Abstract:
Oxide film formed on a spring-retaining flange by heat treatment gets unlikely to peel off, thereby improving wear resistance of a contact surface of the spring-retaining flange with a valve spring. The oxide film 15 of the part of the spring-retaining flange 3 with the valve spring 7 is at least partially removed to make thickness of the oxide film to 0.00 to 0.02 μm.
Abstract:
Vehicle instrument panel reinforcement and a passenger seat airbag device attachment structure employing the vehicle instrument panel reinforcement are provided that are capable of securing the strength and rigidity to support for example a reaction force imparted during deployment of a passenger seat airbag device, and are also capable of achieving a reduction in both cost and weight. Instrument panel reinforcement formed with a quadrilateral shaped closed cross-section profile from an upper member and a lower member is disposed along the vehicle width direction inside a vehicle instrument panel. A circular cylinder shaped collar is disposed inside a closed cross-section portion of the upper member. A passenger seat airbag device is fastened and fixed to the instrument panel reinforcement by a bolt and weld nut, employing the collar.
Abstract:
A vehicle instrument panel reinforcement capable of raising ease of vehicle installation is provided. The instrument panel reinforcement is formed with a cross-section profile of square shaped closed cross-section profile from an upper member and a lower member, is disposed along a vehicle width direction at the inside of a vehicle instrument panel. Plural first protruding portions are formed to one end portion of the upper member, and plural first projection portions are formed to another end portion thereof. Similarly, plural second protruding portions are formed to one end portion of the lower member and plural second projection portions are formed to another end portion thereof. The first protruding portions and the second projection portions, and the first projection portions and the second protruding portions, are projection welded together at plural points simultaneously.
Abstract:
Heat-expandable microspheres include a shell of thermoplastic resin and a blowing agent encapsulated therein having a boiling point not higher than the softening point of the thermoplastic resin, have a maximum expanding ratio not lower than 50 times, and are thermally expanded into hollow particulates having a repeated-compression durability not lower than 75 percent. The method of producing the heat-expandable microspheres includes the steps of dispersing an oily mixture containing a polymerizable component and the blowing agent in an aqueous dispersing medium containing a specific water-soluble compound and polymerizing the polymerizable component contained in the oily mixture.
Abstract:
Oxide film formed on a spring-retaining flange by heat treatment gets unlikely to peel off, thereby improving wear resistance of a contact surface of the spring-retaining flange with a valve spring. The oxide film 15 of the part of the spring-retaining flange 3 with the valve spring 7 is at least partially removed to make thickness of the oxide film to 0.00 to 0.02 μm.
Abstract:
A method that heat-expandable microspheres includes the use of a shell of thermoplastic resin and a non-fluorine blowing agent encapsulated therein having a boiling point not higher than the softening point of the thermoplastic resin. The method includes a step of dispersing an oily mixture containing a polymerizable component, the blowing agent, and a polymerization initiator containing a peroxydicarbonate in an aqueous dispersing medium to polymerize the polymerizable component contained in the oily mixture. The resultant heat-expandable microspheres have a shell which is less apt to become thinner than its theoretical value, contain minimum amount of resin particle inside their shell, and have excellent heat-expanding performance.
Abstract:
An epoxy resin composition is provided comprising (A) an epoxy resin, (B) a phenolic resin curing agent, (C) an inorganic filler, (D) a cure accelerator, (E) an adhesion promoter, and (F) a metal oxide. The metal oxide (F) is a combination of a magnesium/aluminum ion exchanger, a hydrotalcite ion exchanger, and a rare earth oxide in a ratio of 0.5-20:0.5-20:0.01-10 pbw, relative to 100 pbw of epoxy resin (A) and curing agent (B) combined.
Abstract:
A semiconductor encapsulating epoxy resin composition is provided comprising (A) an epoxy resin, (B) a phenolic resin curing agent, (C) a molybdenum compound, (D-i) an organopolysiloxane, (D-ii) an organopolysiloxane cured product, or (D-iii) a block copolymer obtained by reacting an epoxy resin or alkenyl group-bearing epoxy resin with an organohydrogenpolysiloxane, and (E) an inorganic filler. The composition has improved moldability and solder crack resistance while exhibiting high flame retardance despite the absence of halogenated epoxy resins and antimony oxide.
Abstract:
A semiconductor encapsulating epoxy resin composition comprising (A) an epoxy resin, (B) a phenolic resin curing agent, (C) a molybdenum compound, and (D) 300-900 parts by weight per 100 parts by weight of components (A) and (B) combined of an inorganic filler contains nitrogen atoms in an amount of 1.5-20% by weight based on the weight of components (A) and (B) combined. Cured parts of the composition exhibit high-temperature capabilities and flame retardance despite the absence of halogenated epoxy resins and antimony trioxide.