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Multilayer OLEDs with four slot die-coated layers / Lisa Merklein in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 6 (11/2019)
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Titre : Multilayer OLEDs with four slot die-coated layers Type de document : texte imprimé Auteurs : Lisa Merklein, Auteur ; Marvin Mink, Auteur ; Dimitrios Kourkoulos, Auteur ; Benjamin Ulber, Auteur ; Sebastian M. Raupp, Auteur ; Klaus Meerholz, Auteur ; Philip Scharfer, Auteur ; Wilhelm Schabel, Auteur Année de publication : 2019 Article en page(s) : p. 1643-1652 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Diodes électroluminescentes
Enduction par filière
Mesure
Morphologie (matériaux)
Photoréticulation
Poly(3,4-éthylènedioxythiophène)
Polystyrène sulfone
Revêtement en phase solvant
Revêtements multicouches
Revêtements organiques
SolubilitéIndex. décimale : 667.9 Revêtements et enduits Résumé : For the first time, multilayer OLEDs with four solution-processed layers are fabricated step-by-step using slot die coating. A suitable choice of coating parameters and fluid formulation enables the application of different material classes as large-area homogeneous layers with thicknesses in the nanometer range. The AFM measurements of the slot die-coated layers consisting of small molecules showed Ra values of 0.21–0.28 nm, less than previously reported in the literature. Based on a two-layer reference OLED consisting of a HIL and EML, the stack architecture is first extended by a crosslinked HTL. These three-layer OLEDs with a crosslinked HTL achieve 70% higher efficiency, compared to that of the reference devices, thus assuming successfully separated layers. In a further step, an additional ETL is applied via the orthogonal solvent approach to obtain four solution-processed layers. The averaged power efficiency of the four-layer OLEDs is increased by a factor of 2.2 compared to the reference OLEDs up to a value of 3.5 lm/W. Based on these results, it can be assumed that both approaches, the use of orthogonal solvents as well as the application of crosslinkable materials, have been successfully combined to fabricate multilayer OLEDs with four separated slot die-coated layers. Note de contenu : - EXPERIMENTAL : Device architecture - Solubility measurements - Process parameters - Device fabrication - Layer and device characterization
- RESULTS AND DISCUSSION : Film morphology - Large-area layer homogeneity - OLED performanceDOI : 10.1007/s11998-019-00225-2 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-019-00225-2.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33417
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 6 (11/2019) . - p. 1643-1652[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21321 - Périodique Bibliothèque principale Documentaires Disponible Multinozzle electrospray method for high-throughput and uniform coating : Application of superhydrophobic coating / Md. Abu Mosa in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 3 (05/2023)
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Titre : Multinozzle electrospray method for high-throughput and uniform coating : Application of superhydrophobic coating Type de document : texte imprimé Auteurs : Md. Abu Mosa, Auteur ; Se Hyun Kim, Auteur ; Kye-Si Kwon, Auteur Année de publication : 2023 Article en page(s) : p. 1069-1081 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Buse (tuyère)
Caractérisation
Dépôt par pulvérisation
Diaphonie
Electronébulisation
Epoxydes
Hydrophobie
Nanoparticules
Pulvérisation électrostatique
Revêtement -- Séchage
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 : Electrospraying is an effective method of producing functional layers on substrates. By means of electrospraying, it is possible to create uniform and fine droplets that attract to the substrate without being blown away by the electric field formed by the nozzle and the substrate. The uniformity of the coated layer is rarely affected by a fluid drying process (such as Marangoni flow on substrates) as the size of droplets can reach micron/nano-levels and the solvents in the droplets can evaporate quickly. Therefore, the electrospray process is often referred to as ‘dry deposition.’ However, when an electrospray system with multinozzles is considered for the faster process of producing large substrates, the drying process may be completely different than for a single-nozzle system. In addition, crosstalk and nonuniform spray volume from each nozzle can pose an additional problem that needs to be addressed. In this study, we proposed a multinozzle electrospray system and process to average the spray amount heterogeneity and achieve layer uniformity in a fast-drying process. Finally, we demonstrated the effectiveness of our proposed methods by fabricating superhydrophobic layers on a highly insulating substrate. Note de contenu : - MATERIALS AND METHODS : Materials - Experimental process - Characterization of deposited layers - Reliability test
- RESULTS AND DISCUSSION : Atomization process in electrospray deposition - Crosstalk and end effects - Uniform deposition method based on motion control - Drying optimization for uniform layer thickness - Characterization of the deposited layer
Table 1 : Temperature of the PCB substrate at various heating levels (temperature at the outlet of the hot blower) and wind speeds measured with the FLIR cameraDOI : https://doi.org/10.1007/s11998-022-00725-8 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00725-8.pdf?pdf=button% [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39448
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 3 (05/2023) . - p. 1069-1081[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24069 - Périodique Bibliothèque principale Documentaires Disponible 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)
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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)
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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 Nano-TiO2/organic fluorine polyacrylate emulsion coating for leather in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 2 (03-04/2021)
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Titre : Nano-TiO2/organic fluorine polyacrylate emulsion coating for leather Type de document : texte imprimé Année de publication : 2021 Article en page(s) : p. 77-80 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Angle de contact
Antibactériens
Caractérisation
Copolymérisation
Cuirs et peaux -- Finition
Dioxyde de titane
Fluor
Nanoparticules
Polyacrylates
Polymérisation en émulsion
Revêtements organiquesIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Nano-Ti02/organic fluorine polyacrylate emulsion was prepared by using dodecafluoroheptyl methacrylate (G04), modified nano-TiO2 , methyl methacrylate (MMA), ethyl acrylate (EA) as the main raw materials and potassium persulfate as the initiator. The structure of the emulsion was characterized by FTIR, TEM and UV, and the influence of nano-TiO2 and organic fluorine monomers on the application performance of leather was investigated.
