Cold Bend Test

Beyond mechanical flexibility, EPR demonstrates superior resistance to thermal aging compared to PVC alternatives. Spreader cables, hanging vertically in outdoor service, experience continuous UV radiation exposure along their entire suspended length. EPR compounds formulated for outdoor cable service incorporate carbon black and antioxidant additives that protect against UV-induced degradation, maintaining insulation integrity and mechanical properties over decades of exposure. The material also resists ozone attack, another common degradation mechanism for elastomeric materials in outdoor industrial environments where electrical equipment generates ozone as a byproduct of corona discharge and sparking.