Production & Quality
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CEF stress cracking
Problem Phenomenon
The CEF product cracks under stress + chemicals within <100h
Cause Analysis
The molecular chains of CEF under stress are attacked and accelerated by chemicals; environmental stress cracking is a typical failure mode of polyolefins
Solution
1) Reduce the internal stress of the product by annealing treatment; 2) Select high-molecular-weight CEF to improve ESC resistance; 3) Avoid contact with aggressive chemicals
Key Takeaway
Stress cracking is caused by stress-accelerated chemical attack; annealing and high MW are the key
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