| 摘要 |
PROBLEM TO BE SOLVED: To suppress occurrence of cracks around a thickness direction yarn.SOLUTION: Carbon nanotubes 33 having a coefficient of linear expansion smaller than that of a matrix resin 32 are filled between a thickness direction yarn 12 and each reinforcing fiber bundle layers 11a, 11b, 11c, 11d adjacent to the thickness direction yarn 12 and in the matrix resin 32 impregnated in gaps 21, 22 formed between portions where the thickness direction yarn 12 expands in mutually opposite directions. Then, an upper limit of volume fraction of the carbon nanotubes 33 in the matrix resin 32 is set to 74%×(1-volume shrinkage of resin) in an uncured state of resin. |
