Anti-fingerprint coatings / Steven Block in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 198, N° 4526 (07/2008)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 198, N° 4526 (07/2008) . - p. 16-19 Titre : Anti-fingerprint coatings Type de document : texte imprimé Auteurs : Steven Block, Auteur ; Peter Hupfield, Auteur ; Yasuo Itami, Auteur ; Eiji Kitaura, Auteur ; Don Kleyer, Auteur ; Tetsuya Masutani, Auteur ; Yasuhiro Nakai, Auteur Année de publication : 2008 Article en page(s) : p. 16-19 Langues : Anglais (eng) Catégories : Angle de contact Perfluoropolyéther Propriétés anti-empreintes Revêtements -- Additifs:Peinture -- Additifs Silanes Surfaces -- Nettoyage Index. décimale : 667.9 Revêtements et enduits Résumé : Stay-clean and easy-to-clean surface properties keep surfaces free of contamination from fingerprints and dirt. Achieving oil and water repellency on surfaces is easily obtained with the use of fluoroalkyl-modified silanes. While fluoroalkyl-modified silanes exhibit high static and advancing water and oil contact angles, their low receding contact angles mean the oil and water will not readily slide over the treated surface. The resulting effect of these characteristics yields a surface that is both easy to clean and stays clean longer. Ultimately, modified perfluoropolyether silanes give high static and advancing water and oil contact angles as well as high receding contact angles resulting in a very low sliding angle. The influence of structure modification of the silane and the perfluoropolyether component is examined. Their impact on performance by application method is also discussed. En ligne : https://drive.google.com/file/d/1DVo4NyO6UUFVon3LF5Itb6sQ8xXOr-2t/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27175 [article]

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Anti-fingerprints fluorinated coating for anodized titanium avoiding color alteration / Walter Navarrini in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 2 (03/2011)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 2 (03/2011) . - p. 153-160 Titre : Anti-fingerprints fluorinated coating for anodized titanium avoiding color alteration Type de document : texte imprimé Auteurs : Walter Navarrini, Auteur ; Tommaso Brivio, Auteur ; Dmitrij Capobianco, Auteur ; Maria Vittoria Diamanti, Auteur ; Mariapia Pedeferri, Auteur ; Luca Magagnin, Auteur ; Giuseppe Resnati, Auteur Année de publication : 2011 Article en page(s) : p. 153-160 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Décoloration Métaux -- Oxydation anodique Perfluoropolyéther Propriétés anti-empreintes Revêtements Titane Index. décimale : 667.9 Revêtements et enduits Résumé : In this study amorphous fluorinated coatings applied to anodized titanium surface have been investigated. A copolymer between tetrafluoroethylene and perfluoro-4-trifluoromethoxy-1,3-dioxole (AD60) and two perfluoropolyether containing ammonium phosphate (F10) or triethoxysilane (S10) functionalities have been tested. To estimate the color alteration of the anodized titanium surfaces due to the application of the coatings, spectrophotometric analyses have been made. Water and n-dodecane contact angles as well as apparent surface energy have been evaluated. Ellipsometry and atomic force microscopy data have been used to measure the thickness of the fluorinated coatings. A tailored mechanical preliminary test has also been explored to evaluate the adhesion of the coatings on the anodized titanium surface. The resistance to surface soiling with castor oil was also preliminarily investigated. The fluorinated coating tested on anodized titanium showed a low apparent surface energy and high chromatic aspect conservation, this is particularly evident for the titanium anodized coated with triethoxysilane functionalities fluoropolymers S10. Note de contenu : - Materials - General methodology for the preparation of titanium anodized substrates - General methodology for the coating of anodized titanium plates - Contact angle measurements - spectrophotometry - Ellipsometry and AFM DOI : 10.1007/s11998-010-9293-y En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9293-y.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11357 [article]

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Perfluoropolyether-based organic-inorganic hybrid coatings: Preparation and surface characterisation / M. Messori in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 88, B4 (12/2005)  

[article]  inSURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 88, B4 (12/2005) . - p. 243-249 Titre : Perfluoropolyether-based organic-inorganic hybrid coatings: Preparation and surface characterisation Type de document : texte imprimé Auteurs : M. Messori, Auteur ; C. Tonelli, Auteur ; S. Nannarone, Auteur ; M. Montecchi, Auteur ; L. Pasquali, Auteur ; P. Fabbri, Auteur ; Francesco Pilati, Auteur ; Maurizio Toselli, Auteur Année de publication : 2005 Article en page(s) : p. 243-249 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Angle de contact Caractérisation Hydrophobie Matériaux hybrides Oléophobie Perfluoropolyéther Poly-e-caprolactone Sol-gel, Procédé Spectroscopie de photoélectrons Index. décimale : 667.9 Revêtements et enduits Résumé : Hydrophobic-oleophobic coatings were prepared by using the sol-gel process with organic-inorganic hybrids based on perfluoropolyether-polycaprolactone (PFPE-PCL) copolymers. Hybrid coatings were prepared by changing the organic-inorganic ratio, the PFPE/PCL ratio in the copolymer, and the reaction conditions. A complete surface characterisation was carried out by contact angle analysis and x-ray photoemission spectroscopy (XPS). In all cases the wettability of the coatings was found to be very low. Surface composition analysis showed that the surface segregation of the fluorinated PFPE segments was always high enough to give a very high hydrophobic character to the coating surface. Note de contenu : - EXPERIMENTAL : Materials - Prepration of a,w-hydroxyterminated PCL-PFPE-PCL block copolymers - Preparation of a,w-triethoxysilane-terminated PCL-PFPE-PCL block copolymers - Preparation of PCL-PFPE-PCL/silica hybrids - CHARACTERISATION - RESULTS AND DISCUSSION : Surface characterisation DOI : 10.1007/BF02699579 En ligne : https://link.springer.com/content/pdf/10.1007/BF02699579.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5402 [article]

