INCISED PREPREG SUBSTRATE, PREPREG LAYERED PRODUCT, AND FIBER-REINFORCED PLASTIC

PROBLEM TO BE SOLVED: To provide a prepreg substrate having sufficient flowability and molding followability of a complex shape and exhibiting excellent dynamic physical property applicable to a structure material, low ununiformness property and excellent dimension stability when it is made to a fiber-reinforced plastic, a layered product of the prepreg substrate, and a fiber-reinforced plastic obtained by solidifying the layered product. SOLUTION: A plurality of intermittent incised parts are inserted to the whole surface of the prepreg substrate comprising a carbon fiber aligned in one direction and a matrix resin containing a thermosetting resin as a main component with a predetermined angle and projection length in a direction crossing the carbon fiber. The incised prepreg substrate is divided such that all carbon fibers become substantially the predetermined carbon fiber length by the incised parts. The incised prepreg substrate is provided with the predetermined CAI strength, dent depth and tensile strength. COPYRIGHT: (C)2010,JPO&INPIT