Material Analysis
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Low Flexural Modulus of CMC
Problem Phenomenon
Flexural modulus of CMC products is <20% of the design value
Cause Analysis
CMC is soft with low modulus; filler addition is insufficient or interface is poor, not playing a reinforcing role; crystallinity is low
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 the key
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