Production & Quality
9 views
EVA fatigue resistance is poor
Problem Phenomenon
EVA product fatigue life <10⁴ cycles, below the 10⁵ cycle requirement
Cause Analysis
EVA elastic recovery insufficient, accumulating plastic deformation each cycle; crosslinking degree too low with fast fatigue crack propagation
Solution
1) Increase crosslinking degree to improve recovery and reduce accumulated deformation; 2) Select high molecular weight grade to raise the fatigue threshold; 3) Product design to reduce stress concentration
Key Takeaway
Poor fatigue resistance is caused by insufficient recovery and fast crack propagation; increasing crosslinking is key
Was this helpful?
0 people found this helpful
Thank you for your feedback!