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High-solids systems based on silicone-epoxy hybrid resins / Chris Howard in SURFACE COATINGS INTERNATIONAL, Vol. 92, 1 (02/2009)
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Titre : High-solids systems based on silicone-epoxy hybrid resins Type de document : texte imprimé Auteurs : Chris Howard, Auteur ; A. Bartek, Auteur ; Markus Hallack, Auteur ; U. Schiemann, Auteur Année de publication : 2009 Article en page(s) : p. 23-24 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Blanc (couleur)
Copolymère silicone époxy
Formulation (Génie chimique)
Haut extrait sec
Pigments
Primaire (revêtement)
Revêtements organiques
ZincIndex. décimale : 667.9 Revêtements et enduits Résumé : Climate changes caused by global warming and the greenhouse effect are likely to produce even more corrosive conditions in the future because higher temperatures accelerate corrosion, and greater concentrations of carbon dioxide will increase carbonation rates and the acidity of rainfall. Corrosin is responsible for the failure of many systems and structures. Unchecked, it can result in excessive maintenance and repairs as well as system downtime and product contamination. Note de contenu : - Silicone-epoxy hybrid systems
- Formulation of silicone-epoxy hybrid coatings : Pigments and fillers - Solvents
- Table 1 : Tests on different white pigments, based on the same white formulation, ref 4005
- Table 2 : Guide formulation (white) RR 4005
- Table 3 : Formulation (2007 E 038) for a zinc-rich primer based on a silicone-epoxy hybrid resinEn ligne : https://drive.google.com/file/d/1VRqOa5nHHT0rGBiiCOLhXhP3guBFxpqY/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37324
in SURFACE COATINGS INTERNATIONAL > Vol. 92, 1 (02/2009) . - p. 23-24[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011145 - Périodique Bibliothèque principale Documentaires Disponible 011715 - Périodique Bibliothèque principale Documentaires Disponible High-strength and high-toughness spray-type polyurea coating for impact protection of aluminum sheet / Hui Guo in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 6 (11/2023)
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Titre : High-strength and high-toughness spray-type polyurea coating for impact protection of aluminum sheet Type de document : texte imprimé Auteurs : Hui Guo, Auteur ; Mingsheng Yin, Auteur ; Xiao Lv, Auteur ; Yu Chen, Auteur ; Minqian Sun, Auteur Année de publication : 2023 Article en page(s) : p. 2053-2068 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aluminium L'aluminium est un élément chimique, de symbole Al et de numéro atomique 13. C’est un métal pauvre, malléable, de couleur argent, qui est remarquable pour sa résistance à l’oxydation13 et sa faible densité. C'est le métal le plus abondant de l'écorce terrestre et le troisième élément le plus abondant après l'oxygène et le silicium ; il représente en moyenne 8 % de la masse des matériaux de la surface solide de notre planète. L'aluminium est trop réactif pour exister à l'état natif dans le milieu naturel : on le trouve au contraire sous forme combinée dans plus de 270 minéraux différents, son minerai principal étant la bauxite, où il est présent sous forme d’oxyde hydraté dont on extrait l’alumine. Il peut aussi être extrait de la néphéline, de la leucite, de la sillimanite, de l'andalousite et de la muscovite.
L'aluminium métallique est très oxydable, mais est immédiatement passivé par une fine couche d'alumine Al2O3 imperméable de quelques micromètres d'épaisseur qui protège la masse métallique de la corrosion. On parle de protection cinétique, par opposition à une protection thermodynamique, car l’aluminium reste en tout état de cause très sensible à l'oxydation. Cette résistance à la corrosion et sa remarquable légèreté en ont fait un matériau très utilisé industriellement.
L'aluminium est un produit industriel important, sous forme pure ou alliée, notamment dans l'aéronautique, les transports et la construction. Sa nature réactive en fait également un catalyseur et un additif dans l'industrie chimique ; il est ainsi utilisé pour accroître la puissance explosive du nitrate d'ammonium.
