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Concrete benefits from new nanoparticles / Antonio Esteban-Cubillo in EUROPEAN COATINGS JOURNAL (ECJ), N° 11 (11/2013)
[article]
Titre : Concrete benefits from new nanoparticles : Sepiolite carrier enhances photocatalytic activity of TiO2 Type de document : texte imprimé Auteurs : Antonio Esteban-Cubillo, Auteur ; raùl Pina-Zapardiel, Auteur ; Jose Vera-Agullo, Auteur ; Julio Santarén, Auteur Année de publication : 2013 Article en page(s) : p. 5-9 Note générale : Supplément "Construction chemicals" - Bibliogr. Langues : Anglais (eng) Catégories : Additifs
Atmosphère -- Pollution -- Lutte contre
Construction -- Matériaux
Dépolluants
Dioxyde de titane
Essais accélérés (technologie)
Matériaux cimentaires
Microscopie électronique à balayage
Monoxyde d'azote
Mortier -- Additifs
Nanoparticules
Photocatalyse
Réduction des composés organiques volatils
Revêtement auto-nettoyant:Peinture auto-nettoyante
Revêtements en bâtiment:Peinture en bâtiment
Revêtements en béton asphaltique
SépioliteLa sépiolite est un minéral du groupe des argiles à structure fibreuse. Le nom de ce minéral dérive d'un terme grec ancien, francisé en sépion et qui désigne l'os de seiche.
Chaque fibre est formée d'une multitude de tunnels (ou canalicules) d'environ 1 nm^2 régulièrement espacés (voir "Structure cristalline"). Cette configuration particulière en briques creuses allongées, propre à son arrangement cristallin, lui confère une surface spécifique très importante: 394 m^2/g.
Suivant les carrières dont elle est extraite, on note la présence de fer, d'aluminium voire de nickel et même de manganèse dans la structure cristalline de la sépiolite.
Structure cristalline : La formule générale retenue dans la littérature est Mg4 Si6 O15 (OH)2 · 6(H2O).
La structure est en doubles feuillets de type mica, mais la polarité de chaque feuillet s’inverse tous les 6 tétraèdres, formant ainsi une structure 3D de doubles rubans anastomosés créant les canalicules décrits ci-dessus.
Elle appartient au groupe d'espace Pnan, avec comme paramètre de maille : a = 13.43 Å, b = 26.88 Å, c = 5.281 Å.
ToluèneLe toluène, également appelé méthylbenzène ou phénylméthane est un hydrocarbure aromatique sous la forme d'un liquide transparent, très répandu et utilisé comme produit de départ industriel ou comme solvant. Il dissout un grand nombre d'huiles, graisses, résines (naturelles ou de synthèse). Il a une odeur caractéristique (type dissolvant pour peinture) rappelant celle, douceâtre, du benzène apparenté.Index. décimale : 667.9 Revêtements et enduits Résumé : Sepiolite has been used as a carrier that allows monodispersed TiO2 nanoparticles to be carried on its surface, so improving their catalytic efficiency. This material has been tested in several different cementitious materials. It has proved to be highly effective in the reduction of airborne pollutants and provides self-cleaning properties. Note de contenu : - How to enhance the effectiveness of nanoparticles
- Composite photocatalyst is flexible in application
- Why the new additive has high efficiency
- Chemical principle outlined
- Additive has minimal effect on physical properties
- Efficient NO and VOC removal
- Tests carried out in paving blocks
- Photocatalytic mortar render
- Asphalt road surfaces can also be treated
- Good performance retained in simulated wear tests
- Façade panels and screeds are undergoing tests
- An efficient and versatile construction additive
- Table 1 : Influence of TiO2-sepiolite on physical properties of a rendering mortar and of a single-coat mortar
- Table 2 : Decontamination tests for NO and toluene
- Table 3 : Mechanical properties of asphalt surfaces
- Figure 1 : Samples of different façade formulations with TiO2-sepiolite additive during the self-cleaning test
- Figure 2 : SEM of a façade precast surface and SEM-EDX with TiO2 mapping
- Figure 3 : Asphalt pavement (left) and speciments tested under the heel tracking test
- Figure 4 : SEM of a façade precast surface and SEM-EDX with TiO2 mappingEn ligne : https://drive.google.com/file/d/1CeDmluhwx-VXaZ6pA3Wcl5nw8uewOMFa/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19736
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 11 (11/2013) . - p. 5-9[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15700 - Périodique Bibliothèque principale Documentaires Disponible Cooler shades for roofs and walls / Rob Portsmouth in EUROPEAN COATINGS JOURNAL (ECJ), N° 10 (10/2013)
[article]
Titre : Cooler shades for roofs and walls : New generation of solar-reflective coatings widens choice of colours Type de document : texte imprimé Auteurs : Rob Portsmouth, Auteur Année de publication : 2013 Article en page(s) : p. 36-39 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dioxyde de titane
Réflectance
Réflectivité thermique
Revêtements en bâtiment:Peinture en bâtimentIndex. décimale : 667.9 Revêtements et enduits Résumé : Energy demands in hot climates can be reduced by using roof and wall coatings with a high solar reflectance. White coatings achieve this, but since much of the solar energy is in the IR region, IR reflective pigments allow coloured 'cool roof' coatings to be obtained. Special new grades of TiO2 maximise IR reflectance, allowing a wide range of conventional pigments to be used in these coatings. Note de contenu : - How reflective roof coatings reduce energy demands
