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Ability of metallic nano-particles to provide UV protection to wood surface : a preliminary experiment / Tengfei Yi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 5 (09/2022)
[article]
Titre : Ability of metallic nano-particles to provide UV protection to wood surface : a preliminary experiment Type de document : texte imprimé Auteurs : Tengfei Yi, Auteur ; Jeffrey J. Morrell, Auteur Année de publication : 2022 Article en page(s) : p. 1535-550 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alumine
Bois -- Revêtements protecteurs
Caractérisation
Colorimétrie
Dioxyde de silicium
Dioxyde de titane
Evaluation
Fourier, Spectroscopie infrarouge à transformée de
Mouillabilité
Nanoparticules
Oxyde de fer
Oxyde de zinc
Pins et constituants
Protection contre le rayonnement ultravioletIndex. décimale : 667.9 Revêtements et enduits Résumé : The effects of various nano-particle types and sizes on color, wettability, and surface chemistry of radiata pine (Pinus radiata) sapwood samples were investigated over 6 weeks of outdoor exposure. Specimens were treated with 0.2% wt/wt water dispersions of zinc oxide (ZnO), titanium dioxide (TiO2), aluminum oxide (Al2O3), silica dioxide (SiO2), cerium dioxide (CeO2), and iron oxide (Fe2O3), and four nano-sizes of Fe2O3. Color changes during exposure were characterized by measuring CIE L*a*b* color parameters, surface wettability changes were assessed using water droplet contact angle, and chemical changes were characterized by Fourier transform infrared spectroscopy (FTIR). Nano-particles protected wood from photo-discoloration to differing degrees with iron oxide providing the most effective and consistent protection. Smaller alpha Fe2O3 nano-particles provided better UV protection. Nano-particles did not reduce wettability of wood after UV exposure nor were they able to completely prevent lignin degradation. Zinc oxide nano-particles provided some cellulose and hemicellulose protection during UV exposure. Iron oxide nano-particles exhibited some potential for limiting degradation, but the differences were small and not significant from untreated controls. The results suggest that combinations of zinc and iron oxide might be useful for UV protection, and further trials are planned with these mixtures. Note de contenu : - MATERIALS AND METHODS : Materials - Characterization of nano-particles - Preparation of nano-particle solutions and treatment of wood surfaces - Exterior exposure - Color measurements - Wettability assessment - Fourier transform infrared spectroscopy (FTIR)
- RESULTS AND DISCUSSION : Nano-particle size analysis - Color changes - Surface wettability changes - FTIR spectroscopic analysis
- Table 1 : Reported and actual dimensions of nano-particles used in this study
- Table 2 : Average solution uptakes of water alone or with 0.2% wt/wt of selected nano-particles
- Table 3 : Climate conditions at the test site over the 6-week field exposure
- Table 4 : Assignments of infrared bands to molecular bonds in wood
- Table 5 : Ratios of selected peaks on the FTIR spectra with the peak at 1057 cm−1 for non-coated radiata pine wood samples before and after 6 weeks of outdoor exposure
- Table 6 : Comparisons between ratios of peak heights at 3343 or 2921/2899 cm−1 with those at 1057 cm−1 for radiata pine sapwood treated with selected nano-particles and exposed outdoors for 6 weeks
- Table 7 : Comparisons between peak heights of selected peaks with the peak at 1057 cm−1 for radiata pine sapwood treated with selected nano-particles and exposed outdoors for 6 weeksDOI : https://doi.org/10.1007/s11998-022-00628-8 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00628-8.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38288
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 19, N° 5 (09/2022) . - p. 1535-550[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23672 - Périodique Bibliothèque principale Documentaires Disponible Abrasion resistance of polymer and polymer–ceramic composite coatings for steel hydraulic structures / P. V. Vijay in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : Abrasion resistance of polymer and polymer–ceramic composite coatings for steel hydraulic structures Type de document : texte imprimé Auteurs : P. V. Vijay, Auteur ; Piyush R. Soti, Auteur ; Derrick A. Banerjee, Auteur ; Konstantinos A. Sierros, Auteur Année de publication : 2020 Article en page(s) : p. 401-411 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion
Essais de résilience
Matériaux céramiques
Mouillabilité
Mouillage (chimie des surfaces)
Polyéthylène haute densité
Profilométrie
Résistance à l'abrasion
Résistance à l'usure
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : There is an increased demand for abrasive wear-resistant coatings that add durability to steel hydraulic structures, particularly for those subjected to flowing water with debris and alternate wet/dry cycles. These coating systems provide not only corrosion and chemical resistance, but also good erosion and abrasion resistance to the metallic surfaces, which are constantly exposed to flowing water containing sand particles and debris. Generally, vinyl-based coatings are used on hydraulic steel structures to protect them from corrosion and abrasion. However, due to the existence of high water force and debris, the coating is abraded at a faster rate leading to significant maintenance and repair costs. In this study, abrasive wear resistance of conventional vinyl-based coating systems currently used on lock and dam steel structures by U.S. Army Corps of Engineers has been compared with polymer matrix composite coatings, fibrous polymer coatings, and ultrahigh molecular weight polyethylene (UHMWPE). Six coating systems were evaluated through two-body abrasion tests using a reciprocating abrader under dry and wet conditions. Furthermore, wettability of the coating systems and its effect on the wear rate under the presence of water was studied. In addition, scanning electron microscopy of the wear tracks on different coatings was conducted to study and identify their failure mechanisms. Based on the results, UHMWPE and polymer–ceramic composite coatings were found to perform significantly better than the conventional vinyl-based coatings. Note de contenu : - EXPERIMENTAL DETAILS : Coating systems - Surface preparation for application of coatings - Wear tests - Surface wettability
