Production & Quality
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Products becoming brittle at low temperature
Problem Phenomenon
The product obviously becomes brittle and breaks in low-temperature environments (such as -20°C)
Cause Analysis
The service temperature is below the material's embrittlement temperature; the Tg of the toughening phase (rubber phase) is higher than the service temperature, losing the toughening effect; the product has stress concentration design
Solution
Select toughening components with lower Tg; optimize product design to reduce stress concentration; add low-temperature impact modifiers
Key Takeaway
Low-temperature toughness is an important consideration for outdoor and cold-region applications
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