摘要:
Provided is a semiconductive tape in which semiconductive resin layers in which metal particles are dispersedly mixed are disposed on a fibrous insulation substrate, wherein the metal particles have a melting point higher than the curing temperature of the thermosetting resin to be subjected to an impregnation treatment and lower than the softening point of the fibrous insulation substrate. The semiconductive tape is used for the stator coil of a rotating electric machine to suppress erosion of the thermosetting resin, impairment of semiconductivity thereof, and the like caused by heat generation, discharges and the like during operation of the rotating electric machine, thus exhibiting corona resistance stably over an extended period of time.
摘要:
Provided is a stator coil, including: a coil conductor; a first insulating layer in which a first mica tape is wound and laminated around an outer periphery of the coil conductor; and a second insulating layer in which a second mica tape is wound and laminated around an outer periphery of the first insulating layer, wherein the first mica tape contains mica in a specific content, wherein 60 mass % or more of the mica contained in the first mica tape passes through a JIS standard sieve having a nominal opening of 250 μm, wherein the first mica tape has a specific lamination thickness, and wherein 40 mass % or less of mica contained in the second mica tape passes through the JIS standard sieve having a nominal opening of 250 μm.
摘要:
Provided is an insulating varnish composition, including: two or more kinds of epoxy resins; and a filler having an average primary particle diameter of 500 nm or less, wherein the two or more kinds of epoxy resins contain 80 mass % or more of an epoxy resin having a number of repetitions of 0 in a molecular structural formula thereof with respect to a total mass of the two or more kinds of epoxy resins.
摘要:
Provided is a liquid thermosetting resin composition, including: a thermosetting resin (1) ; a nanocarbon (2) ; an organic additive (5) that has functional groups reactive with the thermosetting resin and the nanocarbon at molecular ends thereof; a polymerizable unsaturated monomer; and a polymerization initiator for the polymerizable unsaturated monomer, wherein content of the nanocarbon (2) is 0.1 mass % or more and 10 mass % or less with respect to the liquid thermosetting resin composition.
摘要:
A curable composition (X) includes: an epoxy resin (A); a curing agent (B); a curing promoter (C); and hydrophilic inorganic particles (D). The epoxy resin (A) includes a first epoxy resin (a1) and a second epoxy resin (a2). The first epoxy resin (a1) is a chain aliphatic epoxy resin having a hydrophilic group, and an aqueous dissolution rate of the first epoxy resin (a1) is not less than 20 mass % and not more than 99 mass %. The second epoxy resin (a2) includes at least one selected from the group consisting of a cyclic aliphatic epoxy resin, an aromatic epoxy resin and a heterocyclic epoxy resin.
摘要:
A thermosetting resin composition of the present disclosure includes an epoxy resin (1) containing a curing agent, and inorganic particles (2) having a rutile-type crystal structure and an average particle diameter of 500 nm or less. Further, a stator coil of the present disclosure includes a coil conductor (6), and an insulating layer (7) obtained by winding an insulating tape around the coil conductor (6), impregnating the insulating tape with the thermosetting resin composition, and molding the impregnated insulating tape by heating and pressurizing. In addition, a rotating electric machine of the present disclosure includes a stator core (4) having a slot (10), in which the stator coil (5) is accommodated. According to the present disclosure, it is possible to obtain a thermosetting resin composition capable of achieving improvement in machine life through suppression of partial discharge and miniaturization and high output of the machine through improvement of a dielectric-breakdown electric field property, a stator coil obtained through use of the thermosetting resin composition, and a rotating electric machine.
摘要:
The insulating tape of the present invention includes a mica layer containing mica, a reinforcing layer laminated on the mica layer and containing a filler and a fiber reinforcing material, and a cellulose derivative layer laminated on the reinforcing layer. The cellulose derivative layer contains a cellulose derivative in which one or more hydroxyl groups in the glucose units are substituted with a functional group such as —CH2CH2OH or —(CH2CH2O)pH (in the formula, p is any repeating number greater than 0 up to 50). The weight per unit area of the mica ranges from 100 g/m2 to 200 g/m2. The filler has a maximum particle size of 100 μm or smaller and a weight per unit area ranging from 10 g/m2 to 50 g/m2. The present invention can provide an insulating tape that can form a stator coil insulating layer with high thermal conductivity, with no outflow of a filler supported beforehand on the insulating tape to the exterior during production of the stator coil, and that can enhance bonding strength between portions of the insulating tape.
摘要翻译:本发明的绝缘胶带包括含有云母的云母层,层叠在云母层上并含有填料和纤维增强材料的增强层和层叠在增强层上的纤维素衍生物层。 纤维素衍生物层含有纤维素衍生物,其中葡萄糖单元中的一个或多个羟基被诸如-CH 2 CH 2 OH或 - (CH 2 CH 2 O)pH的官能团取代(在该式中,p是大于0的任何重复数,直到 50)。 云母的单位面积重量为100g / m 2〜200g / m 2。 填料的最大粒径为100μm以下,每单位面积的重量为10g / m 2〜50g / m 2。 本发明可以提供一种能够形成具有高导热性的定子线圈绝缘层的绝缘带,在定子线圈的制造期间,绝缘带上预先支撑在外部的填料不会流出,并且可以增强 绝缘带的一部分。