Paper Title:
Rheological Behavior of Polymethyl Methacrylate (PMMA) Filling through Micro Channels
  Abstract

With the rapid development of micro injection molding, the determination of melt rheological behavior within micro mold cavity is very important for the accurate simulation modeling. Yet several investigations show the viscosity of melt decreases with the reduction of micro channel characteristic size, but there has been no sufficient experimental data for the conclusion. In this paper, depending on the capillary flow model, the measurement experiments of polymer melt viscosity were investigated when Polymethyl Methacrylate (PMMA) was extruded through the micro channel dies of 1000μm ,500μm and 350μm diameter. Test results show that, as micro-channel size decreases, the viscosity increases and the difference of viscosities in different micro channels reduces with increasing shear rate. This indicates microscopic scale melt rheological behavior of PMMA is different from that of other materials.

  Info
Periodical
Advanced Materials Research (Volumes 189-193)
Edited by
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
Pages
451-454
DOI
10.4028/www.scientific.net/AMR.189-193.451
Citation
B. Xu, Y. B. Lu, G. M. Li, S. Xue, B. P. Xiang, "Rheological Behavior of Polymethyl Methacrylate (PMMA) Filling through Micro Channels", Advanced Materials Research, Vols. 189-193, pp. 451-454, 2011
Online since
February 2011
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Price
$32.00
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