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Robust superhydrophilic antifogging coatings by a facile sol-gel method / Chong Ke in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 4 (07/2023)
[article]
Titre : Robust superhydrophilic antifogging coatings by a facile sol-gel method Type de document : texte imprimé Auteurs : Chong Ke, Auteur ; Chenhua Zhang, Auteur ; Zhang Huijun, Auteur ; Yongdong Jiang, Auteur Année de publication : 2023 Article en page(s) : p. 1343-1352 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Dioxyde de silicium
Hydrophilie
Nanoparticules
Revêtements anti-buée
Sol-gel, Procédé
Tétraéthoxysilane
Transparence (optique)Index. décimale : 667.9 Revêtements et enduits Résumé : In this study, a simple one-step sol–gel process was applied to synthesize SiO2-based superhydrophilic antifogging coatings on glass substrates. In this process, Si(OH)4 sol was first prepared and then SiO2 nanoparticles were added to the sol to form coating solutions. The influence of both the Si(OH)4 sol and SiO2 nanoparticle contents on the coating properties was investigated. Their contents have significant effects on the coatings’ properties, including hydrophilicity and surface morphology. The water contact angle of the optimum coating is about 3.4°. Besides, as revealed by the steam test and freeze test, the optimum superhydrophilic coating demonstrates good antifogging properties and an adequate level of mechanical strength as well. Compared to other techniques used to fabricate antifogging coating on glass substrate, the sol–gel-based process developed in this study requires no expensive equipment, and the processing time is largely shortened. Thus, such technique has great potential applications in the field of coating industry. Note de contenu : - Materials
- Preparation of the superhydrophilic coatings
- CharacterizationDOI : https://doi.org/10.1007/s11998-022-00748-1 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00748-1.pdf?pdf=button% [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39720
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Code-barres Cote Support Localisation Section Disponibilité 24153 - Périodique Bibliothèque principale Documentaires Disponible Robust surface with thermally stable hydrophobicity enabled by electrosprayed fluorinated SiO2 particles / Haojun Liu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 1 (01/2022)
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Titre : Robust surface with thermally stable hydrophobicity enabled by electrosprayed fluorinated SiO2 particles Type de document : texte imprimé Auteurs : Haojun Liu, Auteur ; Yunxi Zhang, Auteur ; Zhijun Ma, Auteur ; Hang Zhang, Auteur Année de publication : 2022 Article en page(s) : p. 347-353 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Chimie des surfaces
Dioxyde de silicium
Hydrophobie
Particules (matières)
Pulvérisation électrostatique
Stabilité thermique
Système de pulvérisation (technologie)Index. décimale : 667.9 Revêtements et enduits Résumé : Highly hydrophobic surface property is important for many applications, such as anticorrosion, antifogging, and antifouling. With regard to some practical applications, both mechanical endurance and thermal stability are essential. Here, we report a new method for making highly hydrophobic surfaces with simultaneously enhanced mechanical endurance and thermal stability. Such high-performance hydrophobic surfaces were prepared by coating electrospraying derived fluorinated SiO2 particles on various substrates, including glass slide, ceramic wafer, metal foil, and polymer sheet, with methyl silicone resin as the binder. Fluorinate silane was homogenously doped in the matrix of SiO2 particles, which can provide excellent protection effect. Meanwhile, the thermally stable methyl silicone resin can afford strong binding force between SiO2 particles and the substrates. Therefore, the hydrophobic surfaces created here possess both high mechanical endurance and excellent thermal stability. Note de contenu : - Experimental : Fabrication of thermally stable hydrophobic surface
- CharacterizationDOI : https://doi.org/10.1007/s11998-021-00540-7 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00540-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37163
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Code-barres Cote Support Localisation Section Disponibilité 23313 - Périodique Bibliothèque principale Documentaires Disponible Self-cleaning performance of sol–gel-derived TiO2/SiO2 double-layer thin films / Byeong-Min Kim in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 5 (09/2016)
[article]
Titre : Self-cleaning performance of sol–gel-derived TiO2/SiO2 double-layer thin films Type de document : texte imprimé Auteurs : Byeong-Min Kim, Auteur ; Hemraj M. Yadav, Auteur ; Jung-Sik Kim, Auteur Année de publication : 2016 Article en page(s) : p. 905-910 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Bleu de méthylène
Couches minces multicouches
Dioxyde de silicium
Dioxyde de titane
Photocatalyse
Revêtement auto-nettoyant:Peinture auto-nettoyante
