Dépouillements

Thermosetting acrylic emulsion for coating - A literature review / Seena Joseph in PAINTINDIA, Vol. LIX, N° 12 (12/2009)

[article]  inPAINTINDIA > Vol. LIX, N° 12 (12/2009) . - p. 61-72 Titre : Thermosetting acrylic emulsion for coating - A literature review Type de document : texte imprimé Auteurs : Seena Joseph, Auteur ; V. A. Bambole, Auteur ; Prakash A. Mahanwar, Auteur ; Abhijit S., Auteur Année de publication : 2009 Article en page(s) : p. 61-72 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Emulsions Résines acryliques Revêtements Thermodurcissables Index. décimale : 667.9 Revêtements et enduits Résumé : Emulsions - In this paper a review of various methods of synthesis of acrylic emulsion coatings are mentioned. When a coating is applied to a substrate, solvent evaporates fromthe liquid phase resulting in the formation of a film. If the solvent used is organic solvent, the volatileorgaic compound (VOC) emitted may prove to be an environmental hazard. But if water is used as a solvent instead of the organic compound, then the VOC emitted to the atmosphere is negligible. With growing environmental awarenes and stringent laws being formed, the future of the coating industry depends on paint systems that emit minimal VOCs or no VOCs. The market study presented towards the end of this paper also indicates that there is a decrease in the market of solvent based coatings while there is a sharp increase in the market for water based coatings particularly acrylic coatings. The main objective of the review is to describe the acrylic polymer coating synthesis in detail based on the knowledge available in the open literature. Note de contenu : Acrylic resin / Acrylic emulsions : Various methods of synthesis of thermosetting acrylic coatings (resin system/coating) : Aqueous and non aqueous systems, hybrid systems - Thermal and photo degradation of acrylic resins - Conclusion and scope for acrylic coatings. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9046 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
012075	-	Périodique	Bibliothèque principale	Documentaires	Disponible

High thermal resistant insulating varnish based on natural resin shellac and alkyd/polyamide resins / D. N. Goswami in PAINTINDIA, Vol. LIX, N° 12 (12/2009)

[article]  inPAINTINDIA > Vol. LIX, N° 12 (12/2009) . - p. 73-80 Titre : High thermal resistant insulating varnish based on natural resin shellac and alkyd/polyamide resins Type de document : texte imprimé Auteurs : D. N. Goswami, Auteur ; P. C. Jha, Auteur ; K. Mahato, Auteur Année de publication : 2009 Article en page(s) : p. 73-80 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Isolants Vernis -- Constituants Tags : 'Vernis  isolant'  'Résine  gomme/laque'  alkyde/polyamide'  'Résistance  diélectrique'  thermique'  humidité' Index. décimale : 667.9 Revêtements et enduits Résumé : Shellac resins - Insulating varnish compositions have been developed based on blends of solutions of natural resin shellac and synthetic resins viz., alkyd/polyamide resins, producing films having high dielectric strength, thermal resistance (~230°C) and also resistance towards humidity/water besides other desirable properties. The film properties of such blends have so far been ot reported. The method of preparation has been made simple. The varnish compositions satisfy the basic requirements of insulating varnishes as per BIS specifications. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9047 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
012075	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Synthesis and curing of cardanol-based vinyl ester resins for applications in surface coatings - I / Minakshi Sultania in PAINTINDIA, Vol. LIX, N° 12 (12/2009)

