Material Analysis
9 views
EEA Hardness Too High
Problem Phenomenon
EEA product Shore hardness is 5-10 degrees higher than target, feels hard
Cause Analysis
EEA crystallinity high, rigidity increased; too much filler added; cooling too fast, crystallization imperfect but rigidity frozen
Solution
1) Reduce cooling rate to make crystallization complete and reduce hardness feel; 2) Reduce filler addition; 3) Add 0.5wt% plasticizer to reduce hardness
Key Takeaway
High hardness is caused by crystallization and filler; adjusting cooling and filler are key
Was this helpful?
0 people found this helpful
Thank you for your feedback!