The results showed that the organic fluorine monomers and nano-TiO2 participated in the copolymerization with acrylate, the prepared emulsion had a core-shell structure, and KH570 improved the dispersion of nano-TiO2 Compared with pure polyacrylate emulsion, the UV transmittance of the composite emulsion was obviously decreased. The contact angle of leather to water was about 131.16° after finishing with fluorine-containing polyacrylate emulsion, which showed good hydrophobicity. After adding the polyacrylate emulsion containing nano-TiO2 to finish the leather, the inhibition zone diameter of Escherichia coli was 5.1mm, showing good antibacterial properties. With the introduction of nano-TiO2 and organic fluorine, the applied properties of the finished leather were also effectively improved.Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Prepartion of modified nano-TiO2 - Preparation of nano-TiO2/organic fluorine polyacrylate emulsion - Finishing technology of leather - FTIR characterisation of latex films - TEM analysis of emulsion - TEM analysis of emulsion - Contact angle of finished leather to water - Test of antibacterial activity of finished leather - Testing of the finished leather applied properties
- RESULTS AND DISCUSSION : FTIR analysis - TEM analysis - UV analysis - Measurement of contact angle of leather to water - Antibacterial activity of leather - Testing of the finished leather applied performance
- Table 1 : Application performance of the finished leatherEn ligne : https://drive.google.com/file/d/1lEuv5JO8RIeW0cncBdA2v_1mkP47mal1/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35544
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 105, N° 2 (03-04/2021) . - p. 77-80[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22651 - Périodique Bibliothèque principale Documentaires Disponible Nanocomposite acrylic paint with self-cleaning action / Catarina Carneiro in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 6 (11/2012)
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PermalinkNanoindentation as an alternative to mechanical abrasion for assessing wear of polymeric automotive coatings / Jennifer David in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 4 (07/2016)
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PermalinkNanolatex technology 1 : synthesis and characterization of nanosize acrylic latexes and comparison to their conventional size counterparts / Ravi G. Joshi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 6 (11/2021)
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PermalinkNanolatex technology 2 : blending polymer nanoparticles with conventional latexes for synergistic property improvement / Frank N. Jones in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 4 (07/2021)
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PermalinkPermalinkNatural polyhydroxy resins in surface coatings : a review in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 3 (05/2022)
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PermalinkPermalinkPermalinkNeural network-based UV adjustment of the photopolymer surface for modification of coating properties printed in flexography / Sanja Mahovic Poljacek in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 1 (01/2020)
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PermalinkNew acrylic polymer for high performance interior wall paints / Wenjun Wu in COATINGS TECH, Vol. 13, N° 8 (08/2016)
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PermalinkNew additive to eliminate pinholes for water-based coating formulations / Jim Reader in COATINGS TECH, Vol. 18, N° 3 (03/2021)
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PermalinkNew advances in powder coating technology / Kevin M. Biller in COATINGS TECH, Vol. 18, N° 6 (06/2021)
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PermalinkPermalinkNew developments in UV radiation curing of protective coatings / C. Decker in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 88, B1 (03/2005)
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PermalinkNew mass spectrometry techniques for the analysis of polymers for coatings applications : MALDI and ESI / Scott D. Hanton in COATINGS TECH, Vol. 1, N° 1 (01/2004)
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