Sol-gel, ProcédéIndex. décimale : 667.9 Revêtements et enduits Résumé : The self-cleaning properties of the TiO2/SiO2 double-layer films prepared by sol–gel method were investigated. Thin films were prepared by spin coating onto glass and then thermally treated at different temperatures, and characterized using X-ray diffraction, atomic force microscopy, field emission scanning electron microscopy, and UV–visible spectroscopy. The cross-sectional structure of the films was observed by FESEM. The surface roughness of the films was characterized by AFM. The root mean square surface roughness of the thin films was below 2 nm, which should enhance their optical transparency. The photo-induced hydrophilicity of the films was evaluated by water contact angle measurement in air. The photocatalytic activity of the films was studied by the photocatalytic degradation of methylene blue under UV light irradiations. The TiO2/SiO2 double-layer thin films are plausibly applicable to developing self-cleaning materials in various applications such as windows, solar panels, cement, and paints. Note de contenu : - EXPERIMENTAL : Characterizations - Photocatalytic reaction
- RESULTS AND DISCUSSION : XRD - FESEM - UV-Vis spectroscopy - AFM - Photo-induced hydrophilicity
- PHOTOCATALYTIC ACTIVITYDOI : 10.1007/s11998-016-9804-6 En ligne : http://link.springer.com/content/pdf/10.1007%2Fs11998-016-9804-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27129
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Code-barres Cote Support Localisation Section Disponibilité 18316 - Périodique Bibliothèque principale Documentaires Disponible Sensory perception of textural properties of cosmetic Pickering emulsions in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 42, N° 2 (04/2020)
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Titre : Sensory perception of textural properties of cosmetic Pickering emulsions Type de document : texte imprimé Année de publication : 2020 Article en page(s) : p. 198-207 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse sensorielle
Dioxyde de silicium
Dioxyde de titane
Emulsions -- Emploi en cosmétologie
Emulsions -- Stabilité
Emulsions pickering
Formulation (Génie chimique)
Oxyde de zinc
Surfactants
VectorisationRésumé : - OBJECTIVE : The increasing interest for the Pickering emulsions is based on the possibility to replace classical emulsifiers by the solid particles. This approach is extremely attractive for the cosmetic field. But, the main difficulty is to obtain stable emulsions with appreciable skin feel. However, there is no information about the texture of such systems. The aim of this study is to formulate and describe the textural properties of cosmetic Pickering emulsions compared with conventional systems.
- METHODS : Three metal oxides were selected : titanium dioxide, zinc oxide and silicon dioxide, able to form stable and totally emulsified systems. A conventional emulsifier was used to formulate the emulsion of reference. Finally, the mixture of two emulsifying systems, combining both, surfactant and particles, was also studied. Then, a sensory panel was asked to quantify the intensities of the perception of the seven discriminating attributes.
- RESULTS : Each particle brought its properties to the textural perception of the emulsion. TiO2 particles ensured the whitening effect of the emulsions, SiO2 provided the screech residue, whereas ZnO gave intermediate results. The conventional surfactant was perceived as glossy, greasy and more difficult to spread. The particle/surfactant mixtures gave mostly in-between results.
- CONCLUSIONS : The study shows that the sensory profile of Pickering emulsions is indirectly and directly governed by the particle properties used for the emulsion stabilization: indirectly, through affecting the emulsion orientation (oil in water or water in oil), the droplet organization and viscosity, and directly, through the particle perception on the skin surface.Note de contenu : - MATERIALS AND METHODS : Materials - Systems and characterization - Emulsions formulation - Emulsions aspect - Sensory analysis - Data analysis
- RESULTS : Individual properties of formulated systems - Sensory properties of pickering emulsions compared with conventional systems - Comparison of three systems containing 4% of the emulsifier - Comparison of three systems containing 10% of the emulsifier - The particle effectDOI : https://doi.org/10.1111/ics.12604 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34510
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Code-barres Cote Support Localisation Section Disponibilité 21862 - Périodique Bibliothèque principale Documentaires Disponible Silica aerogel : a comprehensive review on its synthesis, properties and role in designing thermal insulation coatings / Narayani Rajagopalan in PAINTINDIA, Vol. LXIX, N° 11 (11/2019)
[article]
Titre : Silica aerogel : a comprehensive review on its synthesis, properties and role in designing thermal insulation coatings Type de document : texte imprimé Auteurs : Narayani Rajagopalan, Auteur ; Chinmaya Nayak, Auteur Année de publication : 2019 Article en page(s) : p. 66-86 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Aérogels
Angle de contact
Composés inorganiques -- Synthèse
Construction -- Matériaux
Diffusivité thermique
Dioxyde de silicium
Gel de silice
Isolants thermiques
Micrographie
Revêtements
Thermocinétique
TransmittanceLa transmittance, en général, est le rapport caractérisant la transmission d'une grandeur dans un système. Elle se calcule par le rapport entre la grandeur en entrée et en sortie.
En optique, la transmittance d'un matériau ou d'un filtre est la fraction du flux lumineux le traversant. Elle est également nommée facteur de transmission mais aussi transparence dans le domaine de la photographie.
