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Studies on characterization of high performance coatings based on polymer alloys of interpenetrating polymer networks / T. Anandaraj in PAINTINDIA, Vol. LI, N° 6 (06/2001)
[article]
Titre : Studies on characterization of high performance coatings based on polymer alloys of interpenetrating polymer networks Type de document : texte imprimé Auteurs : T. Anandaraj, Auteur ; P. S. Mohan, Auteur ; Sm Krishnan, Auteur ; Kalpana Balakrishnan, Auteur ; M. Raghavan, Auteur Année de publication : 2001 Article en page(s) : p. 35-52 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse thermique
Anticorrosion
Caractérisation
Chromatographie sur gel
Epoxydes
Fourier, Spectroscopie infrarouge à transformée de
Liants
Microscopie électronique à balayage
Polyacrylates
Polyuréthanes
Réseaux polymères
Revêtements protecteurs
Revêtements:Peinture
Spectrométrie infrarouge
Spectroscopie d'impédance électrochimiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Organic coatings are valued after the polymeric binder material out of which it is made for the reason that it only decides the extent of protection and the life of a coating. Of a few ways to obtain better performing polymeric binders, alloying the incompatible polymers through compatibilization is fast-emerging with a number of promises. Interpenetrating polymer networks are one of its kinds. In this study, two polymer alloys of Interpenetrating Polymer Network (IPN) based on epoxy-acrylic-polyurethane polymers have been developed in the laboratory and subjected to different laboratory accelerated tests as pigmented coatings. They have been found to possess far superior physical and chemical and corrosion resistance properties compared to crosslinked acrylates, polyamide cured epoxies and polyurethanes. The IPNs as clear coatings were also characterized by various physico-chemical and surface analytical techniques. The thermo-analytical techniques, FTIR and SEM confirmed the formation of IPN. The improved corrosion resistance properties were established by water permeation tests and electrochemical impedance spectroscopy. Note de contenu : - Synthesis of epoxy-acrylate precursors
- Synthesis of IPNs
- Neat systems
- Crosslinked acrylic copolymer system
- Polyamide catalyzed epoxy system
- Acrylic polyol based aromatic polyurethane system
- Nomenclature of coatings
- Specimen preparation
- Free-filming of IPNs
- Characterization methods : FT-IR spectroscopy – Gel permeation chromatography – Scanning electron microscopy – Thermal measurements – Gel-time measurements – Moisture vapor transmission rate measurements – Electrochemical AC Impedance spectroscopy (EIS)
- FT-IR spectra
- Gel permeation chromatograms
- Thermal measurements
- Morphology of IPNs by SEM
- Get-time measurements
- Moisture-vapor transmission rates
- Electrochemical AC impedance spectroscopyPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12590
in PAINTINDIA > Vol. LI, N° 6 (06/2001) . - p. 35-52[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001267 - Périodique Bibliothèque principale Documentaires Disponible Studies on corrosion resistant properties of inhibitive primed IPN coating systems in comparison with epoxy-PU systems / S. M. Krishnan in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 1 (03/2007)
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[article]
Titre : Studies on corrosion resistant properties of inhibitive primed IPN coating systems in comparison with epoxy-PU systems Type de document : texte imprimé Auteurs : S. M. Krishnan, Auteur ; P. S. Mohan, Auteur Année de publication : 2007 Article en page(s) : p. 89-100 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Epoxydes
Essais accélérés (technologie)
Isocyanates
Polyuréthanes
Réseaux polymères
Réticulation (polymérisation)
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : Though blending polymers to obtain high performance materials is an old practice, the new trend in such an approach is the emergence of interpenetrating polymer networks (IPNs) as binders for protective coatings with improved properties. In this study, one ambient curing IPN-type polymer alloy developed out of epoxy and acrylic polyurethane systems as a high performing binder was formulated into paints and evaluated in comparison with the currently used conventional epoxy polyamide and polyurethane systems. A three-coat system consisting of a zinc phosphate primer, a micaceous iron oxide (MIO) undercoat, and a topcoat was formulated out of the IPN along with a similar system of epoxy primer, epoxy undercoat, and a PU topcoat. A two-coat system of the same primer with an IPN clear topcoat and a similar system with epoxy has also been studied. All the systems were studied under accelerated laboratory tests and field tests at a corrosive location. The results are reported and conclusions are drawn in this article. DOI : 10.1007/s11998-007-9004-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-007-9004-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3674
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 4, N° 1 (03/2007) . - p. 89-100[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 007149 - Périodique Bibliothèque principale Documentaires Disponible 008267 - Périodique Bibliothèque principale Documentaires Disponible Studies on the corrosion characteristics of a few coated reinforced TMT bars used in concrete structure / Dhurjoti Banerjee in PAINTINDIA, Vol. LXII, N° 4 (04/2012)
