Material Analysis
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EEA Large Creep Deformation
Problem Phenomenon
EEA product creep >5% under long-term load, exceeding the 2% requirement
Cause Analysis
EEA elastomer nature has large creep; molecular weight low, creep resistance poor; not crosslinked, large plastic flow
Solution
1) Select high-molecular-weight grades; 2) Slightly crosslink with 0.3wt% DCP to reduce plastic flow; 3) Add rigid fillers to reduce creep
Key Takeaway
Large creep is caused by the elastomer nature; slight crosslinking and rigid fillers are key
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