Ductile to Brittle Transition of Short Carbon Fiber-Reinforced Polypropylene Composites

Table 1

Properties of polypropylene (data from the manufacturer).

Properties	Unit	Value
Melt flow rate	g/10 min	3.1
Density	kg/m^3	905
Tensile strength (at 50 mm/min speed)	MPa	37
Strain at yield (at 50 mm/min speed)	%	10
Tensile modulus (at 1 mm/min speed)	MPa	1550
Notched Izod impact strength at 23°C	kJ/m^2	3.5