| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a wooden bat with practically sufficient durability/strength as a bat and excellent restitutive performance, capable of exhibiting excellent hitting feel. <P>SOLUTION: Epoxy resin whose viscosity is 50 cps is prepared as synthetic resin 4, and carbon nano-fiber with such properties that the mean fiber diameter is 150 nm, the mean fiber length is 15μm, the aspect ratio (the mean fiber length/the mean fiber diameter) is 100, the specific surface area is 13 m<SP>2</SP>/g, and the heat conductivity at the temperature of 15°C is 1500 W/(mK), is mixed in the synthetic resin as micro-carbon fiber 5 at a rate of 1 mass % to obtain a synthetic resin material. The obtained synthetic resin material is impregnated into a hitting area of a wooden bat body 2, and after that, the impregnated part is compression-molded to form the wooden bat. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
