said heat transfer composition having a volume resistivity greater than or equal to 10 6 Ω.cm at 25°C, for cooling devices, such as batteries of electric or hybrid vehicles.

To provide a composition for forming a low dielectric resin which exhibits high heat resistance after curing and a low dielectric constant and a low dielectric loss tangent in a high frequency region, and a composition for forming a low dielectric resin which can be adjusted in a varnish form by absence of a solvent or use of a small amount of an organic solvent, and to provide a composition for forming a low dielectric resin which exhibits high transparency or high heat dissipation property in addition to the above characteristics.MEANS: A compound (1) having a cis-1,4-cyclohexylene structure, and a composition containing at least one selected from its polymer maintain flowability in a temperature range around normal temperatures, can be adjusted in a varnish form by absence of a solvent or use of a small amount of an organic solvent, can be molded in a solution process, exhibit high heat resistance after curing and a low dielectric constant and a low dielectric loss tangent in a high frequency region, and can achieve a curable resin composition exhibiting high thermal conductivity.SELECTED DRAWING: None

The present invention relates to lubricant composition comprising:a corrosion inhibitor comprising A1 and A2:A1: 0.3-3 wt. % of one or more octadecylamine N—C10-20 alkanoyl sarcosinates,A2: 1-5 wt. % of one or more substances selected from lanolin magnesium soap, lanolin calcium soap, lanolin barium soap, lanolin lithium soap, barium petroleum sulfonate and sodium petroleum sulfonate,0.2-2 wt. % of one or more surfactants selected from Span-80, AEO-9 and TX-4;10-40 wt. % of a lubricant base,0.2-2 wt. % of fullerene C60,50-80 wt. % of a solvent selected from D80, D100 and D110, andoptionally, a propellant gas;all wt. % percentages are based on the total weight of the lubricant composition.

The present disclosure provides a diesel fuel component produced from feedstock of biological origin and a method for producing the same. The present disclosure provides diesel fuel blends containing the diesel fuel component of biological origin and at least one additional diesel fuel.

The present disclosure provides a marine fuel component produced from feedstock of biological origin and a method for producing the same. The present disclosure provides marine fuel blends containing the marine fuel component of biological origin and at least one additional marine fuel.

The invention relates to the use of a heat-transfer fluid based on an aliphatic diester in the manufacturing of semiconductor components.

The invention provides a heating device. The heating device comprises a sealed gas storage structure; the cover body is connected with the sealed gas storage structure; the heating assembly is used for heating the insulating oil; at least part of the adjusting assembly is movably arranged and connected with the sealed gas storage structure so as to adjust the total resistance value of the heating assembly connected into a circuit or control the on-off state of the circuit where the heating assembly is located; when the sealed gas storage structure shrinks, the sealed gas storage structure drives at least part of the adjusting assembly to move towards the side far away from the sealed gas storage structure, so that the total resistance value of the heating assembly connected into the circuit is reduced or the circuit where the heating assembly is located is controlled to be in a conducting state. The problem that a voltage transformer in the prior art cannot adapt to a low-temperature environment is solved.

There is provided a copolymer containing tetrafluoroethylene unit and perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of perfluoro(propyl vinyl ether) unit of 5.5 to 6.5% by mass with respect to the whole of the monomer units, a melt flow rate at 372°C of 36.1 to 49.9 g / 10 min, and the number of functional groups of 50 or less per 106 main-chain carbon atoms.

The invention provides an insulating medium and a preparation method and application thereof. The insulating medium comprises insulating gas and perfluoropolyether oil, the insulating gas comprises perfluoroisobutyronitrile or perfluoropentanone, the mass ratio of the perfluoropolyether oil to the insulating gas is (1: 10)-(1: 15), and the insulating medium can avoid corrosion when a metal material in electrical equipment is in contact with the insulating medium and has good insulating performance.

There is provided a coated electric wire comprising a core wire and a coating layer installed on a periphery of the core wire, wherein the coating layer comprises a fluorine-containing copolymer comprising tetrafluoroethylene unit, hexafluoropropylene unit, and a fluoro(alkyl vinyl ether) unit, the fluorine-containing copolymer has a content of hexafluoropropylene unit of 9.5 to 10.5% by mass with respect to the whole of the monomer units, the fluorine-containing copolymer has a content of the fluoro(alkyl vinyl ether) unit of 0 to 0.3% by mass with respect to the whole of the monomer units, and the fluorine-containing copolymer has a melt flow rate at 372°C of 5.6 to 8.9 g / 10 min.

