Material Drying
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PMMA Small-Batch Drying
Problem Phenomenon
Drying results for small amounts of PMMA in laboratory ovens are unstable
Cause Analysis
Small-batch spreading and ambient humidity affect drying consistency; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience; this mechanism has been repeatedly verified by industry literature and should be confirmed first during troubleshooting
Solution
Small-scale trials in a vacuum oven at 80℃×4 hours; spread in thin layers; record conditions; after adjustment, take samples continuously to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes to facilitate locating effective measures
Key Takeaway
Standardization of small-scale drying ensures comparability of optical tests; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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