Material Analysis
14 visualizações
PVA hardness too high
Fenómeno do problema
PVA product Shore hardness 5-10 degrees higher than target, hard to the touch
Análise das causas
PVA crystallinity on the high side, increased rigidity; too much filler added; cooling too fast, crystallization incomplete but rigidity frozen
Solução
1) Reduce cooling rate to make crystallization complete and reduce the hard feel; 2) Reduce filler addition; 3) Add plasticizer 0.5wt% to reduce hardness
Conclusão principal
High hardness is caused by crystallization and filler; adjusting cooling and filler are the key
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!