The objective of this study is to address the replacement of up to 30 parts of EPDM with SBR to reduce
the cost of finished products and to improve selected blend properties
using more efficient cure systems.
Effects of sulfur, peroxide, and coagent
curing systems on blend properties
were studied. It was found
that the addition of a small amounts
of sulfur as a coagent to the peroxide
cure system in EPDM/SBR compounds
remarkably improved mechanical
properties of the blends.
Important compound properties including:
mechanical properties,
compression set, heat aging, and
ozone resistance of the EPDM/SBR
blends are also compared with
those of EPDM compounds.