Processing Machinery
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MBS core-shell structure destroyed during processing
Problem Phenomenon
MBS core-shell structure is destroyed during processing, and the toughening effect is completely lost
Cause Analysis
Processing temperature too high, exceeding the 180-220°C upper limit, causing rubber core melting
Excessive screw shear destroys the core-shell interface
Mixing time too long, core-shell structure repeatedly stressed and destroyed
Screw compression ratio too large
Improper MBS model selection, fragile core-shell structure
Solution
Strictly control processing temperature not exceeding the 180-220°C upper limit
Reduce screw rotation speed to reduce shear
Shorten mixing time
Select a low compression ratio screw
Select MBS models with stable core-shell structure
Key Takeaway
MBS core-shell structure needs gentle processing conditions for protection
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