the production conditions of pure CNTs have been fixed at
reaction temperature 850 C, Hydrogen flow rate 300 ml/
min and reaction time 45 min. The diameters of the CNTs
were varied from 2 to 30 nm and the average length was at
70 lm.
The tensile strength
radically increases as the amount of CNTs concentration
increases. The general tendency is that the stress level is
increased by the addition of CNTs which play the role of
reinforcement