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Testing organic and organic–inorganic fluorinated hybrid coatings as protective materials for clay bricks / Simonetta Lucia Pagliolico in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 1 (01/2019)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 1 (01/2019) . - p. 81-92 Titre : Testing organic and organic–inorganic fluorinated hybrid coatings as protective materials for clay bricks Type de document : texte imprimé Auteurs : Simonetta Lucia Pagliolico, Auteur ; Elena Daniela Ozzello, Auteur ; Guido Sassi, Auteur ; Roberta Bongiovanni, Auteur Année de publication : 2019 Article en page(s) : p. 81-92 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Argile Briques Capillarité Humidité -- Absorption:Eau -- Absorption Perfluoropolyéther Revêtements protecteurs Index. décimale : 667.9 Revêtements et enduits Résumé : The durability of brickworks, used as facing bricks, parapets, or chimneys, is a crucial aspect of the maintenance of buildings. Water absorption and penetration due to wind-driven rain, water rundown, and capillary rising can cause serious damages and a premature deterioration of porous clay bricks, and a significant increase in their thermal conductivity. Protective coatings for brickwork must provide enhanced hydrophobic properties without affecting moisture regulation and breathability of masonry. In the present work, a standardized type of facing clay brick was treated with two types of hydrophobic coatings based on a commercial perfluoropolyether oligomer containing alkoxysilane terminal groups, respectively, with or without an inorganic precursor, tetraethoxysilane, to generate in situ silica nanoparticles. The performance of the coating was assessed by multiple indicators, such as wetting delay, water absorption coefficient, protection degree by capillarity, contact angle, roughness and gloss, as a function of the amount of coating. Uncertainties analysis of indicators was carried out. Coating performance was assessed at different exposure times comparable to in situ real ones. Optimal amounts of coating were established to maximize the protection with the minimum quantity of polymer. As a result, a square meter of brick surface exposed to water for 2–4 h can absorb about 7–8 L of water. Very small amounts of PFPE coatings change the brick surface/water interactions, more than halving the absorbed water (0.5–2 l) and increasing the protection degree up to 80–100%. After longer exposure times, the reduction in absorbed water is basically higher when brick specimens are treated with organic/inorganic nanostructured hybrid PFPE coatings. Note de contenu : - EXPERIMENTAL : Materials and methods - Characterization of water capillary absorption - Characterization of the bricks surface - RESULTS AND DISCUSSION : Characterization of untreated bricks - Amount of water repellent applied - Characterization of treated specimens - Effectiveness of coatings DOI : 10.1007/s11998-018-0102-3 En ligne : https://link.springer.com/article/10.1007/s11998-018-0102-3 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31967 [article]

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The influence of perfluoropolyether silane structural modification on performance when used as surface treatment agents / Yasuo Itami in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 89, B3 (09/2006)  

[article]  inSURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS > Vol. 89, B3 (09/2006) . - p. 255-258 Titre : The influence of perfluoropolyether silane structural modification on performance when used as surface treatment agents Type de document : texte imprimé Auteurs : Yasuo Itami, Auteur ; T. Masutani, Auteur ; Yasuhiro Nakai, Auteur ; Don Kleyer, Auteur ; Peter Hupfield, Auteur Année de publication : 2006 Article en page(s) : p. 255-258 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Angle de contact Hydrophobie Oléophobie Perfluoropolyéther Résistance à l'abrasion Revêtements antisalissures Revêtements organiques Silanes Index. décimale : 667.9 Revêtements et enduits Résumé : Imparting oil and water repellency on surfaces is easily achieved with the use of fluoroalkyl-modified silanes. Whilst perfluoroalkyl-modified silanes exhibit high static and advancing water and oil contact angles, their low receding contact angles mean that water and oil will not readily slide over treated surfaces. However, modified perfluoropolyether (PFPE) silanes, whilst exhibiting high static and advancing water and oil contact angles, also exhibit high receding contact angles, resulting in surfaces where the sliding contact angle is very low. The influence of structure modification of the silane and the perfluoropolyether component are examined along with the organic linking group. Their impact on performance using both the dip coating method and the chemical vapour adsorption method is discussed. Note de contenu : - Fig. 1 : Synthesis of acyl fluoride terminated perfluoropolyether (PFPE) - Fig. 2 : Synthesis of unsaturated perfluoropolyether derivatives - Fig. 3 : Synthesis of alkoxysilyl perluoropolyether adducts - Fig. 4 : Synthesis of oligomerised alkoxysilyl modified perfluoropolyether - Fig. 5 : Summary of application methods for glass test pieces - Fig. 6 : Impact of UV irradiation on static water contact angles - Fig. 7 : Impact of abrasion resistance on static water contact angles - Table 1 : Contact angle data for treated glass surfaces - Table 2 : The impact of perfluoroether molecular weight - Table 3 : Impact of the application method on the water contact angle DOI : 10.1007/BF02699669 En ligne : https://link.springer.com/content/pdf/10.1007/BF02699669.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5379 [article]

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Water-repellent coating for mobile phone microphones / G. Yamauchi in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 88, B4 (12/2005)  

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