Extrusion & Post
2 views
Product delamination and peeling
Problem Phenomenon
The skin layer and core layer of the injection molded product separate, the fracture is layered, and mechanical properties severely decline
Cause Analysis
Insufficient compatibility of blended components and weak interface bonding; dispersed phase particle size too large (>10μm); excessive injection shear rate causes phase separation
Solution
Select a suitable compatibilizer (MAH graft, etc.); optimize screw shear combination to make dispersed phase particle size <1μm; use multi-stage injection speed to reduce phase separation
Key Takeaway
The essence of delamination is interface bonding failure caused by thermodynamic incompatibility
Was this helpful?
0 people found this helpful
Thank you for your feedback!