WO2007049169A2 - Unite de determination de la permeabilite de revetements au dioxyde de carbone - Google Patents

Unite de determination de la permeabilite de revetements au dioxyde de carbone Download PDF

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Publication number
WO2007049169A2
WO2007049169A2 PCT/IB2006/053674 IB2006053674W WO2007049169A2 WO 2007049169 A2 WO2007049169 A2 WO 2007049169A2 IB 2006053674 W IB2006053674 W IB 2006053674W WO 2007049169 A2 WO2007049169 A2 WO 2007049169A2
Authority
WO
WIPO (PCT)
Prior art keywords
permeability
unit
carbon dioxide
coatings
determining
Prior art date
Application number
PCT/IB2006/053674
Other languages
English (en)
Other versions
WO2007049169A3 (fr
Inventor
Adélio Miguel MAGALHÃES MENDES
Paulo Jorge Ribeiro Da Cruz
João Carlos GODINHO DE FARIA DOS SANTOS
Catarina De Carvalho Carneiro
José Luís PINHEIRO DE SOUSA NOGUEIRA
Original Assignee
Universidade Do Porto
Cin - Corporação Industrial Do Norte, S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Universidade Do Porto, Cin - Corporação Industrial Do Norte, S.A. filed Critical Universidade Do Porto
Publication of WO2007049169A2 publication Critical patent/WO2007049169A2/fr
Publication of WO2007049169A3 publication Critical patent/WO2007049169A3/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
    • G01N15/0806—Details, e.g. sample holders, mounting samples for testing

Definitions

  • the present invention refers to a unit designed for determining the CO permeability of coatings. This determination is of extreme importance concerning facade coatings, because it allows the coatings reference as anticarbonation.
  • Wicke-Kallenback method is specifically applied to the coatings branch (such as facade coatings).
  • Carbon dioxide (CO ) is one of the corrosive agents that has a major impact on concrete degradation and has been increasing its concentration in the atmosphere due to the rise on the consumption of fossil fuels.
  • the present invention implements Wicke-Kallenback method (described in EN
  • Figure 2b presents one part of the permeation cell (29) where one can visualize the distribution channel (35) of the upper chamber inlet stream (21) and the collected hole (36) of the upper chamber outlet stream (22);
  • Figure 2d presents one part of the permeation cell (31) where one can visualize the lower chamber (33) feed lateral hole (34);
  • Figure 3 represents a sketch of the upper chamber (32) of the permeation cell
  • Permeation cell is made in stainless steel, has an external diameter around 13 cm and 4.5 cm high, comprising o-rings that are placed to assure the permeation cell gas staunchness.
  • the CO / N mixture used in this unit is made in mixture container (13), with 5 1 of capacity. This container is in the inferior part of this unit and in the horizontal line.
  • the container inlet and outlet for gases is made through a tube in the center of one of its sidewalls to assure the better mixture homogeneity and to minimize the gases stratification.
  • Mixture is prepared according to partial pressures of the evolved gases, following the next equations (assuming perfect eases behaviour):
  • This thermostatic chamber is characterized by its simplicity and precision at low cost (between 70 and 80% cheaper than a conventional thermostatic chamber with the same effective volume).
  • This unit has three pressure transducers (14) with high precision. These devices are fundamental to monitor pressure inside the upper chamber, the permeation chamber and in the mixture container. The upper and lower chambers must be at atmospheric pressure. The pressure sensor connected to the mixture container is used to produce the mixture (used in permeability measurements) because this mixture is prepared based on gases partial pressures.
  • This unit has two mass flow controllers (15). These devices control upper (32) and lower (33) chambers inlet streams of the permeation cell (11). These devices work range are 0 to 100 ml mi rf 1 for the mass flow controller connected to the upper chamber and O a IO ml mi rf 1 for the mass flow controller connected to the lower chamber.
  • the upper chamber flow rate should be the highest possible.
  • the lower chamber flow rate must be low enough to guarantee the higher CO concentration in this chamber outlet (24) - this contributes to the unit accuracy increase.
  • These devices are from Bronkhorst Hi-Tec® and have an accuracy of about 1% F. S..
  • the next step comprises the evacuation of the mixture tank and then the performance of the gas mixture of CO2 (15%) in N (85%) according to the procedure described before.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

