Extrusion & Post
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CEF blended with incompatible resin delaminates
Fenómeno do problema
CEF blended with polar resins such as PA/ABS, the extrudate completely delaminates, extremely poor mechanics
Análise das causas
CEF and polar resin polarity difference large, compatibility zero, interfacial adhesion extremely low, no compatibilizer used
Solução
1) Use CEF graft compatibilizer CEF-g-MAH 2-5wt%; 2) Add epoxy compatibilizer 1-2wt%; 3) CEF addition amount <10wt%, keep the other resin as continuous phase; 4) Twin-screw high-shear blending to disperse CEF <0.3μm
Conclusão principal
Blends with large polarity differences need reactive compatibilizers to form chemical bonding at the interface to solve
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