| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a prepreg having high basis weight, which has excellent handleability, an excellent impregnated state, high productivity, and high basis weight of a reinforcing fiber.SOLUTION: The prepreg is obtained by impregnating a reinforcing base material comprising the reinforcing fiber with a thermosetting matrix resin and has 300-2,000 g/mfiber basis weight. The reinforcing fiber is a carbon fiber having 1.0-2.4 dtex average single fiber fineness. It is preferable that the reinforcing fiber is such the carbon fiber that a shape of the cross section perpendicular to the fiber axis of the single fiber has 0.7-0.9 roundness and the diameter Di of the cross section is 8-20μm. It is also preferable that the matrix resin is a thermosetting resin having 1,000-1,000,000 Pa-s viscosity at 30°C.</p> |
