Molding Process
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CEF hardness too low
Problem Phenomenon
The Shore hardness of the CEF product is 5-10 degrees lower than the target and feels soft
Cause Analysis
The soft nature of CEF has low hardness; too much plasticizer or softener is added; the crystallinity is low
Solution
1) Add rigid filler 5-10wt% to increase hardness; 2) Reduce the amount of plasticizer; 3) Increase the cooling rate to increase the crystallinity
Key Takeaway
Low hardness is caused by the softness of the material and excessive plasticization; adding fillers is the key
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