[article]
Titre : Studies on the corrosion characteristics of a few coated reinforced TMT bars used in concrete structure Type de document : texte imprimé Auteurs : Dhurjoti Banerjee, Auteur ; Buddhadeb Duari, Auteur ; Rajib Dey, Auteur ; Bimal Chaudhuri, Auteur ; Debasish Sarkar, Auteur Année de publication : 2012 Article en page(s) : p. 49-53 Langues : Anglais (eng) Catégories : Anticorrosion
Barres d'armature
Polyuréthanes
Revêtements -- Corrosion
Revêtements:PeintureIndex. décimale : 667.9 Revêtements et enduits Résumé : The corrosion behavior of coated reinforced TMT bars used in conjunction with concrete structure have been investigated individually and also with various conditions of coated contretes. Corrosion characteristics of the coated & uncoated materials were measured then potentiostatically. The Icorr & Ecorr values were calculated using Gamry Echem Software and Tafel's extrapolation methods. The measurements were made based on the principle of Evans diagram Icor is free corrosion current & if it is more, it is corroding faster. Ecorr value if less negative is more safer & if it tends to zero it is less corroding and at zero value there is no corrosion. If Ecorr value is positive then it is considered as nobler or getting protected. Comparing the results it has been observed that polyurethane coating in reinforced TMT bars seems to be a potential coating material for resistance corrosion. Note de contenu : - Sample preparation
- Experiments - Processing of polarization data for the estimation of Ecorr & Icorr
- Corrosion data of the specimensPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=14750
in PAINTINDIA > Vol. LXII, N° 4 (04/2012) . - p. 49-53[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13889 - Périodique Bibliothèque principale Documentaires Disponible Studies on the dyeability and dyeing mechanism of polyurethane/clay nanocomposite filaments with acid, basic and reactive dyes / Gude Venkatareddy Raghunath Reddy in COLORATION TECHNOLOGY, Vol. 134, N° 2 (04/2018)
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[article]
Titre : Studies on the dyeability and dyeing mechanism of polyurethane/clay nanocomposite filaments with acid, basic and reactive dyes Type de document : texte imprimé Auteurs : Gude Venkatareddy Raghunath Reddy, Auteur ; Mangala Joshi, Auteur ; Bapan Adak, Auteur ; Bansi Lal Deopura, Auteur Année de publication : 2018 Article en page(s) : p. 117-125 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Argile
Colorants
Dispersions et suspensions
Fibres textiles synthétiques -- Détérioration
Filature
Matériaux hybrides
Polyuréthanes
Teinture -- Fibres textiles synthétiquesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Polyurethane/clay nanocomposite (PUCN) filaments were spun by the dry‐jet‐wet spinning method. To prepare the PUCN filaments, 0.25, 0.50 and 1% of nanoclay on the weight of polyurethane were incorporated in the polyurethane dope. The interaction between clay and polyurethane was analysed by attenuated total reflectance–Fourier Transform‐infrared (ATR‐FTIR) spectroscopy. The structure and morphology of the PUCN filaments were analysed by wide‐angle X‐ray diffraction (WAXD) and transmission electron microscopy (TEM). Both the neat polyurethane and the PUCN filaments were dyed with different acid, basic and reactive dyes. The neat polyurethane filaments exhibited poor dyeability with all three classes of dyes. By contrast, the PUCN filaments showed a significantly higher dye uptake with all of the dyes used. Furthermore, the dye uptake increased significantly as the percentage of clay in the filaments increased, as indicated by the increase in the K/S values of the dyed filaments. The dyeing mechanism with all three dyes, as well as the increased dyeability of the PUNC filaments in comparison to those of the neat polyurethane filaments, was discussed. Note de contenu : - EXPERIMENTAL : Materials and methods - Preparation of PUCN filaments - Dyeing of the filaments - After treatment of the dyed filaments - Characterisation
- RESULTS AND DISCUSSION : ATR-FTIR analysis - Structure of PUCN filaments - Dispersion of organoclay in PU matrix - Dyeability studiesDOI : 10.1111/cote.12332 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12332 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30316
in COLORATION TECHNOLOGY > Vol. 134, N° 2 (04/2018) . - p. 117-125[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19748 - Périodique Bibliothèque principale Documentaires Disponible Study of anionic polyurethane ionomer dispersant / Y. S. Huang in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 69, N° 872 (09/1997)
[article]
Titre : Study of anionic polyurethane ionomer dispersant Type de document : texte imprimé Auteurs : Y. S. Huang, Auteur ; S. L. Ding, Auteur ; K. H. Yang, Auteur ; C. P. Chwang, Auteur ; D. Y. Chao, Auteur Année de publication : 1997 Article en page(s) : p. 69-74 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Agents dispersants (chimie)
Dioxyde de titane
IonomèresUn ionomère est un copolymère thermoplastique « réticulé ioniquement ». La réticulation améliore la cohésion du polymère et la conductivité électrique.
