Experimental Study of Rheological Characteristics of Polymer Melts in the Micro-Die

Tofek Abddiem; Da Ming Wu; Jian Zhuang; Li Jun Hou; Ying Liu; Li Min Meng; Zhou Xin Shangguan

doi:10.4028/www.scientific.net/AMR.550-553.716

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 550-553Experimental Study of Rheological Characteristics...

Experimental Study of Rheological Characteristics of Polymer Melts in the Micro-Die

Abstract:

Compared with in the conventional scales, the rheological properties of polymer melts have changed in the micro-scales. Based on the principle of capillary flow and modified with the method of Bagley or zero die micro-die, the rheological characteristics of polypropylene (PP) were investigated using the HAAKE capillary rheometer under the micro-die and conventional die. The results show that: the viscosity of polymer melt modified with the method of bagley or zero die micro-die in the different L/D ratio of micro-die is the same and the shear viscosity of PP decreases with the increase of shear rate; Compared with the viscosity in the conventional scales, the measured viscosity of PP in the micro-scales was reduced by 46% in 0.25mm diameter die, 44% in the 0.20mm diameter die and 88% in the 0.15mm diameter die at the same shear rate; a layer of fixed polymer melt was found in the inwall of the micro-die through the calculation of wall slip rate.

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Periodical:

Advanced Materials Research (Volumes 550-553)

Pages:

716-723

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.550-553.716

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Online since:

July 2012

Authors:

Tofek Abddiem*, Da Ming Wu, Jian Zhuang, Li Jun Hou, Ying Liu, Li Min Meng, Zhou Xin Shangguan

Keywords:

Bagley Correction, Micro-Die, Shear Rate, Wall Slip, Zero Die Correction

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