Abstract:
An epoxy resin composition comprising an epoxy resin of a specific structure, a phenolic resin of a specific structure, and an inorganic filler is suited for semiconductor encapsulation since it is effectively moldable and cures into products having improved flame retardance, reflow crack resistance and dielectric properties.
Abstract:
An epoxy resin composition comprising a crystalline epoxy resin, a phenolic resin, and an inorganic filler is improved in moldability by previously reacting phenolic hydroxyl groups on the phenolic resin with epoxy groups on the crystalline epoxy resin to form a reaction product and blending the reaction product in the composition. The composition is moldable over semiconductor devices without voids and wire flow. The encapsulated semiconductor devices thus remain reliable.
Abstract:
A chromating composition including hexavalent and trivalent chromium, phosphate ions, silica, and a silane coupling agent and with ratios among its components within certain specified ranges produces a protective layer on the surface of zinc coated steel treated with the composition that has an excellent alkali resistance, corrosion resistance, coatability, and welding tolerance.
Abstract:
A vehicle steering column support structure efficiently supports a steering column. A steering support bracket that supports a steering column is fixed to instrument panel reinforcement disposed along the vehicle width direction between left and right front pillars. A floor brace spans between a side portion of a first support member of the steering support bracket and a side wall portion of a floor tunnel portion. A steering brace spans between a side portion of the first support member and a lower portion of the front pillar. Up-down vibration of the steering column can accordingly be supported by axial force of the floor brace and the steering brace.
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.