Material Drying
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PP Hydrolysis Resistance and Hot Water
Fenómeno del problema
【Problem Phenomenon】Evaluation of long-term use of PP in humid heat and hot water environments
Análisis de la causa
PP has excellent hydrolysis resistance and does not absorb water, and maintains good performance in hot water environments; long-term high-temperature hot water requires selecting heat-resistant grades for verification; during on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience
Solución
PP is suitable for humid heat and hot water parts; select heat-resistant grades for long-term high temperature; aging verification; after adjustment, take continuous samples 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
Conclusión clave
PP has excellent hydrolysis resistance, use it with confidence for hot water parts; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the future
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