Extrusion & Post
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Glass Fibre blended with incompatible resin delaminates
Problembeschreibung
Glass Fibre blended with polar resins such as PA/ABS, extrudate completely delaminated, mechanical properties extremely poor
Ursachenanalyse
Glass Fibre and polar resin have large polarity difference, compatibility is zero, interfacial adhesion extremely low, no compatibilizer used
Lösung
1) Use Glass Fibre graft compatibilizer Glass Fibre-g-MAH 2-5wt%; 2) add epoxy-type compatibilizer 1-2wt%; 3) Glass Fibre addition <10wt% to keep the other resin as continuous phase; 4) twin-screw high-shear blending to disperse Glass Fibre <0.3μm
Wichtigste Erkenntnis
Blends with large polarity difference need reactive compatibilizer to form chemical bonding at the interface to solve
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