| Titre : |
Eco-friendly high performance coatings from vinyl ester resins |
| Type de document : |
texte imprimé |
| Auteurs : |
Devendra Agarwal, Auteur ; Arun Maithani, Auteur |
| Année de publication : |
2002 |
| Article en page(s) : |
p. 43-48 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Vinyl ester resins with varied acid values (12, 24,35, 40 and 49 mg KOH g-1 solid) were prepared by reacting an epoxy novolac resin with methacrylic acid. The coating samples were prepared by dissolving these ester resins in styrene as a reactive diluent (40% w/w). These solution coatings were cured using benzoyl peroxide as the initiator (2 phr). The curing conditions of the experimental coatings were determined by using the Differential Scanning Calorimeter (DSC) system. The DSC scans were obtained under dynamic and isothermal conditions to choose a temperature and time for completion of the curing reaction (90 mts at ∼85øC). The coatings were applied on sandblasted steel sheet panels with the help of a film applicator for an approximate film thickness of about 100 microns. These panels were dipped into various chemicals for a period ofone year to check their chemical resistance. The mechanical and electrical properties of these coatings have also been determined. The thermal stability of these coating compositions were estimated by considering the onset degradation temperature in the thermogravimetric analysis (TGA). The coatings based on vinyl ester resin with minimum acid value was found to be the most thermally stable and having excellent mechanical, electrical and chemical resistance properties. |
| Note de contenu : |
- Results and discussion : IR spectrum - Curing of samples - Thermal stability
- Chemical Resistance : Acild and alkali - Solvent resistance - Mechanical properties
|
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12341 |
in PAINTINDIA > Vol. LII, N° 4 (04/2002) . - p. 43-48
Aller sur edunet
Accueil
Eco-friendly high performance coatings from vinyl ester resins in PAINTINDIA, Vol. LII, N° 4 (04/2002)
