Material Analysis
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PPS Inherent Flame Retardancy Advantage
Problem Phenomenon
Electronic and electrical parts made of other materials require flame retardants; after switching to PPS, they naturally pass flame retardancy certification
Cause Analysis
PPS molecules contain sulfur, with a high oxygen index and natural self-extinguishing; it reaches UL94 V-0 without adding flame retardants; non-dripping and low smoke, it is an ideal material for electrical safety
Solution
①Prioritize evaluating PPS for flame-retardant requirement scenarios; ②Being flame-retardant-free avoids precipitation and performance loss; ③Select special grades for high tracking resistance requirements; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Inherent flame retardancy is PPS's core competitiveness; being flame-retardant-free means purer performance and less precipitation; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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