Material Analysis 14 조회수

Low flexural modulus of PU

문제 현상

PU product flexural modulus <20% of design value

원인 분석

PU soft, low modulus; filler addition insufficient or poor interface, no reinforcing effect; crystallinity too low

해결 방법

1) Add 10-15wt% rigid filler to increase modulus; 2) Nucleating agent to increase crystallinity; 3) Select high modulus grade

핵심 요약

Low flexural modulus is caused by material softness and insufficient filler; adding rigid filler is key

PU flexural modulus rigid filler nucleating agent crystallinity

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