3.5. Mechanical performance
The mechanical performance of graphite filled NR composites is
shown in Fig. 4. Coating graphite with polyacrylate, the mechanical
performance is improved. The tensile strength, tear strength,
modulus at 100% elongation and modulus at 300% elongation are
increased. The mechanical performance of 7# is the best, followed
by 5#, 3# and 8#.
The better mechanical performance is probably due to the good
distribution of the filler in the rubber matrix and the improved interaction
between graphite and the rubber matrix. Different modification
formulas have great effect on the existence of corresponding graphite