The effect of BN/Al₂O₃<i> in-situ</i> self-assembling on thermal conductivity of polypropylene composites

In this work, γ-aminopropyltriethoxy silane (KH550) and γ-(2,3-epoxypropoxy)propyltrimethoxy (KH560) were used to modify BN Al 2 O 3 , described as KH550-BN KH560-Al with amino epoxy group on surface, respectively. filled in polypropylene (PP) matrix by twin-screw extruder. The thermal conductivity of composites increased increasing catalyst dosage, material residence time barrel homogenization section temperature Hybrid fillers semi core-shell structure formed in-situ reacting though group. pre-assembled toluene into PP prepare composites, which pre-assembling time. experimental results show that do self-assemble melt. self-assembling had 21.6% improvement than no assembling. A low-cost, simple efficient method for preparing thermally conductive insulating is realized.