Material Analysis
2 views
ASA antistatic failure
Problem Phenomenon
ASA electronic housing antistatic requirements not met, surface resistivity exceeds the standard, and product impact strength decreases after adding antistatic agent.
Cause Analysis
ASA itself is insulating, antistatic relies on adding migratory additives or conductive fillers; migratory additives are affected by humidity and their effect fluctuates; conductive fillers destroy rubber phase toughness and affect appearance.
Solution
①Select antistatic system according to use environment humidity; ②balance test of antistatic agent and toughness determines addition amount; ③dual indicator acceptance of surface resistance and impact strength; ④evaluate conductive coating solutions for high-requirement occasions.
Key Takeaway
ASA antistatic modification is a trade-off between resistance and toughness; humidity dependence must be verified in the target environment; conductive coating can avoid substrate performance loss.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
Was this helpful?
0 people found this helpful
Thank you for your feedback!