Processing Machinery
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PPO Conductive Shielding Grade Application
Problem Phenomenon
【Problem Phenomenon】Electronic equipment needs structural components with conductivity or electromagnetic shielding
Cause Analysis
PPO has dedicated conductive grades (HMC3008, NC series, DSN-300I/400I/500I) for conductivity and electromagnetic wave shielding; UL94 V-1 flame retardancy is maintained
Solution
Select dedicated conductive grades for conductive shielding parts; measure shielding effectiveness according to frequency band; grounding design coordinates with conductive paths; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
PPO conductive grades make EMI shielding, integrating structure and function; 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 subsequent similar problems
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