Analyse des défaillances (fiabilité)
Essais de résilience
Métaux -- Revêtements protecteurs
Polyurée
Résistance au chocs
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : This study aims to synthesize polyurea coating material with superior impact resistance for protecting aluminum sheets. Polyurea was synthesized with various ratios of amino-terminated polyether and amine chain extender using the semi-prepolymer method. The optimal composition ratio of polyurea with excellent impact resistance was determined by comparing the basic properties and the quasi-static and dynamic tensile mechanical properties of polyurea. A high-strength and high-toughness polyurea was applied to the aluminum sheet's surface using a high-temperature and high-pressure spraying machine, resulting in a polyurea-coated aluminum sheet. Its protective performance was tested under impact load using split Hopkinson pressure bar method. The effects of different polyurea coating methods on the failure morphology, velocity effect, and energy dissipation law of aluminum sheets were analyzed to guide the engineering application. The research findings demonstrate that coating polyurea on aluminum sheets' front face (load-receiving face) can alleviate stress concentration during the impact process of flat warheads on aluminum sheets and improve the punching shear resistance of aluminum structures. The critical velocity of aluminum sheets can be improved by coating polyurea on the front face and both faces. Moreover, polyurea coating on the load-receiving face of aluminum sheets can improve energy consumption efficiency. The impact resistance of aluminum sheets with different hardness polyurea coatings was further analyzed through finite element simulation. In engineering design, we recommend using harder polyurea on the front face and softer polyurea on the opposite side of the aluminum sheet based on our simulations. Note de contenu : - EXPERIMENT : Polyurea preparation - Experimental scheme
- RESULTS AND DISCUSSION : Performance analysis of polyurea - Failure morphology analysis of polyurea-coated aluminum sheets - Velocity effect analysis of polyurea-coated aluminum sheets
- NUMERICAL STUDY ON THE EFFECT OF DIFFERENT HARDNESS POLYUREA ON THE PROTECTIVE PERFORMANCE OF ALUMINUM SHEETS
- Table 1 : Basic performance of new polyurea coating
- Table 2 : Failure modes of four types of test pieces under different impact speeds
- Table 3 : Approximate critical velocity of four types of composite sheets and velocity drop per unit area density of each material layer
- Table 4 : Energy consumption and energy consumption per unit area density of four types of sheets and each material layer
- Table 5 : Model parameter values for numerical simulationDOI : https://doi.org/10.1007/s11998-023-00801-7 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00801-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40181
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 6 (11/2023) . - p. 2053-2068[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24337 - Périodique Bibliothèque principale Documentaires Disponible High-temperature resistant adhesives and coatings / Markus Läpple in ADHESION - ADHESIVES + SEALANTS, Vol. 17, N° 3/2020 (2020)
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Titre : High-temperature resistant adhesives and coatings Type de document : texte imprimé Auteurs : Markus Läpple, Auteur ; Dominik Fuhrer, Auteur Année de publication : 2020 Article en page(s) : p. 24-29 Langues : Multilingue (mul) Catégories : Adhésifs dans les automobiles
Adhésifs en phase aqueuse
Colles:Adhésifs
Hautes températures
Moteurs
Piles électriques
Polymères en émulsion
Résistance thermique
Revêtements en phase aqueuse
Revêtements organiques
SiliconesLes silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki).Index. décimale : 668.3 Adhésifs et produits semblables Résumé : Heares, a Nolax start-up company, offers newly developed water-based adhesives and coatings that are resistant to extreme temperatures up to 900 °C. The products show good adhesion to fiberglass fabrics, metal or aluminum foil and are easy to apply. Note de contenu : - HEAT PROTECTION IN THE ENGINE AND BATTERY
- SILICONE RESIN EMULSION : Chemistry and principle - Simple processing
- APPLICATIONS : Heat protection sleeve automotive - Turbocharger cover - Heat and fire protection of the battery cell carrier cover - Structural fire protection - flexible fire and smoke barriers
- Table 1 : Comparison of high heat-resistant adhesives
- Table 2 : Results of the heat protection sleeve tests according to the Nolax method
- Fig. 1 : Cross-linked silicone resin
- Fig. 2 : Flexible material composite for heat protection sleeves for exhaust gas control flap in a truck. Here, temperatures of up to 400°C must be withstood over the long term
