Mechanical Properties and Electrical Conductivity of Conductive Carbon Black/NR Composites

With NR as matrix,T60,T80 and acetylene black as fillers and N330 as reference object,the mechanical properties of conductive carbon black filled NR and its influence on that of NR were studied.The results show that conductive carbon black filled NR rubber is reinforced in property,its tensile strength,elongation at break and tear strength equal to or exceed the performance of N330 carbon black filled rubber;its hardness is higher than that of the N330 carbon black filled rubber.The conductivity of conductive carbon black/NR composite mainly depends on the surface property,structure and content of conductive carbon black and the electrical conductivity of conductive carbon black in polymer.