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An assessment on anti-corrosion properties for high performance coatings based on CNSL resin / Vishal Nikam in PAINTINDIA, Vol. LXXII, N° 10 (10/2022)
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Titre : An assessment on anti-corrosion properties for high performance coatings based on CNSL resin Type de document : texte imprimé Auteurs : Vishal Nikam, Auteur ; Narayani Rajagopalan, Auteur ; Chinmaya Nayak, Auteur Année de publication : 2022 Article en page(s) : p. 53-68 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosifs
Anticorrosion
Biopolymères
Liants
Noix de cajou et constituants
Réticulants
Revêtements (produits chimiques)
Revêtements organiques
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : Coating industry is currently in need of renewable resources and cashew nut shell liquid (CNSL) has been found to be ranked as an efficient bio-based resource to make polymers and resins. CNSL based resins and polymers have been extensively studied for their application in the field of protective coatings, which can help to improve the anti-corrosion, anti-fungal and anti- bacterial properties of coatings. The CNSL chemical structure offers pathways for a number of polymerization reactions owing to its reactive phenolic structure and meta-substituted unsaturated aliphatic chain. To add on to the inherent unique properties, CNSL is also cheap and easily available and thus is an economical and bio-friendly sustainable resource. The long aliphatic chain in the structure of CNSL is known to impart excellent and-corrosion, water resistance and flexibility to coatings. The present review paper mainly focuses the anti-corrosion properties of CNSL based coatings. Note de contenu : - CHARACTERISTICS OF CNSL
- APPLICATION AND PROPERTIES : CNSL modified curing agents with anti-corrosion property - CNSL based resins with anti-corrosion - CNSL based binder and hardener coating system with anti-corrosion property - CNSL based PU coating wiah anti-corrosion property
- Table 1 : Physicochemical characteristics of cashew nut shell liquid CNSLEn ligne : https://drive.google.com/file/d/1_rijaYSjAZYqNSyMPsywDi1-9bsERJLB/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38538
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Code-barres Cote Support Localisation Section Disponibilité 23748 - Périodique Bibliothèque principale Documentaires Disponible Cardanol based epoxy coatings : studies on chemical, mechanical and thermal properties / Thorat Dipika in PAINTINDIA, Vol. LXIX, N° 9 (09/2019)
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Titre : Cardanol based epoxy coatings : studies on chemical, mechanical and thermal properties Type de document : texte imprimé Auteurs : Thorat Dipika, Auteur ; Narayani Rajagopalan, Auteur ; Chinmaya Nayak, Auteur Année de publication : 2019 Article en page(s) : p. 55-70 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cardanol
Epoxydes
Extraction (chimie)
Produits chimiques -- Purification
Revêtements (produits chimiques)
Revêtements organiques
Séparation (technologie)Index. décimale : 667.9 Revêtements et enduits Résumé : CNSL and its derivatives have recently received much attention due to its origin as a natural source and ease of availability in abundance. Chemical modification of CNSL and cardanol offer pathways for their utilization in variety of applications in polymers and coatings, driving coating technology towards environmnent-friendly and green technology. CNSL has been widely studied for synthesis and development of epoxy resins, hardeners for epoxies, epoxy diluents applicable in epoxy functional protective coatings. The present review briefs the work done especially in the area of CNSL based epoxy coatings and their thermal, mechanical, chemical and anti-corrosion properties. Note de contenu : - Synthesis extraction of CNSL : Refining of CNSL - Purification and separation methods
- REACTIVITY OF CNSL
- PROPERTIES AND APPLICATIONS OF CNSL IN COATINGS
- CNSL BASED EPOXY COATINGS : Study of epoxy resin for coating applications derived from cardanol
- Fig. 1 : Cashew fruit, cross-section fo cashew nut, and cashew nut shell liquid
- Fig. 2 : Reactive sites of cardanol
- Fig. 3 : Reaction products of cardanol
- Fig. 4 : Applications of CNSL and its derivative
- Fig. 5 : Synthesis of ECP from cardanol
- Fig. 6 : TG1 graph of ECP coatings compared to commercial cashew coating
- Fig. 7 : BADGE, idealized structure of epoxy cardanol NC-514, epoxided resorcinol, hBaDGE AND EPOXIDED tmp
- Fig. 8 : Glass transition temperature of the epoxy resin mixed hBADGE, resorcinol and TMP ; cure IPDA and Jeffamine T403
- Fig. 9 : Water absorption and water contact angle of coatings
- Fig. 10 : TGA graphs of MSIL and MTHPA cured coatings
- Fig. 11 : Tafel plot of MSIL and MTHPA cured coatings
- Fig. 12 : Cardanol based epoxidized resol resin
- Fig. 13 : Epoxidation of cardanol-based resole resin
- Fig. 14 : TGA scan of epoxidized resole resin
- Fig. 15 : Graphs of effects of acids , alkalis and slvents on the ERCF resin
- Fig. 16 : Salt spray photos of cured epoxy blank and CNE/CPA films having different mixing ration wt %) at different exposure time before exposure and after 90 days
- Fig. 17 : Synthesis
- Table 1 : Physical properties of CNSL
- Table 2 : Chemical properties of CNSLEn ligne : https://drive.google.com/file/d/1L5QC7OQkriy9HGIavUQKgmx3fiT0YuRs/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33073
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Code-barres Cote Support Localisation Section Disponibilité 21228 - Périodique Bibliothèque principale Documentaires Disponible Graphene based functional coatings : an introspection / Ravindra Bari in PAINTINDIA, Vol. LXXII, N° 12 (12/2022)
[article]
Titre : Graphene based functional coatings : an introspection Type de document : texte imprimé Auteurs : Ravindra Bari, Auteur ; Narayani Rajagopalan, Auteur ; Chinmaya Nayak, Auteur Année de publication : 2022 Article en page(s) : p. 53-72 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosifs
Epoxydes
GraphèneLe graphène est un cristal bidimensionnel (monoplan) de carbone dont l'empilement constitue le graphite. Il a été isolé en 2004 par Andre Geim, du département de physique de l'université de Manchester, qui a reçu pour cette découverte le prix Nobel de physique en 2010 avec Konstantin Novoselov. Il peut être produit de deux manières : par extraction mécanique du graphite (graphène exfolié) dont la technique a été mise au point en 2004, ou par chauffage d'un cristal de carbure de silicium, qui permet la libération des atomes de silicium (graphène epitaxié). Record en conduction thermique jusqu'à 5300 W.m-1.K-1. C'est aussi un matériaux conducteur.
