Extrusion & Post
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PETG '2079851475616104452 heat deflection temperature test value low
Problembeschreibung
The product heat deflection temperature HDT test is lower than the nominal value, and heat resistance performance is poor.
Ursachenanalyse
Large internal stress reduces HDT test performance, annealing insufficient, test condition deviation.
Lösung
Fully anneal to eliminate internal stress; execute according to standard test conditions; use high heat-resistant grades.
Wichtigste Erkenntnis
PETG HDT is affected by internal stress; annealing can increase the test value.
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