To provide a method of producing a carbon fiber-reinforced composite material capable of shortening production time by promptly diffusing resin when the resin is filled and impregnated in a direction orthogonal to a reinforced fiber base material in a VaRTM method using a unidirectional fiber base material and achieving excellent quality.
In a method of producing a carbon fiber-reinforced composite material, in approximation by the following formula (1) when viscosity of a liquid resin composition is defined as ηR (mPa s) and an impregnation distance for which the liquid resin composition is impregnated in a unidirectional reinforced fiber base material at time t (min) is defined as L (mm) to achieve an approximately parallel flow from a direction orthogonal to a longitudinal direction of reinforced fibers constituting the unidirectional reinforced fiber base material, in a condition satisfying the following formula (2), the liquid resin composition is filled.
YOSHIDA KEIGO
ITO TOSHIYUKI
TATEGAKI YASUSHI
TAKANO TSUNEO