- Fig. 3 : Turbocharger cover in a combustion engine
- Fig. 4 : Battery cell carrier cover in a challenging impact test : Impact/explosion of a 4.2 VLi-OH battery, performed at the Center for Solar Energy and Hydrogen Research in Ulm
- Fig. 5 : Impact test at the ZSW, Ulm : Test specimen consisting out of fiberglass fabric coated with a combination of reflective and insulating Nolax/Heares products thereafter bonded to an aluminium plate; the impact side shows neither a hole nor a burn through
- Fig. 6 : Construction of the test specimen for the impact test
- Fig. 7 : Testing of the specimen via the welding torch method (acetylene/oxygen gas mixture, torch nozzle type : 0.5 mm)
- Fig. 8 : Fire test according to EN 1634-2019 at the IBS, LinzEn ligne : https://drive.google.com/file/d/1refLDZAunpU8_xsdvW7kdN0K23q_yZMT/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34645
in ADHESION - ADHESIVES + SEALANTS > Vol. 17, N° 3/2020 (2020) . - p. 24-29[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22256 - Périodique Bibliothèque principale Documentaires Disponible Highlighting the importance of homogeneous curing / David Ivarsson in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 210, N° 4666 (12/2020)
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Titre : Highlighting the importance of homogeneous curing Type de document : texte imprimé Auteurs : David Ivarsson, Auteur Année de publication : 2020 Article en page(s) : p. 15-17 Langues : Anglais (eng) Catégories : Automatisation
Diodes électroluminescentes
Revêtements -- Séchage sous rayonnement ultraviolet
Revêtements organiques
Surveillance numériqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Impact of different intensities on the performance of LED cured coatings.
The UV-LED technology provides a number of great advantages, such as energy savings, long lifetime, low heat, no ozone and no mercury. With LED technology, we rely on thousands of small LEDs to sufficiently cure our coating. What if there is a deviation along the width of the lamp? If a segment goes out, if some of the optics gets damaged or dirty, how does this impact the curing and the final properties? See Figures 1 and 2.
This study aims to determine what level of deviation causes problems with insufficient cure. To prevent problems with insufficient cure, Efsen has developed a proprietary technology, to continuously monitor the output of an UV lamp during production. Not only does this show us the complete picture of the UV output along the width of the lamp, it is also able to use the extracted information to adjust the power level of any segments that do not conform to the specification. This will provide an assurance, in real time, that all segments perform according to the specifications and also lets you know directly when there is damage, dirt or other issues preventing a segment to perform to standard.Note de contenu : - What is the required illumination to sufficiently cure the reactive material ?
- Transitioning to industry 4.0 - accurate curing requirements
- The choice of wavelength
- Test setup and execution - Dose and peak requirements
- The importance of monitoring the full width of an LED array, in order to maintain the cure required for desired coating performance
- In-line continuous automated dynamic UV monitoringEn ligne : https://drive.google.com/file/d/1yFXxM4hH3QfATQxueyTGiLnsrRFhoRgx/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36739
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 210, N° 4666 (12/2020) . - p. 15-17[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23119 - Périodique Bibliothèque principale Documentaires Disponible Highly dispersed graphene oxide–zinc oxide nanohybrids in epoxy coating with improved water barrier properties and corrosion resistance / Nurul Husna Othman in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 1 (01/2020)
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Titre : Highly dispersed graphene oxide–zinc oxide nanohybrids in epoxy coating with improved water barrier properties and corrosion resistance Type de document : texte imprimé Auteurs : Nurul Husna Othman, Auteur ; Wan Zaireen Nisa Yahya, Auteur ; Mokhtar Che Ismail, Auteur ; Mustapha Zi, Auteur ; Zi Kang Koi, Auteur Année de publication : 2020 Article en page(s) : p. 101-114 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Anticorrosifs
Anticorrosion
Epoxydes
Nanoparticules
Oxyde de graphène
Oxyde de zinc
Revêtements organiques
