Abstract: A solid adhesive is described that has an excellent finish, a light coating feeling, and is also capable of adhering to paper, wood, cloth, and the like. The solid adhesive contains water, an organic solvent, a gelation agent such as a dibenzalide of pentavalent to hexavalent sugar alcohol, and a polyvinyl formal resin. In some examples, the solid adhesive further includes a polyvinyl butyral resin and/or an adhesive resin such as a polyvinyl pyrrolidone resin. A feed type solid adhesive may be provided, including a feeding container that is filled with the solid adhesive described above.

Abstract: An insulating thermally conductive resin composition (1) includes a phase-separated structure including: a first resin phase (2) in which a first resin continues three-dimensionally; and a second resin phase (3) different from the first resin phase and formed of a second resin. Moreover, the insulating thermally conductive resin composition includes: small-diameter inorganic filler (4) unevenly distributed in the first resin phase; and large-diameter inorganic filler (5) that spans the first resin phase and the second resin phase and thermally connects pieces of the small-diameter inorganic filler, which is unevenly distributed in the first resin phase, to one another. Then, an average particle diameter of the small-diameter inorganic filler is 0.1 to 15 ?m. Moreover, an average particle diameter of the large-diameter inorganic filler is larger than the average particle diameter of the small-diameter inorganic filler, and is 1 to 100 ?m.

Abstract: An insulating thermally conductive resin composition (1) includes a phase-separated structure including: a first resin phase (2) in which a first resin continues three-dimensionally; and a second resin phase (3) different from the first resin phase and formed of a second resin. Moreover, the insulating thermally conductive resin composition includes: small-diameter inorganic filler (4) unevenly distributed in the first resin phase; and large-diameter inorganic filler (5) that spans the first resin phase and the second resin phase and thermally connects pieces of the small-diameter inorganic filler, which is unevenly distributed in the first resin phase, to one another. Then, an average particle diameter of the small-diameter inorganic filler is 0.1 to 15 ?m. Moreover, an average particle diameter of the large-diameter inorganic filler is larger than the average particle diameter of the small-diameter inorganic filler, and is 1 to 100 ?m.

Abstract: A curable resin composition, which contains, with respect to 100 parts of an epoxy resin, 1 to 70 parts of an epoxy resin curing agent and 1 to 50 parts of an acrylic block copolymer, and the acrylic block copolymer contains (?) at least one polymer block A composed of a structural unit derived from an alkyl methacrylate and at least one polymer block B composed of a structural unit derived from an alkyl acrylate, has a weight average molecular weight (Mw) of 30,000 to 300,000 and a molecular weight distribution (Mw/Mn) of 1.5 or less, and contains 3 to 60 percent by mass of the polymer block A. In addition, a cured resin is formed from the above curable resin composition.

Abstract: [Object] A curable epoxy resin composition is provided which is excellent in toughness, is hardly fractured, is strongly adhered to another material, and is also excellent in weather resistance, chemical resistance, and the like while maintaining excellent heat resistance, elastic modulus, and the like inherent to an epoxy resin. [Solution] A curable resin composition contains, with respect to 100 parts of an epoxy resin, 1 to 70 pars of an epoxy resin curing agent and 1 to 50 parts of an acrylic block copolymer, and the acrylic block copolymer contains (?) at least one polymer block A composed of a structural unit derived from an alkyl methacrylate and at least one polymer block B composed of a structural unit derived from an alkyl acrylate, has a weight average molecular weight (Mw) of 30,000 to 300,000 and a molecular weight distribution (Mw/Mn) of 1.5 or less, and contains 3 to 60 percent by mass of the polymer block A. In addition, a cured resin is formed from the above curable resin composition.

Abstract: The invention provides a rubber reinforcing cord that can be suitably used as a material for reinforcing rubber materials such as tires, belts and hoses and is excellent in fatigue resistance. This invention is also a rubber reinforcing cord in which a carbon fiber bundle is impregnated with a resin composition comprising a rubber, wherein the elastic modulus of dried film of the rubber latex at 25° C. (G′) is 0.4 MPa or less, and the carbon fiber bundle has a knot-breaking strength of 500 MPa or more.

