Material Analysis
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Performance Degradation of PBT in Microwave Environments
Problem Phenomenon
PBT electrical components degrade in performance after long-term use in microwave or high-frequency electromagnetic fields.
Cause Analysis
PBT degrades under the action of high temperature, high humidity, and electric fields, and the dielectric properties decline, which is more obvious especially when halogen-containing flame retardants are used.
Solution
Select high-purity PBT raw materials; control the type and dosage of flame retardants; consider derated use during design.
Key Takeaway
Attention needs to be paid to the long-term stability of PBT in electric field environments.
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