Designing self-stratify coatings based on epoxy-PU systems containing three pigments / Shahdad Zahedi in SURFACE COATINGS INTERNATIONAL, Vol. 103.5 (09-10/2020)  

[article]  inSURFACE COATINGS INTERNATIONAL > Vol. 103.5 (09-10/2020) . - p. 268-273 Titre : Designing self-stratify coatings based on epoxy-PU systems containing three pigments Type de document : texte imprimé Auteurs : Shahdad Zahedi, Auteur ; Seyed Reza Ghaffarian, Auteur Année de publication : 2020 Article en page(s) : p. 268-273 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosifs Anticorrosion Caractérisation Copolymère uréthane époxy Dioxyde de titane Formulation (Génie chimique) Oxyde de fer micacé Pigments Revêtement en phase solvant Revêtements autostratifiants Verre -- Revêtements Zinc Index. décimale : 667.9 Revêtements et enduits Résumé : A self-stratifying coating contains at least two resins of different natures, which spontaneously stratify after application on a substrate. Various self-stratifying systems have been reported in the literature, but self-stratifying coatings containing three pigments have rarely been discussed. In this paper, a series of self-stratifying coatings based on an epoxy-PU system and containing three pigments, i.e. zinc dust, micaceous iron oxide (MIO) and titanium dioxide (TiO2) were prepared and applied on glass plates. Stratification was studied and evaluated by Fourier Transform Infrared Spectroscopy using Attenuated Total Reflectance (FTIR-ATR) on both sides of the films. Scanning Electron Microscopy with Energy Dispersive X-ray Spectroscopy (SEM-EDX) analyses and mappings with line scans from cross-sections of the films were carried out to characterise the degree of stratification and the location of the pigments. The aim of this research is to study the factors that affect stratification and the location of the pigments in self-stratifying coatings containing three pigments, and leading to the design of a three-layered self-stratifying epoxy-PU anti-corrosive coating system. It was found that a higher solid percent of epoxy resin has a positive effect on stratification and pigment location. It was also found that better stratification was obtained by replacing some of the xylene in a formulation with a solvent with a higher evaporation rate (butyl acetate). Note de contenu : - EXPERIMENTAL : Materials - Coatings formulation - RESULTS AND DISCUSSION : FTIR-ATR results - SEM/mapping results - Fig. 2 : SEM/mapping images, F5-F7 formulas - Fig. 3 : Line scans for films of 5, F6 and F7 formulations - Fig. 4 : Liquid formulations F3, F4 and F7 in clear bottles after 72 hours storage - Table 1 : Prepared formulations - Table 2 : Weight percentage of elements in the top and bottom areas in the film cross-sections for F5, F6 and F7 formulations by EDX En ligne : https://drive.google.com/file/d/16cUOIqMPjQJs10ysmgZdKtqQZkXPdmnw/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34728 [article]

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A facile approach to UV-curable super-hydrophilic polyacrylate coating film grafted on glass substrate / Tao Liang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 6 (11/2016)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 13, N° 6 (11/2016) . - p. 1115-1121 Titre : A facile approach to UV-curable super-hydrophilic polyacrylate coating film grafted on glass substrate Type de document : texte imprimé Auteurs : Tao Liang, Auteur ; Hongqiang Li, Auteur ; Xuejun Lai, Auteur ; Xiaojing Su, Auteur ; Lin Zhang, Auteur ; Xingrong Zeng, Auteur Année de publication : 2016 Article en page(s) : p. 1115-1121 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Hydrophilie Polyacrylates Revêtements -- Séchage sous rayonnement ultraviolet Revêtements anti-buée:Peinture anti-buée Verre -- Revêtements Index. décimale : 667.9 Revêtements et enduits Résumé : The super-hydrophilic polymer coating film can easily be be peeled off from a substrate with the existence of water, which is a fatal drawback in practical applications. Herein, a facile approach is proposed to prepare UV-curable super-hydrophilic polyacrylate coating film that is chemically grafted on the surface of γ-methacryloxypropyltrimethoxysilane-modified glass substrate. Fourier transform infrared spectroscopy and scanning electron microscopy confirmed that the polyacrylate coating films were successfully grafted onto the glass substrate and exhibited rough micro-groove structure. The obtained polyacrylate coating film possessed super-hydrophilicity with the water contact angle close to nearly zero as well as good transmittance and antifogging property. Note de contenu : - EXPERIMENTAL : Materials - Modification of glass substrate - Preparation of super-hydrophilic polyacrylate coating films chemically grafted on glass substrate - Characterization - RESULTS AND DISCUSSION : FTIR analysis - Surface morphology - Super-hydrophilicity - Transmittance - Antifogging property DOI : 10.1007/s11998-016-9828-y En ligne : http://link.springer.com/content/pdf/10.1007%2Fs11998-016-9828-y.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27269 [article]

