Flow-induced enhancement of concentration fluctuations in polymer mixtures

2003 ◽  
Vol 361 (1805) ◽  
pp. 767-779 ◽  
Author(s):  
H. Gerard ◽  
J. T. Cabral ◽  
J. S. Higgins
Keyword(s):  
Concentration Fluctuations ◽  
Polymer Mixtures

Influence of Concentration Fluctuations on the Dielectric .alpha.-Relaxation in Homogeneous Polymer Mixtures

1995 ◽  
Vol 28 (8) ◽  
pp. 2714-2722 ◽  
Author(s):  
G. Katana ◽  
E. W. Fischer ◽  
Th. Hack ◽  
V. Abetz ◽  
F. Kremer
Keyword(s):  
Concentration Fluctuations ◽  
Polymer Mixtures

Positive feedback driven by concentration fluctuations in asymmetrically photo-cross-linked polymer mixtures

1997 ◽  
Vol 55 (6) ◽  
pp. R6340-R6343 ◽  
Author(s):  
Q. Tran-Cong ◽  
A. Harada ◽  
K. Kataoka ◽  
T. Ohta ◽  
O. Urakawa
Keyword(s):  
Positive Feedback ◽  
Concentration Fluctuations ◽  
Polymer Mixtures

Specific volume and features of compressibility during the molding of powder-polymer mixtures with wax-polypropylene binder

2019 ◽  
pp. 25-33
Author(s):  
Alexander Muranov ◽  
Alexey Semenov ◽  
Anatoly Kutsbakh ◽  
Boris Semenov
Keyword(s):  
Phase Transition ◽  
Comparative Analysis ◽  
Powder Metallurgy ◽  
Injection Molding ◽  
Polymer Binder ◽  
Polymer Mixture ◽  
Powder Injection ◽  
Polymer Mixtures ◽  
Pvt Data ◽  
Mathematical Processing

The article discusses one of the modern areas of powder metallurgy – the technology of manufacturing shaped parts by the powder injection molding (PIM). For the powder-polymer mixture (feedstock) with a wax-polypropylene binder of the solvent-thermal type of removal by isobaric volume dilatometry, the dependence of PVT state parameters was studied. For each component of the polymer binder, the dependence of pressure on the temperature of phase transition was obtained. As a result of mathematical processing and analysis of PVT data for the feedstock of the studied type, a technological window of parameters has been determined that allows injection molding of «green parts» with minimal volume shrinkage. The results of a comparative analysis of the compaction of feedstock with a polymer binder catalytic and solution-thermal type of removal are presented.

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