Material Analysis
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PPO Electrical Performance Fluctuation of Electronic Parts
Problembeschreibung
In testing of PPO electrical insulating parts, dielectric performance fluctuates between batches, high-frequency application losses exceed standards, and the same process performs differently across batches.
Ursachenanalyse
PPO's dielectric constant and loss are the smallest among engineering plastics and are little affected by temperature and humidity, but material batch differences and processing heat history still affect consistency; impurity contamination changes dielectric characteristics.
Lösung
①Raw material batch inspection and traceability; ②control processing heat history to be stable; ③prevent impurity contamination; ④batch sampling of electrical performance and correlation analysis with the process.; After adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Wichtigste Erkenntnis
PPO's electrical performance advantages need process consistency support; batch traceability is the quality foundation of high-frequency applications; contamination prevention and control runs through the whole process.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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