With the help of mechanical mixing method such as Banbury mixer and open 2 roll mill, ethylene propylene diene terpolymer (EPDM) was blended with the chloroprene rubber (CR) then mechanical properties and ozone resistance test of blends were subsequently investigated. It was noted that the hardness increased with an increasing of CR contents. Generally the hardness was increased with heat aging time most likely due to the post cure. In ozone resistance test of blend, after 8 hours a portion of fine crack is obtained for pure CR. It is confirmed that ozone resistance is greatly improved by addition of 25wt% EPDM to CR.

• 민성기(부경대학교 응용화학공학부) | Seong Kee Min
• 이원기(부경대학교 응용화학공학부) | Won Kee Lee
• 박예진(부경대학교 응용화학공학부) | Ye Jin Park
• 현중원(부경대학교 응용화학공학부) | Joong Won Hyun
• 박찬영(부경대학교 응용화학공학부) | Chan Young Park Corresponding Author