Molding Process
3 Aufrufe
Shrinkage and bubbles of PMMA cast sheets
Problembeschreibung
Cast PMMA sheets show uneven thickness and bubbles.
Ursachenanalyse
During casting, monomer MMA polymerization shrinkage is large and reaction exotherm produces bubbles; temperature control improper.
Lösung
Precisely control casting polymerization temperature; use pressurized and depressurized casting process; fully degas.
Wichtigste Erkenntnis
The quality of PMMA cast sheets depends on polymerization process control.
War das hilfreich?
0 Personen fanden dies hilfreich
Vielen Dank für Ihr Feedback!