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Nano-cerium dioxide synergistic potential on abrasion resistance and surface properties of polyurethane-nanocomposite coatings for esthetic and decorative applications on wood / Akbar Mastouri Mansourabad in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 6 (11/2020)
[article]
Titre : Nano-cerium dioxide synergistic potential on abrasion resistance and surface properties of polyurethane-nanocomposite coatings for esthetic and decorative applications on wood Type de document : texte imprimé Auteurs : Akbar Mastouri Mansourabad, Auteur ; Mohammad Azadfallah, Auteur ; Asghar Tarmian, Auteur ; Davood Efhami Sisi, Auteur Année de publication : 2020 Article en page(s) : p. 1559-1570 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Angle de glissement
Bois -- Revêtements protecteurs
Caractérisation
Essais dynamiques
Formation de film
Oxyde de cérium
Polyuréthanes
Résistance à l'abrasion
Revêtements -- Propriétés optiques
Revêtements organiques
SiliceLa silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux.
La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...).
Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale.
Statistique
Synergie
Traitement thermique
Transition vitreuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Development of an antiabrasion and optical shield clearcoat for wooden art and decorative works improves its esthetic durability and lifetime. In this study, the synergistic potentials of cerium dioxide nanoparticles (NPs) were exploited to improve the abrasive, structural, and surface properties of polyurethane (PU)/silica nanocomposite coatings applied on the thermally modified spruce wood. Microhardness, adhesion strength, contact angle, and UV–Vis spectroscopy were used to evaluate the nanocomposite coatings’ surface properties. FE-SEM and EDS techniques were also employed to scrutinize distribution of NPs in the structure of nanocomposite coatings. The results showed that the abrasion resistance significantly improves by increasing the content of silica NPs. However, microhardness and performance of nanocomposite coatings containing a high percentage of silica diminished due to the aggregation of NPs and poor crosslinking of the polymer matrix. The presence of cerium dioxide NPs as a synergistic function in the PU coatings containing nano-silica enhanced the abrasion resistance as well as the glass transition temperature and caused enhanced hardness. Incorporation of cerium dioxide NPs exhibited an incremental effect on the adhesion strength of nanocomposite coatings. However, its presence in high concentration caused an adverse impact on the transparency of the nanocomposite films. In addition, wettability of PU/silica composites remained constant after incorporating high levels of cerium oxide NPs. These findings suggest that use of Ce–Si NPs hybrid/blend in the structure of PU coatings can assure the durability of wood coatings for esthetic applications and interior decoration by strengthening the surface, mechanical, and optical properties. Note de contenu : - EXPERIMENTAL METHODS AND MATERIALS : Materials - Preparation of nanocomposite coatings - Differential scanning calorimetry (DSC) - Microhardness and adhesion strength measurements - Scanning electron microscopy (SEM) studies - Optical properties - Abrasion resistance and film thicknesses on wood - Contact angle - Statistical analysis
- RESULTS AND DISCUSSION : Glass transition temperature (Tg) - Microhardness - Adhesion strength - SEM and EDS - Nanocomposite film formation - Abrasion resistance - Optical properties of coated wood and nanocomposite films - Contact angleDOI : https://doi.org/10.1007/s11998-020-00374-9 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00374-9.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34960
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 6 (11/2020) . - p. 1559-1570[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22458 - Périodique Bibliothèque principale Documentaires Disponible Nano-silica-containing acrylic polyurethane and acrylic-polyester hybrid polyurethane coatings for direct-to-metal (DTM) coating applications – a comparative study / Sukanya Gangopadhyay in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 6 (11/2022)
[article]
Titre : Nano-silica-containing acrylic polyurethane and acrylic-polyester hybrid polyurethane coatings for direct-to-metal (DTM) coating applications – a comparative study Type de document : texte imprimé Auteurs : Sukanya Gangopadhyay, Auteur ; Prakash A. Mahanwar, Auteur Année de publication : 2022 Article en page(s) : p. 1773-1786 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion
Application directe sur le métal
Chimie analytique
Copolymère ester acrylique
Copolymère uréthane acrylique
Formulation (Génie chimique)
Matériaux hybrides
Nanoparticules
Résistance aux conditions climatiques
Résistance chimique
Revêtements -- Propriétés mécaniques
Revêtements -- Propriétés optiques
Revêtements organiques
SiliceLa silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux.
La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...).
Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale.Index. décimale : 667.9 Revêtements et enduits Résumé : In the era of sustainability, direct-to-metal coatings have proven to be a promising solution as it eliminates the need for underneath primer coating layers. In the present study, two coating systems, viz. acrylic polyurethane and acrylic-polyester hybrid polyurethane nano-composite coatings, were prepared by addition of nano-silica in various loadings for direct-to-metal coating applications. The addition of nano-silica along with selected resin systems enables to meet desired mechanical properties, chemical resistance along with weathering and corrosion resistance of DTM coating system. Incredible improvement in the overall mechanical properties of the coating including pencil hardness and scratch resistance has been observed by the addition of nano-silica. SEM technique was employed to evaluate the nano-silica dispersion into the coating system along with its morphology. SEM studies revealed thorough dispersion of the nanoparticles within the coating matrix for both the coating systems. Thermal properties were studied by thermogravimetric analysis along with structural characterization by Fourier transform infrared spectroscopy. Thermal stability of both the coating systems increased with the addition of nano-silica; however, acrylic-polyester hybrid polyurethane coatings revealed better thermal stability at 8% nano-silica loading. Color and gloss changes were studied before and after 500 h exposure to a QUV chamber. Anticorrosive properties were evaluated by salt spray exposure for 700 h. At 8% nano-silica loading, acrylic-polyester hybrid polyurethane coatings revealed better weathering performance along with anticorrosive properties and chemical resistance owing to the presence of hybrid polymer chains. Note de contenu : - EXPERIMENTAL : Materials - Preparation of nano-composite DTM coating - polyurethane (PPT) nano-composite DTM coating - Application - Coating characterization
- RESULTS AND DISCUSSION : Fourier transfer infrared spectroscopy (FTIR) analysis - Mechanical properties of coating formulations -
Scanning electron microscopy (SEM) - Thermogravimetric analysis (TGA) of coatings - Chemical resistance of APT and PPT coatings -
Optical properties - Corrosion and weathering resistance
- Table 1 : Formulations of acrylic polyurethane (APT) nano-composite DTM coating
- Table 2 : Formulations of acrylic-polyester hybrid
- Table 3 : Mechanical properties of APT and PPT coatings at various nano-silica loadings
- Table 4 : TGA of acrylic polyurethane (APT) DTM coating
- Table 5 : TGA of acrylic-polyester hybrid polyurethane (PPT) DTM coating
- Table 6 : Chemical resistance properties of APT and PPT coating systems at various nano-silica loading
- Table 7 : Gloss reading at 60° inclination for APT and PPT coating systems at various nano-silica loading
- Table 8 : Gloss measured 60° inclination before and after weathering test at various nano-silica loadings for APT and PPT coatings
- Table 9 : Color changes (ΔE values) of specimens (APT and PPT coatings) before and after the QUV chamber exposure testDOI : https://doi.org/10.1007/s11998-022-00647-5 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00647-5.pdf?pdf=button% [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38496
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 6 (11/2022) . - p. 1773-1786[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23804 - Périodique Bibliothèque principale Documentaires Disponible Novel thermal and photo curable anti-reflective coatings using fluoroelastomer nanocomposites and self-assembly of nanoparticles / Konstantinos Kourtakis in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 5 (09/2016)
[article]
Titre : Novel thermal and photo curable anti-reflective coatings using fluoroelastomer nanocomposites and self-assembly of nanoparticles Type de document : texte imprimé Auteurs : Konstantinos Kourtakis, Auteur ; Paul Bekiarian, Auteur ; Gregory Blackman, Auteur ; Mark Lewittes, Auteur ; Shekhar Subramoney, Auteur Année de publication : 2016 Article en page(s) : p. 753-762 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Essais dynamiques
Fluoroélastomères
Formulation (Génie chimique)
Matériaux -- Propriétés fonctionnelles
Nanoparticules
Photoréticulation
Réaction de couplage
Résistance à l'abrasion
Revêtement antireflet:Peinture antireflet
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Revêtements -- Propriétés optiques:Peinture -- Propriétés optiques
Silanes
SiliceLa silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux.
La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...).
Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale.
