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 interac- tion between graphite and the rubber matrix. Different modification formulas have great effect on the existence of corresponding graphite