中文摘要：

研究了不同螺杆组合及加料方式对聚碳酸酯（PC）／丙烯腈-丁二烯-苯乙烯三元共聚物（ABS）合金挤出工艺和材料力学性能的影响，并设计了一种适合于PC／ABS合金加工的螺杆组合方式。结果表明：适当的螺杆组合和加料方式可改善PC／ABS的挤出工艺，提高材料的力学性能；PC／ABS合金的拉伸强度和弯曲强度分别由原来的56．43．63．37MPa提高到68．36，81．16MPa；悬臂梁缺口冲击强度由原来的6．23MPa提高到26．80MPa。

英文摘要：

The author studied the influences of different screw assemblies and feeding modes on the extrusion process and mechanical properties of polycarbonate（PC）/acrylonitrile-butadiene--styrene terpolymer （ABS） alloys and designed a screw assembly suitable for processing the PC/ABS alloys. The results show that proper screw assemblies and feeding modes can improve the extrusion process and enhance the mechanical properties of the PC/ABS alloys. The tensile strength, flexural strength and notched Izod impact strength of the alloys increase from 56A3 to 68.36, from 63.37 to 81.16 and from 6.23 to 26.80 MPa, respectively.