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High barrier sustainable co-polymerized coatings / Lokendra Pal in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 4 (12/2008)
[article]
Titre : High barrier sustainable co-polymerized coatings Type de document : texte imprimé Auteurs : Lokendra Pal, Auteur ; Margaret K. Joyce, Auteur ; Paul D. Fleming, Auteur ; Stéphanie A. Cretté, Auteur ; Charles Ruffner, Auteur Année de publication : 2008 Article en page(s) : p. 479-489 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Argile
Cartonnages
Copolymère styrène butadiène styrène
Gaz
Matériaux -- Propriétés barrières
Perméabilité
Polyacryliques
Polymérisation
Revêtements protecteurs
Vapeur d'eauIndex. décimale : 667.9 Revêtements et enduits Résumé : The goal of this project was to determine the most promising co-polymerized (COP) coating for paperboard for protection against gas and water vapor transmission. The driving force for this was to create a coating that will significantly slow the permeation of water and water vapor through the paperboard, while retaining its mechanical properties. This was accomplished by creating high barrier co-polymerized coatings. This study focuses on the use of modified high shape factor engineered (HSFE) clays. In this study, acrylic co-monomers have been polymerized in the presence of three different, finely dispersed HSFE clays, to prepare the co-polymerized coatings. The wet coating structure was studied using Brookfield and Hercules Hi-Shear viscometers, water retention, and dispersion stability. The dry coating structure was studied using WYKO White Light Interferometry and burn out tests. The cylindrical laboratory coater (CLC)-coated samples were then tested for gas and water vapor permeability. Additionally, the optical and surface properties were determined. The CLC-coated board samples showed almost zero gas permeability and a significant reduction in water vapor transmission rate (water vapor permeability). The water vapor permeability was reduced up to 90% reflecting a one order of magnitude decrease in comparison to a commercially coated sample. The co-polymerized coating with high shape factor and thinner platelet clay displayed the lowest water vapor permeability and the best optical and surface properties, thereby making it the most promising barrier coating for solid bleached sulfate paperboard. DOI : 10.1007/s11998-008-9101-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9101-0.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3475
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 5, N° 4 (12/2008) . - p. 479-489[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 010911 - Périodique Bibliothèque principale Documentaires Disponible Hygienic properties of leather finished with formulations containing collagen hydrolysate obtained by acid hydrolysis / Jan Zarlok in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 6 (11-12/2015)
[article]
Titre : Hygienic properties of leather finished with formulations containing collagen hydrolysate obtained by acid hydrolysis Type de document : texte imprimé Auteurs : Jan Zarlok, Auteur ; Krzysztof Smiechowski, Auteur ; Malgorzata Kowalska, Auteur Année de publication : 2015 Article en page(s) : p. 297-301 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorption
Collagène
Cuirs et peaux -- Finition
Désorption
Hydrolysats de protéines
Hydrolyse
Perméabilité
Polyacryliques
Vapeur d'eauIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : est results of finished leathers are presented in this paper. Varying proportions of acrylic resin and collagen hydrolysate were used as binding agents. The hydrolysate was produced from waste chromium-tanned hide by means of acid hydrolysis. Sorption, desorption and water vapeur permeability were assayed and softness of leathers finished with mixes of varying collagen hydrolysate contents was determined. The testing has demonstrated that collagen hydrolysate in the finishing mixes improved the hygienic properties of finished leathers (increasing absorption, desorption and water vapour permeability). On the other hand leather softness declined a little.