The present disclosure provides a diesel fuel component produced from feedstock of biological origin and a method for producing the same. The present disclosure provides diesel fuel blends containing the diesel fuel component of biological origin and at least one additional diesel fuel.

There is provided a fluorine-containing copolymer comprising tetrafluoroethylene unit, hexafluoropropylene unit and perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 9.4 to 10.1% by mass with respect to the whole of the monomer units, a content of perfluoro(propyl vinyl ether) unit of 0.8 to 1.7% by mass with respect to the whole of the monomer units, a melt flow rate at 372°C of 4.5 to 8.5 g / 10 min, and a total number of a carbonyl group-containing terminal group, -CF=CF2 and -CH2OH per 106 main-chain carbon atoms of 90 or less.

The invention provides a heating device. The heating device is used for heating insulating oil and comprises a shell with a first containing cavity and a mounting hole; the sealed gas storage structure is provided with a telescopic part, and the telescopic part synchronously stretches and retracts along with the sealed gas storage structure; the heating assembly comprises a heating resistor and a conductive assembly, and at least part of the conductive assembly is slidably arranged and connected with the telescopic part so as to synchronously move along with the telescopic part; at least part of the conductive component is in contact with the heating resistor; a first lead end of the heating resistor is electrically connected with the conductive component, a second lead end of the heating resistor is electrically connected with the power supply, and the conductive component is electrically connected with the power supply; when the sealed gas storage structure shrinks, the telescopic part drives at least part of the conductive assembly to move in the first direction, so that the total resistance value of the heating resistor connected to the power supply is reduced. The problem that in the prior art, a voltage transformer and a capacitor cannot adapt to the low-temperature environment is solved.

The invention relates to the use of a heat transfer fluid based on aliphatic diesters in the manufacture of semiconductor components.

The invention relates to the technical field of transformer insulating oil, and discloses an adsorption decolorization process of natural ester insulating oil. According to the adsorption decolorization process, activated carbon, calcium oxide and water are firstly adopted to prepare a calcium-based alkaline adsorbent, and then the calcium-based alkaline adsorbent is mixed with natural ester insulating oil for adsorption decolorization; and filtering the natural ester insulating oil after adsorption and decoloration to obtain the base oil after adsorption and decoloration. According to the method, the calcium-based alkaline adsorbent with activated carbon and calcium oxide as components is used for adsorbing and decolorizing the natural ester insulating oil, so that common pigments in the vegetable oil can be preliminarily removed, and impurities, trace metals and some odor substances in the vegetable oil can be removed. According to the adsorption decolorization process, the acid value and the dielectric loss factor in the vegetable oil can be reduced, so that the natural ester insulating oil reaches a relatively excellent level, and subsequent refining procedures and operations are reduced.

This application provides a power module, an inverter, and a vehicle. The power module includes a chip, a heat conducting layer, and a heat dissipation assembly. A thermal conductivity coefficient of the heat conducting layer is greater than or equal to 200 W / mK. The heat dissipation assembly includes a heat dissipation housing. The heat dissipation housing encloses accommodation space, and the chip and the heat conducting layer are disposed in the accommodation space. At least a part of the heat dissipation housing is a hollow housing, and at least one side of the chip is in contact with the hollow housing through the heat conducting layer. The hollow housing is filled with a cooling medium for cooling the heat conducting layer, and the cooling medium is an insulated fluid medium. According to the power module in this application, insulation and sealing of the chip is implemented through the heat dissipation housing and the cooling medium having an insulation property, and a ceramic layer does not need to be disposed as an insulation layer additionally, so that thermal resistance of the power module can be significantly reduced, and heat dissipation performance and reliability of the power module can be improved.

The invention relates to an insulation element (1) with low electrical conductivity for the electrical insulation of an electrotechnical component in the high voltage range. The insulation element (1) comprises artificial fibres (2) and electrically conductive particles (3) having an electrically non-conductive core (5) and an electrically conductive or semi-conductive cladding (6) surrounding the core (5). Moreover, the insulation element (1) comprises a cationic polymer (4).

The present invention relates to a specific combination of esters, a composition comprising it, and its uses as a lubricant and / or liquid dielectric coolant.