Cette invention porte sur une unité visant à déterminer la perméabilité de revêtements au dioxyde de carbone, cette unité comprenant une enceinte thermostatique (10) contenant une cellule de perméation (11), un analyseur spécifique du CO2 (12), un réceptacle de mélange (13), trois transducteurs de pression (14) et deux régulateurs de débit massique (15) pour réguler le courant d'amenée dans la cellule de perméation. Cette unité est raccordée à un processeur de données (16) et applique la méthode de Wicke-Kallenback. Le but de l'utilisation de cette unité de détermination de la perméabilité de revêtements au dioxyde de carbone était de promouvoir sa fonctionnalité et son efficacité. Avec cette unité, il est possible d'obtenir des résultats sur une courte durée, ce qui est un avantage majeur en comparaison avec d'autres méthodes existantes. Les revêtements sont appliqués sur du papier kraft, du fait de son efficacité prouvée par ces tests et de son faible coût.
PCT/IB2006/053674 2005-10-27 2006-10-06 Unite de determination de la permeabilite de revetements au dioxyde de carbone WO2007049169A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PT103373 2005-10-27
PT10337305A PT103373B (pt) 2005-10-27 2005-10-27 Unidade de determinação da permeabilidade de revestimentos ao dióxido de carbono

Publications (2)

Publication Number Publication Date
WO2007049169A2 true WO2007049169A2 (fr) 2007-05-03
WO2007049169A3 WO2007049169A3 (fr) 2007-08-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/053674 WO2007049169A2 (fr) 2005-10-27 2006-10-06 Unite de determination de la permeabilite de revetements au dioxyde de carbone

Country Status (2)

Country Link
PT (1) PT103373B (fr)
WO (1) WO2007049169A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011011282A1 (de) * 2011-02-15 2012-08-16 SubCtech GmbH Messvorrichtung zur Erfassung in Flüssigkeiten gelöster Bestandteile

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2842958A (en) * 1956-01-27 1958-07-15 Pure Oil Co Apparatus for measuring flow characteristics of porous specimens by displacement
US3590634A (en) * 1969-05-05 1971-07-06 Stanford Research Inst Instrument for determining permeation rates through a membrane
US4656865A (en) * 1985-09-09 1987-04-14 The Dow Chemical Company System for analyzing permeation of a gas or vapor through a film or membrane
FR2715471A1 (fr) * 1994-01-21 1995-07-28 Commissariat Energie Atomique Dispositif de mesure de la perméabilité d'un échantillon plat de matériau.
US6119506A (en) * 1998-06-15 2000-09-19 The United States Of America As Represented By The Secretary Of The Army Apparatus and method for determining transport properties of porous materials
US6422063B1 (en) * 1998-08-11 2002-07-23 Ramaswamy C. Anantheswaran Rapid method to experimentally measure the gas permeability of micro-perforated films
EP1564539A2 (fr) * 2004-02-17 2005-08-17 GE Healthcare Finland Oy Séparateur de liquide pour un analyseur de gaz et methode pour separer un composant liquide d'un gaz

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2842958A (en) * 1956-01-27 1958-07-15 Pure Oil Co Apparatus for measuring flow characteristics of porous specimens by displacement
US3590634A (en) * 1969-05-05 1971-07-06 Stanford Research Inst Instrument for determining permeation rates through a membrane
US4656865A (en) * 1985-09-09 1987-04-14 The Dow Chemical Company System for analyzing permeation of a gas or vapor through a film or membrane
FR2715471A1 (fr) * 1994-01-21 1995-07-28 Commissariat Energie Atomique Dispositif de mesure de la perméabilité d'un échantillon plat de matériau.
US6119506A (en) * 1998-06-15 2000-09-19 The United States Of America As Represented By The Secretary Of The Army Apparatus and method for determining transport properties of porous materials
US6422063B1 (en) * 1998-08-11 2002-07-23 Ramaswamy C. Anantheswaran Rapid method to experimentally measure the gas permeability of micro-perforated films
EP1564539A2 (fr) * 2004-02-17 2005-08-17 GE Healthcare Finland Oy Séparateur de liquide pour un analyseur de gaz et methode pour separer un composant liquide d'un gaz

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ZHENG B ET AL: "FORMATION OF DROPLETS OF ALTERNATING COMPOSITION IN MICROFLUIDIC CHANNELS AND APPLICATIONS TO INDEXING OF CONCENTRATIONS IN DROPLET-BASED ASSAYS" ANALYTICAL CHEMISTRY, AMERICAN CHEMICAL SOCIETY. COLUMBUS, US, vol. 76, no. 17, 1 September 2004 (2004-09-01), pages 4977-4982, XP001209647 ISSN: 0003-2700 *
ZHENG ET AL: "Using nanoliter plugs in microfluidics to facilitate and understand protein crystallization" CURRENT OPINION IN STRUCTURAL BIOLOGY, CURRENT OPINION IN STRUCTURAL BIOLOGY, GB, vol. 15, no. 5, October 2005 (2005-10), pages 548-555, XP005102220 ISSN: 0959-440X *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011011282A1 (de) * 2011-02-15 2012-08-16 SubCtech GmbH Messvorrichtung zur Erfassung in Flüssigkeiten gelöster Bestandteile

Also Published As

Publication number Publication date
PT103373A (pt) 2007-04-30
PT103373B (pt) 2008-07-23
WO2007049169A3 (fr) 2007-08-16

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