Molding Process
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Low-Temperature Impact of PCTG Products
Fenómeno do problema
The products become brittle at low temperatures (below -20°C) and are easily broken by impact.
Análise das causas
Although PCTG has good low-temperature toughness, the movement of molecular chains is restricted in extreme cold and there is still a tendency to embrittle.
Solução
Use toughened grades; avoid notches and sharp corners in product design; reduce internal stress.
Conclusão principal
The low-temperature toughness of PCTG needs to be evaluated for the specific use temperature.
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