Abstract:
PROBLEM TO BE SOLVED: To provide a method in which a layered clay mineral can be uniformly dispersed in an epoxy resin without executing a treatment of making an organic substance by an intercalating method between layers, and that can decrease the environmental load.SOLUTION: The method of manufacturing an insulating resin composition for high-voltage equipment includes: (a) a process in which a layered clay mineral is swollen by either of water and a water-based mixing solvent to obtain a layered clay mineral-dispersed liquid; (b) a process in which a silane coupling agent is added to the layered clay mineral-dispersed liquid, so that the surface of the layered clay mineral is made to have an organic function to obtain an organic functionalized layered clay mineral-dispersed liquid; and (c) a process in which an epoxy resin and an organic solvent compatible with the epoxy resin are added to the organic functionalized layered clay mineral-dispersed liquid, to be kneaded.
Abstract:
PROBLEM TO BE SOLVED: To solve such a problem that, in a solid insulation switchgear, a cast resin gradually deteriorates at the interface between a main circuit part and the cast resin due to long-term use, thereby leading to breakdown. SOLUTION: The switchgear is configured by connecting an opening/closing mechanism, having a vacuum valve such as a vacuum circuit-breaker or a vacuum isolator, using a metal conductor. In the switchgear, at least the main circuit is insulated by an epoxy cast resin in which nanoparticles are dispersed. The vacuum valve and/or the metal conductor are/is configured such that the surface is roughened and coated with at least one base coating agent selected from a coupling agent, a primer agent, and a surface modifier. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method and system for effectively isolating cellulose, hemicellulose, lignin components by employing biomass resources as starting materials. SOLUTION: The method includes treatment of the biomass resources as starting materials with basidiomycete, rot fungi, and treating the product of treatment with hot liquid at high pressure. The product of treatment with hot liquid at high pressure is further, treated with an enzyme. The monosaccharides and/or oligosaccharides are effectively produced. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a fiber-reinforced composite material improved in heat resistance, mechanical strengths and electro-discharge resistance in comparison with conventional fiber-reinforced composite materials, and electric appliances. SOLUTION: The fiber-reinforced composite material is prepared by adding a thermosetting resin to a fibrous base material. In the composite material, spherical particles having ≤100 nm average size are added to the thermosetting resin in the range of 1-10% weight ratio. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To improve voltage-withstanding characteristics between a pair of contacts of a switching device. SOLUTION: The switching device is provided with an insulating vessel 2 with insulating gas 15 sealed in, a fixed side conductive shaft 5 airtightly fixed to one of the openings of the insulating vessel 2, a fixed side contact 4 fitted at an end part of the fixed side conductive shaft in the insulating vessel 2, a movable side contact 6 fitted in free attachment and detachment to and from the fixed side contact 4, a movable side conductive shaft 7 moving freely in airtightness along the other opening of the insulating vessel 2, and an operating mechanism 17 coupled with the movable conductive shaft 7. The insulating vessel 2 is to be a multilayered insulating layer, with a specific inductive capacity getting larger toward an inner layer. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To improve heat resistance and oxidation deterioration resistance in an insulating coil for high tension equipment including an insulating layer using thermosetting resin such as epoxy resin. SOLUTION: The insulating coil 3 for high tension equipment comprises a conductor 1 through which a high tension current is conducted, and an insulating layer 2 provided around the conductor 1. In the insulating layer 2, a mica sheet of paper and a reinforcing member for example are bonded to each other via a thermosetting resin layer, and a lamellar clay mineral is dispersed in the thermosetting resin layer. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To easily form the ground layer of a sheath-grounded molded electrical apparatus in a short time. SOLUTION: A formation method for the ground layer of a sheath-grounded molded electrical apparatus comprises: a step in which silicone mold releasing agent is applied to a metal mold, and insulating material is molded with the metal mold with a main circuit end exposed to prepare an electrical apparatus with an insulating layer 2 formed thereon; a step in which paintable silicone compatible with the silicone mold releasing agent is applied to the outer face of the insulating layer 2; and a step in which epoxy-resin electrical conductive coating is applied to the outer face of the insulating layer 2 to form a ground layer 5. After the application of the paintable silicone, the epoxy-resin electrical conductive coating is applied with this state maintained. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an enameled wire wherein an voltage resistance life to a surge voltage of an inverter and a heat deterioration resistance life are elongated by suppressing the weight percentage of an inorganic filling material. SOLUTION: A film coated layer (12) composed of a polymeric compound evenly combined with a flat inorganic filling material is provided around a conductive wire (11). Further, a film coated layer (23) composed of a polyesterimide resin solution coated on the polymeric compound combined with a flat and fine inorganic filling material is provided around a conductive wire (21), and a polyamideimide film coated layer (24) is provided on the film coated layer (23). COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a reliable semiconductor device excellent in insulation characteristics and heat-resistance cycle property. SOLUTION: The semiconductor device comprises, at least, an insulating substrate, a plurality of metal plates disposed on the insulating substrate, and a semiconductor element disposed on the metal plates. It comprises: (1) a solid insulator which coats a gap between adjoining metal plates and a slit formed at the solid insulator: (2) the solid insulator which coats the gap between adjoining metal plates and a film, instead of the slit, which is not adhesive to the solid insulator: and (3) a thermo-setting elastomer which is a flexible rubber-like material and coats the gap between the adjoining metal plates.
Abstract:
PROBLEM TO BE SOLVED: To provide a semiconductor device superior in insulation withstand voltage characteristic and heat resistant cycle and rich in reliability. SOLUTION: The semiconductor device comprises a heat sink 5, an insulation board 1 on the heat sink 5, surface side conductor plates 21, 22, 23 arranged selectively on the insulation plate 1, semiconductor chips 31, 32 arranged on the surface side conductor plates 21, 22, 23, a solid insulator 11 brought into contact with the outer peripheral ends of the surface side conductor plates 21, 22, 23 and arranged on the upper face of the insulation board 1, a case 6 provided on the heat sink 5 so as to surround the insulation board 1, and a soft insulator 9 filled into the case 6. The solid insulator 11 has an intermediate thermal expansion coefficient between the thermal expansion coefficients of the surface side conductor plates 21, 22, 23 and the insulation board 1.