Dépouillements

Synthesis, characterization and optimization of epoxy-acrylic graft copolymer dispersions for waterborne industrial coatings / Randhir J. Parmar in PAINTINDIA, Vol. LIII, N° 12 (12/2003)

[article]  inPAINTINDIA > Vol. LIII, N° 12 (12/2003) . - p. 31-40 Titre : Synthesis, characterization and optimization of epoxy-acrylic graft copolymer dispersions for waterborne industrial coatings Type de document : texte imprimé Auteurs : Randhir J. Parmar, Auteur ; Niranjan V. Patel, Auteur ; Jayant S. Parmar, Auteur Année de publication : 2003 Article en page(s) : p. 31-40 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Volatile organic compounds (VOCs) are a major concern in the environmental pollution by organic solvents used in paint industry. The current trend is towards eco-friendly coatings like water borne coatings. The present work focusses on the method of preparing the Epoxy-Acrylic graft copolymer dispersions. The various experimental sets were prepared by varying the reaction parameters as well as compositions. The EAGDs were then characterized for their physico-chemical characteristics like nonvolatile content, water compatibility, viscosity, particle size, shelf stability as well as the instrumental methods viz. GPC (molecular weight), IR-Spectra and DSC where also employed for the analysis. Thus the optimization was carried out for the EAGDs to be used for the water borne industrial coatings. Note de contenu : - Experimental : - Materials - Preparation of epoxy-acrylic graft copolymer based waterborne dispersions (EAGDs) - Characterization of EAGDs - Result and discussions : - Non-volatile contents (solids) – Compatibility with water – Clarity (visual) – Acid value – Viscosity by Brookfield viscometer – Particle size – Infrared spectral studies – Number (Mn) and weight average (Mw) molecular weight – Thermal analysis by DSC – Shelf life Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12203 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
000472	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Inhibitive primers for metal / Arjun Sen in PAINTINDIA, Vol. LIII, N° 12 (12/2003)

[article]  inPAINTINDIA > Vol. LIII, N° 12 (12/2003) . - p. 41-48 Titre : Inhibitive primers for metal Titre original : Design & formulation strategies Type de document : texte imprimé Auteurs : Arjun Sen, Auteur Année de publication : 2003 Article en page(s) : p. 41-48 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Note de contenu : - Fundamental considerations : Oxidizing inhibitors – Non-oxidizing inhibitors – Pigment solubility - Design strategies : - Pigments for the inhibitive primer – Prime pigment component – Inhibitive pigments – Extender package – Pigmentary thixotropes - Design considerations : - Optimizing PVC/CPVC Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12204 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
000472	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Comparative performance of coating system on steel surface at laboratory and Chennai naval base environment / M. Selvaraj in PAINTINDIA, Vol. LIII, N° 12 (12/2003)

[article]  inPAINTINDIA > Vol. LIII, N° 12 (12/2003) . - p. 49-54 Titre : Comparative performance of coating system on steel surface at laboratory and Chennai naval base environment Type de document : texte imprimé Auteurs : M. Selvaraj, Auteur ; M. Natesan, Auteur ; K. Maruthan, Auteur ; P. Jayakrishnan, Auteur Année de publication : 2003 Article en page(s) : p. 49-54 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Maintenance coating systems viz. vinyl, epoxy - polyurethane and polyurethane were coated on wire brushed steel surface and exposed at Chennai naval base for 18 months and in a salt spray chamber for 720 hrs. After this duration, the panels were removed and subjected to impedance measurement studies in 0.5 M sodium chloride solution. The photographs of salt spray chamber exposed panels and those exposed in atmosphere indicate that the latter gets highly corroded when compared to the panels in the salt spray chamber. This is mainly due to the atmospheric corrodant present in the air in addition to the marine environment. The AC impedance measurement shows that the vinyl and epoxy-polyurethane coating system exhibited 109 ohm-cm2 resistance even after 720 hrs salt spray and a 18 month exposure at the navel base. But the resistance produced by the polyurethane system is in the order of 106 ohm-cm2 and 104 ohm.cm2, which shows comparatively poor protective property of this system. This study indicates that better correlation is possible between exposure studies and the electrochemical methods of evaluating the coating systems. The studies further conclude that vinyl and epoxy-polyurethane coating systems can be used as maintenance coating system for steel structures at the navel base environment in Chennai. Note de contenu : - Experimental : a. Epoxy-polyamide, urethane system b. Vinyl polymer system c. Polyurethane system - Evaluation of the coating system : 1. Atmospheric exposure study 2. Salt spray accelerated test 3. Electrochemical A.C. impedance measurements - Results and discussion : - Field exposures and salt spray - Impedance measurement Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12205 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
000472	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Non-aqueous dispersions in surface coating / Shivaji V. Durgavale in PAINTINDIA, Vol. LIII, N° 12 (12/2003)

