Production & Quality
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PMMA Temperature Use Range
Problem Phenomenon
PMMA parts become brittle in cold outdoors, and soften and deform in high-temperature environments
Cause Analysis
PMMA maintains rigid shape below 160°F (about 71℃); below 32°F and above 100°F sheets may become hazy, recovering between 60-80°F; the applicable temperature range has clear boundaries
Solution
①Control use temperature within the -18℃ to 71℃ range; ②evaluate alternative materials for out-of-range applications; ③verify in temperature cycling scenarios; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability.
Key Takeaway
The PMMA temperature window is about -18 to 71℃; applications outside the boundary must be rejected or verified at the material selection stage; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.
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