ABSTRACT Under severe winter conditions, the stiffness of ethylene propylene diene monomer (EPDM) increases, degrading its damping performance. This study develops low‐temperature damping materials using ethylene butylene rubber (EBR). The low‐temperature properties of EPDM, EBR, and EBR/polybutadiene rubber (BR) blends were evaluated through temperature‐retraction (TR) tests, compression cold resistance (CsRC) tests, and stiffness measurements. Thermal and dynamic mechanical analyses characterized crystallization and glass transition. Results show EBR outperforms EPDM, with its low‐temperature properties further enhanced by blending with BR. An EBR/BR blend ratio of 90/10 achieved optimal performance: a TR10 of −56.9°C, a CsRC of 0.59 at −30°C, and a stiffness change rate of 35.4%, alongside excellent mechanical and aging resistance. This work confirms crystallization and glass transition as key factors in low‐temperature stiffening and provides a foundation for high‐performance damping materials in extreme cold.
He et al. (Sat,) studied this question.