Pigments inorganiques
Polyuréthanes
Revêtement émail:Peinture-émail
Revêtements -- Additifs
Revêtements en phase aqueuse:Peinture en phase aqueuse
SurfactantsIndex. décimale : 667.9 Revêtements et enduits Résumé : Anionic polyurethane ionomers designed for use as dispersants in water-soluble acrylic baking enamels were synthesized, and their structures were confirmed by infrared analysis. In an aqueous media, the surface tension of the polyurethane ionomers with different ionic or mixed ionic groups was found to increase with increased concentration of ionic groups, because of the orientation of hydrophobic groups at the air-water interface. It was also found that viscosity in water is higher for a polyurethane ionomer with L-2,5-diaminovaleric acid hydrochloride than for a polyurethane ionomer with dimethylol propionic acid. Polyurethane ionomers with dimethylol propionic acid, p-amino benzoic acid, and mixed dimethylol propionic acid/p-amino benzoic acid were better dispersants for the wettability and dispersion of titanium dioxide (TiO2) in the water-soluble acrylic enamels. The degree of dispersion of TiO2 was found to improve with increased agitation time and anionic polyurethane ionomer concentration. In addition, polyurethanes with dimethylol propionic acid or p-amino benzoic acid or mixtures of these acids improved TiO2 dispersion stability in the baking enamel. Note de contenu : - EXPERIMENTAL : Materials - Method of ionomer preparation - Paint preparation Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18282
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 69, N° 872 (09/1997) . - p. 69-74[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 003541 - Périodique Bibliothèque principale Documentaires Disponible Study of cross-linking reactions on butadiene binders in aqueous finishing / Anna Bacardit in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 94, N° 6 (11-12/2010)
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PermalinkStudy of ionic/nonionic polyurethane dispersions with high solid content and low viscosity using a complex hydrophilic chain-extending agent / Faxing Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 1 (01/2018)
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PermalinkStudy of the fracture strength of waterbornd PU modified cattle leather at different thicknesses / Zhong Anhua in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 106, N° 4 (07-08/2022)
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PermalinkStudy of the performance of polyurethane coatings derived from cottonseed oil polyol / Prashant Narute in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 1 (01/2016)
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PermalinkStudy on flame retardancy and thermal stability of rigid polyurethane foams modified by amino trimethylphosphonate cobalt and expandable graphite / Bing Liu in INTERNATIONAL POLYMER PROCESSING, Vol. 38, N° 2 (2023)
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PermalinkStudy on flame retardant properties and thermal stability of synergistically modified polyurethane foam with ammonium polyphosphate and barium phytate / Gaojie Ding in INTERNATIONAL POLYMER PROCESSING, Vol. 39, N° 3 (2024)
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PermalinkStudy on moisture permeability and microscopic analysis of two kinds of coated thin sheep leather / Zhong Anhua in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 106, N° 5 (09-10/2022)
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PermalinkA study on the corrosion inhibition properties of silane-modified Fe2O3 nanoparticle on mild steel and its effect on the anticorrosion properties of the polyurethane coating / M. J. Palimi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 2 (03/2015)
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PermalinkStudy on the improvement of leather air permeability with WPU adhesive based on gelatin grafting / Ma Di in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 104, N° 4 (07-08/2020)
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PermalinkStudy on the thermal stability and combustion performance of polyurethane foams modified with manganese phytate / Xu Zhang in INTERNATIONAL POLYMER PROCESSING, Vol. 38, N° 3 (2023)
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PermalinkStudy on the thermal stability and smoke suppressant effect of polyurethane foam modified by ammonium lignosulfonate / Xu Zhang in INTERNATIONAL POLYMER PROCESSING, Vol. 39, N° 1 (2024)
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PermalinkLa substitution des chlorofluorocarbures dans les mousses rigides de polyuréthane / Arnaud Albouy in L'ACTUALITE CHIMIQUE, N° 4 (04/2000)
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PermalinkPermalinkSuper robust, anti-bacterial polyurethane ionogel with high sensitivity and hydrophobicity / Wei Wang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIX, N° 1 (01/2024)
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PermalinkSuper-strong bond for extreme stressing / Michael Gansow in ADHESION - ADHESIVES + SEALANTS, N° 4/2010 (2010)
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