Extrusion & Post
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Poor melt flowability of MBS-modified PVC
Fenómeno del problema
Melt flowability of MBS-modified PVC is poor, extrusion or injection is difficult, and processing efficiency is low
Análisis de la causa
Excessive MBS addition increases melt viscosity
Processing temperature too low, below the 180-220°C lower limit
Insufficient PVC/MBS compatibility, uneven melt
Lubricant system mismatch
Screw design not suitable for PVC/MBS blending
Solución
Reasonably control MBS addition amount
Appropriately increase processing temperature to the 180-220°C range
Select MBS models with good compatibility
Optimize the lubricant system
Use a screw design suitable for PVC
Conclusión clave
MBS-modified PVC flowability needs ratio and lubrication optimization
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