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Airport jet fuel piping lining issues / Rick A. Huntley in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 35, N° 2 (02/2018)
[article]
Titre : Airport jet fuel piping lining issues Type de document : texte imprimé Auteurs : Rick A. Huntley, Auteur ; Cynthia O'Malley, Auteur Année de publication : 2018 Article en page(s) : p. 12-16 Langues : Américain (ame) Catégories : Amines Une amine est un composé organique dérivé de l'ammoniac dont certains hydrogènes ont été remplacés par un groupement carboné. Si l'un des carbones liés à l'atome d'azote fait partie d'un groupement carbonyle, la molécule appartient à la famille des amides. Découvertes en 1849, par Wurtz les amines furent initialement appelées alcaloïdes artificiels.
On parle d'amine primaire, secondaire ou tertiaire selon que l'on a un, deux ou trois hydrogènes substitués.
Par exemple, la triméthylamine est une amine tertiaire, de formule N(CH3)3.
Typiquement, les amines sont obtenues par alkylation d'amines de rang inférieur. En alkylant l'ammoniac, on obtient des amines primaires, qui peuvent être alkylées en amines secondaires puis amines tertiaires. L'alkylation de ces dernières permet d'obtenir des sels d'ammonium quaternaire.
D'autre méthodes existent : 1. Les amines primaires peuvent être obtenues par réduction d'un groupement azoture, 2. Les amines peuvent aussi être obtenues par la réduction d'un amide, à l'aide d'un hydrure, 3. L'amination réductrice permet l'obtention d'amines substituées à partir de composés carbonylés (aldéhydes ou cétones), 4. Les amines primaires peuvent être obtenues par la réaction de Gabriel.
Analyse des défaillances (fiabilité)
Délaminage
Epoxydes
Expertises
Phénoplastes
Primaire (revêtement)
Revêtements -- Défauts:Peinture -- Défauts
Revêtements -- Détérioration:Peinture -- Détérioration
TuyauterieIndex. décimale : 667.9 Revêtements et enduits Résumé : An international airport was in the midst of an expansion project. As part of the project, 24-inch-diameter jet fuel piping was being installed by a subcontractor hired by the general contractor that was directly hired by the owner to manage the project. The piping manufacturer installed both the interior and exterior linings. According to the specification, the interior of the pipes was required to be abrasive blast-cleaned to an SSPC-SP 10/NACE No. 2 Near-White Blast Cleaning finish. Additionally, according to the specification, “The standard required at the time of lining shall be a minimum of ISO 8501-1 grade Sa 2 1/2, with a surface profile of 70 ± 20 microns peak-to-trough height.
The coating system specified for application to the interior of the piping system was a phenolic lining. According to the product data sheet, the lining material was an amine-cured, modified epoxy-phenolic. The primer’s solids content was approximately 65 percent by volume and the finish coat’s solids content was approximately 63 percent. Both coats had a recommended dry film thickness of 100-to-150 microns per coat. The specification required that the coating be applied in two coats at a dry film thickness of 125 microns per coat. The first 50 mm of the ends of the pipes were required to be left bare.
The pipes were manufactured by a different company than the contracted company that was responsible for abrasive blast-cleaning and coating. After application of the interior coating, the pipes were transferred to a protected curing area. The interior of the curing area was heated with portable heaters.
The pipes were delivered to the jobsite at the airport in three lots, referred to as Lot 1, Lot 2 and Lot 3. During installation of the pipes, no additional preparation or coating was required to be performed at the welded seams. Sometime after the pipes were shipped to the jobsite, a number of the pipes in Lot 2 had been placed in trenches and were exposed to flooding conditions that partially or fully exposed the pipes to muddy water. Most of the pipes that were exposed to the floodwater were subsequently cleaned with fresh water to remove sand and other contaminants.
