Molds & Tooling
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Corrosion Problem During Processing of PBT Flame-Retardant Material
Problem Phenomenon
Halogen-containing flame-retardant PBT corrodes molds and equipment during processing.
Cause Analysis
The halogen flame retardant partially decomposes at high temperature to produce acidic gases (HBr, etc.), which are corrosive to mold steel.
Solution
Use corrosion-resistant mold steel or stainless steel molds; clean the mold in time after processing; use a halogen-free flame retardant system.
Key Takeaway
PBT flame-retardant material corrosion requires equipment and mold protection.
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