The thermal conductivity of modified and unmodified graphite filled
NR composites is shown in Fig. 3. It is observed that the thermal conductivity
of graphite filled rubber composites is three orders of magnitude
below that of the isolated graphite. With modified graphite filling, the
thermal conductivity increases. The maximumvalue of thermal conductivity
reaches 0.569 W·m−1·K−1. The thermal conductivity of all the
samples except 4# is not less than 0.54 W·m−1·K−1. Adopting
polyacrylate coating graphite makes the thermal conductivity increase
by 8.61% to 19.54%.