Material Drying
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PEI Hydrolysis Stability Verification
Fenómeno del problema
Performance tracking of PEI after boiling water or high-humidity environment applications; although hydrolytically stable, boundaries still need verification.
Análisis de la causa
PEI has excellent hydrolysis stability, retaining 85% of tensile strength after 10000 hours of boiling water immersion; but long-term humidity and heat still accumulate; processing quality affects performance; application boundaries need data.
Solución
①Verify humidity-heat aging according to actual working conditions; ②processing quality ensures initial performance; ③collect long-term performance data; ④set application boundaries based on data.; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Conclusión clave
PEI hydrolysis stability is supported by ten-thousand-hour data; but boundary verification is still necessary; data accumulation optimizes applications.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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