摘要:
An alternating current generator for vehicle has a permanent magnet in the rotary field core unit. Providing such magnet is effective to reduce leakage magnetic flux and the size of the machine. In order to magnetize the magnet without trouble caused by machined chips or iron powder, the magnet is magnetized after the rotary field core has been machined. While the magnet is magnetized in a short period by a pulse current, the field coil is short-circuited. The field coil is subjected to magnetizing flux passing therethrough and generates short-circuit current and, consequently, counter magnetomotive force, which prevents leakage of the magnetizing flux.
摘要:
It is an object to provide a prepreg for a printed laminate that has a low thermal expansion coefficient in the planar direction, excellent drillability, and further excellent heat resistance and flame retardancy, and a laminate and a metal foil-clad laminate. A resin composition according to the present invention includes a molybdenum compound (A); an epoxy resin (B); a curing agent (C); and an inorganic filler (D), wherein a Mohs hardness of the inorganic filler (D) is 3.5 or more, and a content of the inorganic filler (D) is 40 to 600 parts by mass based on 100 parts by mass of a total of resin solid components.
摘要:
A resin composition contains a cyanate ester compound, a maleimide compound, an epoxy resin, a silicone rubber powder, and an inorganic filler. The cyanate ester compound contains a compound represented by the following formula. The silicone rubber powder is contained in an amount of 40 to 150 parts by mass based on 100 parts by mass in total of the cyanate ester compound, the maleimide compound, and the epoxy resin. The inorganic filler is contained in an amount of 100 to 340 parts by mass based on 100 parts by mass in total of the cyanate ester compound, the maleimide compound, and the epoxy resin. A total content of the silicone rubber powder and the inorganic filler is 140 to 380 parts by mass based on 100 parts by mass in total of the cyanate ester compound, the maleimide compound, and the epoxy resin.
摘要:
A resin composition contains a cyanate ester compound, a maleimide compound, an epoxy resin, a silicone rubber powder, and an inorganic filler. The cyanate ester compound contains a compound represented by the following formula. The silicone rubber powder is contained in an amount of 40 to 150 parts by mass based on 100 parts by mass in total of the cyanate ester compound, the maleimide compound, and the epoxy resin. The inorganic filler is contained in an amount of 100 to 340 parts by mass based on 100 parts by mass in total of the cyanate ester compound, the maleimide compound, and the epoxy resin. A total content of the silicone rubber powder and the inorganic filler is 140 to 380 parts by mass based on 100 parts by mass in total of the cyanate ester compound, the maleimide compound, and the epoxy resin.
摘要:
There is provided a resin composition for printed wiring boards that, while maintaining excellent flame retardance, has excellent heat resistance, reflow resistance, and drilling workability, and, at the same time, has low water absorption without use of halogen compounds and phosphorus compounds. The resin composition comprises (A) a non-halogen epoxy resin, (B) a biphenyl aralkyl phenolic resin, (C) a maleimide compound and (D) an inorganic filler.
摘要:
This invention relates to a method for storing a naphthol aralkyl type cyanate ester resin solution, which is difficult to precipitate due to long term storage in a solution state, and particularly relates to a method for storing a naphthol aralkyl type cyanate ester resin solution (AB), which comprises: preparing (i) a naphthol aralkyl type cyanate ester resin solution (AB) comprising a naphthol aralkyl type cyanate ester resin (A), a maleimide compound (B) and a solvent, (ii) a naphthol aralkyl type cyanate ester resin solution (AB) comprising a prepolymer of a naphthol aralkyl type cyanate ester resin (A), a maleimide compound (B) and a solvent, or (iii) a naphthol aralkyl type cyanate ester resin solution (AB) comprising a prepolymer of a naphthol aralkyl type cyanate ester resin (A) and a maleimide compound (B), and a solvent, and; storing the resin solution (AB).
摘要:
Disclosed is a thin film which is used in the production process of a semiconductor device. The thin film contains germanium, silicon, nitrogen and hydrogen.
摘要:
A sidewall spacer film or the like is removed without damaging a device structure section. Specifically disclosed is a method for manufacturing a semiconductor device, which comprises a step of forming a first thin film composed of GeCOH or GeCH on a substrate (21) to be processed, a step of removing a part of the first thin film and obtaining a remaining portion (30), and a processing step of performing a certain process on the substrate (21) through the space formed by removing the first thin film.
摘要:
It is intended to find characteristics of a pectin having a high molecular weight as compared with the existing pectins which are obtained by extracting plants and provide a method whereby the pectin can be supplied in a large amount. A callus derived from a plant is cultured so as to produce a pectin having a high molecular weight in the culture or the culture broth. Then the desired pectin is obtained by separating from the thus obtained culture or culture broth and purifying. The pectin thus obtained of the present invention has favorable properties as a moisturizer and, therefore, is excellent as a cosmetic material.
摘要:
A swiveling work machine includes a swivel deck mounted to be pivotable about a vertical axis and a side cover for covering one lateral side on the swivel deck, an accommodating space capable of accommodating a work machine accessory being provided inside the lateral cover. The accommodating space accommodates, as the implement accessory, a work oil tank, a fuel tank and a control valve unit. The work oil tank is disposed at a fore-and-aft intermediate portion on one lateral side on the swivel deck. The fuel tank is disposed forwardly of the work oil tank with forming a gap relative thereto. The control valve unit is disposed upwardly of the fuel tank and longitudinally along the fore/aft direction.