Production & Quality
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Stress cracking of EAA
Problem Phenomenon
The cracking time of EAA products under the action of stress + chemicals is <100h
Cause Analysis
Under stress, the molecular chains of EAA are attacked by chemicals at an accelerated rate; 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 EAA 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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