Material Analysis
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Aging of PBT products in automobile engine compartments
Problem Phenomenon
PBT parts age and fail rapidly in the engine compartment (high temperature + oil + vibration) environment.
Cause Analysis
High temperature (>120°C) + engine oil + vibration multi-factor coupling accelerates degradation and fatigue, and the antioxidant is consumed and exhausted.
Solution
Select PBT grades with high-temperature-resistant antioxidant systems; consider stress relaxation and creep in product design; conduct engine compartment environment simulation tests.
Key Takeaway
PBT applications in automobile engine compartments require targeted formulation design.
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