Abstract: Provided are an acoustic matching layer material containing a curing reaction product obtained by reacting an epoxy resin (A) having an epoxy equivalent weight of 140 or less with at least one of a curing agent (B-1) which is a monomer or a curing catalyst (B-2), and metal particles (C) having a density of 4.5 g/cm3 or more and less than 10 g/cm3 at 20° C., in which a content of particles (D) having a density of less than 4.5 g/cm3 at 20° C. is less than 5% by mass; an acoustic matching sheet; a composition for an acoustic matching layer material; an acoustic wave probe; an acoustic wave measurement apparatus; and a manufacturing method of an acoustic wave probe.

Abstract: A two-component adhesive for an endoscope and a cured product thereof, the adhesive having a base resin and a curing agent. The base resin contains an epoxy resin (A), and the epoxy resin (A) includes an epoxy resin (a) having an average degree of polymerization of 2 or more. Also disclosed are an endoscope produced by using the adhesive for an endoscope and a method for producing the endoscope.

Abstract: An object of the present invention is to provide a woody material for a wind instrument superior in resistance to a moisture change. The woody material for a wind instrument comprises: a plurality of veneers being laminated; and at least one buffer layer comprising a fibrous sheet constituted from a nonwoven fabric or a woven fabric, and an adhesive with which the fibrous sheet is impregnated, the buffer layer being interposed between adjacent two of the plurality of veneers.

Abstract: An object of the present invention is to provide a woody material for a wind instrument superior in resistance to a moisture change. The woody material for a wind instrument comprises: a plurality of veneers being laminated; and at least one buffer layer comprising a fibrous sheet constituted from a nonwoven fabric or a woven fabric, and an adhesive with which the fibrous sheet is impregnated, the buffer layer being interposed between adjacent two of the plurality of veneers.

Abstract: A method of fabricating a bow stick includes winding a prepreg, in which a fiber is impregnated with a resin, on a mandrel with a diameter gradually decreasing toward a distal end, setting a semi-fabricated product, in which the prepreg is wound on the mandrel, into a mold and molding the semi-fabricated product in a shape corresponding to a cavity formed between the mold and the mandrel by heating and pressurizing the semi-fabricated product in the mold, and taking out the mandrel from a molded product molded in the shape corresponding to the cavity to acquire a long and hollow stick body. When adjusting at least one of a weight distribution, a center of gravity, and a weight of the stick body, the volume of the cavity is changed using the mandrel of which the diameter or the diameter variation is gradually changed in an axis direction.

Abstract: A method of fabricating a bow stick includes winding a prepreg, in which a fiber is impregnated with a resin, on a mandrel with a diameter gradually decreasing toward a distal end, setting a semi-fabricated product, in which the prepreg is wound on the mandrel, into a mold and molding the semi-fabricated product in a shape corresponding to a cavity formed between the mold and the mandrel by heating and pressurizing the semi-fabricated product in the mold, and taking out the mandrel from a molded product molded in the shape corresponding to the cavity to acquire a long and hollow stick body. When adjusting at least one of a weight distribution, a center of gravity, and a weight of the stick body, the volume of the cavity is changed using the mandrel of which the diameter or the diameter variation is gradually changed in an axis direction.