Material Analysis
5 görüntüleme
PU hardness too high
Sorun Belirtisi
PU product Shore hardness 5-10 degrees higher than target, hard to touch
Neden Analizi
PU crystallinity too high, rigidity increased; too much filler added; cooling too fast, crystallization imperfect but rigidity frozen
Çözüm
1) Reduce cooling rate to make crystallization complete and reduce hardness feel; 2) Reduce filler addition; 3) Add plasticizer 0.5wt% to reduce hardness
Temel Çıkarım
High hardness is caused by crystallization and filler; adjusting cooling and filler are key
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