Assessment of various analytical techniques on naturally weathered paints as a predictor of long-term gloss retention for waterborne acrylic architectural paints / Matthew S. Gebhard in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 3, N° 1 (01/2006)

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 3, N° 1 (01/2006) . - p. 15-27 Titre : Assessment of various analytical techniques on naturally weathered paints as a predictor of long-term gloss retention for waterborne acrylic architectural paints Type de document : texte imprimé Auteurs : Matthew S. Gebhard, Auteur ; Michael B. Clark, Auteur ; Kenneth. F. Willey, Auteur ; Robert F. Antrim, Auteur ; Francis V. Acholla, Auteur ; John B. Newman, Auteur ; Kristin Weidemaier, Auteur Année de publication : 2006 Article en page(s) : p. 15-27 Note générale : bibliogr. Langues : Américain (ame) Catégories : Colloides Durée de vie (Ingénierie) Essais accélérés (technologie) Formulation (Génie chimique) Latex Polyacryliques Revêtements -- Analyse:Peinture -- Analyse Revêtements décoratifs:Peinture décorative Revêtements en bâtiment -- Détérioration:Peinture en bâtiment -- Détérioration Revêtements en phase aqueuse:Peinture en phase aqueuse Revêtements organiques Index. décimale : 667.6 Peintures Résumé : Gloss retention of waterborne acrylic architectural paints is one of many properties defining exterior durability. Assessing gloss retention is a time consuming process, and accelerated weathering protocols (Weather-Ometer®) typically have poor correlation with natural exposures for this class of paints. The recent development of new analytical techniques for assessing automotive paint durability raises the possibility of detecting subtle changes in short-term natural exposures that would be predictive of long-term gloss retention; however, extension to architectural paints has yet to be demonstrated. To test the concept, seven paints based on different aqueous emulsion polymers were exposed to natural weathering at the same time for 12 weeks at the Paint Quality Institute (PQI) test site, and were then examined using scanning probe microscopy, optical profilometry, chemiluminescence, XPS, and FTIR. These paints were also exposed for 1000 hr in a Weather-Ometer (WOM). Scanning probe microscopy, optical profilometry, chemiluminescence, FTIR, and the WOM results all showed poor correlation with 96-week natural exposure at the PQI test site. The lack of correlation for the WOM results emphasizes the crucial importance of using natural weathering to assess gloss retention. In contrast, the XPS shows some promise for qualitatively predicting subsequent gloss loss and appears worthy of further exploration. As employed here, the XPS was used to monitor the ratio of pigment (Al, Si, and Ti) to carbon coming from the TiO2 in the top few nanometers of the paint surface. A correlation (R2 = 0.731) was found between gloss retention after 96 weeks and the change (2 versus 12 weeks of exposure) in pigment to carbon ratio. This correlation is probably sufficient to rank a series of paints and allow for an assessment against well-established controls. While promising, XPS has some issues. Surface contamination, equipment expense, the considerable expertise required, and precision make utility for screening less than ideal. Note de contenu : - GLOSS RETENTION - ALTERNATIVE APPROACH TO PREDICTING GLOSS RETENTION - APPROPRIATE ANALYTICAL METHODS FOR ASSESSING COATING DEGRADATION : Scanning probe microscopy - Optical profilometry - Chemiluminescence - Photoacoustic spectroscopy - X-ray photoelectron spectroscopy - ASSESSMENT PROTOCOL - EXPERIMENTAL DETAILS : Paint formulations - Gloss measurements - Scanning probe microscopy - Optical profilometry - Chemiluminescence - Photoacoustic spectra - X-ray photoelectron spectroscopy - RESULTS AND DISCUSSION : Gloss - Weather-ometer - Surface topography - Chemiluminescence - PAS - XPS - Table 1 : Paint formulatio used to prepara paints using the seven emulsion polymers - Table 2 : Initial 60° gloss values for the paints based on the seven latex emulsion polymers - Table 3 : PAS-FTIR parameters Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3709 [article]

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Breaking the mould / John Gillatt in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 193, N° 4469 (10/2003)

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 193, N° 4469 (10/2003) . - p. 21-25 Titre : Breaking the mould Type de document : texte imprimé Auteurs : John Gillatt, Auteur Année de publication : 2003 Article en page(s) : p. 21-25 Langues : Anglais (eng) Catégories : Algicides Antifongiques Antimicrobiens Revêtements en bâtiment -- Détérioration:Peinture en bâtiment -- Détérioration Revêtements en bâtiment:Peinture en bâtiment Index. décimale : 667.9 Revêtements et enduits Résumé : Changing labelling regulations require new ideas and the introduction of new blends of biocides. The author explores the strategies for decontamination. Of the three main groups of microorganims that can infect paints, plasters and similar surface coatings it is fungi and algae that are especially problematic after the material has been applied. Fungi cause surface disfigurement and actual degradation, while algae also detract from the product's aesthetic qualities as well as retaining high levels of moisture with resultant damaging effects. Exterior surfaces can become infected with both types of organisms and broad-spectrum antifungal or antialgal biocides have been developed to prevent such growths. However, changing legislation relating to the labelling of such biocides, pressure from environmental and consumer groups and revised regulations concerning insulation of buildings, have placed greater and greater demands on biocides and have created a need for new products with novel properties. Note de contenu : - Specialist requirements - Microorganisms on coatings - Effects of fungi and algae - Preventio, methods - Surface coating biocides - Biocides for dry-film protection - Changing Demands - Evironmental/ consumer pressure - Changed building construction - Better insulation, worse growth - New properties for biocides - Development of new biocides - Discolouration - Greater demands on products - FIGURES : 1. (far below) ; Fungi and algae can deface buildings even in cold conditions, while humid climates are a natural heaven for orgnaisms (Figure 2 below), and can even create a plafromr for the growth of higher plants (Figure 3) - 4. Cavity wall and ETICS wall structures showing heat transfer processes - 5. Reduced leaching of silica adsorbed OIT from a paint film - 6. Delta B values for five biocides - TABLES : 1. Predominant fungi and algae found in sites around the world - 2. Properties required of a surface coating biocide - 3. Fungicides and algicides for surface coatings - 4. Minimum inhibitory concentration (MICs) of four fungicides - 5. Disadvantages of dry-film fungicide active agents - 6. Fungal and algal efficiency tests with two biocides blends Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27826 [article]

