ABSTRACT
EPDM is the designation agreed upon by ASTM and IISRP for ethylene-propylene rubber, where "E" and "P" stand for ethylene and propylene, respectively. "D" designates the nonconjugated diene that provides a site of unsaturation for sulfur vulcanization, and "M" refers to the polymethylene saturated backbone of the polymer, i.e., CHr(CH2 )n-CH2 (Fig. 1). Several good reviews on EPDM rubber have been published by Baldwin and Ver Strate (1972), Ver Strate ( 1986), and Allen and Easterbrook ( 1987).