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : Epoxy resin (EP) coating that prevents corrosion is subject to premature failure as its crosslinking network appears to be porous due to the presence of hollow spaces across the network, which leads to poor water barrier. This study introduces a novel approach of utilizing the stable surface property of zinc oxide (ZnO) to facilitate the dispersion of graphene oxide (GO) sheets in epoxy coating to improve water barrier and corrosion resistance properties. The ZnO nanoparticles (ZnO NPs) were decorated on GO sheets by using (3-aminopropyl)triethoxysilane as coupling agent. The GO-ZnO nanohybrids were successfully formed, as demonstrated in Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy analyses. The GO-ZnO sheets were well dispersed in epoxy matrix with no significant agglomeration, as verified via field emission scanning electron microscopy with energy-dispersive X-ray spectroscopy. The decoration of GO with ZnO NPs expanded the spacing between GO sheets, as observed from the outcomes of X-ray diffraction analysis, which improved exfoliation and compatibility in epoxy matrix. Based on the investigations and characterization outputs, the well-dispersed GO-ZnO nanohybrids in the epoxy coatings had effectively improved water barrier properties, as well as adhesion and corrosion protection, in comparison with neat epoxy (EP) and GO–epoxy coatings.AAT Note de contenu : - MATERIALS AND METHODS : Materials - Preparation of graphene oxide-zinc oxide (Go-ZnO) nanocomposite - Preparation of epoxy nanocomposite coating - Corrosion tests - Pull-off adhesion
- RESULTS AND DISCUSSION : Characterization of functionalized zinc oxide (APTES-ZnO) and GO-ZnO - Dispersion behavior of GO and GO-ZnO nanohybrids in solvent - Characterization of GO/EP and Go-ZnO/EP nanocomposites - Corrosion protection performance of EP? GO/EP, and GO-ZnO/EP coatingsDOI : 10.1007/s11998-019-00245-y En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00245-y.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33731
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 1 (01/2020) . - p. 101-114[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21517 - Périodique Bibliothèque principale Documentaires Disponible Highly improved UV-shielding and mechanical properties of UV-curable epoxy acrylate nanocomposites by incorporating functionalized aramid nanofibers / Ying Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 1 (01/2024)
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PermalinkHighly reactive and stable in storage / Emmanouil Spyrou in INTERNATIONAL SURFACE TECHNOLOGY (IST), N° 2/2008 (2008)
PermalinkA holistic perspective of coatings technology / Charles R. Hegedus in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 1, N° 1 (01/2004)
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PermalinkHomogeneous dispersion of cellulose/graphite oxide nanofibers in water-based urushiol coatings with improved mechanical properties and corrosion resistance / Lei Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 5 (09/2023)
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PermalinkHow to achieve faster dry times and more with high-performance catalysts in low-VOC alkyd coatings / Allison Abbey in COATINGS TECH, Vol. 19, N° 1 (01/2022)
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PermalinkHow to formulate liquid integral/crystalline waterproofing compound ? / Harish Agrawal in PAINTINDIA, Vol. LXXII, N° 12 (12/2022)
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PermalinkHow to resolve problem of dust and patchy surface for the concrete floor ? / Harish Agrawal in PAINTINDIA, Vol. LXXIII, N° 1 (01/2023)
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PermalinkPermalinkHuman subjective response to aluminum coating surfaces / Marco Ajovalasit in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 3 (05/2019)
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PermalinkHybrid epoxy-SiO2/GO nanosheets anti-corrosive coating for aeronautic aluminum Al6061-T5 / Jevet E. D. López-Campos in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 2 (03/2024)
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PermalinkHydrophobic and anti-icing solutions / Belén Monje in EUROPEAN COATINGS JOURNAL (ECJ), N° 10 (10/2019)
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PermalinkPermalinkHydrophobic modification of ZnO-MIO based epoxy coating for ferrous and non-ferrous substrates in PAINTINDIA, Vol. LXIX, N° 7 (07/2019)
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PermalinkHydrophobic phytic acid conversion layers for corrosion protection of steel surfaces / Michelle Weinert in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 2 (03/2024)
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PermalinkHydrophobicity and wear resistance of ceria/PTFE composite coatings / Xiao-yan Shao in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 6 (11/2020)
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