It has been demonstrated that a new leather finishing mix containing protein hydrolysate recovered from chrome shavings can be proposed.Note de contenu : - Production of collagen hydrolysate
- Application of the finishing mix to leathers
- Determination of water vapour absorption
- Determination of desorption of water vapourEn ligne : https://drive.google.com/file/d/1XdFGiPBFLsHlKztW6uxwsPOYoHL1qepZ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25103
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 99, N° 6 (11-12/2015) . - p. 297-301[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17683 - Périodique Bibliothèque principale Documentaires Disponible Importance of using genuine leather in shoe production in terms of foot comfort / Behzat Oral Bitlisli in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 3 (05-06/2005)
[article]
Titre : Importance of using genuine leather in shoe production in terms of foot comfort Type de document : texte imprimé Auteurs : Behzat Oral Bitlisli, Auteur ; Huseyin Ata Karavana, Auteur ; Bahri Basaran, Auteur ; A. Aslan, Auteur Année de publication : 2005 Article en page(s) : p. 107-110 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chaussures
Chaussures -- Matériaux
Confort
Essais (technologie)
Humidité -- Absorption
Perméabilité
Transpiration
Vapeur d'eauIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : In this study, 1200 pairs of work shoes were examined that had caused complaints by users due to dampness resulting from perspiration in the shoes. It was determined that the upper leather was box calf, the lining was a polyether urethane-based synthetic textile product having a non-woven structure and the insole was a polymeric material of an ethylene- propylene diene rubber (EPDM)-based foam structure. It was also found that the water vapour permeability and water absorption properties of the synthetic insole used in the manufacturing of the work shoes were quite low. It was concluded that this prevented absorption of wetness formed inside the shoe and transfer of the damp to the air outside, and negatively affected foot comfort, causing user complaints. Note de contenu : - MATERIALS : Investigation
- RESULTS AND DISCUSSION : Materials used in the manufacture of the shoes - Water vapour permeability - Water absorption
- Table 1 : Typical IR absorption bands of lining
- Table 2 : Typical IR absorption bands of insole
- Table 3 : Results of water vapour permeability (WVP) tests of shoe materials
- Table 4 : Results of static absorption of water (SAW) tests of shoe materialsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39269
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 89, N° 3 (05-06/2005) . - p. 107-110[article]Improved facade coatings / Frank Ludwig in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 195, N° 4492 (09/2005)
[article]
Titre : Improved facade coatings Type de document : texte imprimé Auteurs : Frank Ludwig, Auteur Année de publication : 2005 Article en page(s) : p. 30-34 Langues : Anglais (eng) Catégories : Chlorure de polyvinyle
Copolymère styrène acrylique
Formulation (Génie chimique)
Humidité -- Absorption:Eau -- Absorption
Perméabilité
Polyacryliques
Polymères en émulsion
Résistance à l'humidité:Résistance à l'eau
Revêtements en bâtiment:Peinture en bâtiment
SiliconesLes silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki).
Vapeur d'eauIndex. décimale : 667.9 Revêtements et enduits Résumé : The author explains how with the addition of special emulsified silicone resins has resulted in facade coatings with an improved water vapour permeability.
At all times people have been striven to protect their buildings well. In the past they mainly used silicate paints. Nowadays emulsion-based paints are commun for this purpose.
During the 60s acrylic polymer emulsions appeared on the market. They are the foundation of modern coatings and have replaced silicate paints in many applications. The advantages are faster drying, good adhesion on non mneral surfaces, better pigmentation and simple handling.
Standard formulations with 15-22 polymer emulsion (active matter content)lead to closed films with excellent weather resistance and very low water absorption.
Their water resistance compared to silicate paints was a great progress. But there are still damages at facades - and this exhibits the system's limits. Construction defects at the roof or missing protection of the foundation can cause the migration of water into the masonry.
In this situation the missing water vapour permeability becomes a great disadvantage. The coating will not allow water, to escape by diffusion. As a resukt blisters form and flaking can occur. Finally there is no more protection for the masonry and decomposition will take place.
To solve this problem, facade coatings with an improved water vapour permeability have been developed. These exhibit a low film tension, achieved through a special pigmentation and a lower polymer emulsion content. The coating offers a porous structure and therefore is diffusionable.
Unfortunately the water absorption increases and driving rain can cause moist masonry. To reach an additional water protection special emulsified silicone resins have to be added.
