Fiber-reinforced resin intermediate material, fiber-reinforced resin molded article, and method for producing fiber-reinforced resin intermediate material
AssigneeThe Japan Steel Works, Ltd.
InventorsAkio ONO, Hiroshi ITO, Tsukasa SHIROGANEYA, Takuya NIYAMA, Takuya IWAMOTO, Shigeki INOUE
Life of this patent
Estimating the term…
Abstract
The fiber-reinforced resin intermediate material according to the present invention is formed by attaching a resin powder to an outer surface of a reinforcing fiber substrate formed of reinforcing fibers and heating it to melt the resin powder to the outer surface of the reinforcing fiber substrate so as to have an uneven shape derived from the resin powder and also have an opened void space.
Claims19
A fiber-reinforced resin intermediate material formed by attaching a resin powder to an outer surface of a reinforcing fiber substrate, which is formed of reinforcing fibers, and heating the reinforcing fiber substrate, to which the resin powder is attached, to melt the resin powder to the outer surface of the reinforcing fiber substrate so as to have an uneven shape derived from the resin powder and to have an opened void space.
A fiber-reinforced resin intermediate material formed by attaching a resin powder to an outer surface of a reinforcing fiber substrate formed of carbon fibers and heating the reinforcing fiber substrate, to which the resin powder is attached, to melt the resin powder so as to have an opened void space on the outer surface of the reinforcing fiber substrate,
- wherein the minimum radius of curvature of the fiber-reinforced resin intermediate material is within 20 times as large as the thickness thereof, and
- wherein the minimum radius of curvature is a radius of curvature at the time of fracture/breakage when the fiber-reinforced resin intermediate material is bent at room temperature.
A fiber-reinforced resin intermediate material formed by attaching a resin powder to an outer surface of a reinforcing fiber substrate formed of reinforcing fibers and heating the reinforcing fiber substrate, to which the resin powder is attached, to melt the resin powder to the outer surface of the reinforcing fiber substrate,
- wherein the melting to the outer surface of the reinforcing fiber substrate means a state that the melted resin powder almost remains on the outer surface and is melted thereto.
A method for manufacturing a fiber-reinforced resin intermediate material formed by melting a resin powder so as to have a void space opened on an outer surface of a reinforcing fiber substrate,
- wherein a resin powder having a predetermined average particle size is attached to the reinforcing fiber substrate so that the fiber volume content of the reinforcing fiber substrate becomes a predetermined value, based on the outer diameter of the reinforcing fiber that forms the reinforcing fiber substrate and the bulk density of the reinforcing fiber substrate, thereby molding the fiber-reinforced resin intermediate material.
Dependencies are inferred from the claim text.