Injection Molding
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Fluidity decline of PET modified material
Problem Phenomenon
After adding fillers (glass fiber, mineral powder) or flame retardants to PET, MFI decreases significantly and '2079851475616104452 is difficult.
Cause Analysis
Rigid fillers increase melt viscosity (particle-particle and particle-molecular chain friction); fillers are not surface-treated.
Solution
Use silane coupling agents to treat fillers; control filler dosage and particle size distribution; add lubricants or flow modifiers.
Key Takeaway
The fluidity loss of PET filled modification needs to be compensated through filler surface treatment and process adjustment.
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