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Decreased Low-Temperature Impact Strength of PC
Problembeschreibung
The impact strength of PC decreases significantly at low temperatures (below -20°C).
Ursachenanalyse
PC has a tendency to low-temperature embrittlement; although the Tg is about 150°C, the secondary relaxation is in the low-temperature region.
Lösung
Use a low-temperature toughened PC grade; avoid notches and sharp corners in the design.
Wichtigste Erkenntnis
PC low-temperature impact also has limitations.
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