Molding Process
7 조회수
PVA hardness too low
문제 현상
PVA product Shore hardness 5-10 degrees lower than target, soft to the touch
원인 분석
PVA soft nature, low hardness; too much plasticizer or softener added; crystallinity on the low side
해결 방법
1) Add rigid filler 5-10wt% to increase hardness; 2) Reduce plasticizer amount; 3) Increase cooling rate to increase crystallinity
핵심 요약
Low hardness is caused by soft material and excessive plasticization; adding filler is the key
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