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A facile process for fabrication of environmentally safe superhydrophobic surfaces / Tanu Mittal in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 6 (11/2017)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 6 (11/2017) . - p. 1289-1295 Titre : A facile process for fabrication of environmentally safe superhydrophobic surfaces Type de document : texte imprimé Auteurs : Tanu Mittal, Auteur ; Sangeeta Tiwari, Auteur ; S. K. Tiwari, Auteur Année de publication : 2017 Article en page(s) : p. 1289-1295 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Dioxyde de silicium Dip-coating Fluoropolymères Hydrophobie Revêtement auto-nettoyant Revêtements multicouches Sol-gel, Procédé Verre -- Revêtements Index. décimale : 667.9 Revêtements et enduits Résumé : Superhydrophobic coatings have opened new vistas in the field of self-cleaning surfaces by having improved performance, robustness and preservation of cleaning agents including water. Presently, fluoropolymers are extensively explored and used for this purpose. However, the major drawback accompanying fluoropolymers is formation of environmentally persistent and toxic compounds, viz. PFOA (perfluorooctanoic acid) and PFOS (perfluorooctanesulfonic acid) on their degradation raising concern on their use. In the present study, an effort has been made to develop a facile process by using an environmentally safe material. A simple dip coating technique is reported to fabricate superhydrophobic surface. SiO2 nanoparticles of size 25–30 nm, prepared by sol–gel route, were dip-coated on glass substrate in multilayers followed by coating of a surfactant to achieve homogeneity of SiO2 layers and enhanced binding with subsequent layer of NUVA-2114 [a commercially used fluorotelomer with chemical composition C2F6(CF2CF2)nX]. It was observed that SiO2 nanoparticles and sodium dodecyl sulfate (SDS) surfactant exhibit a synergistic effect on interface stability at optimized SDS concentration. A water contact angle of 152° is achieved. The established method is simple, scalable, environmentally safe and cost-effective. Note de contenu : - EXPERIMENTAL : Materials - Preparation of SiO2 NPs by sol–gel route - Deposition of SiO2 NPs on glass substrate - Deposition of SDS and NUVA 2114 layers over SiO2 NPs - Characterization - RESULTS AND DISCUSSION : Particle size and morphology of SiO2 NPs - SiO2 NPs deposition on glass substrate - Role of SDS in stabilization of interfaces between various layers - CONTACT ANGLE AND AFM ANALYSIS - OPTICAL CHARACTERIZATION DOI : 10.1007/s11998-017-9927-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9927-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29629 [article]

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Feasibility of a polybisphenol A epichlorohydrin (PBAE)/antimony-doped tin oxide polymer composite as an NIR absorption coating for outdoor applications / Ju Yong Sim in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 4 (07/2018)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 4 (07/2018) . - p. 885-889 Titre : Feasibility of a polybisphenol A epichlorohydrin (PBAE)/antimony-doped tin oxide polymer composite as an NIR absorption coating for outdoor applications Type de document : texte imprimé Auteurs : Ju Yong Sim, Auteur ; Jeongyup Kim, Auteur ; Won-Gil Lee, Auteur ; Won-Je Cho, Auteur ; C. Justin Raj, Auteur ; Byung Chul Kim, Auteur ; Kook Hyun Yu, Auteur Année de publication : 2018 Article en page(s) : p. 885-889 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antimoine Composites polymères Couches minces Dioxyde d'étain Épichlorohydrine L'épichlorohydrine ou épichlorhydrine ou 1-chloro-2,3-époxypropane, est un composé organochloré de formule semi-développée CH2CHOCH2Cl, liquide volatil toxique, incolore à forte odeur d'ail. Un atome de carbone de l'épichlorohydrine est chiral, il existe donc deux formes énantiomères de ce composé. Nanoparticules -- Synthèse Polybisphénol A Polymères -- Propriétés optiques Rayonnement infrarouge -- Absorption Revêtements -- Propriétés optiques Solutions de polymère Verre -- Revêtements Index. décimale : 667.9 Revêtements et enduits Résumé : A polybisphenol A epichlorohydrin/antimony-doped tin oxide (PBAE/ATO) polymer composite solution was prepared by utilizing various weight percentages of ATO nanoparticles (~ 19 nm). The optical properties of the PBAE/ATO composites were analyzed by fabricating thin films on glass substrates. The polymeric film with 3 wt% ATO showed good transparency in the visible and UV regions and strong absorption in the NIR region. Moreover, under light illumination, the PBAE/ATO thin film displayed an ~ 24.4°C rise in temperature relative to the reference thin film. In addition, the outdoor NIR absorption efficiency was studied by spray coating a PBAE/ATO thin film over a vinyl greenhouse, and it was observed that the PBAE/ATO-coated greenhouse prevented snow deposition during the winter by melting the snowflakes through NIR absorption. Note de contenu : - Materials - Synthesis of ATO nanoparticles - Fabrication of the polymer/ATO composite DOI : 10.1007/s11998-018-0073-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-0073-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30865 [article]

