Production & Quality
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Poor EMA fatigue resistance
Problembeschreibung
EMA product fatigue life <10⁴ cycles, below the 10⁵ cycles requirement
Ursachenanalyse
EMA elastic recovery insufficient, accumulating plastic deformation each cycle; crosslinking degree too low with fast fatigue crack growth
Lösung
1) Increase crosslinking degree to improve recovery and reduce accumulated deformation; 2) Select high molecular weight grade to raise fatigue threshold; 3) Product design reduces stress concentration
Wichtigste Erkenntnis
Poor fatigue resistance is caused by insufficient recovery and fast crack growth; increasing crosslinking is key
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