Abstract:
Provided is a method for manufacturing a composite material including peforming press molding a fiber matrix structure including reinforcing fibers and a matrix resin which mainly includes a polyester-based resin and includes an aromatic polycarbonate resin and. Furthermore, it is preferred that the polyester-based resin is a polyester copolymer and includes a terephthalic acid component and an isophthalic acid component. In addition, it is preferred that the press molding is cold pressing in which a die temperature is 170° C. or lower; that the reinforcing fibers are carbon fibers or fibers mainly including discontinuous fibers; and furthermore, that the discontinuous fibers are randomly oriented in the structure.
Abstract:
Disclosed is a method for manufacturing a composite material, which includes performing press molding of a fiber matrix structure including reinforcing fibers and a matrix resin mainly including a polyester-based resin having a crystallization temperature of 185° C. or lower. Furthermore, the polyester-based resin is preferably a polyester-based copolymer. In addition, it is preferred that the matrix resin includes a carbodiimide, and that the carbodiimide has a cyclic structure. Moreover, it is preferred that the press molding is cold pressing in which a die temperature is 170° C. or lower; that the reinforcing fibers are carbon fibers; and that the discontinuous fibers are randomly oriented in the structure.
Abstract:
The present invention provides a method for producing a molded article by pressing a composite material containing a resin composition and carbon fibers, wherein the resin composition contains a polyamide resin, a copper compound and potassium halide, and (1) the copper compound content is 0.1 parts by mass or more relative to 100 parts by mass of the polyamide resin.
Abstract:
The present invention provides a method for producing a molded article by pressing a composite material containing a resin composition and carbon fibers, wherein the resin composition contains a polyamide resin, a copper compound and potassium halide, and (1) the copper compound content is 0.1 parts by mass or more relative to 100 parts by mass of the polyamide resin.
Abstract:
A fiber-reinforced composite material obtained by reinforcing a matrix resin with fibers, wherein the matrix resin contains a thermoplastic resin and a carbon black, the fibers are discontinuous carbon fibers, a part of the discontinuous carbon fibers forms fiber bundles, and the thickness of a thinnest part of the matrix resin which is located between an outermost surface of the composite material and the fibers existing in an inside of the composite material is less than 100 μm. Further, it is preferred that the thermoplastic resin is a polyamide-based resin, that the discontinuous carbon fibers have a length of from 3 to 100 mm, and that the orientation of the discontinuous carbon fibers is random. Furthermore, it is preferred that the size of the primary particle diameter of the carbon black is within a range of 7 to 75 nm.
Abstract:
A fiber-reinforced composite material obtained by reinforcing a matrix resin with fibers, wherein the matrix resin contains a thermoplastic resin and a carbon black, the fibers are discontinuous carbon fibers, a part of the discontinuous carbon fibers forms fiber bundles, and the thickness of a thinnest part of the matrix resin which is located between an outermost surface of the composite material and the fibers existing in an inside of the composite material is less than 100 μm. Further, it is preferred that the thermoplastic resin is a polyamide-based resin, that the discontinuous carbon fibers have a length of from 3 to 100 mm, and that the orientation of the discontinuous carbon fibers is random. Furthermore, it is preferred that the size of the primary particle diameter of the carbon black is within a range of 7 to 75 nm.
Abstract:
Disclosed is a method for manufacturing a composite material, which includes performing press molding of a fiber matrix structure including reinforcing fibers and a matrix resin mainly including a polyester-based resin having a crystallization temperature of 185° C. or lower. Furthermore, the polyester-based resin is preferably a polyester-based copolymer. In addition, it is preferred that the matrix resin includes a carbodiimide, and that the carbodiimide has a cyclic structure. Moreover, it is preferred that the press molding is cold pressing in which a die temperature is 170° C. or lower; that the reinforcing fibers are carbon fibers; and that the discontinuous fibers are randomly oriented in the structure.