Percolation phenomenon in waterless microemulsions

2007 ◽  
pp. 263-269 ◽  
Author(s):  
J. Peyrelasse ◽  
C. Boned ◽  
Z. Saidi
Keyword(s):  
Percolation Phenomenon

Filtration Efficiency and the Percolation Phenomenon in a Grooved-Plate Separator

2004 ◽  
Vol 40 (3) ◽  
pp. 1650-1656
Author(s):  
N.M. Sido ◽  
A. Mailfert ◽  
G. Gillet ◽  
A. Colteu
Keyword(s):  
Filtration Efficiency ◽  
Plate Separator ◽  
Percolation Phenomenon

Formation of a Tablet: A Site and Bond Percolation Phenomenon

1992 ◽  
Vol 81 (10) ◽  
pp. 976-982 ◽  
Author(s):  
Hans Leuenberger ◽  
Ruth Leu
Keyword(s):  
Bond Percolation ◽  
A Site ◽  
Percolation Phenomenon

Numerical Model of Complex Porous Media

2002 ◽  
Author(s):  
Andre´ Chambarel ◽  
Herve´ Bolvin
Keyword(s):  
Porous Media ◽  
Numerical Model ◽  
Physical Properties ◽  
Space Distribution ◽  
Partial Differential ◽  
Differential Problem ◽  
Classical Models ◽  
Element Approach ◽  
Statistical Approaches ◽  
Percolation Phenomenon

In complex porous media we often notice a percolation phenomenon [KIR 71] [GRI 89]. Usually these media present discontinuous characteristics and a random space distribution [LET 00] [BIR 95]. There results that the classical models based on the resolution of a partial differential problem become inefficient because we have non-derivable function [MAU 01]. Statistical approaches based on the resolution of partial differential problems pose notably the questions concerning the continuity of the functions representing the physical properties of the medium. In this work we propose to study a numerical model of porous media based on a mixture of 2 components in a percolation context. In practice, the main difficulty is based on the complex physical properties. We present also a model of homogenization. Our numerical model is based on the Finite Element approach.

Dynamic percolation phenomenon of poly(methyl methacrylate)/surface fluorinated carbon black composite

2003 ◽  
Vol 89 (4) ◽  
pp. 1151-1155 ◽  
Author(s):  
A. Katada ◽  
Y. Konishi ◽  
T. Isogai ◽  
Y. Tominaga ◽  
S. Asai ◽  
...  
Keyword(s):  
Carbon Black ◽  
Methyl Methacrylate ◽  
Poly Methyl Methacrylate ◽  
Fluorinated Carbon ◽  
Percolation Phenomenon

Research on Conductive Property of Carbon Fiber/Carbon Black-Filled Cement-Based Composites

2012 ◽  
Vol 182-183 ◽  
pp. 144-147 ◽  
Author(s):  
Yan Ting Du ◽  
Ran Ran Zhao ◽  
Jin Qiu Dong
Keyword(s):  
Carbon Fiber ◽  
Carbon Black ◽  
Percolation Theory ◽  
Volume Fraction ◽  
Fixed Carbon ◽  
Total Volume Fraction ◽  
Conductive Property ◽  
Conductive Particles ◽  
Percolation Phenomenon ◽  
Lower Resistivity

Electrical conductive carbon-modified cement-based composites are important multi-functional structural material. Double compounding carbon fiber and carbon black into cement-based material can improve the electrical conductive property of cement-based composites. In this paper, the influences of carbon fiber ratio and total volume fraction of carbon components on the resistivity of cement-based composites are investigated. The results show that both carbon fiber ratio and total volume fraction have great effect on the conductive behavior of carbon-modified cement-based material. At a fixed carbon fiber ratio, with the increase of total volume fraction, the resistivity of cement-based composites drops down dramatically and shows obvious percolation phenomenon. The reason is that with more and more conductive particles and fibers added into the cement material, the conductive components connect with each other gradually and at certain point reach the percolation threshold. At a fixed total volume fraction, the resistivity drops down with the increase of carbon fiber ratio. This is because that the carbon fiber has larger aspect ratio than carbon black, so carbon fiber could get lower resistivity with the same dosage according to the percolation theory. Finally, the results show that with 0.5 carbon fiber ratio and 2% total volume fraction the carbon-modified cement-based composites have relatively low resistivity, high workability and high compressive strength.

Percolation phenomenon on fluorinated perfluoropolyether water in oil microemulsions: The effect of temperature

1994 ◽  
Vol 50 (2) ◽  
pp. 1313-1316 ◽  
Author(s):  
M. Grazia Giri ◽  
Marcello Carlà ◽  
Cecilia M. C. Gambi ◽  
Donatella Senatra ◽  
A. Chittofrati ◽  
...  
Keyword(s):  
Effect Of Temperature ◽  
Percolation Phenomenon
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