[article]  inPAINTINDIA > Vol. LIII, N° 12 (12/2003) . - p. 55-64 Titre : Non-aqueous dispersions in surface coating Type de document : texte imprimé Auteurs : Shivaji V. Durgavale, Auteur Année de publication : 2003 Article en page(s) : p. 55-64 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Non-aqueous dispersion are usually dispersions of acrylic resin in aliphatic solvents, which is often a solvent for monomer but not for polymer are termed as NADS. They tend to be high in molecular weight but because they are dispersions, low in viscosity hence coatings with high film build can be obtained. Non-aqueous dispersion system is more eco friendly and cheaper as compared to the solvent process. Note de contenu : - Stabilization of nonaqueous dispersion - Preparation of nonaqueous dispersions - Application in paints - Pigmentation - Pigment dispersants - Application methods - Film formation - Film curing - General industrial applications Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12206 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
000472	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Anthraquinone azo pigments / N. Sekar in PAINTINDIA, Vol. LIII, N° 12 (12/2003)

[article]  inPAINTINDIA > Vol. LIII, N° 12 (12/2003) . - p. 65-68 Titre : Anthraquinone azo pigments Type de document : texte imprimé Auteurs : N. Sekar, Auteur ; Dhananjey S. Deulgaonkar, Auteur Année de publication : 2003 Article en page(s) : p. 65-68 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Anthraquinone azo pigments are polycyclic pigments. The term polycyclic pigments refers to pigments which are derived from anthraquinone skeleton either by chemical structure or by synthesis. 1-Aminoanthraquinone, 1-amino-5-benzaminoanthraquinone, ans 1-amino-4-benzamidoanthraquinone are generally used as diazo compenents in the synthesis of anthraquinone azo pigments. Diazotisation of 1-aminoanthraquinone followed by coupling onto couplers containing heterocyclic groups with additional carbonamide groups leads to highly insoluble migration fast pigments. Such pigments are described in several patents. They produce yellow to red colours which are recommended primarily for use in plastics. Note de contenu : - Diazotisation of 1-aminoanthraquinone, 1-amino-4-benzamidoanthraquinone and 1-amino-5-benzamido-anthraquinone - Anthraquinone azo pigments derived from BON Acid derivatives - Anthraquinone azo pigments derived from pyrazoloquinazolone - Anthraquinone azo pigments derived from pyridone, pyrimidine and pyrazolone derivatives - Antraquinone azo pigments from active methylene couplers Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12211 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
000472	-	Périodique	Bibliothèque principale	Documentaires	Disponible

The development of a scratch resistant pad-printable ink for application onto plastic / Loes Bouwkamp-Wijnoltz in PAINTINDIA, Vol. LIII, N° 12 (12/2003)

[article]  inPAINTINDIA > Vol. LIII, N° 12 (12/2003) . - p. 69-72 Titre : The development of a scratch resistant pad-printable ink for application onto plastic Type de document : texte imprimé Auteurs : Loes Bouwkamp-Wijnoltz, Auteur Année de publication : 2003 Article en page(s) : p. 69-72 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.4 Encres Résumé : Pad printing is a printing technique that can be used to apply decorative prints onto flat and curved substrates. The inks for this technique are solvent-based and of a relatively high viscosity. In order to prepare a very scratch and wear resistant ink, UV-reactive silane was prepolymerised and stabilised in a proper solvent. With this binder material good quality prints could be made. Note de contenu : - Pad Printing - CIOMATs - Followed Approach Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12212 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
000472	-	Périodique	Bibliothèque principale	Documentaires	Disponible