Molding Process 5 views

POE toughened PP chemical resistance drops

Problem Phenomenon

POE toughened PP gasoline immersion swelling >5%

Cause Analysis

POE elastomer high affinity to hydrocarbon solvents, polyolefin nature

Solution

1) POE reduced to 5-8wt%; 2) DCP slight crosslinking to reduce swelling; 3) POE-g-MAH to reduce continuous phase

Key Takeaway

Chemical resistance drop is caused by polyolefin solvent affinity

POE toughened PPchemical resistancehydrocarbon solventslight crosslinkingPOE-g-MAH

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