VitrageIndex. décimale : 667.9 Revêtements et enduits Résumé : Aerogels due to its nano-sized porous structure possess extremely low density (~0.003 g/cm3)10mW/mK) and solids with high porosity very low conductivity (~10mW/mK). Silica aerogel namely, has found profound interest among researchers and has been extensively studied for their thermal, mechanical and hydrophobic properties. They have 90% porosity with a thermal conductivity lower than that of air, and this makes silica aerogel an important media for conceptualising it as a highly insulating material. The present review focuses the various work done on silica aerogel based coatings and the functionality of silica aerogel as an insulating material. Note de contenu : - SYNTHESIS AND PROPERTIES OF SILICA AEROGEL : Synthesis - Precursors for sol-gel synthesis of silica aerogel - Aging of aerogel - Drying of aerogel - Characteristic properties of silica aerogel
- DESIGN ASPECT FOR DEVELOPMENT OF SILICA AEROGEL BASED INSULATION COATING SYSTEMS : Building applications - Window glazings
- Fig. 1 : Aerogel structure network and SEM micrographs of carbon and silica aerogel
- Fig. 2 : Step-wise synthesis route of aerogel
- Fig. 3 : SEM and TEM micrographs of silica aerogel
- Fig. 4 : Thermal and solar properties of HILIT/HILIT + aerogel glazing (15mm aerogel) compared with typical commercially availagle low-energy glazing
- Fig. 5 : SEM micrographs of the aerogel films : 80 nm thick xerogel, 160 nm thick aerogel, 340 nm thick aerogel and 480 nm thick aerogel (dip-coating method). SEM micrographs of the aerogel films : 1 lm thick aerogel, 2 lm thick aerogel, and 10 lm thick aerogel (multiple spin-coating)
- Fig. 6 : Transmittance of the silica aerogel coatings modified with PEG : 0, 10, 20, 30 and 40 wt%, respectively
- Fig. 7 : Surface temperature of insulation coatings at 75 mils DFT on steel heated to 180 F
- Fig. 8 : Panels coated with insulation coatings, after 2016 hours of salt spray exposure
- Fig. 9 : Contact angle of unmodified SiO2 and modified SiO2 aerogel
- Fig. 10 : Change curve of temperature for different mass fraction of SiO2 aerogel coatings
- Fig. 11 : Change curve of thermal conductivity in different mass fraction of SiO2 aerogel coatings
- Fig. 12 : Cross-sectional micrographs of the YSZ, ScYSZ coatings and silica aerogel composites
- Fig. 13 : Thermal diffusivities for YSZ, ScYSZ and SiO2 ceramic fiber aerogel composites and heating temperature curves of outer titanium surface and inter coatings surface versus time
- Fig. 14 : Temperature of sample coatings vs. coating thickness curve
- Fig. 15 : TGA and DTA graph of A1 and A1 with 5% silica aerogel
- Fig. 16 : Schematic diagram of home-made setup for heat transfer analysis
- Fig. 17 : Comparison of TC reduction rates for the coatings under studyEn ligne : https://drive.google.com/file/d/13dB3eGVZzeBg5jg7TpZBbNInxY3Erhzf/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33635
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Code-barres Cote Support Localisation Section Disponibilité 21460 - Périodique Bibliothèque principale Documentaires Disponible SiO2-like film deposited by plasma polymerization of HMDSO + O2 using repetitive high voltage pulses / C. Chaiwong in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 6 (11/2020)
PermalinkSol–gel preparation and characterization of antibacterial and self-cleaning hybrid nanocomposite coatings / Seyed Armin Zare Estekhraji in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 6 (11/2017)
PermalinkStabilization of titanium dioxide in non-aqueous and aqueous coatings / Gururaj Moharir in PAINTINDIA, Vol. LVII, N° 5 (05/2007)
PermalinkStudy of the fracture strength of waterbornd PU modified cattle leather at different thicknesses / Zhong Anhua in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 106, N° 4 (07-08/2022)
PermalinkStudy on surface wetting property regulation of greenhouse film and its antifogging performance / Dapeng Fu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 4 (07/2022)
PermalinkSurface modified fumed silicas / Stephanie Frahn in EUROPEAN COATINGS JOURNAL (ECJ), N° 03/01 (03/2001)
PermalinkSurface treatment optimization of pigmentary TiO2 from an industrial aspect / Nika Veronovski in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 2 (03/2014)
PermalinkSynthesis and characterization of nanosized titanium dioxide and silicon dioxide for corrosion resistance applications / A. M. Kamalan Kirubaharan in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 2 (03/2012)
PermalinkSynthesis of conducting PANi/SiO2 nanocomposites and their effect on electrical and mechanical properties of antistatic waterborne epoxy coating / Anh Son Nguyen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
PermalinkTanning characteristics and tanning mechanism of nano-SiO2 / Haojun Fan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 88, N° 4 (07-08/2004)
PermalinkTargeted improvement of properties / Christian Hopmann in KUNSTSTOFFE INTERNATIONAL, Vol. 102, N° 1 (01/2012)
PermalinkThe effect of the compounding procedure on the morphology and mechanical properties of PLA-PBAT-based nanocomposites / P. Saiprasit in INTERNATIONAL POLYMER PROCESSING, Vol. 36, N° 2 (2021)
PermalinkThe preparation and application of a nanocomposite tanning agent-MPNS-SMA / Hui Pan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 4 (07-08/2005)
PermalinkThe preparation of superhydrophobic photocatalytic fluorosilicone/SiO2–TiO2 coating and its self-cleaning performance / Lijun Zong in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 5 (09/2021)
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)
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