After the pipes had been exposed to the water, a video survey was performed to determine the condition of the interior coatings and to determine whether contaminants had been removed. It was discovered that the coating had blistered and delaminated in several areas. The delamination was most prevalent at the first several centimeters of the coating at the edges of the pipes.Note de contenu : - Table : Pieces of pipe examined during field visit
- Fig. 1. Rust staining on the surface of the lining
- Fig. 2. An exudate is visible on the surface of the primer
- Fig. 3. Cracking pattern on primer consisting of traces of the gray topcoat
- Fig. 4. Good adhesion of the coating on Lot 1 pipe
- Fig. 5. Cracking pattern on topcoat and primer
- Fig. 6. Rust staining could be scraped away with a knifeEn ligne : http://www.paintsquare.com/archive/index.cfm?fuseaction=view&articleid=6244 Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30372
in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 35, N° 2 (02/2018) . - p. 12-16[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19720 - Périodique Bibliothèque principale Documentaires Disponible An exploration of enhancing thermal stability of leather by hydrophilicity regulation : effect of hydrophilicity of phenolic syntan / Sun Qingyong in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 4 (Année 2022)
[article]
Titre : An exploration of enhancing thermal stability of leather by hydrophilicity regulation : effect of hydrophilicity of phenolic syntan Type de document : texte imprimé Auteurs : Sun Qingyong, Auteur ; Zeng Yunhang, Auteur ; Yue Yu, Auteur ; Ya-Nan Wang, Auteur ; Bi Shi, Auteur Année de publication : 2022 Article en page(s) : 10 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Analyse
Cuirs et peaux -- Teneur en eau
Dynamique moléculaire
Hydrophobie
Phénoplastes
Retannage
Simulation, Méthode de
Stabilité thermique
SyntansIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Effect of retanning on the thermal stability of leather is eliciting increasing attention. However, the relationship between the hydrophilicity of retanning agents and the heat resistance of leather and the corresponding mechanism remain unclear. Herein, phenolic formaldehyde syntans (PFSs) were selected as models to explore the effect of the hydrophilicity of retanning agents on the thermal stability of retanned leather. The thermal stability of leather was closely correlated to the hydrophilic group content (sulfonation degree) of PFSs. As the sulfonation degree increased, the water absorption rate of PFSs and their retanned leathers decreased, whereas the thermal stability of leather increased. Molecular dynamics simulation results proved that the introduction of PFSs could reduce the binding ability of collagen molecules with water and thus decreased the water molecules around the PFS-treated collagen. These results may provide guidance for the tanners to select retanning agents reasonably to improve the thermal stability of leather. Note de contenu : - EXPERIMENTAL : Materials - Water adsorption behavior of PFSs - Retanning experiments - Analysis of leather - MD simulation
- RESULTS AND DISCUSSION : Effect of DS on the water adsorption behavior of PFSs - Effect of DS on the water adsorption of PFSs retanned leather - Effect of DS on the thermal stability of PFSs retanned leathers
- Table 1 : Retanning and fatliquoring processes
- Table 2 : Sequence of the collagen peptide used for constructing collagen model
- Table 3 : Simulation details
- Table 4 : Adsorption kinetics parameters fitted by the pseudo-second-order rate model
- Table 5 : Weight loss of PFSs retanned leathers and control leather at different stages and residual weightDOI : https://doi.org/10.1186/s42825-022-00096-1 En ligne : https://link.springer.com/content/pdf/10.1186/s42825-022-00096-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38217
in JOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 4 (Année 2022) . - 10 p.[article]
[article]
Titre : Blending hard and soft : Polybutadiene enhances toughness and resistance of phenolic resin Type de document : texte imprimé Auteurs : Hermant Kumar, Auteur ; S. K. Tripathi, Auteur ; Sukhen Mistry, Auteur Année de publication : 2009 Article en page(s) : p. 32-34 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Fourier, Spectroscopie infrarouge à transformée de
Nanoparticules
Phénoplastes
Polybutadiène
Résistance chimiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : An o-cresol base novolac-type phenolic resin was prepared and blended with defferent weight ratios of carboxyl-terminated polybutadiene (cTPB) liquid rubber. Addition of CTPB reduced the curing time and improved both chemical resistance and physical properties. En ligne : https://drive.google.com/file/d/1gXDmFaIW5BzKSYfQwWHMTRDLwTQvJAx-/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6287
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 10/2009 (10/2009) . - p. 32-34[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011633 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Boot top paints : In the ocean of marine paints - II Type de document : texte imprimé Auteurs : Mukund Hulyalkar, Auteur Année de publication : 2014 Article en page(s) : p. 112 Langues : Anglais (eng) Catégories : Formulation (Génie chimique)
Marines (peinture)
Phénoplastes
PolyalkydesIndex. décimale : 667.7 Cires, laques, vernis Résumé : Due to the recent fire cases we explained about the fire retarding paints in last issues. Now we are continuing our marine paint series. Our current topic is boot top paints.
Note de contenu : - Table : Boot top varnish formulation En ligne : https://drive.google.com/file/d/1K4-M9Vty5wqwLDLGYZs05DV7qb3njvpO/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35295
in PAINTINDIA > Vol. LXIV, N° 1 (01/2014) . - p. 112[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16242 - Périodique Bibliothèque principale Documentaires Disponible Carbon/phenolic nanocomposites for ablative applications / J. S. Tate in SAMPE JOURNAL, Vol. 47, N° 3 (05-06/2011)
[article]
Titre : Carbon/phenolic nanocomposites for ablative applications Type de document : texte imprimé Auteurs : J. S. Tate, Auteur ; D. Kabakov, Auteur ; J. H. Koo, Auteur Année de publication : 2011 Article en page(s) : p. 36-43 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Composites à fibres -- Moulage par compression
Composites à fibres de carbone
Matériaux -- Imprégnation
Matériaux hybrides
Nanotubes de carbone à parois multiplesUn nanotube de carbone multifeuillet est constitué de plusieurs feuillets de graphènes enroulés les uns autour des autres. Il existe deux modèles pour décrire la structure des nanotubes multifeuillets :
- le modèle poupée russe: les plans de graphène sont arrangés en cylindres concentriques ;
- le modèle parchemin: un seul feuillet de graphène est enroulé sur lui-même, comme une feuille de papier.
