Synergetic Effects of Mechanical Properties on Graphene Nanoplatelet and Multiwalled Carbon Nanotube Hybrids Reinforced Epoxy/Carbon Fiber Composites

Table 2

Mechanical properties of CNTs/GNPs/CFRP composite laminates.

Test item (unit)	CNTs/GNPs hybrids content (wt%)  CNTs : GNPs = 1 : 9
	0	0.5	1.0	1.5
FS (MPa)	580.6	624.8 (+7.6%)	682.1 (+17.5%)	633.8 (+9.2%)
FM (GPa)	31.3	33.4 (+6.8%)	33.7 (+7.7%)	34.4 (+10.0%)
ILSS (MPa)	54.6	76.1 (+39.3%)	76.5 (+40.0%)	72.5 (+32.7%)
(J/m^2)	468.9	648.7 (+38.3%)	866.8 (+84.9%)	938.0 (+100%)

FS: flexural strength, FM: flexural modulus, and ILSS: interlaminar shearing strength. : initial fracture toughness .