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Development and deployment of a high throughput exterior durability program for architectural paint coatings / Edward A. Schmidt in COATINGS TECH, Vol. 6, N° 7 (07-08/2009)  

[article]  inCOATINGS TECH > Vol. 6, N° 7 (07-08/2009) . - p. 26-30 Titre : Development and deployment of a high throughput exterior durability program for architectural paint coatings Type de document : texte imprimé Auteurs : Edward A. Schmidt, Auteur Année de publication : 2009 Article en page(s) : p. 26-30 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Contraintes (mécanique) Echantillonnage Revêtements en bâtiment -- Détérioration:Peinture en bâtiment -- Détérioration Index. décimale : 667.9 Revêtements et enduits Résumé : This article describes a new high throughput system for evaluating the exterior durability of architectural coatings undergoing natural weathering. The motivation for the design and deployment of this system is the ability to better understand the range and distribution of "real world" performances by testing more exposure scenarios than would be possible by traditional means. The system integrates inventory management, sample handling, and tracking with automated data acquisition, analysis, and archival capabilities including the use of environmental sensors, machine vision, and informatics. One of the unique characteristics of this system is that it not only facilitates the evaluation of more samples per unit time per unit resource compared to traditional methods, but it also produces more objective data per sample analysis. En ligne : https://drive.google.com/file/d/1H0teFyvKjXnqaeAss1CAYGnOKG2894ZQ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6110 [article]

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Exposure studies of exterior house paints containing kaolin clay pigments / Thad T. Broome in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 69, N° 874 (11/1997)

[article]  inJOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 69, N° 874 (11/1997) . - p. 13-28 Titre : Exposure studies of exterior house paints containing kaolin clay pigments Type de document : texte imprimé Auteurs : Thad T. Broome, Auteur Année de publication : 1997 Article en page(s) : p. 13-28 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Essais accélérés (technologie) Kaolin Pigments inorganiques Revêtements -- Effets du climat:Peinture -- Effets du climat Revêtements en bâtiment -- Détérioration:Peinture en bâtiment -- Détérioration Revêtements en bâtiment:Peinture en bâtiment Revêtements en phase aqueuse:Peinture en phase aqueuse Index. décimale : 667.9 Revêtements et enduits Résumé : This paper presents data on performance of pigments in latex exterior house paints derived from kaolin. The paints were prepared containing several such pigments and were exposed to the weather at four locations for two to six years. Note de contenu : - EXPERIMENTAL : Selection of formula ingredients - Basic formulations - Control paints - Extender pigment combinations - Primers - Characterization of paints - Preparation and evaluation of exposure panels - Statistical analysis of data - RESULTS AND DISCUSSION : Ratings of exposure panels and test wall areas - Statistical comparisons of extender pigments - Comparison of performance of vinyl paints after two-years exposure at different sites - Statistical comparison of resins - Comparison with results of earlier investigators - Scrub resistance and exterior performance Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18300 [article]

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New biodétérioration evaluation methods for façade coatings / C. Messal in SURFACE COATINGS INTERNATIONAL, Vol. 92, 3 (06/2009)  

[article]  inSURFACE COATINGS INTERNATIONAL > Vol. 92, 3 (06/2009) . - p. 113-116 Titre : New biodétérioration evaluation methods for façade coatings Type de document : texte imprimé Auteurs : C. Messal, Auteur Année de publication : 2009 Article en page(s) : p. 113-116 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Biodégradation Revêtements en bâtiment -- Détérioration:Peinture en bâtiment -- Détérioration Index. décimale : 667.6 Peintures Résumé : Inspection of many façades show green and grey-black coloured biofilms, which can occur within some months after refurbishing or painting. Many new materials, especially in composite insulation systems, have a lower heat storage capacity than monolithic walls. They cool down easily and extremely rapidly when they are no longer directly exposed to solar radiation. This results in condensation of humidity at the surfaces, which can stay wet for several hours per day. En ligne : https://drive.google.com/file/d/1TbEih5c6XWlO4xPNhc8ia7258R1aPXpB/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6463 [article]

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Paint problem solver / Paint & decorating retailers association / Saint-Louis [Etats-Unis] : Paint & Decorating Retailers Association (2000)

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La pathologie des peintures dans le bâtiment et la construction industrielle / Jean-Louis Rabaté / Paris : Editions Le Moniteur (1983)

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