Material Analysis
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Obvious change in melt fluidity of modified styrene-butadiene copolymer (better or worse
Problem Phenomenon
The melt fluidity of modified styrene-butadiene copolymer changes obviously (better or worse), affecting the processing window
Cause Analysis
Added additives change melt viscosity
Excessive addition amount causes excessive fluidity change
Uneven additive dispersion causes local viscosity fluctuation
Processing temperature does not match the modified material
Lubricant addition is improper
Solution
Adjust processing parameters to match the modified fluidity
Reasonably control additive addition amount
Ensure uniform additive dispersion
Adjust temperature according to the modified material
Use lubricants reasonably
Key Takeaway
Fluidity change requires adjusting the process to match the modified material
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