Material Analysis
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DSTDP large creep deformation
Problem Phenomenon
DSTDP product creep under long-term load >5%, exceeding the 2% requirement
Cause Analysis
DSTDP elastomer nature, creep large; molecular weight on the low side, creep resistance poor; not crosslinked, plastic flow large
Solution
1) Select high molecular weight grades; 2) slight crosslinking 0.3wt% DCP to reduce plastic flow; 3) add rigid filler to reduce creep
Key Takeaway
Large creep is caused by elastomer nature; slight crosslinking and rigid filler are key
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