Disclosed is a prepreg containing a carbon fiber [A] and a thermosetting resin [B], while satisfying at least one of the following conditions (1) and (2). (1) A thermoplastic particle or fiber [C] and a conductive particle or fiber [D] are contained, and the weight ratio represented by [the blended amount of [C] (parts by weight)]/[the blended amount of [D] (parts by weight)] is 1-1000. (2) A conductive particle or fiber [E], which is obtained by coating a nucleus or core of a thermoplastic resin with a conductive material, is contained.

Prepreg and carbon fiber reinforced composite material

A device may include a display control unit to move a displayed object on a screen of a display device according to movement of the display device. The displayed object is moved to a predetermined position on the screen after the display device stops moving without any user input.

Display control device, display control method, and program

There is provided a random mat including carbon fibers and a matrix resin, wherein the carbon fibers in the random mat have an average fiber length in a range of 3 mm to 100 mm, a fiber areal weight of the carbon fibers is 25 to 10,000 g/m2, the carbon fibers include a specific carbon fiber bundles having a specific opening degree in a specific amount per the total carbon fibers, and the specific carbon fiber bundles with a thickness of 100 μm or more are included in a ratio of less than 3% of the number of the total specific carbon fiber bundles

Random mat and fiber-reinforced composite material

This invention is A prepreg comprising a reinforcing fiber base material impregnated with a thermoplastic resin, wherein the reinforcing fiber base material comprises from 0 to 50% by mass of reinforcing fibers each having a fiber length of more than 10 mm, from 50 to 100% by mass of reinforcing fibers each having a fiber length of from 2 to 10 mm, and from 0 to 50% by mass of reinforcing fibers each having a fiber length of less than 2 mm, the average of two-dimensional orientation angles each formed by a reinforcing filament (a) and a reinforcing filament (b) intersecting the reinforcing filament (a) is from 10 to 80°, the thickness h0 (mm) at 23° C. is 0.03 to 1 mm, and the tensile strength σ is 0.01 MPa or more. The prepreg can be applied for thin molded products which have been considered unsuitable as a laminated molded product and can provide molded products that have a complicated shape and have isotropically high mechanical properties.

Prepreg, preform, molded product, and method for manufacturing prepreg

There is provided an information processing device including an image acquisition unit configured to acquire an input image of a real space captured with an imaging device, a user interface unit configured to display the input image on a screen of a display device and detect a designated position designated by a user on the screen, a computation unit configured to compute a three-dimensional position of a virtual object in an augmented reality space from the designated position detected by the user interface unit, and an authoring unit configured to associate the three-dimensional position of the virtual object computed by the computation unit with the virtual object to store the three-dimensional position in a storage medium.

Information processing device, authoring method, and program

PROBLEM TO BE SOLVED: To provide a carbon fiber bundle for SMC, having excellent cuttability, dispersibility and resin impregnation property in the production of an SMC sheet, exhibiting excellent fluidity in SMC molding process and giving an SMC molded product having excellent mechanical properties. SOLUTION: The carbon fiber bundle is coated with a sizing agent having a styrene solubility of 20-70 wt.% and has a drape value of 15-25 cm at 25°C and a flatness (width/thickness ratio) of the bundle cross-section of 10-60. COPYRIGHT: (C)2006,JPO&NCIPI

Carbon fiber bundle

PROBLEM TO BE SOLVED: To provide a method for producing a chopped fiber bundle and a molding material, which has good impregnating ability, fluidity and followability in molding when used as a molding material, and exhibits excellent mechanical properties when forming fiber reinforced plastic, and to provide a molding material and fiber reinforced plastics obtained by using the chopped fiber bundle. SOLUTION: The method for producing a chopped fiber bundle and a molding material includes continuously supplying a fiber bundle between a pair of rollers, with a thread path fixed, at least one of which rollers has blades arranged in the circumferential direction of the roller at equal intervals, and cutting the fiber bundle by bringing the blades attached on the roller into contact with the receiving part of the other roller, wherein the fiber bundle is cut based on the variation of the predetermined total cross-section area per unit length in the fiber oriented direction, and the molding material and fiber-reinforced plastic are provided by using the chopped fiber bundle. COPYRIGHT: (C)2009,JPO&INPIT

Method for producing chopped fiber bundle and molding material, molding material, and fiber-reinforced plastic

PROBLEM TO BE SOLVED: To provide an economical molding material having good fluidity and exhibiting good dynamic physical properties on molding as FRP and to provide FRP using the molding material SOLUTION: In the molding material, a chopped fiber bundle, wherein reinforcing fibers with a fiber length of 5-100 mm are aligned in one direction substantially and the number of filaments ranges from 10,000 to 700,000, is integrated with a matrix resin A ratio (Wm/tm) of a mean width Wm to a mean thickness tm of the chopped fiber bundle in the molding material ranges from 70 to 1,000, and the mean width Wm of the chopped fiber bundle is within 2-50 mm, while the mean thickness tm is within 002-01 mm COPYRIGHT: (C)2009,JPO&INPIT

Molding material, fiber-reinforced plastic, and manufacturing method for them

PROBLEM TO BE SOLVED: To provide an inexpensive forming method by which connection part strength and out-of-plane impact property can be enhanced by converting brittle failure behavior as a weak point to ductile failure while keeping high productivity which is a merit of a fiber-reinforced plastic comprising a discontinuous fiber and simultaneously the method dose not need preprocessing step in which a reinforcing metal must be machined into a final shape in advance up to now. SOLUTION: The manufacturing method of the composite member 5 of a metal sheet and a fiber-reinforced plastic has a step for heating, pressing and forming a fiber-reinforcing plastic base material 1 including the discontinuous reinforcing fiber and a resin in forming molds 2, and in this step, the metal sheet 4 having opening portions is arranged in at least a part of the forming molds, the metal sheet is deformed by the movement for closing the forming molds 2, and at the same time the metal sheet and the fiber reinforcing plastic is integrated. COPYRIGHT: (C)2007,JPO&INPIT

Forming method of composite member of metal sheet and fiber-reinforced plastic, and composite substrate of metal sheet and fiber-reinforced plastics base material used for the forming

PROBLEM TO BE SOLVED: To provide a test method capable of performing a lengthy bending fatigue test of a lightweight sandwich panel automatically with high reliability. SOLUTION: In this method, a bending fatigue test of the lightweight sandwich panel comprising a fiber reinforced plastic skin and a core having a lower specific gravity than the skin is performed by using three fulcrums or four fulcrums. The method is characterized by inserting an antislipping material between the sandwich panel and the fulcrums. COPYRIGHT: (C)2006,JPO&NCIPI

Masahiro Yamauchi

Papers

Carbon fiber bundle

Method for producing chopped fiber bundle and molding material, molding material, and fiber-reinforced plastic

Molding material, fiber-reinforced plastic, and manufacturing method for them

Forming method of composite member of metal sheet and fiber-reinforced plastic, and composite substrate of metal sheet and fiber-reinforced plastics base material used for the forming

Bending fatigue test method of lightweight sandwich panel