Melt flow instabilities in capillary flow of two-phase polymer systems

1972 ◽  
Vol 12 (2) ◽  
pp. 77-80 ◽  
Author(s):  
C. D. Han ◽  
R. R. Lamonte
Keyword(s):  
Capillary Flow ◽  
Flow Instabilities ◽  
Melt Flow ◽  
Two Phase ◽  
Polymer Systems

Extrusion of Polymer Melts and Melt Flow Instabilities. I. Experimental Study of Capillary Flow and Extrudate Distortion

1969 ◽  
Vol 42 (3) ◽  
pp. 675-681 ◽  
Author(s):  
Gene A. Bialas ◽  
James L. White
Keyword(s):  
Experimental Data ◽  
Polymer Melts ◽  
Capillary Flow ◽  
Flow Instability ◽  
Research Effort ◽  
Flow Instabilities ◽  
Melt Flow ◽  
Considerable Research ◽  
Extrudate Distortion ◽  
First Descriptions

Abstract The extrusion of molten plastics, elastomers and fibers represent an important industrial operation. The rate of extrusion of melts through dies is limited by the onset of a flow instability. This phenomenon consists of a change in flow from uniform to irregular that results in the production of rough and distorted extradates drastically different from the smooth cylinders obtained at lower rates. Extrusion melt flow instability is observed in the entire spectrum of polymer melts ranging from silicone gums through nylon and polyolefin plastics to raw elastomers. Since the first descriptions of this phenomena in the 1940's considerable research effort has been expended in this area with limited agreement. It is the purpose of part I to: (1) present new experimental data on capillary flow of polymer melts and extrudate distortion, and (2) to review critically the literature on extrudate distortion.

COMPARISON OF THE EFFECTS OF DIFFERENT TYPES OF TUBE INSERTS ON TWO-PHASE FLOW INSTABILITIES

2013 ◽  
Vol 20 (2) ◽  
pp. 179-194 ◽  
Author(s):  
Gokhan Omeroglu ◽  
Omer Gomakh ◽  
Sendogan Karagoz ◽  
Suleyman Karsli
Keyword(s):  
Two Phase Flow ◽  
Flow Instabilities ◽  
Phase Flow ◽  
Two Phase ◽  
Different Types

TWO-PHASE FLOW INSTABILITIES ANALYSES IN BOILING WATER REACTOR

2016 ◽  
Author(s):  
Antonella Lombardi Costa ◽  
WILMER ARUQUIPA COLOMA ◽  
Antonella Lombardi Costa ◽  
Claubia Pereira ◽  
Maria Veloso ◽  
...  
Keyword(s):  
Two Phase Flow ◽  
Boiling Water ◽  
Flow Instabilities ◽  
Boiling Water Reactor ◽  
Phase Flow ◽  
Two Phase ◽  
Water Reactor

Effect of heat transfer augmentation on two-phase flow instabilities in a vertical boiling channel

1983 ◽  
Vol 17 (3) ◽  
pp. 161-169 ◽  
Author(s):  
A. Mentes ◽  
O. T. Yildirim ◽  
H. Gürgenci ◽  
S. Kakaç ◽  
T. N. Veziro¯glu
Keyword(s):  
Heat Transfer ◽  
Two Phase Flow ◽  
Flow Instabilities ◽  
Phase Flow ◽  
Two Phase ◽  
Heat Transfer Augmentation

New Polymers Forming Aqueous Two-Phase Polymer Systems

2000 ◽  
Vol 16 (3) ◽  
pp. 408-415 ◽  
Author(s):  
N. Pietruszka ◽  
I.Y. Galaev ◽  
A. Kumar ◽  
Z.K. Brzozowski ◽  
B. Mattiasson
Keyword(s):  
Two Phase ◽  
Polymer Systems
Sign in / Sign up

Export Citation Format

Share Document