Effect of temperature and pressure on carbon black reinforcement

Interactions between carbon black and polymer are one of the most important mechanisms of carbon black reinforcement, often measured as bound rubber. The influence of pressure and temperature on bound rubber have been investi gated for a low cis-1,4,-polybutadiene filled with 45 phr N220 carbon black . It was demonstrated that elevated pressure and temperature increases the amount of bound rubber, and also the gravimetric density of the samples. Th is shows that polymer can penetrate carbon black to a greater extent if tem perature and pressure are increased. PRCPA/1500 (C) 1998 The Institute of M aterials.