Molding Process
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Stress cracking of PMMA products
Problem Phenomenon
Silver streak-like cracks appear in products during use.
Cause Analysis
PMMA is brittle and stress-sensitive, molding internal stress is large, and silver streaks and cracking occur when contacting solvents or subjected to external force.
Solution
Increase mold temperature 70-90°C; annealing treatment 80-90°C/2-4h; avoid contact with solvents.
Key Takeaway
PMMA stress cracking is the core issue of application safety.
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