Patent ID: 11951692
Assignee: MITSUBISHI CHEMICAL CORPORATION
Field: Measurement (Instruments)
Classification: CPC B  C  G  Y | IPC B  C  G

Claim 1:
2. The sheet-shaped fiber-reinforced resin material according to claim 1,
wherein a square molded plate is obtainable by molding from the sheet-shaped fiber-reinforced material by a process comprising stacking two square sheets cut from the sheet-shaped fiber-reinforced material so that conveying directions (MD directions) during manufacture of the two square sheets are the same and heating and pressing the stacked two square sheets in a panel forming mold under conditions of 140° C., 8 MPa, and 5 minutes, the square molded plate satisfying (i) and (ii) below, with the proviso that a direction along the longitudinal direction of the sheet-shaped fiber-reinforced material is defined as a first direction and a direction along the width direction of the sheet-shaped fiber-reinforced material is defined as a second direction:
(i) a ratio of a flexural modulus [GPa] along the first direction to a flexural modulus [GPa] along the second direction is in a range of 0.8 to 1.2, and
(ii) a coefficient of variation (CV) [%] of a bending modulus of elasticity along the first direction and a coefficient of variation (CV) [%] of a bending modulus of elasticity along the second direction are both in a range of 5 to 15.