Extrusion & Post
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MP blended with incompatible resin delamination
Fenómeno do problema
MP blended with polar resins such as PA/ABS, extrudate completely delaminated, mechanical properties extremely poor
Análise das causas
MP and polar resin have large polarity difference, compatibility is zero, interfacial adhesion extremely low, no compatibilizer used
Solução
1) use MP graft compatibilizer MP-g-MAH 2-5wt%; 2) add epoxy-type compatibilizer 1-2wt%; 3) MP addition <10wt% to keep the other resin as the continuous phase; 4) twin-screw high-shear compounding to disperse MP <0.3μm
Conclusão principal
blends with large polarity difference require a reactive compatibilizer to form chemical bonding at the interface to solve
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