Direct fabrication and morphology of metallic micropatterns by pulsed jet nanoelectrospraying of silver nano-ink / Ke Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 3 (05/2012)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 9, N° 3 (05/2012) . - p. 317-322 Titre : Direct fabrication and morphology of metallic micropatterns by pulsed jet nanoelectrospraying of silver nano-ink Type de document : texte imprimé Auteurs : Ke Wang, Auteur ; John P. W. Stark, Auteur Année de publication : 2012 Article en page(s) : p. 317-322 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Argent Electronébulisation Encapsulation Encre jet d'encre Nanoparticules Nanotechnologie Surfaces (technologie) Index. décimale : 667.9 Revêtements et enduits Résumé : A pulsed jet nanoelectrospray technique was applied to direct fabrication of silver micropatterns. The deposition of a commercial organic silver nano-ink was performed in a fully voltage-controlled fashion by voltage pulses ranging from 550 to 800 V with variable durations. By using 15 μm nozzles, patterns with 100-μm-sized features were locally freeformed on a silicon substrate with a spraying distance of 250 μm. An energy-dispersive X-ray spectrum confirmed metallic silver was developed in all the patterns after heat treatment at 220°C. The size and microstructural evolution of silver films was observed to strongly depend on the deposition volume and material flow over substrate surface. A good linear relationship between the deposition volume and pulse duration was exhibited over the applied voltage range in the cone-jet mode, demonstrating a drop-on-demand capability. By fitting, the deposition volume rate was estimated to be in the range of 0.38–0.59 pL/ms and was shown to increase with the applied voltage. DOI : 10.1007/s11998-011-9370-x En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-011-9370-x.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15962 [article]

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Effect of surface wettability on transparency in different water conditions / Zhoukun He in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 5 (09/2013)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 10, N° 5 (09/2013) . - p. 641-647 Titre : Effect of surface wettability on transparency in different water conditions Type de document : texte imprimé Auteurs : Zhoukun He, Auteur ; Xiaorong Lan, Auteur ; Feng Chen, Auteur ; Ke Wang, Auteur ; Hua Deng, Auteur ; Qin Zhang, Auteur ; Qiang Fu, Auteur Année de publication : 2013 Article en page(s) : p. 641-647 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Dioxyde de silicium Hydrophilie Hydrophobie Mouillabilité Polydiméthylsiloxane Le polydiméthylsiloxane —[O-Si(CH3)2]n—, ou poly(diméthylsiloxane) selon la nomenclature systématique, communément appelé PDMS ou diméthicone, est un polymère organominéral de la famille des siloxanes souvent présent dans les shampoings. On l'y ajoute pour augmenter le volume des cheveux mais il peut également aller boucher les pores du cuir chevelu et rendre les cheveux gras. C'est une des raisons pour lesquelles se laver les cheveux tous les jours est très déconseillé avec un shampooing contenant des silicones. Il existe également de l'amodiméthicone, qui est un dérivé du diméthicone. Le polydiméthylsiloxane est un additif alimentaire (E900), utilisé comme antimoussant dans les boissons (Coca-Cola BlāK). La chaîne de poly(diméthylsiloxane) forme également la structure de base des huiles et des caoutchoucs silicones. Revêtements:Peinture Surfaces -- Analyse Transparence (optique) Index. décimale : 667.9 Revêtements et enduits Résumé : Water droplets or films which are formed according to surface wettability show different effects on surface transparency. The effects of surface wettability on transparency in different water conditions are worth investigating because the surface usually suffers from the variable environmental water conditions. Herein, superhydrophobic and superhydrophilic surfaces, with negligible differences of physical structure but great differences of chemical composition, are used to investigate for the first time the relationship between surface wettability and transparency in four water conditions, including ambient condition, liquid water, boiling water steam, and ambient conditions after freezing at −4°C for 1 week. The transparency of the superhydrophobic surface is only about 5% lower in 550 nm light wavelength than that of the superhydrophilic surface in ambient conditions, but it is about 24% lower than that of the superhydrophilic surface in liquid water. When the surfaces are exposed to boiling water steam and ambient conditions after freezing at −4°C for 1 week, the superhydrophobic surface also shows lower transparency than the superhydrophilic surface because of increased fogging. However, the transparency shows little difference when the fog evaporates completely. The relationship revealed between surface wettability and transparency in different water conditions will be beneficial in choosing suitable wettability surfaces to satisfy the needed transparency in actual applications. Note de contenu : - EXPERIMENTAL SECTION : Matreials - Sample preparation - Characterization - RESULTS AND DISCUSSION : Surface wettability, morphology, and chemical composition of the coatings - Transparency in ambient conditions and in liquid water - Transparency in boiling water steam and in ambient conditions after freezing at -4°C for 1 week DOI : 10.1007/s11998-013-9490-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-013-9490-6.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19798 [article]

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Rope dyeing of fabric in supercritical carbon dioxide for commercial purposes / Mu-Ying Yang in COLORATION TECHNOLOGY, Vol. 130, N° 2 (04/2014)  

[article]  inCOLORATION TECHNOLOGY > Vol. 130, N° 2 (04/2014) . - p. 102-111 Titre : Rope dyeing of fabric in supercritical carbon dioxide for commercial purposes Type de document : texte imprimé Auteurs : Mu-Ying Yang, Auteur ; Jing Liu, Auteur ; Yan-Qin Zhang, Auteur ; Chen Chen, Auteur ; Ke Wang, Auteur ; Cheng Peng, Auteur ; Jia-Jie Long, Auteur Année de publication : 2014 Article en page(s) : p. 102-111 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dioxyde de carbone -- Recyclage Fluides supercritiques Teinture -- Fibres textiles Textiles et tissus Index. décimale : 667.3 Teinture et impression des tissus Résumé : A novel method for fabric rope dyeing in supercritical carbon dioxide fluid has been successfully developed for the first time for commercial purposes by employing a custom-built machine. The influence of parameters such as system pressure, temperature, and dyeing time on fabric colour strength was investigated, and the parameters optimised. Moreover, the level dyeing property, reproducibility, and colour fastness were investigated and evaluated under various conditions. The carbon dioxide recycling efficiency and the running costs of the proposed process in comparison with conventional processes for commercial production purposes were also investigated. The rope dyeing results show significant influence of the process parameters on fabric colour strength. Satisfactory and commercially acceptable products with a good level dyeing property, high reproducibility of coloration, and good fastness, rated at 4–5 or 5 for washing and rubbing, were obtained with supercritical carbon dioxide fluid. Moreover, a carbon dioxide recycling efficiency ranging from 92 to 95.2% was possible. In comparison with conventional dyeing processes, running costs were lowered by employing the proposed process and rope dyeing machine. Note de contenu : - EXPERIMENTAL : Materials and chemicals - Apparatus and procedures - RESULTS AND DISCUSSION : Effects of parameters on the colour strength of rope dyeing fabrics - The level dyeing property of rope fabrics in supercritical CO2 - Reproducibility of rope dyeing of fabrics in supercritical CO2 - Rope dyeing products and fastness properties - CO2 recycling after coloration DOI : 10.1111/cote.12076 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12076 Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20865 [article]

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