Accelerated aging of EPDM and butyl elastomers

Technical Report · Sat Jun 01 00:00:00 EDT 1996

DOI:https://doi.org/10.2172/243447· OSTI ID:243447

Wilson, M H

This study was composed of three parts: a post cure study to optimize final properties of an ethylene-propylene-diene (EPDM) formulation, an accelerated aging study to compare the stress relaxation behavior of a butyl and an EPDM elastomer under compression, and a cursory evaluation of a new 70 Shore A EPDM. The optimum postcure for the EPDM was found to be 2 to 4 hours at 182{degrees}C in a vacuum. The EPDM was also shown to have superior aging characteristics compared to the butyl and is recommended for use instead of the butyl material. The physical properties for new 70 Shore A EPDM are satisfactory, and the stress relaxation behavior was only slightly inferior to the other EPDM.

• Research Organization: Allied-Signal Aerospace Co., Kansas City, MO (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-76DP00613
• OSTI ID: 243447
• Report Number(s): KCP-613-5806; ON: DE96011923
• Resource Relation: Other Information: PBD: Jun 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES
ELASTOMERS
AGING
MATERIALS TESTING
ETHYLENE PROPYLENE DIENE POLYMERS
PROGRESS REPORT
HARDNESS
TENSILE PROPERTIES
ELONGATION
COMPRESSION STRENGTH