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The protective effects and aging process of the topcoat of intumescent fire-retardant coatings applied to steel structures / Ji Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 1 (01/2016)
[article]
Titre : The protective effects and aging process of the topcoat of intumescent fire-retardant coatings applied to steel structures Type de document : texte imprimé Auteurs : Ji Wang, Auteur Année de publication : 2016 Article en page(s) : p. 143-157 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Essais accélérés (technologie)
IgnifugeantsComposé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface.
Intumescence (chimie)
Polyuréthanes
Revêtements -- Effets du rayonnement ultraviolet
Revêtements -- Finition:Peinture -- Finition
Revêtements protecteurs -- DétériorationIndex. décimale : 667.9 Revêtements et enduits Résumé : The protective effects of a topcoat on an intumescent fire-retardant coating were studied under hydrochloric acid solution corrosion, accelerated UV aging and natural weathering. The protective effects were determined to be appreciable under all the aging conditions. During hydrochloric acid corrosion testing, the coating sample without the topcoat exhibited no fire resistance after immersion for 48 h. When a topcoat was used, the acid solution could not directly corrode the fire-retardant coating. However, the solution was observed to seep into the coating layer from the edges, demonstrating that special attention must be paid to the edges and corners to avoid the pollution source corroding the coating and substrate. Under the accelerated UV aging conditions, the fire-resistant properties of the unprotected coating deteriorated significantly after 20 days of aging due to the hydrolysis and photooxidation of the components. However, the coating with a topcoat exhibited better fire-proof properties, even after 40 days of aging. During the natural weathering process, the fire resistance of the coating without a topcoat significantly decreased after being exposed to the high levels of precipitation and UV radiation that occur during summer. The fire-resistant properties were completely lost after 1 year of aging exposure. However, the protected sample exhibited no distinct changes in the duration of fire resistance. The results of this study remind engineering personnel to pay attention to the deterioration of the coating properties and to take protection measures. Despite slightly decreasing the fire resistance performance and increasing the cost, the protective effect of the topcoat was remarkable. Therefore, a compatible topcoat is considered indispensable for fire-retardant coatings used outdoors to ensure the best long-term fire resistance performance. Note de contenu : - EXPERIMENTAL : Specimen preparation - Aging scenarios - Testing equipment and conditions
- EXPERIMENT RESULTS : The protective effect of the topcoat for the acid corrosion - The protective effect of the topcoat for accelerated UV aging - The protective effect of the topcoat for natural weatheringDOI : 10.1007/s11998-015-9733-9 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-015-9733-9.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25384
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 13, N° 1 (01/2016) . - p. 143-157[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17819 - Périodique Bibliothèque principale Documentaires Disponible Understanding the weathering triad / Allen Zielnik in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 201, N° 4562 (07/2011)
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Titre : Understanding the weathering triad Type de document : texte imprimé Auteurs : Allen Zielnik, Auteur Année de publication : 2011 Article en page(s) : p. 31-32 Langues : Anglais (eng) Catégories : Essais accélérés (technologie)
Revêtements -- Détérioration
Revêtements -- Effets du climat
Revêtements -- Effets de l'humidité
Revêtements -- Effets de la lumière
Revêtements -- Effets de la température
Revêtements -- Effets du rayonnement ultravioletIndex. décimale : 667.9 Revêtements et enduits Résumé : The primary stress factors of heat, light and moisture, in weathering testing.
Basic firefighter training begins with learning the 'fire triad'. Fire requires three elements : fuel, oxygen and an ignition source and the trainees then learn about each in detail. And it is useful in weatherability testing to periodically review the basics as well. The 'weathering triad' consists of the primary stress factors of heat, light and moisture, so have there been any recent advances regarding these three factors in weathering testing techniques or equipment ?
The four main weathering testing techniques (apart from corrosion) are natural outdoor exposures (such as South Florida), accelerated outdoor exposures (eg Emmaqua solar tracking/concentrators) and laboratory accelerated artificial weathering using UV fluorescent lamps with moisture (UVTest) or full solar spectrum xenon arc (Weather-Ometer, Xenotest, Suntest) with controlled temperature and moisture. Of course, each has specific pros and cons regarding cost, time, predictive ability, etc.En ligne : https://drive.google.com/file/d/1aGTW-Dr7Z4vjTNOLQ8oelppvGuH-nzqi/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12260
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 201, N° 4562 (07/2011) . - p. 31-32[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 013224 - Périodique Bibliothèque principale Documentaires Disponible Weathering testing of wind turbine rotor blade coatings / Florian Feil in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 204, N° 4595 (04/2014)
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Titre : Weathering testing of wind turbine rotor blade coatings Type de document : texte imprimé Auteurs : Florian Feil, Auteur Année de publication : 2014 Article en page(s) : p. 18-21 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Eoliennes -- Revêtements protecteurs
Essais accélérés (technologie)
Revêtements -- Effets du rayonnement ultraviolet:Peinture -- Effets du rayonnement ultraviolet
Revêtements:Peinture
Structures offshore -- Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : The annual installation of wind power has increased over the past several years. In the European Union new installations went up from 3.2GW in 2000 to 11.2GW in 20131. However, due to the negative impact of market regulatory and political uncertainties, the growth rates have slowed. Since energy cost and availability is a major driving factor, the current industry focus is on both exploring the fields of effective offshore wind turbines, as well as ways to reduce energy costs. The latter can be solved in two ways - by reducing installation costs but also by increasing turbine efficiency.
Rotor blades have always been the most critical part of a windmill as they have a tremendous impact upon the wind mill's functionality and efficiency. Over the years, different materials have been used in man's attempt to utilise wind as an alternative energy resource. Today, reinforced epoxy composites are primarily used as blade matrix for wind turbines.
The rotor blade must withstand multiple stresses including rain, hall, ice, sand, speed, sunlight, etc. To combat these forces, protective coatings are essential. These days, the projected lifetime of a wind turbine is approximately 25 years. Rotor blade coatings have to maintain their properties within this period, even under these harsh conditions. Anything that can be done to avoid premature failure and to reduce repair work and maintenance of the wind turbine decreases the downtime and, thus, increases efficiency and revenue. Therefore, performance testing is critical for both new and aged blade coatings, making accelerated weathering testing an important part of the development and qualification process of rotor blades.Note de contenu : - MODERN ROTOR BLADE COATINGS
- STANDARDS SITUATION : Wheathering testing of wind turbine rotor blade coatings
- WEATHERING AS CLIMATIC CONDITIONING
- LONG LIFETIME, LOW MAINTENANCEEn ligne : https://drive.google.com/file/d/1Ml_yG5Hgd-wDUAt_TNLX4wxWunizGXoc/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21149
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 204, N° 4595 (04/2014) . - p. 18-21[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16200 - Périodique Bibliothèque principale Documentaires Disponible