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Ajouter le résultat dans votre panierProperties of acrylic-melamine coatings based on high conversion prepolymer / Dipak K. Chattopadhyay in PAINTINDIA, Vol. LIII, N° 7 (07/2003)
Titre : Properties of acrylic-melamine coatings based on high conversion prepolymer Type de document : texte imprimé Auteurs : Dipak K. Chattopadhyay, Auteur ; B. Kalyan Chakravarti, Auteur ; Ramanuj Narayan, Auteur ; K. V. S. N. Raju, Auteur Année de publication : 2003 Article en page(s) : p. 45-56 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Acrylic copolymers with different amounts of hydroxyl groups were prepared byfree-radical solution and suspension polymerisation techniques in presence of benzoyl peroxide (BPO) initiators. Monomers used were hydroxy ethyl methacrylate (HEMA), methyl methacrylate (MMA), butyl acrylate (BA) and styrene. The polymers synthesized were characterized by get permeation chromatoyaphy, IR and 1H-NMR. The polyols were crosslinked with butoxy methyl melamine in the ratio 85:15 in presence of p-TSA. The practical performance of melamine-cured acrylic coatings was investigated. The free clear coatings were used for dynamic mechanical, thermal, tensile and water vapor permeability study. Supportedcoatings were used for mechanical property evaluation. The results indicated increased crosslink density and glass transition temperature with the increase of hydroxyl number in the acrylic copolymer. The lower glass transition temperatures of the coatings formulated from polyols synthesized by suspension polymerization method than the coatings formulated from polyols synthesized by solution polymerization method. Coatings formulated from polyols synthesized by suspension polymerization showed more flexible nature as compared to polyols synthesized by solution polymerization method. The thermal stability of the polyols was less than the corresponding crosslinked coatings. The water vapor permeability data showed the anomalous behavior. Note de contenu : - Experimental : Materials – Synthesis of acrylic polyols
- Characterization
- Formulation of clear and pigmented coatings
- Free film properties
- Supported film properties
- Corrosion resistance properties
- Chemical resistance properties
- Dynamic mechanical properties
- Thermal properties
- Mechanical and tensile properties
- Water vapor permeability
- Corrosion resistance properties
- Chemical resistance propertiesPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12157
in PAINTINDIA > Vol. LIII, N° 7 (07/2003) . - p. 45-56[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000467 - Périodique Bibliothèque principale Documentaires Disponible
Titre : Acoustical studies on epoxy resins in 1,4-dioxane Type de document : texte imprimé Auteurs : Rajesh Trehan, Auteur ; G. L. Kad, Auteur ; Krishan Lal, Auteur ; Sanjiv Arora, Auteur Année de publication : 2003 Article en page(s) : p. 57-60 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Ultrasonic velocity and related parameters of solutions of synthesized epoxy resins (bisphenol and glycerol based, having different molecular weights) in 1,4-dioxane at 303.15K have been evaluated in the concentration range 0.5-24 % by weight, at 3 MHz in order to understand the molecular interactions and to get information on structural aspects. Bisphenol based epoxy resins showed polymer-solvent interactions at lower concentrations, while polymer-polymer type interactions dominated at higher concentrations. Glycerol based epoxy resin indicated different behaviour as the polymeric molecules interacted strongly and associated even at lower concentrations. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12158
in PAINTINDIA > Vol. LIII, N° 7 (07/2003) . - p. 57-60[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000467 - Périodique Bibliothèque principale Documentaires Disponible
Titre : The importance of emulsion pH Type de document : texte imprimé Auteurs : K. Nagaraj, Auteur Année de publication : 2003 Article en page(s) : p. 61-62 Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Note de contenu : - Theory
- What may happen if acidic emulsion is used in the formulation?
Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12159
in PAINTINDIA > Vol. LIII, N° 7 (07/2003) . - p. 61-62[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000467 - Périodique Bibliothèque principale Documentaires Disponible
Titre : UV technology : A brief overview Type de document : texte imprimé Auteurs : Susanta Kumar Panigrahi, Auteur Année de publication : 2003 Article en page(s) : p. 63-70 Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Note de contenu : - UV spectrum
- UV chemistry
- Initiation
- Propagation
- Termination
- Resins (oligomer)
- Reactive monomer (reactive diluents)
- Photo-initiator
- Additives
- Pigments
- UV at printers end
- Paper requirements for UV-printing : The main problems of paper under UV-influence
- Coating cracking : Odour
- Safety, health and environment (SHE)
- Post application
- Advantages : Process suitability – Space and time saving – Stock and cost suitability – Energy saving
- Matt paper advantage : Environmental and health sound
Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12160
in PAINTINDIA > Vol. LIII, N° 7 (07/2003) . - p. 63-70[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000467 - Périodique Bibliothèque principale Documentaires Disponible
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| Code-barres | Cote | Support | Localisation | Section | Disponibilité |
|---|---|---|---|---|---|
| 000467 | - | Périodique | Bibliothèque principale | Documentaires | Disponible |