- RESULTS AND DISCUSSION : Depth and volume of coating abrasion - Rate of abrasive wear - Effect of surface wettability - Wear mechanisms and failure of coatings - Field implementation and inspection of coatingsDOI : https://doi.org/10.1007/s11998-019-00286-3 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00286-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33991
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Advances in contact angle, wettability and adhesion - Vol. 2 / Kashmiri Lal Mittal / Salem - Massachusetts [United States] : Scrivener Publishing (2015)
Titre : Advances in contact angle, wettability and adhesion - Vol. 2 Type de document : texte imprimé Auteurs : Kashmiri Lal Mittal (1945-....), Auteur Editeur : Salem - Massachusetts [United States] : Scrivener Publishing Année de publication : 2015 Autre Editeur : Hoboken [USA] : John Wiley & Sons Collection : Adhesion and adhesives : Fundamental and applied aspects Importance : XVII-444 p. Présentation : ill. Format : 24 cm ISBN/ISSN/EAN : 978-1-119-11698-1 Prix : 218 E Note générale : Index - Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Angle de contact
Mécanique du contact
Mouillabilité
Mouillage (chimie des surfaces)
Traîtements de surfaceIndex. décimale : 668.3 Adhésifs et produits semblables Note de contenu : 1. FUNDAMENTAL AND GENERAL ASPECTS : Wetting of solid walls and spontaneous capillary flow - A review of "ordered water monolayer that does not completely wet water" at room temperature - Cheerios effect and its control by contact angle modulation - Recent mathematical analysis of contact angle hysteresis - Computational analysis of wetting on hydrophobic surfaces : application to self-cleaning mechanisms - Bubble adhesion to superhydrophilic surfaces - Relationship between the roughness and oleophilicity of functional surfaces - Liquid repellent amorphous carbon nanoparticle networks - Recent progress in evaluating mechanical durability of liquid repellent surfaces - Superhydrophobic and superoleophobic biobased materials
2. WETTABILITY MODIFICATION : Laser ablated micro/nano-patterned superhydrophobic stainless steel substrates - RF plasma treatment of Neptune Grass (Posidonia oceanica) : a facile method to achieve superhydrophilic surfaces for dye adsorption from aqueous solutions - Highly liquid repellent technical textiles obtained by means of photo-chemical and laser surface modifications - Modification of paper/cellulose surfaces to control liqiud wetting and adhesion
3. SURFACE FREE ENERGY AND ADHESION : Surface free energy of superhydrophobic materials obtained by deposition of polymeric particles on glass - Tablet tensile strength : role of surface free energy - Why test inks cannot tell the whole truth about surface free energy of solidsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25346 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19938 668.3 MIT Monographie Bibliothèque principale Documentaires Disponible 17817 668.3 MIT Monographie Bibliothèque principale Documentaires Disponible Agents relipidants dans les produits de soin : une nécessité / Wolfgang Both in PARFUMS COSMETIQUES ACTUALITES, N° 142 (09-10/1998)
[article]
Titre : Agents relipidants dans les produits de soin : une nécessité Type de document : texte imprimé Auteurs : Wolfgang Both, Auteur ; Thomas Gassenmeier, Auteur ; H. Hensen, Auteur ; Viola Hörner, Auteur ; Werner Seipel, Auteur ; C. Le Hen-Ferrenbach, Auteur ; Laurence Robbe Tomine, Auteur Année de publication : 1998 Article en page(s) : p. 63-65 Note générale : Bibliogr. Langues : Français (fre) Catégories : Cheveux -- Soins et hygiène
Cosmétiques
Formulation (Génie chimique)
Hygiène
Matières premières
Mouillabilité
Peau -- Nettoyage
Peau -- Soins et hygiène
Tests d'efficacitéTags : 'Matière première' Cosmétique Shampooing Peau Cheveu Nettoyage Formulation 'Evaluation performance' 'Propriété surface' Porc Animal Mouillabilité 'Perte en eau' Epiderme Monoglycéride Monoacylglycérol Lamesolft® 'Produit douche' 'Agent relipidant' Artiodactyla Ungulata Mammalia Vertebrata Index. décimale : 668.5 Parfums et cosmétiques Résumé : Devant les problèmes de peau ou cheveux secs dus aux produits de nettoyage, il devient nécessaire de leur incorporer des produits relipidants et surgraissants, comme, par exemple, des monoglycérides. Note de contenu : - Généralités
- Méthodes d'évaluation de l'effet relipidant
- Substances relipidantes
- Action sur la peau
- Action sur les cheveuxPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19508
in PARFUMS COSMETIQUES ACTUALITES > N° 142 (09-10/1998) . - p. 63-65[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 002610 - Périodique Bibliothèque principale Documentaires Exclu du prêt Agents de surface. Mesure du pouvoir mouillant - Norme NF T 73-406 / Association Française de Normalisation (Paris) / Saint-Denis La Plaine : Association Française de Normalisation (AFNOR) (1969)
Titre de série : Agents de surface Titre : Mesure du pouvoir mouillant - Norme NF T 73-406 Type de document : texte imprimé Auteurs : Association Française de Normalisation (Paris) , Auteur Editeur : Saint-Denis La Plaine : Association Française de Normalisation (AFNOR) Année de publication : 1969 Importance : 6 p. Présentation : ill. Format : 30 cm Catégories : Coton Le coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles).
Mesure
Mouillabilité
Mouillage (chimie des surfaces)
Surfactants -- NormesIndex. décimale : 668.1 Agents tensioactifs : savons, détergents Résumé : La présente norme expérimentale a pour objet de définir la méthode de mesure du pouvoir mouillant d'un agent de surface. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19613 Réservation
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