Material Analysis
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CMC Hardness Too High
Fenómeno del problema
Shore hardness of CMC products is 5-10 degrees higher than the target, feeling hard
Análisis de la causa
CMC crystallinity is high and rigidity increases; too much filler added; cooling is too fast, crystallization is imperfect but rigidity is frozen in
Solución
1)Reduce cooling rate to perfect crystallization and reduce hard feel; 2)Reduce filler addition; 3)Add plasticizer 0.5wt% to reduce hardness
Conclusión clave
High hardness is caused by crystallization and filler; adjusting cooling and filler are the key
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