Recent studies on carbon nano tube based functional coatings with respect to properties and applications / Avishek Mazumder in PAINTINDIA, Vol. LXX, N° 3 (03/2020)  

[article]  inPAINTINDIA > Vol. LXX, N° 3 (03/2020) . - p. 55-72 Titre : Recent studies on carbon nano tube based functional coatings with respect to properties and applications Type de document : texte imprimé Auteurs : Avishek Mazumder, Auteur ; Narayani Rajagopalan, Auteur Année de publication : 2020 Article en page(s) : p. 55-72 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Automobiles -- Revêtements Camouflage (science militaire) Composés organiques -- Synthèse Condensateurs électriques Conducteurs organiques Décharges électriques Dépôt chimique en phase vapeur Lasers -- Applications industrielles Matériaux -- Propriétés fonctionnelles Morphologie (matériaux) Revêtement conducteur Tribologie (technologie) Index. décimale : 667.9 Revêtements et enduits Résumé : Multi-walled and single walled carbon nanotubes (CNTs) are synthesized by methods namely 'Arc discharge', 'Laser Ablation', 'Chemical Vapor Deposition'. Due to its unique properties CNTs are considered as the backbone of futuristic coatings. As on date, it has wide area of usage right from medical and biomedical sciences to high performance conducting coatings to aerospace and specific defense equipment coatings. The techno-commercial aspect is brightest amongst all the nano-particle or composite systems available. CNTs are basically products of rolled carbon sheets. Based on the sheets, the basic characterization of CNT happens and is classified in two groups, namely, single walled or multi walled. CNTs are functionalized s to enhance its performances which are more commercially viable, for example these functionalized CNTs are used in acrylic system for automotive paints and incorporates advance coating properties in automotive paints like anti-dust, superhydrophobicity etc. CNT coatings finds its application in a wide area of functional coatings like windshields for anti-glare, anti-dust, anti-fog properties. The properties, their final application, process of authentication of the properties, functionalization of CNTs and the works related to further modification of CNT itself and coatings which can be modified by CNTs are discussed in th is paper. Note de contenu : - INTRODUCTION : History of carbon nanotube (CNT) - Morphology of carbon nanotube (CNT) - METHODS OF SYNTHESIS : Arc discharge - Laser ablation - Chemical vapor deposition - PROPERTIES OF CNTS - CNT BASED COATINGS : CNT based conductive coatings - CNT coating for supercapacitors - CNT coating for automobile application - CNT coating for tribological application - CNT based ccamouflage coating - CNT coating for defense application - Fig. 1 : Aspect ratio of CNT - Fig. 2 : Model of CNT - Fig. 3 : Arc discharge method - Fig. 4 : Laser ablation method of CNT synthesis - Fig. 5 : CNT film SPM image (2-µm scan size) showing morphology of CNT film - Fig. 6 : Optical visible-light transmittance of ITO, PEDOT and CNT films - Fig. 7 : Color measurement of CNT, ITO and PEDOT films - Fig. 8 : Optoelectronic performance of CNT transparent conductive coatings - Fig. 9 : FESEM images of the l-1202-treated t-MWNT/silane hybrid films (50wt.% silane content) a) without and b) with silica nanoparticles c) FESEM image of a pure 100 wt%) - Fig. 10 : Water CA (triangles) and sheet resistance (Rs) (circles) versus transmittance of CNT/silane hybrid films (70 wt% silane content) without (open) and with (solid) SNs. The upper image shows water droplets on transparent and conductive films - Fig. 11 : SEM images of Vantablackcoating at magnifications of 2500 X and Vantablack-s at 2750 X - Fig. 12 : Comparison chart between Vantablack-s and Treatment A (paint commonly used for extended-area Blackbody emitter plates of IR spectral emissivity) - Fig. 13 : AFM images of CNT on titanium surface - Fig. 14 : Tafel plots for Ti and Ti-CNT samples - Fig. 15 : Loading and un-loading curve for CNT covered titanium in dependence from indentation depth - Fig. 16 : Viability of host cells after 3 and 7 days culture on different surface - Fig. 17 : Host cell morphology stained with acridine orange on Ti surface (A) and CNT-covered Ti surface (B) after 7 days of culture - Fig. 18 : Printed supercapacitors - Fig. 19 : Synthesis of functionalized carbon nanotubes - Fig. 20 : TEM image of the sample of (amino-isophthalic acid)-SWCNTs and p-anisidine-SWCNTs and SEM image showing interconnections of two nanotubes - Fig. 21 : SEM image of the sample P1SWOH4 distribution of nanotubes in the matrix, and OH-SWCNTs after degradation of the matrix - Fig. 22 : Relation between the fastness of thermal dissipation - Fig. 23 : Degradation of sample (1) Target (2) P1SW3 (SWCNT) (3) P1SWOH4 (OH SWCNT) (4) P1SWFC4 (anisidine-SWCNT) using the electron now of 30 kV - Fig. 24 : XRD patterns of coated samples after annealing @ 673K for 2 hours - Fig. 25 : Friction coefficients of Cu-matrix CNT composites at different applied Ioads - Fig. 26 : Difference in IR reflectance of a CNT coated and uncoated surface - Fig. 27 : Carbon camo: A coating of carbon nanotubes, visible in the scanning-electron micrograph at left, makes the tank pattern invisible under a light microscope at right En ligne : https://drive.google.com/file/d/13owmPbR_LA1bRtpe7GxvrMfkGi7yP053/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34653 [article]

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