| 摘要 |
PROBLEM TO BE SOLVED: To prevent the generation of cracks in the circumferential direction even at high-speed revolution and to improve the balance between strength and elongation in the radial direction by constituting fiber reinforced plastic from a resin composition containing polyepoxide, a curing agent, and dimer acid type polyamide as indispensable components and reinforcing fibers. SOLUTION: In a fly wheel formed from fiber reinforced plastic, the reinforced plastic is constituted from a resin composition containing polyepoxide, a curing agent, and dimer acid type polyamide having not more than 5×10<-4> mole equivalent of terminal group concentration per 1g of the polyamide as indispensable components and reinforcing fibers. A method for producing the fly wheel is not limited particularly if it is within a range of a general molding method for fiber reinforced plastic; however, in consideration of the strict control of fiber orientation in a molding, uniform impregnation with a resin, etc., usually a filament winding method is employed preferably. |
