Molding Process
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Low-temperature brittleness of PMMA products
Fenómeno do problema
PMMA impact strength drops greatly at low temperatures and becomes brittle.
Análise das causas
PMMA β transition temperature is about 20-40°C; at low temperatures, molecular chain segment motion is restricted and embrittlement is aggravated.
Solução
Use toughened grade PMMA; avoid notches and sharp corners in product design.
Conclusão principal
PMMA is limited in low-temperature applications.
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