Abstract:
This research concentrated on the detailed interaction of rubber-filler interaction usingcarbon black (CB) and oxidized carbon black (OX-CB) and properties of vulcanizate usingrubbers having different polarity, e.g., natural rubber (NR), nitrile rubber (NBR) and acrylicrubber (ACM). The influence of the concentration of functional groups on carbon black surfaceon carbon black-rubber interaction was studied. It was found that the increase of rubberfillerinteraction was partly due to the increase of oxygen containing in various functional groups.In addition, the increase of the extent of interaction depends not only hctionality content andtype of carbon black but also the nature of rubber molecules. Torque values, which were causedby rubberfiller, rubberrubber and fillerfiller interactions were determined. The torque valuesof CB/ACM composites were found to be obviously higher than those of OX-CB/ACMcomposites, though they had lower bound rubber values in contrast to those of CB/NR andCB/NBR composites. As a result, it brings about the understanding that there are some relationsbetween rubberrubber interaction and rubber-filler interaction in which stronger molecularinteraction among ACM molecules reduced ACM rubber-filler interaction (bound rubbercontent). The processibility study was carried out through measurements of tan 6 values. Theease of the processing of rubber composites of OX-CB/ACM was found to be higher degree thanOX-CB/NBR and OX-CB/NR composites, respectively. While, CBMBR composite was foundto give easier processing than CB/NR and CB/ACM composites, respectively. In general,mechanical properties of NR vulcanizate were better than those of ACM vulcanizate, but ACMvulcanizate had better aging resistance towards heat, solvent and motor oil than NR vulcanizate.