利用双螺杆挤出制备了ABS/多层石墨烯(GNPs)纳米复合材料并研究了其性能。结果表明,GNPs的加入一定程度上提高了ABS的杨氏模量和弯曲模量,但冲击强度有明显的降低。GNPs加入较少时能有效地提高ABS的耐热性能,GNPs含量为2%时,维卡软化点提高8.4℃;GNPs加入更多反而使ABS的维卡软化点温度降低。冲击断面SEM和DSC分析表明,GNPs主要分散于SAN相中。 ABS / multilayer graphene (GNPs) nanocomposites were prepared by twin-screw extrusion and their properties were studied. The results showed that the addition of GNPs increased the Young’s modulus and flexural modulus of ABS to a certain degree, but the impact strength decreased obviously. The addition of GNPs can effectively improve the heat resistance of ABS. When the content of GNPs is 2%, the Vicat softening point increases by 8.4 ℃; while adding more GNPs decreases the Vicat softening point of ABS. Impact cross section SEM and DSC analysis showed that GNPs were mainly dispersed in the SAN phase.