Accueil
JOURNAL OF COATINGS TECHNOLOGY (JCT) . Vol. 73, N° 915Mention de date : 04/2001Paru le : 09/05/2001 |
Dépouillements
Ajouter le résultat dans votre panierNanostructured silicon sol-gel surface treatments for Al 2024-T3 protection / A. J. Vreugdenhil in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 915 (04/2001)
[article]
Titre : Nanostructured silicon sol-gel surface treatments for Al 2024-T3 protection Type de document : texte imprimé Auteurs : A. J. Vreugdenhil, Auteur ; M. S. Donley, Auteur ; V. N. Balbyshev, Auteur Année de publication : 2001 Article en page(s) : p. 35-43 Note générale : Bibliogr. Langues : Américain (ame) Tags : Protection corrosion Traitement surface Procédé sol gel Industrie aéronautique Application Nanostructure Réticulant Morphologie Alliage base aluminium Al93Cu4Mg2Mn1 Al Cu Mg Mn AA 2024 Index. décimale : 667.9 Revêtements et enduits Résumé : Current coatings for aircraft corrosion protection are based on chromate surface treatments, primers, and topcoats. One approach to developing a chromate-free surface treatment is through the use of sol-gel materials that interact strongly with both the substrate and the subsequent polymer layers. Results are reported here on a new sol-gel technique using a pre-formed, self-assembled, nano-phase particle (SNAP) sol-gel system. SNAP films have been investigated by infrared spectroscopy, atomic force microscopy, and electrochemical methods. Potentiodynamic polarization and electrochemical impedance spectroscopy demonstrated that the SNAP system generates high quality, defect-free, durable films. Formulation parameters, including crosslink density and coupling agent application, were optimized based on experimental results. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5724
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 73, N° 915 (04/2001) . - p. 35-43[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001223 - Périodique Bibliothèque principale Documentaires Disponible Novel coatings from soybean oil phosphate ester polyols / Bin Zhong in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 915 (04/2001)
[article]
Titre : Novel coatings from soybean oil phosphate ester polyols Type de document : texte imprimé Auteurs : Bin Zhong, Auteur ; John L. Massingill, Auteur ; Maruf Rahim, Auteur ; Chirag Shaw, Auteur Année de publication : 2001 Article en page(s) : p. 53-57 Note générale : Bibliogr. Langues : Américain (ame) Tags : Matériau revêtement Peinture Formulation Liant Corps gras végétal Huile soja Ester Polyol Phosphate organique Epoxydation Alkyde résine Propriété physique mécanique Feuil Etude expérimentale Index. décimale : 667.9 Revêtements et enduits Résumé : Novel coatings with excellent properties have been formulated from polyols derived from the renewable resource soybean oil. Partially and fully epoxidized soybean oils (ESBO) were converted to novel soybean oil phosphate ester polyols (SOPEP) which were successfully incorporated into solventborne and waterborne bake coatings. Thermally cured waterborne alkyd coatings were produced with improved coating adhesion, low volatile organic compounds (VOC), excellent impact resistance, good hardness, less severe curing conditions, and lower cost. Solventborne alkyd coatings gave similar results. Soybean oil phosphate ester polyols appear to offer the coatings industry a low cost route to tough, durable, environmentally compliant, high performance coatings. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5725
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 73, N° 915 (04/2001) . - p. 53-57[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001223 - Périodique Bibliothèque principale Documentaires Disponible Influence of additives on interfacial phenomena during film formation of powder coatings / Petra Uhlmann in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 915 (04/2001)
[article]
Titre : Influence of additives on interfacial phenomena during film formation of powder coatings Type de document : texte imprimé Auteurs : Petra Uhlmann, Auteur ; K. Grundke, Auteur Année de publication : 2001 Article en page(s) : p. 59-65 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Formation de film
Interfaces solide-liquide
Revêtement poudre -- Additifs:Peinture poudre -- Additifs
Rhéologie
Tension superficielle
ViscositéIndex. décimale : 667.9 Revêtements et enduits Résumé : Film formation of powder coatings is illuminated from a physico-chemical point of view. Significant parameters influencing the film formation of powder coatings are surface (wetting) tension and viscosity of the polymer melt formed during the film formation process. A newly developed measuring device for the investigation of wetting at elevated temperatures is presented. This devise allows systematic investigations of the temperature dependence of the wetting tension of powder coating binder systems. By combining analytical and surface tension measurements, it was possible to gain new information about the mechanism of action of additives in these melts. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5726
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 73, N° 915 (04/2001) . - p. 59-65[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001223 - Périodique Bibliothèque principale Documentaires Disponible Digital system for detecting, classifying, and fast retrieving corrosion generated defects / S. T Kyvelidis in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 915 (04/2001)
[article]
Titre : Digital system for detecting, classifying, and fast retrieving corrosion generated defects Type de document : texte imprimé Auteurs : S. T Kyvelidis, Auteur ; N. Kouloumbi, Auteur ; L. Lykouropoulos, Auteur Année de publication : 2001 Article en page(s) : p. 67-73 Note générale : Bibliogr. Langues : Américain (ame) Tags : Matériau revêtement Peinture Corrosion Défaut Détection défaut Classification Système numérique Analyse image Index. décimale : 667.9 Revêtements et enduits Résumé : The in-situ assessment of the degradation of a coating system is often difficult, especially in cases such as underwater piping systems. Furthermore, the results of the optical inspection are qualitative and subjective. The use of digital image processing and storing of corrosion images in databases can eliminate such problems and enhance the assessment of the coating degradation characteristics.
