| Titre : |
Performance of bismuth vanadates in polyester/trimellictic acid triglycidylester powder |
| Type de document : |
texte imprimé |
| Année de publication : |
2013 |
| Article en page(s) : |
p. 23-25 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Formulation (Génie chimique)
Polyesters
Réticulation (polymérisation)
Revêtements poudre:Peinture poudre
Triglycidylester
Trimellitique, Acide
Vanadate de bismuth
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
How bismuth vanadates, covering the green shade yellow spectrum, are gaining importance on the market to produce lead-free, durable exterior powder coatings.
The introduction of one of the non-toxic alternative crosslinking agents trimellictic acid triglycidylester (Araldite PT 912 - hunstman) to replace TGIC in polyester powder has triggered a technical problem as regards to the use of bismuth vanadates.
If such a system is pigmented with classical bismuth vanadates, the film properties of the thermosetting powder coating cross-linked with Araldite PT 912 start to get impaired at elevated baking temperatures above 200°C and extended baking time.
This presentation will deal with facts about the performance of bismuth vanadates in a polyester/araldite PT 912 system, their physical and chemical characteristics, surface-modifications in order to highlight the need of designing and developing a suitable, new generation of pigments with no impact on crosslinking density while over-baking. |
| Note de contenu : |
- VISUALISATION OF THE PROBLEM : Baking conditions
- SEARCH FOR REASONS OF REFLOW EFFECT
- PRODUCT DESIGN
- HEAT RESISTANCE |
| En ligne : |
https://drive.google.com/file/d/14B4ICj_SfSK1Bcm3a6YVUBOO27aHvqZ_/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17488 |
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 203, N° 4581 (02/2013) . - p. 23-25
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