| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheet molding compound (SMC) inexpensive and excellent in terms of practicality.SOLUTION: In a sheet molding compound comprising carbon fibers, glass fibers, and a resin composition, the volume content of fiber reinforcements combining the carbon fibers and glass fibers is confined to a range of 35-55%. The ratio of the total volume of carbon fiber tows with respect to the total volume of glass fiber strands is 45/55-80/20. Lengths and unit weights of the carbon fibers are respectively 5-60 mm and 50-1600 mg/m. Lengths and unit weights of the glass fibers are respectively 5-60 mm and 40-1000 mg/m. The volume ratio of a single carbon fiber tow with respect to a single glass fiber strand (carbon fiber tow unit volume/glass fiber strand unit volume) is 10 or below. |