- Solar-reflective coatings offer other benefits
- Standards for solar reflectance are now emerging
- Solar reflectance - why bright need not be white
- How infrared reflection is optimised
- Suitable primers can further increase IR reflectance
- Potential gains go beyond energy savingsEn ligne : https://drive.google.com/file/d/1bwHgG5t7-NeGz0H-PhRiu8OsDGUqFi32/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19525
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 10 (10/2013) . - p. 36-39[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15582 - Périodique Bibliothèque principale Documentaires Disponible Developing and evaluating early rain resistance in exterior architectural coatings / Shelby Kellogg in COATINGS TECH, Vol. 15, N° 8 (08/2018)
[article]
Titre : Developing and evaluating early rain resistance in exterior architectural coatings Type de document : texte imprimé Auteurs : Shelby Kellogg, Auteur Année de publication : 2018 Article en page(s) : p. 46-49 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Applications extérieures
Essais accélérés (technologie)
Essais de résilience
Formulation (Génie chimique)
Hydrophobie
Polyacryliques
Résistance à l'humidité:Résistance à l'eau
Revêtements -- Additifs
Revêtements en bâtimentIndex. décimale : 667.9 Revêtements et enduits Résumé : High humidity and precipitation challenges the ability of exterior architectural coatings to properly cure and provide the necessary protection of exterior surfaces. To increase early rain resistance and decrease water sensitivity, different formulation techniques were investigated. Raw materials were evaluated in a standard starting point formula to generate an optimal formulation that reduces water sensitivity and surfactant leaching, while simultaneously increasing early rain resistance. Results for early rain resistance were determined by developing new testing methodology that varied environmental factors during the film curing process. We determined that using functional additives as well as increasing the hydrophobicity of the coating film can substantially increase early rain resistance. Note de contenu : - PROCEDURE DEVELOPMENT AND TESTING : Early rain resistance testing apparatus - Test method - Reproductibility
- EARLY RAIN RESISTANCE FORMULATION TECHNIQUES : Latex hydrophobicity - Formula optimization
- Fig. 1 : Early rain resistance testing apparatus
- Fig. 2 : Divited 7/12 mil gap drawdown bar
- Fig. 3 : Examples of samples positions on panels
- Fig. 4 : Contact angle of meat latex
- Fig. 5 : Formulation component importance on early rain resistance
- Fig. 6 : Comparative earl rain resistance results
- Table 1 : Exterior commercial flat paint breakthrough time in seconds
- Table 2 : Early rain resistance starting point formula with DOE component loading levels
- Table 3 : Early rain resistance optimized formulaEn ligne : https://drive.google.com/file/d/1ZcaoOlprJHHc23zXeXz5JxMAVz-LST5o/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31270
in COATINGS TECH > Vol. 15, N° 8 (08/2018) . - p. 46-49[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20271 - Périodique Bibliothèque principale Documentaires Disponible Development of an accelerated test method for dirt pick-up resistance / Daniel C. Kraiter in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 5 (09/2021)
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Titre : Development of an accelerated test method for dirt pick-up resistance Type de document : texte imprimé Auteurs : Daniel C. Kraiter, Auteur ; Scott C. Brown, Auteur ; Michael P. Diebold, Auteur ; Peter Jernakoff, Auteur ; Alan F. Vera-Balbuena, Auteur Année de publication : 2021 Article en page(s) : p. 1413-1430 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion thermique
Caractérisation
Concentration pigmentaire volumique
Essais accélérés (technologie)
Liants
Résistance à la salissure
Revêtements en bâtiment:Peinture en bâtiment
Transition vitreuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Dirt pick-up is a long-standing issue for exterior architectural coatings. Dirt pick-up resistance (DPR) is highly sought by end users, and significant resources have been committed by paint manufacturers to improve it. The task is complicated by the multitude of regional and local factors such as seasonal weather, intensity of economic activity, or atmospheric particle burden. Typically, paint manufacturers try to control DPR via careful selection of additives and formula optimization. Testing the new formulas in real time is long and, therefore, there is a clear need for a faster and more reliable test that takes into account the key elements of the dirt pick-up mechanism: particle transport, adhesion, and release to/from the surface. Our team has developed an accelerated test that focuses on thermally driven adhesion and takes a fraction of the time necessary for outdoor exposure testing. The test correlates well with early outdoor exposure results when formulation parameters are controlled and when there are moderate-to-large performance differences among paint formulas. The test was used to improve the accelerated DPR of a paint formula, which subsequently was verified against real-time outdoor exposure in three geographic regions with different climates and airborne particulate pollution levels. Note de contenu : - Table 1 : Outdoor exposure sites and conditions
