Aim of this Reasch to Study Some Physical and Mechanical Properties of rubber
such as( the Electrical conductivity ,hardness,tensile strength at break,Modulus of
elasticity at elon.300%,Elon.at break,Torque,Scorch time(Ts2)) for taypes of rubber
for example natural rubber (NR) and industrial rubber (butadiene-BR) by using
conductive carbon black with addition
Loading level (10,20,30,40,50 pphr) from conductive carbon type( N375) . also using
fixed quantities from (CaCO3) and metals oxides e.g ( Fe2O3) and ( ZnO) are not
effecting on mechanical properties for final product where giving the experimental
results that improvement of electrical conductivity and mechanical properties for
Natural rubber(NR) more than of thes properties in industrial rubber(butadiene- BR)
as same as for loading level of conductive carbon