Abstract: To provide an epoxy resin composition suitable as a matrix resin for fiber reinforcement, and a yarn prepreg suitable in unwindability, excellent in higher processability due to drapability, high in the tensile strength of the epoxy resin composition after curing, and high in efficiency of the strength of reinforcing fibers. A yarn prepreg, satisfying the following formulae (1) to (3): 50≦Wf≦80  (1) 20,000≦F≦100,000  (2) F/8,000≦d≦F/2,400  (3) where Wf is the content by weight of the fiber bundle (%), F is the number of filaments in the fiber bundle and d is the width of the prepreg (mm).

Abstract: The present invention relates to an epoxy resin composition for a fibre reinforced composite material, which is thermosetting resin composition where the glass transition temperature Tg of the cured material obtained by heating for 2 hours at 180° C. is at least 150° C., and the modulus of rigidity G′R in the rubbery plateau in the temperature region above the aforesaid Tg is no more than 10 MPa. In accordance with the present invention, it is possible to provide a fibre-reinforced composite material which is outstanding in its resistance to hot-wet environmental condition, impact resistance, and strength characteristics such as tensile strength and compression strength, and furthermore it is possible to provide a thermosetting resin composition and a prepreg outstanding in terms of their peel strength to a honeycomb core.

Abstract: The subject of this invention is to provide a rubber reinforcing cord that can be suitably used as a reinforcing material of rubber materials such as tires, belts and hoses and is excellent in fatigue resistance. This invention is a rubber reinforcing cord, characterized in that a carbon fiber bundle having a breaking extension of 1.7% or more is impregnated with a resin composition containing a rubber latex, and that the initial gradient (dM/dy) at y=0 of the bending load M—deflection y curve of the cord is 1000 N/m or less. This invention is a substantially twist-less rubber reinforcing cord, characterized in that a carbon fiber bundle having a breaking extension of 1.7% or more is impregnated with a resin composition containing a rubber latex, and that the number of twist of the cord is 10 per meter or less.

Abstract: The object is to provide a carbon fiber-reinforced rubber material which is superior in heat resistance, water resistance, and dimensional stability and exhibits resistance to fatigue from flexing at a practical level. The present invention relates to a prepreg comprising a liquid rubber composition having a viscosity in a range of 0.01 Pa·s to 100 Pa·s at 70° C. and substantially containing no solvent, the liquid rubber being impregnated into a reinforcing fiber, and relates to a fiber-reinforced rubber material comprising the prepreg in which the liquid rubber is crosslinked. Also, the present invention relates to a fiber-reinforced rubber material comprising a substrate comprising a rubber component, the substrate being reinforced by a core material comprising a prepreg of a reinforcing fiber impregnated with the same rubber component.

Abstract: A woven fabric prepreg comprising at least [A] a woven fabric as reinforcing fibers, [B] a thermosetting resin or thermosetting resin composition and [C] fine particles of a resin and having a cover factor of 95% or more, and a honeycomb sandwich panel, comprising skin panels fabricated by said woven fabric prepreg and [D] a honeycomb core can be obtained. The woven fabric prepreg little changes in tackiness with the lapse of time and has moderate drapability, being excellent in self adhesiveness to the honeycomb core when used as skin panels of a honeycomb sandwich panel. Furthermore, the honeycomb sandwich panel obtained has a small porosity in the skin panels fabricated by the cured prepreg and has excellent surface smoothness with few pits and depressions on the surfaces of the skin panels.

Abstract: The phenolic resin composition for fiber-reinforced composite materials of the invention comprises at least the following constituent elements A and B of a thermoplastic resin: A: phenolic resin, B: at least one thermoplastic resin selected from polyvinyl formals, polyvinyl acetals, polyvinyl butyrals, polyvinyl pyrrolidones, polyvinyl acetates, polyvinyl alcohols, polyethylene glycols, copolymerized nylons and dimer acid polyamides. The resin composition is filmwise applied to reinforcing fibers, and the resulting film is heated under pressure whereby it is impregnated into the reinforcing fibers to give a prepreg for fiber-reinforced composite materials.