Systèmes auto-assemblésIndex. décimale : 667.9 Revêtements et enduits Résumé : We describe novel optical coatings which require either thermal or photocuring to render them mechanically robust and abrasion resistant. These new coatings are low refractive index fluoroelastomer-nanoparticle composites that form a unique nanostructure during drying of the liquid coating. During drying, the nanoparticles in these liquid coatings migrate towards the substrate. The final, 100-nm-thick anti-reflective coatings are novel and exhibit a unique bilayer structure in which the nanoparticles are ordered and segregated towards the substrate. The coatings are rapidly cured using a new process and exhibit surprising “scratch durability” as measured by aggressively testing with steel wool. Sol gel chemistry is used which involves the reaction of the nanoparticles with an acrylic oxysilane to form nanoparticles which are functionalized with sol gel derived oligomers. The functionalized nanoparticles are combined with a fluoroelastomer containing a free radical initiator and multiolefinic crosslinker, and the composite film is rapidly cured by a thermal or UV process at low temperatures. The final product is a mechanically robust, low refractive index anti-reflective film which is useful for displays and photovoltaic devices. These are unique fluoropolymer nanocomposites which utilize nanoparticle self-assembly to enhance important properties. Note de contenu : - EXPERIMENTAL METHODS : Fluoroelastomer matrix polymer - Coating compositions : composites with fluoroelastomer and silica nanoparticles - Thermally cured formulations -Phothchemically cured formulations - Coating process by reverse microgravure - Optical measurements of cured films - Abrasion testing - Software analysis to determine abrasion resistance - Nanoscratch test for abrasion resistance - High-resolution microscopy
- RESULTS AND DISCUSSION : Nanoparticle and silane coupling agents - Fluoroelastomer nanocomposites : impact of silica nanoparticles and silane coupling agent - Formulation of bilayer structureDOI : 10.1007/s11998-016-9785-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9785-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27112
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Code-barres Cote Support Localisation Section Disponibilité 18316 - Périodique Bibliothèque principale Documentaires Disponible Optical analysis of coatings including diffractive pigments using a high-resolution gonioreflectometer / Jiri Filip in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 2 (03/2019)
[article]
Titre : Optical analysis of coatings including diffractive pigments using a high-resolution gonioreflectometer Type de document : texte imprimé Auteurs : Jiri Filip, Auteur ; Radomir Vavra, Auteur ; Frank J. Maile, Auteur Année de publication : 2019 Article en page(s) : p. 555-572 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Diffraction
Goniométrie
Pigments à effets spéciaux
Revêtements -- Propriétés optiques
Spectroscopie de réflectanceIndex. décimale : 667.9 Revêtements et enduits Résumé : The aim of this article is to demonstrate a new way of measuring and understanding the appearance of pigment flake orientation and texture in special effect pigments for use in industrial coatings. We have used diffractive pigments and analyzed the relative orientation of the particles in the coating layers by evaluating their behavior in two common industry applications: solventborne and powder coatings. We have measured the interference color by taking readings with a high-resolution gonioreflectometer, in order to test the viability of automatic diffractive pigment evaluation. The results were analyzed using both psychophysical (i.e., human) and computational (i.e., mechanical) methods. Our later psychophysical and computational analysis of the visual differences that diffractive pigments present in both solventborne (1) and powder coating (2) systems for in-plane and out-of-plane geometries revealed that solventborne liquid paint systems better preserve the appearance of original diffraction gratings. This is due to enhanced orientation of the anisotropic pigment particles. The powder coating surfaces investigated, on the other hand, preserved higher intensity and thus visibility in randomly oriented solitary flakes, creating a greater sparkle contrast. We confirmed our findings by capturing and visualizing coating appearance by means of a bidirectional texture function. We then compared the diffractive pigment evaluation results with other state-of-the-art measuring device readings. We believe that our work provides valuable information on flake orientation and also compares pigment performance in a range of industrial coating systems, which may enable industrial companies to improve paint spraying processes. Note de contenu : - INTRODUCTION : The use of diffractive pigments in industry - The optical appearance of surfaces including diffractive pigments - Manufacture of diffractive pigments - Coatings systems analyzed for this study and panel preparation
- EXISTING ANALYSIS METHODS FOR EFFECT COATINGS TO DATE : Angular analysis of effect pigments in general - Analysis of coatings containing diffractive pigments - Texture analysis of effect coatings
- MOTIVATION EXPERIMENT ON THE VISUAL APPEARANCE OF DIFFRACTIVE PIGMENTS
- DEVELOOPMENT OF AN AUTOMATIC METHOD OF DIFFRACTIVE PIGMENT : Apearance acquisition system - Geometry decription
- ANALYSIS : Psychophysical analysis - Computational texture data analysis
- EXPERIMENTS ON PIGMENTS OF VARYING CONCENTRATION : Higher pigmentation samples - Lower pigmentation samples
- COMPARISON OF PROPOSED METHOD TO A STATE-OF-THE-ART TEXTURE MEASUREMENT DEVICE
- CAPTURE APPEARANCE ON COATED OBJECTSDOI : 10.1007/s11998-018-0137-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-0137-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32425
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Code-barres Cote Support Localisation Section Disponibilité 20894 - Périodique Bibliothèque principale Documentaires Disponible Optical-physical and inkjet printing properties of created hybrid CaCO3 coated papers / Ufuk Yilmaz in COLORATION TECHNOLOGY, Vol. 139, N° 6 (12/2023)
[article]
Titre : Optical-physical and inkjet printing properties of created hybrid CaCO3 coated papers Type de document : texte imprimé Auteurs : Ufuk Yilmaz, Auteur Année de publication : 2023 Article en page(s) : p. 654-666 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Amidon cationique
Carbonate de calciumLe carbonate de calcium (CaCO3) est composé d'un ion carbonate (CO32-) et d'un ion calcium (Ca2+), sa masse molaire est de 100,1 g/mole.
