Molding Process
4 조회수
Shrinkage and bubbles of PMMA cast sheets
문제 현상
Cast PMMA sheets show uneven thickness and bubbles.
원인 분석
During casting, monomer MMA polymerization shrinkage is large and reaction exotherm produces bubbles; temperature control improper.
해결 방법
Precisely control casting polymerization temperature; use pressurized and depressurized casting process; fully degas.
핵심 요약
The quality of PMMA cast sheets depends on polymerization process control.
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