Material Analysis
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EVA flexural modulus is low
Problem Phenomenon
EVA product flexural modulus is 20% below the design value
Cause Analysis
EVA is soft with low modulus; insufficient filler addition or poor interface not playing a reinforcing role; low crystallinity
Solution
1) Add 10-15wt% rigid filler to increase modulus; 2) Nucleating agent to increase crystallinity; 3) Select high modulus grade
Key Takeaway
Low flexural modulus is caused by material softness and insufficient filler; adding rigid filler is key
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