In the silica-filled system, the effect of nano-ZnO
on the cure characteristics and mechanical properties
were compared with that of the unfilled system. The
Tmin and Tmax values were increased by the increase
in the viscosity of the silica-filled compounds. t10
and t90 significantly decreased because of the heat
conduction of the fillers. rb, E100, E300, and tear
strength were greatly improved. This was mainly
because of the effects of strain amplification18 and
hysteresis of the vulcanizates by the inclusion of
silica fillers.