[article]
| Titre : |
The effect of various parameters on the performance of powder coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Y. Veerabhadra Rao, Auteur ; M. Komaraiah, Auteur ; K. V. S. N. Raju, Auteur ; M. Yaseen, Auteur |
| Année de publication : |
1996 |
| Article en page(s) : |
p. 123-130 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The performance of powder coatings depends on the quality of pre-treatment, other parameters like curing schedule, temperature and duration of baking, thickness of coating as well as power pack voltage have a profound influence on the overall performance of powder coatings. With an objective to establish these parameters for a commercial black epoxy powder, the changes in physical properties of its coatings have been studied. A coating of 70-100um thickness is found to have good physical properties when backed as per specified temperature and duration. The scratch hardness, gloss and rocker hardness as well as other properties of the powder coatings were found to be optimum when they were stoved at around 180°C. A duration of 15 minutes for stoving the powder coatings at around 180-190°C is found to result in their optimum properties. In order to give a good performance, the commercial black epoxy powder coat may not be subjected to powder packed voltage beyond 70-80 KV. The resistance of the coatings prepared as per selected parameters to hot water, detergents and aromatic solvents has been observed to be very good. |
| Note de contenu : |
- Experimental : - Materials - Preparation of test specimens
- Procedure : - Scratch hardness - Rocker hardness - Gloss - Bend test - Adhesion - Resistance to petrol - Dry film thickness (DFT)
- Results and discussion : - Effect of thickness and number of passes on the properties of coatings - Effect on stoving temperature - Effect on stoving time - Effect of voltage - Observations on adhesion, flexibility and resistance to petrol of the coatings - Observations on other properties of the baked coatings |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13455 |
in PAINTINDIA > ANNUAL 1996 (1996) . - p. 123-130
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