C'est le composant principal du calcaire et de la craie, mais également du marbre. C'est aussi le principal constituant des coquilles d'animaux marins, du corail et des escargots.
Carboxyméthylcellulose
Enrobage (technologie)
Impression jet d'encre
Liants
Papier -- Revêtements
Papier enduit
Papier et carton couché
Revêtements -- Propriétés optiques
Revêtements -- Propriétés physiquesIndex. décimale : 667.4 Encres Résumé : The aim of this study is to examine the role of different formulations of calcium carbonates on the inkjet printing quality, with the use of cationic carboxymethyl cellulose (CMC)-starch as a binder in the formation of the coating structure of paper to use for inkjet printing. For this, GCC (ground calcium carbonate), PCC (precipitated calcium carbonate) and ECC (eggshell calcium carbonate), which have been tried as new coating materials in recent years, are mixed in different proportions to form a different coated formulation and plastered on the newly produced paper surface. Then, optical and physical tests of the obtained samples are carried out. Then, printing properties of the papers on which drop-on-demand system inkjet printing is made are examined. According to the obtained data, it is determined that the optical properties of coated paper with GCC + PCC blends outperformed papers coated with other blends. According to the physical test results, GCC + PCC blended coated papers showed the best performance in breaking length and tear indices. ECC + PCC blended coated papers however showed the best performance in burst indices. It is determined that as the particle size of the calcium carbonates in the coating materials decreased, the burst indices value also decreased. This situation is the opposite for breaking length and tear indices values. When the inkjet printing features are examined, it is seen that the best results are obtained from GCC + ECC coated papers in general. The most optimal metamerism indices results, measured under three different light sources, are obtained on GCC + PCC coated papers. Note de contenu : - Optical-physical properties of specimens
- Inkjet printing properties of specimensDOI : https://doi.org/10.1111/cote.12679 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12679 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40117
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Code-barres Cote Support Localisation Section Disponibilité 24320 - Périodique Bibliothèque principale Documentaires Disponible Optical properties of polymer-based coatings containing metallic particles : effect of particle shape and binder / Kuilong Song in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 5 (09/2023)
PermalinkPhysical properties and morphology of siloxane–polyacrylate dispersion and coating films / Weepol Pramualkijja in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 5 (09/2020)
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PermalinkRapid fabrication of large-scale structurally colored PS@SiO2 films with enhanced self-cleaning capability / Fen Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 2 (03/2021)
PermalinkResponse to "Dependent light scattering in white paint films : clarification and application of the theoretical concepts" / Susan Fitzwater in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 6 (11/2013)
PermalinkReview on advances in antireflection coatings / Naresh Patil in PAINTINDIA, Vol. LXIX, N° 8 (08/2019)
PermalinkSynthesis and characterization of high-temperature-resistant and optically transparent polyimide coatings for potential applications in quartz optical fibers protection / Yaojia Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 2 (03/2019)
PermalinkSynthesis and characterization of waterborne and phosphorus-containing flame retardant polyurethane coatings / Funda Celebi in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 75, N° 944 (09/2003)
PermalinkSynthesis, characterization, and properties of isocyanate-free urethane coatings from renewable resources / Arunjunai Raj Mahendran in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 3 (05/2014)
PermalinkTiming of polyethylene glycol addition for the control of SiO2 sol structure and sol–gel coating properties / Youlai Xiang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 2 (03/2017)
PermalinkTransparent polyester polyol-based polyurethane coatings : the effect of alcohols / Junrui Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 6 (11/2013)
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