@inproceedings{6ba6983734ed42a18f5ead8b0acdc43c,
title = "Effects of pressure and supercritical fluid on melt viscosity of low density polyethylene (LDPE) in conventional and microcellular injection molding",
abstract = "In this study, the flow and rheological behaviors of low density polyethylene (LDPE) and single-phase LDPE/N2 polymer/gas solutions at various gas contents are measured using a high-pressure slit-die rheometer. The resulting rheology data of LDPE and LDPE/N2 are curve fit using the Cross-WLF model to obtain the seven material model constants, which were then used in simulation of conventional and microcellular injection molding processes. The pressure effect on the shear viscosity of LDPE is also studied. The pressure factor, D3, in the Cross-WLF model was determined by the use of simulation to best fit the experimental results. In addition, a three-dimensional plot of shear viscosity as a function of shear rate and pressure at various temperatures has been constructed. Based on this 3-D viscosity-shear rate-temperature-pressure plot, the increase in viscosity due to the pressure effect is more profound at high pressures, low temperatures, and low shear rates.",
keywords = "Low-density polyethylene (LDPE), Microcellular injection molding, Slit-die rheometer, Viscosity",
author = "Hsu, \{Chih Lin\} and Turng, \{Lih Sheng\} and Osswald, \{Tim A.\} and Natalie Rudolph and Eugene Dougherty and Patrick Gorton",
year = "2011",
language = "英语",
isbn = "9781617829604",
series = "Annual Technical Conference - ANTEC, Conference Proceedings",
pages = "1718--1723",
booktitle = "69th Annual Technical Conference of the Society of Plastics Engineers 2011, ANTEC 2011",
note = "69th Annual Technical Conference of the Society of Plastics Engineers 2011, ANTEC 2011 ; Conference date: 01-05-2011 Through 05-05-2011",
}