PMMA Regrind Problems

Problembeschreibung

Regrind parts have poor transparency and are brittle.

Ursachenanalyse

Regrind thermal history + moisture absorption; fine powder from crushed material.

Lösung

①Ratio ≤20%; ②Re-dry; ③Optical parts prohibit regrind.

Wichtigste Erkenntnis

PMMA regrind = prohibited in transparent parts.

PMMA; regrind; transparency; embrittlement

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