PhénoplastesIndex. décimale : 620.1 Mécanique de l'ingénieur (mécanique appliquée) et matériaux Résumé : The major goal of this study is to evaluate the effects of multi-walled carbon nanotubes (MWNT) on ablation performance of carbon/phenolic nanocomposites. MWNT will be blended into phenolic resin using high-shear mixing technique to ensure exfoliation of nanoparticles. Loadings of 0, 1, 2, and 3wt% of MWNT will be dispersed in the phenolic resin. Test panels of 120- x 120- x 12.6-mm carbon reinforced composites will be manufactured from prepregs using compression molding. Test specimens will be cut into proper size by using abrasive water-jet cutting. Further, Simulated Solid Rocket Motor (SSRM) testing facility will be used to examine ablative properties of these phenolic-MWNT nanocomposites with flame temperature about 2,200°C. These results will be compared to an industry standard ablative MX-4926 MC (carbon phenolic composite) manufactured by Cytec Engineered Materials. Control composites (0wt% MWCNT) were manufactured using prepregs and compression molding. Preliminary studies were conducted using radiant heat panel at heat flux of 15 kW/m2. These results demonstrated promising results. This paper mainly discusses manufacturing method and radiant panel testing on control composites. Note de contenu : - EXPERIMENTAL : Material system - Compression molding - Radiant panel testing - Temperature measurements - High shear technique
- RESULTS : Manufacturing processPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11759
in SAMPE JOURNAL > Vol. 47, N° 3 (05-06/2011) . - p. 36-43[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 013029 - Périodique Bibliothèque principale Documentaires Disponible CNSL : an environment friendly alternative for the modern coating industry / Dinesh Balgude in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 2 (03/2014)
PermalinkComposite materials ready to replace aluminium in internal combustion engines / Hendrik de Keyser in JEC COMPOSITES MAGAZINE, N° 102 (01-02/2016)
PermalinkConductive and highly filled / Raffaele Gilardi in KUNSTSTOFFE INTERNATIONAL, Vol. 105, N° 8 (08/2015)
PermalinkDeciphering the role of individual retanning agents on physical properties of leathers / Murali Sathish in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 3 (03/2019)
PermalinkDevelopment of composites of highly filled phenol formaldehyde resin - coconut (cocos nucifera) endocarp particles / E. C. Lengowski in INTERNATIONAL POLYMER PROCESSING, Vol. XXIX, N° 4 (08/2014)
PermalinkDry nitrile-phenolic adhesives / Steve Dominak in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 19, N° 9 (09/2012)
PermalinkEffect of phenol concentration on cure and epoxide equivalent weight (EEW) of cardanol based epoxidized novolac type phenolic resins / Priti Shukla in PAINTINDIA, Vol. LX, N° 9 (09/2010)
PermalinkLes fibres phénoliques in L'INDUSTRIE TEXTILE, N° 1302 (10/1998)
PermalinkFight the phenol / John Myers in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 36, N° 1 (01/2019)
PermalinkFRP parts for internal combustion engines / Lars-Fredrik Berg in JEC COMPOSITES MAGAZINE, N° 98 (07-08/2015)
PermalinkMore durable epoxy bonds to wood with hydroxymethylated resorcinol coupling agent / Charles B. Vick in ADHESIVES AGE, Vol. 40, N° 8 (07/1997)
PermalinkMorphology and photoluminescence properties of phenolic epoxy resin coating on KH550-modified SrAl2O4: Eu2+, Dy3+ powder in the presence of triarylsulfonium hexafluoroantimonate / Jing Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 6 (11/2016)
PermalinkNatural weathering performance and the effect of light stabilizers in water-based coating formulations on resin-modified and dye-stained beech-wood / Bodo Caspar Kielmann in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 6 (11/2016)
PermalinkPhenolic prepreg is welcome aboard Bombardier's passenger trains / Richard Horn in JEC COMPOSITES MAGAZINE, N° 69 (11-12/2011)
PermalinkPhenolic resins / A. A. K. Whitehouse / London [United Kingdom] : The Plastics Institute (1967)
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