Temperature cycling cracking

Problembeschreibung

Cracks appear after repeated cold-hot cycles

Ursachenanalyse

Large difference in thermal expansion coefficient, ECTFE about 100, steel 12×10-6

Lösung

Select flexible primer with 300-500 modulus

Wichtigste Erkenntnis

Thermal expansion mismatch is the root cause

ECTFEtemperature cycling

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