Integrated multifunctional properties of polypropylene composites by employing three?dimensional flower?like MgO with hierarchical surface morphology

Polymer nanocomposites have attracted increased attention for use in the field of high-voltage direct current (HVDC) cable insulation. To study polymer this purpose, 3D flower-like MgO (flower-MgO) particles with hierarchical surface morphology are first synthesised. Polypropylene (PP) was simultaneously mixed styrene-(ethylene-co-butylene)-styrene triblock copolymer (SEBS) and flower-MgO to obtain PP/SEBS/flower-MgO composites. The microstructural, thermal, electrical, mechanical properties obtained were then studied detail. results showed that loaded at low concentration well dispersed PP/SEBS matrix. incorporation has been found significantly suppress injection homocharges strengthen ability release charge, thus containing accumulation space charge. DC breakdown strength composites 323 MV/m. Meanwhile, tensile elongation break improved by loading 0.5 phr because synergistic toughening effects SEBS MgO. investigation demonstrates immense potential replace nonrecyclable cross-linked polyethylene as an HVDC insulating material.