Matériaux -- Propriétés fonctionnelles
Primaire (revêtement)
Revêtements en phase aqueuse
Revêtements organiques
Revêtements protecteurs
Silanes
Sol-gel, Procédé
ZincIndex. décimale : 667.9 Revêtements et enduits Résumé : Research on graphene is a fast-developing field, with new concepts and applications appearing at an incredible rate. Recent research studies have been aimed at improving the resistance of coatings against such degradation using nanomaterials. Recently the uses of graphene nano-flake rein forcements in polymeric coatings have been extensively investigated by many scientists to achieve such improvements. It has been postulated that graphene can act as a strong blocking agent and increase the resistance of coatings against UV light, moisture, oxygen, and so on. Electrochemical studies, mechanical studies have been carried out by many researchers to investigate the functional properties of graphene in coatings. The present review addresses the work done on graphene based coatings to study its performance in protective coatings. Note de contenu : - Graphene based epoxy coatings
- Graphene based water-borne epoxy coating
- Graphene based zinc rich epoxy primer coating
- Graphene based anti-corrosive ink coating
- Graphene based sol-gel silaneEn ligne : https://drive.google.com/file/d/1XA6WeQxHI5OYAt955yA5Rc4zKyEIwvE1/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39319
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Code-barres Cote Support Localisation Section Disponibilité 24013 - Périodique Bibliothèque principale Documentaires Disponible 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)
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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 rightEn ligne : https://drive.google.com/file/d/13owmPbR_LA1bRtpe7GxvrMfkGi7yP053/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34653
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Code-barres Cote Support Localisation Section Disponibilité 22358 - Périodique Bibliothèque principale Documentaires Disponible A review on : CNSL based polyurethane, polyester and polyurea coatings / Sonam Saxena in PAINTINDIA, Vol. LXIX, N° 11 (11/2019)
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Titre : A review on : CNSL based polyurethane, polyester and polyurea coatings Type de document : texte imprimé Auteurs : Sonam Saxena, Auteur ; Narayani Rajagopalan, Auteur ; Chinmaya Nayak, Auteur Année de publication : 2019 Article en page(s) : p. 55-64 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Noix de cajou et constituants
Polyesters
Polyurée
Polyuréthanes
Ressources renouvelables
Revêtements -- Analyse:Peinture -- Analyse
Revêtements organiques
Structure chimiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Cashew nut shell liquid (CNSL) and its main derivative, cardanol offers a number of polymerization reaction due to the inherent chemical structure containing a reactive phenolic group and an unsaturated aliphatic chain in the meta position of the aromatic ring. Also, as a natural product, CNSL is an alternative resource to synthesize various resins and coatings contributing to green and sustainable technology. The present review focuses the work done with CNSL and its derivatives to develop coatings namely, polyurethane, polyester and polyurea coating along studies done with respect to the functional properties of the with coatings developed. Note de contenu : - SYNTHESIS AND CHARACTERISTICS OF CNSL
- CNSL BASED COATINGS : CNSL based polyurethane coatings - CNSL based polyurea coating - CNSL based polyester coating
- Fig. 1 : Chemical composition of CNSL
- Fig. 2 : Decarboxylation of anacardic acid to cardanol
- Fig. 3 : Percentage water absorption measured for all the cured films after 24h dip test
- Fig. 4 : DSC spectrum for N-75 cured coatings and DSC spectrumfor N-3390 cured coatings
- Fig. 5 : Tafel graphs for N-75 cured coatings in 3.5% NaCl solution and Tafel graphs for N-3390 cured coatings in 3.5% NaCl solution
- Fig. 6 : FTIR spectra for NC-514 and CC evaluated in chloroform solvent
- Fig. 7 : TGA graph of NIPU coatings
- Fig. 9 : Bode plots of 2K-aqueous polyurethane coatings HDI based system and IPDI based system
- Fig. 10 : Synthesis of epoxidized cardanol and cardanol based polyols
- Fig. 11 : DSC thermograms of UV-PUD films
- Fig. 12 : TGA curves of the cured films
- Fig. 13 : TGA of HDI and IPDI based coating
- Fig. 14 : Bode plot of HDI and IPDI based coatings
- Fig. 15 : Tafel plots of HDI and IPDI based coatings
- Table 1 : Physical and chemical properties of CNSLEn ligne : https://drive.google.com/file/d/1stSa3ITAJ3XsITtOfS2WPbm8xfR5xXMj/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33634
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Code-barres Cote Support Localisation Section Disponibilité 21460 - 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)
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