Environmental Stress Cracking as a Limiting Factor in Recycled HIPS Performance

This poster investigates the environmental stress cracking resistance of virgin/recycled HIPS layer arrangements exposed to oil. FTIR and tensile testing were used for material characterization, while creep-rupture testing under constant stress was applied to evaluate long-term ESCR performance. The results show that layer arrangement strongly influences failure lifetime, highlighting the importance of identifying a sufficient virgin surface-layer thickness for recycled HIPS structures.