The resulting silicone resin emulsion paints conbine both properties, water resistance and water vapour permeability. This is the most effective protection for buildings.Note de contenu : - Influence of pigment volume concentration and polymer emulsion
- Evaluation of the water absorption
- Evaluation of the water vapour diffusion
- Evaluation of the dirt pick-up
- Influence of hydrophobing agents
- Early rain resistance and dosage of silicone resin emulsionsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27620
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 195, N° 4492 (09/2005) . - p. 30-34[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 002408 - Périodique Bibliothèque principale Documentaires Disponible Improving composite manufacturing reliability and yield with affordable models and simulations / Elena Syerko in JEC COMPOSITES MAGAZINE, N° 120 (04/2018)
[article]
Titre : Improving composite manufacturing reliability and yield with affordable models and simulations Type de document : texte imprimé Auteurs : Elena Syerko, Auteur ; Christophe Binetruy, Auteur ; Pavel Simacecek, Auteur ; Suresesh Advani, Auteur Année de publication : 2018 Article en page(s) : p. 58-62 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Automatisation
Capteurs (technologie)
Composites thermoplastiques -- Moulage par injection
Fiabilité
Logiciels
Moulage de composites liquides
Moulage par transfert de résine sous vide
Perméabilité
Simulation par ordinateur
Textiles et tissus à usages techniquesIndex. décimale : 668.4 Plastiques, vinyles Résumé : Composite manufacturing still often relies on trial-and-error approaches to design the process, making little use of the plethora of science-based literature, models and simulations. This paper presents an approach for the development of easy-to-use tools with no learning curve, with lower licensing costs and can provide useful information to manufacturing engineers or technicians, helping them improve their yield and reliability with fewer trials. Examples of such tools are presented for liquid composite moulding processes, but can be extended to other processes. Note de contenu : - Approach
- Image-based fibre perform permeability prediction tool
- Web-based tools and software "calculators"
- Automated tools
- Workforce training
- Consulting
- Fig. 1 : Liquid Injection Moulding Simulation (LIMS software) can predict vent locations for successful mould filling in a complex mould, which may trigger race tracking along edges and corners resulting in 1024 possible flow patterns
- Fig. 2 : Image-basee fabric permeability prediction tools (Ge-Mage-Flow3D software). After one has the values of the permeability of fabrics, that can be used as input for mould filling simulations
- Fig. 3: Sequential VARTM infusion
- Fig. 4 : Automated process analysis system. Depending on the levet of uncertainty, the user provides the available part data and receives encapsulated output. Software controllers convert the data, execute the simulation and extract the crucial information from the results. The operations of the software controller (s) and simulation software are transparent to the user. Note that: 11 the full simulation data can still be stored and reviewed, and (**) as the current implementation [4, 9, 10] is to serve the part designer, a simple cost analysis is possible
- Fig. 5 : Conceptual schematic from CAD to automated manufacturing using sensors and simulationsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30478
in JEC COMPOSITES MAGAZINE > N° 120 (04/2018) . - p. 58-62[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19778 - Périodique Bibliothèque principale Documentaires Disponible 19779 - Périodique Bibliothèque principale Documentaires Disponible PermalinkIndustrie des rubans adhésifs. Mesure de la transmission de vapeur d'eau en atmosphère chaude et humide - Norme NF EN 12023 / Association Française de Normalisation (Paris) / Saint-Denis La Plaine : Association Française de Normalisation (AFNOR) (1996)
PermalinkInfluence de l'effet thermique du plaquage sur l'hydrophilie du cuir au chrome nourri / Jean Poré in TECHNICUIR, N° 6 (06-07/1978)
PermalinkInfluence of biocide pre-treatment of wood on performance of exterior coatings / M. Palvic in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 88, B1 (03/2005)
PermalinkInfluence of selection of surfactant system on application properties of polymeric dispersions / Lukasz Toma in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 207, N° 4634 (09/2017)
PermalinkInfluence of sublimation transfer printing on alterations in the structural and physical properties of knitted fabrics / Sandra Stojanovic in COLORATION TECHNOLOGY, Vol. 137, N° 2 (04/2021)
PermalinkInfluence of various waterproofing agents on water and water vapour absorption and permeability / Z. Bajza in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 87, N° 4 (07-08/2003)
PermalinkInsight into the correlations between fiber dispersion and physical properties of chrome tanned leather / Xiu He in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXV, N° 1 (01/2020)
PermalinkInvestigation of microstructure and air permeability of aerogel-coated textile fabric materials / A. Fonner in INTERNATIONAL POLYMER PROCESSING, Vol. 36, N° 3 (2021)
PermalinkPermalinkLeather property : water resistance / Karl Flowers in INTERNATIONAL LEATHER MAKER (ILM), N° 38 (11-12/2019)
PermalinkLocational differences in the physical properties of sole leather / P. L. Muthiah in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 60 (Année 1976)
PermalinkLocational differences in the physical properties of sole leather / P. L. Muthiah in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 60, N° 3 (05-06/1976)
PermalinkLocational differences in the physical properties of upper leather / P. L. Muthiah in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 60 (Année 1976)
PermalinkLocational differences in the physical properties of upper leather / P. L. Muthiah in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 60, N° 3 (05-06/1976)
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