- Table 2 : Composition and characterization of polymeric binders
- Table 3 : Composition of paints having binders with different Tg values
- Table 4 : Coefficients of correlation between outdoor exposure (several months) and accelerated test method (using twenty-four dusting events) for the binder Tg series
- Table 5 : Composition of paints having different PVCs
- Table 6 : Coefficients of correlation between outdoor exposure (several months) and accelerated test method (using twenty-four dusting events) for the PVC series
- Table 7 : Commercial paints (and selected properties) used for the comparison of outdoor exposure and accelerated test
- Table 8 : Impact of crosslinking on film properties
- Table 9 : Paint variables evaluated in the experimental designDOI : https://doi.org/10.1007/s11998-021-00506-9 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00506-9.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36443
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 5 (09/2021) . - p. 1413-1430[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22991 - Périodique Bibliothèque principale Documentaires Disponible Developments in colour space analysis / Brij Mohal in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 204, N° 4596 (05/2014)
[article]
Titre : Developments in colour space analysis Type de document : texte imprimé Auteurs : Brij Mohal, Auteur Année de publication : 2014 Article en page(s) : p. 39-43 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anti-réflectance
Pigments
Réflectivité thermique
Revêtements en bâtiment:Peinture en bâtimentIndex. décimale : 667.6 Peintures Résumé : With the advent of the 21st Century, many challenges and opportunities have arisen. Increased global competition has brought down the prices of speciality pigments that were once were too high for practical use in architectural coatings. Increased legislation for limiting VOCs and the growing consumer awareness of 'green' products has moved the industry toward low or no VOC products in both architectural, as well as industrial coatings. Consumers, when choosing products, are wanting it all - per-formance, quality and colour choice. Consumers want to convey their individuality and colour choice is one of the most expressive ways to accomplish that.
Although colour palettes in general, have grown smaller, since too large a selection makes it difficult to select, it is important to have a wide range of colour types to choose. With the increased competition, product differentiation has become more important. Additionally, with current dispenser technology, that has increased accuracy and more canisters commonly available, the colourant options now available allow for customisation of colourant modules. The colourants offer expansion of colour space in multiple ways: the use of speciality pigments expands the colour palette for façade systems, while maintaining durability. High performance colourants also either maintain or expand colour space, while at the same time increasing the fade resistance. High strength colourants allow for palette expansion by optimising the bases. Probably, one of the strongest statements made in the market are the high opacity colourants.Note de contenu : - Pigment application
- Pigment selection
- IR reflective pigments
- Industrial applications
- Architectural applicationEn ligne : https://drive.google.com/file/d/1sbczD7EbvcjZlolypXL8pkV-8qyUEldQ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21513
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 204, N° 4596 (05/2014) . - p. 39-43[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16262 - Périodique Bibliothèque principale Documentaires Disponible Developments in outdoor powder coatings resins / Uwe Kubillus in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 201, N° 4557 (02/2011)
PermalinkDevelopments towards a hyperdurable powder coating / Roberto Cavalieri in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 202, N° 4577 (10/2012)
PermalinkDifferences between the grinding process of TiO2 pigments glossy acrylics / Artur Palasz in COATINGS TECH, Vol. 19, N° 8 (10/2022)
PermalinkDirect observation of freeze-thaw instability of latex coatings via high pressure freezing and cryogenic SEM / Cheng-Le Zhao in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 3, N° 2 (04/2006)
PermalinkDispersions for high-quality decorative coatings / Laura Bittle in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 202, N° 4572 (05/2012)
PermalinkPermalinkDurability of coatings / Thomas Easton in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 196, N° 4504 (09/2006)
PermalinkEco-friendly way to sustain bright orange shades in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 202, N° 4569 (02/2012)
PermalinkEco-labelling of architectural coatings / David Sykes in EUROPEAN COATINGS JOURNAL (ECJ), N° 5/95 (05/1995)
PermalinkPermalinkEffect of exposure conditions on dirt pickup resistance (DPR) / Michael P. Diebold in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 3 (05-06/2020)
Permalink"Efflorescence" - Substrate wetting additives make a difference / Adamali Motiwala in PAINTINDIA, Vol. LXVI, N° 10 (10/2016)
PermalinkPermalinkEnergy saving pigment / Davide Grotto in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 202, N° 4578 (11/2012)
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