[article]  inPAINTINDIA > Vol. LIX, N° 12 (12/2009) . - p. 89-108 Titre : Synthesis and curing of cardanol-based vinyl ester resins for applications in surface coatings - I Type de document : texte imprimé Auteurs : Minakshi Sultania, Auteur ; J. S. P. Rai, Auteur ; Deepak Srivastava, Auteur Année de publication : 2009 Article en page(s) : p. 89-108 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse thermique Cardanol Chromatographie sur gel Esters de polyvinyle Fourier, Spectroscopie infrarouge à transformée de Revêtements:Peinture Index. décimale : 667.9 Revêtements et enduits Résumé : Resins - Cardanol-based vinyl ester resin was synthesized by reacting the epoxy resin and methacrylic acid at an equivalent ratio of 1.0/0.9 in presence of triphenylphosphine (TPP) catalyst (1% by weight of the epoxy resin) and hydroquinone (200ppm as inhibitor) at 85°C in nitrogen atmosphere. The structural changes during the synthesis of VER were studied by Fourier-transform infrared spectroscopic (FT-IR) analysis. Gel permeation chromatographic (GPC) analysis gave the number - average molecular weight of cardanol-based epoxy resin (CNE) to be 780 gmole-1. A structure of synthesized cardanol-based VER was also proposed. A comparative study of vinyl ester resins (VERs), synthesized by using two different epoxy resins i.e. indigenous synthesized cardanol-based epoxidized novolac resin (CNE) and market procured 1138 EPN epoxy resin (EPN), was also proposed. A comparative study of vinyl ester resins (VERs), synthesized by using two different epoxy resins i.e. indigenous synthesized cardanol-based epoxidised novolac resin (CNE) and market procured 1138 EPN epoxy resin (EPN), was done in the present investigation. The resins were cured by using the mixture of resin, styrene and benzoyl peroxide in the ratio of 10:4:0.2 (w/w). Differential scanning calorimetric (DSC) technique was used to investigate the curing behaviour. It was found that the maximum peak temperatures for curing, in both the cases, were almost same. So, the cardanol-based VER may prove an alternative to EPN based VERs. Also, these resins may be environmentally friendly. Note de contenu : EXPERIMENTAL : Materials - Synthesis of vinyl ester resin from cardanol - Synthesis of phenol-based epoxidized novolac vinyl ester resin (PNEVER) - Curing of vinyl ester resins - Characterization of samples. RESULTS AND DISCUSSION : Synthesis of cardanol-formaldehyde novolac resin (CFN) - FT-IR analysis of cardanol-formaldehyde novolac resin - Determination of molecular weight and average chain length of novolac prepolymer - Synthesis of cardanol-based epoxidized novolac resin (CNE) - Synthesis of cardanol-based epoxidized novolac vinyl ester resin (CNEVER) - Synthesis of phenol-based epoxidized novolac vinyl ester resin (PNEVER) - Curing of vinyl ester resin - Thermogravimetric analysis. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9048 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
012075	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Combined corrosion/weathering : validating a concept with over a decade of research / P. Brennan in PAINTINDIA, Vol. LIX, N° 12 (12/2009)

[article]  inPAINTINDIA > Vol. LIX, N° 12 (12/2009) . - p. 109-114 Titre : Combined corrosion/weathering : validating a concept with over a decade of research Type de document : texte imprimé Auteurs : P. Brennan, Auteur ; D. Zeise, Auteur ; J. Regan, Auteur Année de publication : 2009 Article en page(s) : p. 109-114 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Revêtements  'Emulsion  acrylique'  Silicone  Détérioration  'Effets  ultraviolet'  'Corrosion/détérioration  '  'Test  corrosion  accéléré' Index. décimale : 667.9 Revêtements et enduits Résumé : Corrosion/weathering tests - When coatings degrade from UV exposure, they can become more susceptible to corrosion attack. In the early 1990s, ISO and ASTM standardised a combined corrosion/weathering cycle. Today, this is still considered the most effective test method for determining the usefulness of industrial maintenance coatings. This paper reviews current corrosion/weathering tests results on different industrial maintenance coating systems, including lower VOC coatings such as waterborne acrylic coatings and silicone-based coatings. Additionally, some of the industry's leading experts provide their insights into corrosion/weathering testing as well as recommendations for modified cycles developed for special applications. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9049 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
012075	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Nanotechnology & coatings Q & A / Vinayak M. Natu in PAINTINDIA, Vol. LIX, N° 12 (12/2009)

[article]  inPAINTINDIA > Vol. LIX, N° 12 (12/2009) . - p. 119-124 Titre : Nanotechnology & coatings Q & A Type de document : texte imprimé Auteurs : Vinayak M. Natu, Auteur Année de publication : 2009 Article en page(s) : p. 119-124 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Composés organiques -- Synthèse Matériaux hybrides Micro-ondes Nanoparticules Nanostructures Réactions chimiques Index. décimale : 667.9 Revêtements et enduits Résumé : How does microwave heating differ from the conventional heating ? What is the significance of microwave heating in chemical syntheses ? Why does microwave heating accelerate the rates of chemical reactions ? How can nanostructures be synthesized employing microwave energy ? Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9050 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
012075	-	Périodique	Bibliothèque principale	Documentaires	Disponible