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Electromagnetic radiation shielding paints / Suvarna Dagli in PAINTINDIA, Vol. LXI, N° 2 (02/2011)

[article]  inPAINTINDIA > Vol. LXI, N° 2 (02/2011) . - p. 45-49 Titre : Electromagnetic radiation shielding paints Type de document : texte imprimé Auteurs : Suvarna Dagli, Auteur Année de publication : 2011 Article en page(s) : p. 45-49 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Blindage (électricité) Ondes électromagnétiques Revêtements protecteurs Index. décimale : 667.9 Revêtements et enduits Résumé : Electromagnetic radiation is like pollution. As we are moving towards lead free alternative in paints to save our next generation from its harmful effects, it is high time to think about radiation sheilding paints. Harmful effects of electromagnetic radiation on humans as well as on electrical equipments are a matter of concern. Several studies have been done on the effects of electromagnetic interference. Coating industry has an important role to play as electromagnetic radiation shielding coatings are becoming popular. Coatings available for masonry as well as electrical and electronic products particularly in the fields of communications, information technology, transportation, safety and medical applications have been briefly reviewed in this paper. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11023 [article]

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Polyaspartics : an overview / Ravindra G. Puri in PAINTINDIA, Vol. LXI, N° 2 (02/2011)

[article]  inPAINTINDIA > Vol. LXI, N° 2 (02/2011) . - p. 51-55 Titre : Polyaspartics : an overview Type de document : texte imprimé Auteurs : Ravindra G. Puri, Auteur ; Pawan D. Meshram, Auteur Année de publication : 2011 Article en page(s) : p. 51-55 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Isocyanates Polyaspartiques Réactivité (chimie) Revêtements:Peinture Index. décimale : 667.9 Revêtements et enduits Résumé : Polyaspartics is the recent development in aliphatic polyurea/polyrethane coating. In conventional two component polyurethane coating the longer dry time and in case of polyurea shorter pot life restricts their use in coatings. Polyaspartic coating technology can be used to formulate a relatively fast drying two component coating which offers several advantages over conventional coatings including good outdoor stability, extended pot life and faster recoat windows leading to faster coating application and improved productivity. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11024 [article]

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Photoluminescent paints / Madhura Arvind Joshi in PAINTINDIA, Vol. LXI, N° 2 (02/2011)

[article]  inPAINTINDIA > Vol. LXI, N° 2 (02/2011) . - p. 60-63 Titre : Photoluminescent paints Type de document : texte imprimé Auteurs : Madhura Arvind Joshi, Auteur ; Madhura Shrikar Pawar, Auteur Année de publication : 2011 Article en page(s) : p. 60-63 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Aluminate de strontium Epoxydes Métaux de transition On appelle métal de transition un élément chimique du bloc d du tableau périodique qui n'est ni un lanthanide ni un actinide. Il s'agit des 38 éléments des périodes 4 à 7 et des groupes 3 à 12 hormis le lutécium 71Lu (un lanthanide) et le lawrencium 103Lr (un actinide). Photoluminescence Pigments à effets spéciaux Polyuréthanes Revêtements Terres rares Index. décimale : 667.6 Peintures Résumé : Energy conservation and disaster management being the need of the hour, many alternative energy sources have become the buzzword in the industry. Photo luminescent paints, a novel, efficient, non-toxic and non-hazardous technology unlike its predecessors like fluorescent and radioactive paints, have generated widespread interest in this regard. Of particular importance are strontium aluminate based paints doped with rare earth metals and auxiliary activators like transition metal and other rare earth metals. The mechanism of electron hole trapping of photons by the lattice defects in the crystal of the pigment, leading to an afterglow of about eight to ten hours even when the energy is cut off, is studied. The synthesis of these pigments by high temperature method and its effect on afterglow properties is determined. These pigments can be dispersed in water compatible organic film formers and can easily be applied by normal paint application techniques. Compared to other alternate energy resources these perform favorably in terms of cost, maintenance and time constraints and are an intelligent solution which will serve the purpose of energy conservation, road safety and disaster management combined with aesthetic appeal. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11025 [article]

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Two component polyurethane coatings based on epoxy polyol with polyisocyanate / J. Tennis Anthuvan in PAINTINDIA, Vol. LXI, N° 2 (02/2011)

[article]  inPAINTINDIA > Vol. LXI, N° 2 (02/2011) . - p. 73-76 Titre : Two component polyurethane coatings based on epoxy polyol with polyisocyanate Type de document : texte imprimé Auteurs : J. Tennis Anthuvan, Auteur ; G. Paruthimal Kalaignan, Auteur Année de publication : 2011 Article en page(s) : p. 73-76 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Epoxydes Fourier, Spectroscopie infrarouge à transformée de Polyisocyanates Polyols Résumé : Polyurethane coatings are formed from a chemical reaction between a poyol and a polyisocyanate hardener. Epoxy polyol resin was synthesized by reacting epoxy resin (diglycidyl ether of bisphenol A type), diethanolamine, cellosolve acetate and xylene at refluw temperature 60°C to 70°C for 6 Hrs. Two component polyurethane coatings were prepared by blending of epoxy polyol and hexamethylene diisocyanate (HDI) hardener. After the film coated with the prepared polyurethane coating, the various physical properties and mechanical properties were measured and compared. The formation of the polyol and polyurethane was supported by FTIR spectral data. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11026 [article]

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