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Influence of surface modification on thermal, adhesive properties and impact behavior of TPU films for laminated glass / Chenxing Zhang in INTERNATIONAL POLYMER PROCESSING, Vol. 37, N° 3 (2022)  

[article]  inINTERNATIONAL POLYMER PROCESSING > Vol. 37, N° 3 (2022) . - p. 329-337 Titre : Influence of surface modification on thermal, adhesive properties and impact behavior of TPU films for laminated glass Type de document : texte imprimé Auteurs : Chenxing Zhang, Auteur ; Hongwu Wu, Auteur ; Liangfeng Xu, Auteur ; Mingyuan Ren, Auteur Année de publication : 2022 Article en page(s) : p. 329-337 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adhésion Caractérisation Essais d'adhésion Essais de résilience Essais dynamiques Films adhésifs Films plastiques Films plastiques -- Propriétés mécaniques Polyuréthanes Stabilité thermique Traîtements de surface Verre -- Revêtements Index. décimale : 668.4 Plastiques, vinyles Résumé : The poor adhesion of TPU films limits their extensive application in lightweight laminated glass (LLG). A simple and effective method is reported in this paper to obtain modified TPU films by silane coupling agent (SCA) treatment. The polar groups (such as urethane groups, carboxyl groups, etc.) on the surface of TPU films reacted chemically with the reactive groups of SCA. Meanwhile, hydrogen bonds were formed between the silicon hydroxyl groups generated by the hydrolysis of SCA. Therefore, the adhesivity and thermal stability of TPU films were improved. Moreover, the surface of TPU films became rough after modification, hence the interfacial bonding area between TPU film and glass increased, which furthered the bonding effect of TPU film with glass plate. Compared with unmodified TPU films, the tensile shear bond strength (TSBS) of modified TPU films increased by nearly 28%, and the initial decomposition temperature increased from 277 °C to a maximum of 295.3 °C. The impact resistance of LLG was significantly improved due to the improvement of the adhesivity of TPU film. Note de contenu : - EXPERIMENTAL : Materials and instruments - Preparation of TPU film - Surface modification of TPU film - Adhesion test and sample preparation - Impact test and sample preparation - Characterization of modified TPU film - RESULTS AND DISCUSSION : FT-IR analysis - Thermogravimetric analysis - SEM microstructure of TPU film - Adhesive properties of TPU film - Impact properties of LLG - Table 1 : Surface modified TPU film samples. A1, A2 and A3 represent hydrolysis time of 2h, 4h and 6h, respectively. B1, B2 and B3 represent ultrasonic treatment time of 2 min, 4min and 6min, respectively - Table 2 : Different decomposition temperature of modified TPU film DOI : https://doi.org/10.1515/ipp-2022-0001 En ligne : https://drive.google.com/file/d/159a_u_N73b5qCKhSShmLt4x1sqZ-mc3k/view?usp=shari [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37910 [article]

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Nano titanium dioxide-based coatings / Arno Schut in EUROPEAN COATINGS JOURNAL (ECJ), (03/2024)  

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Optics in one shot / Manfred Meissner in KUNSTSTOFFE INTERNATIONAL, Vol. 108, N° 3 (03/2018)  

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Preparation and characterization of transparent fluorocarbon emulsion doped with antimony tin oxide and TiO2 as thermal-insulating and self-cleaning coating / Xiande Lu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 4 (07/2014)  

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Temperature resistance organic coatings - Chemistry and application : an overview / Tejas M. Shah in PAINTINDIA, Vol. LXII, N° 8 (08/2012)

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Variable structural colors and hydrophobicity of SiO2/polyethyleneimine coating on glass substrate / Yongtang Jia in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 6 (11/2015)  

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