Abstract: The subject of this invention is to provide a rubber reinforcing cord that can be suitably used as a reinforcing material of rubber materials such as tires, belts and hoses and is excellent in fatigue resistance. Also, this invention is a rubber reinforcing cord, characterized in that a carbon fiber bundle impregnated with a resin composition comprising a rubber, wherein an elastic modulus of dried film of the rubber latex at 25° C. (G′) is 0.4 MPa or less, said carbon fiber bundle having a knot-breaking strength of 500 MPa or more.

Abstract: To provide an epoxy resin composition suitable as a matrix resin for fiber reinforcement, and a yarn prepreg suitable in unwindability, excellent in higher processability due to drapability, high in the tensile strength of the epoxy resin composition after curing, and high in efficiency of the strength of reinforcing fibers.

Abstract: The subject of this invention is to provide a rubber reinforcing cord that can be suitably used as a reinforcing material of rubber materials such as tires, belts and hoses and is excellent in fatigue resistance. This invention is a rubber reinforcing cord, characterized in that a carbon fiber bundle having a breaking extension of 1.7% or more is impregnated with a resin composition containing a rubber latex, and that the initial gradient (dM/dy) at y=0 of the bending load M—deflection y curve of the cord is 1000 N/m or less. This invention is a substantially twist-less rubber reinforcing cord, characterized in that a carbon fiber bundle having a breaking extension of 1.7% or more is impregnated with a resin composition containing a rubber latex, and that the number of twist of the cord is 10 per meter or less.

Abstract: To provide an epoxy resin composition suitable as a matrix resin for fiber reinforcement, and a yarn prepreg suitable in unwindability, excellent in higher processability due to drapability, high in the tensile strength of the epoxy resin composition after curing, and high in efficiency of the strength of reinforcing fibers. A yarn prepreg, satisfying the following formulae (1) to (3): 50≦Wf≦80  (1) 20,000≦F≦100,000  (2) F/8,000≦d≦F/2,400  (3) where Wf is the content by weight of the fiber bundle (%), F is the number of filaments in the fiber bundle and d is the width of the prepreg (mm).

Abstract: The present invention relates to a carbon fiber prepreg. The carbon fiber prepreg of the present invention is characterized in that a carbon fiber bundle comprising a plurality of continuous carbon filaments and having a hook drop value of 10 cm or more as the degree of fiber entanglement is impregnated with a base resin mainly composed of a thermosetting resin, and that particles of 150 .mu.m or less in particle size made of a thermoplastic resin account for 20 wt % or less based on the weight of the entire prepreg and distributed at a higher concentration in the surface zone than in the inside. The carbon fiber prepreg of the present invention is good in tackiness and less changing in tackiness with the lapse of time, and can form a composite with an excellent compression interlaminar shear strength (CILS) at high temperature after moisture absorption while maintaining good impact resistance.

Abstract: The present invention provides a prepreg having an excellent self adhesiveness to a honeycomb core, a low porosity when used as skin panels, an excellent surface smoothness due to a low surface porosity, and good tackiness and drapability. This invention also provides a honeycomb sandwich panel having a skin panel peel strength, an excellent impact resistance and an excellent hot water resistance, and a composition for a fiber reinforced composite material made from the prepreg and honeycomb sandwich panel. The fiber reinforced composite material made from the prepreg of the present invention can be used for airplanes, automobiles and other industrial applications, particularly as structural materials of airplanes, because of its excellent mechanical properties.

Abstract: Prepregs, comprising the following components [A], [B] and [C], with the component [C] distributed near either or both of the surface layers without being regularly arranged.[A]: Long reinforcing fibers[B]: A matrix resin[C]: Long thermoplastic resin fibersThe prepregs of the present invention are tacky and drapable, and the composite materials obtained by heating and forming the prepregs are high in heat resistance, and very high in impact resistance and inter-layer toughness. Furthermore, the prepregs are easy to produce and high in their latitude in availability of materials.

Abstract: Tough laminated composite material which comprise (A) long reinforcing fibers, (B) a matrix resin mixed with the long reinforcing fibers and (C1) a resin, preferably in the form of fine resin particles, forming a phase separate from said matrix resin which is localized in inter-layer zones, wherein 90% or more of said resin (C1) is localized in inter-layer zones and/or wherein the border length factor in the inter-layer zones is 2.5 or more and prepregs used to form the composite materials.