Digital defect detection systems have been used in the industrial domain for the last 20 years to automatically detect and classify defects on various surfaces, such as wood, steel, and textiles, using image processing techniques and decision-making theory.
The proposed system processes digitized images of corroded surfaces by applying similar technologies (digital filters, texture analysis, segmentation techniques, and fuzzy decision algorithms) to automatically identify and classify corrosion generated defects, such as blisters, rust, etc. Furthermore, it employs state-of-the-art database techniques specialized for image content (query by example, content-based retrieval) to effectively store and retrieve these images according to their specific features.Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5727
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 73, N° 915 (04/2001) . - p. 67-73[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001223 - Périodique Bibliothèque principale Documentaires Disponible Next generation of aircraft coatings systems / Gordon P. Bierwagen in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 73, N° 915 (04/2001)
[article]
Titre : Next generation of aircraft coatings systems Type de document : texte imprimé Auteurs : Gordon P. Bierwagen, Auteur Année de publication : 2001 Article en page(s) : p. 45-52 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aluminium -- Alliages
Anticorrosifs
Anticorrosion
Avions -- Revêtements:Avions -- PeintureIndex. décimale : 667.9 Revêtements et enduits Résumé : The current generation of aircraft coatings had its basis in the polymer technologies of the 1970s and the use of chromate-based metal pretreatments and primers. There have been some incremental improvements in the epoxy and polyamide oligomers used in the primers as well as the isocyanates and flexible polyols used in topcoats, plus increases in the volume solids of the coatings to continue minimally meeting environmental requirements, but no truly new technologies have been developed and applied to aircraft coatings since that time. However, because of increasing economic and environmental pressures, this situation will soon change. Also, the U.S. Air Force is seeking a coating system that will have an ultimate lifetime of 30 years for maintenance cost control and fleet sustainability. The first change in the present coatings system will be in the pretreatments plus primers that currently constitute the metal protection system for the high strength Al alloys used for aircraft. For military aircraft, these alloys will continue to be Al 2024 T-3 and Al 7075-T6, heat-treated metals that have phase-separated regions rich in reactive metals such as Cu, Mg, and Zn. There are several new technologies now under consideration for such metal protection including conductive polymers as primers without Cr-based metal pretreatments, sol-gel based pretreatments and primers, plasma polymer metal pretreatments, and organo-modified aluminum oxide particles. Each of these technologies has shown some promise for Cr replacement, but each presently has a weakness that needs to be corrected for immediate usage. For the topcoat system, fluorinated polyols and improved use of UV-absorbers and light stabilizers will probably be the first changes implemented, with ceramer and other new crosslinking systems the most likely next polymer matrix candidates. The target for the entire coatings system is to have drastically improved wet-adhesion due to a covalently bonded system that has a gradient in composition that goes continuously from metal to metal oxide to mixed metal oxlde/organic polymet to high-performance UV-stable organic polymer. The materials cost for such a system may be quite high, but the maintenance cost savings will much more than offset these costs. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5752
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 73, N° 915 (04/2001) . - p. 45-52[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001223 - Périodique Bibliothèque principale Documentaires Disponible
Exemplaires (1)
Code-barres | Cote | Support | Localisation | Section | Disponibilité |
---|---|---|---|---|---|
001223 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |