介绍了动态拉伸形变支配的叶片式混合装置的结构及工作原理，在该混合装置及商品化的以剪切形变为主的Brabender转子密炼机上进行PS/HDPE熔融共混实验，分析了转子轴转速和混合时间对共混物力学性能、流变性能及微观形貌的影响。结果表明：与Brabender转子密炼机类似，叶片式混合装置制得的PS/HDPE共混物的拉伸强度随混合时间的延长和转子轴转速的升高先增加之后基本保持不变；与Brabender转子密炼机相比，叶片式混合装置的转子轴转速对共混物分散相粒径的影响较小，且转速相同时达到相同的分散相粒径叶片式混合装置需要的混合时间较短；随转子轴转速升高和混合时间延长，利用转子密炼机共混所得共混物表观黏度基本保持不变，而叶片混合装置共混得到的共混物表观黏度降低。叶片混合装置比Brabender转子密炼机的混合效率高，混合效果更好。

In the investigation, the structure and working principle of a vane compounder dominated by dynamic tensile deformation were introduced, and PS/HDPE melt blending experiments were conducted on the vane compounder and a commercial Brabender rotor internal mixer dominated by shear deformation. Then, the influences of the rotating speed and the mixing time on the mechanical property, rheological property and microstructure of the blends were discussed. The results show that (1) the tensile strength of the PS/HDPE blends molded by the vane compounder first increases and then keeps stable with the increases of the mixing time and the rotating speed, which is similar to those of the Brabender rotor internal mixer; (2) as compared with the Brabender rotor internal mixer, the rotating speed of the vane compounder has a smaller effect on the particle size of the dispersion phase of the blends, and the vane compounder needs a shorter time to achieve the same particle size of the dispersion phase at the same rotating speed; (3) the apparent viscosity of the blends molded by the Brabender rotor internal mixer remains unchanged with the increases of the mixing time and the rotating speed while that of the vane compounder decreases; and (4) the vane compounder shows a higher mixing efficiency and a better mixing effect in comparison with those of the Brabender rotor internal mixer.