Material Analysis 11 조회수

EMA hardness too high

문제 현상

EMA product Shore hardness 5-10 degrees higher than target, feeling hard

원인 분석

EMA crystallinity too high increasing rigidity; too much filler added; cooling too fast with incomplete crystallization but rigidity frozen

해결 방법

1) Reduce cooling rate to complete crystallization and reduce hard feel; 2) Reduce filler addition; 3) Add plasticizer 0.5wt% to lower hardness

핵심 요약

High hardness is caused by crystallization and filler; adjusting cooling and filler is key

EMA hardness too high crystallinity filler amount plasticizer

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