Molding Process
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POE/PP dynamic crosslinking crosslinking degree insufficient
Problem Phenomenon
POE/PP TPV crosslinking degree 40%, less than 70%, compression set >50%
Cause Analysis
DCP<0.5wt%; crosslinking temperature <170°C; TAIC missing
Solution
1) DCP 0.8-1.2wt%; 2) Temperature 180-190°C; 3) Increase shear; 4) TAIC 0.3-0.5wt%
Key Takeaway
TPV crosslinking degree insufficient; optimize DCP/TAIC and shear
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