| Titre : |
Challenging preservation options : Towards biocide-free water-borne coatings via innovative binders and additives |
| Type de document : |
texte imprimé |
| Auteurs : |
Jessica Levin, Auteur ; Wenqin Wang, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 28-33 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Antimicrobiens -- Suppression ou remplacement
Contamination microbienne
Copolymère styrène acrylique
Epaississants
Formulation (Génie chimique)
Liants en phase aqueuse
Peinture -- Conservation
Polyacryliques
Polyuréthane éthoxylé modifié de façon hydrophobe
Revêtements en phase aqueuse -- Additifs
Revêtements organiques
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Increasing regulatory restrictions mean that there are limited preservation options currently available to the paint and coatings industry for both in-can and dry-film preservation. Experimental binders and thickeners that are more robust to microbial spoilage offer a potential solution and pass challenge testing even when formulated into water-borne paints. |
| Note de contenu : |
- Regulations necessitate new preservation methods
- Commercially available solutions are limited
- Emergins technologies offer potential
- Development of robust raw materials for standard pH coatings
- Binders more robust against microbial spoilage
- Paint formulated with experimental binders passes challenge tests
- HEUR rheology modifiers that are less prone to microbial spoilage
- Path to reducing spoilage without biocides
- Fig. 1 : Paint performance data on paints based on commercial and experimental soft styrene acrylic binders
- Fig. 2 : Microbial challenge test plates 7 days after challenge 2
- Fig. 3 : A styrene acrylic paint was thickened with various HEURs added at 1.2 kg of polymer actives per 1000 I of paint. The bubble size is proportional to the Brookfield viscosity
- Table 1 : Rating system for estimating the level of microbial contamination on streak plates
- Table 2 : Microbial challenge test results for various acrylic and styrene acrylic binders at pH 7.0-9.5 supplied without biocide
- Table 3 : Paint formulation based on commercial and experimental soft styrene acrylic binders
- Table 4 : Microbial challenge test results for various HEUR rheology modifiers supplied without biocide added. Growth rating in parentheses as describes in Table 1
- Table 5 : Styrene acrylic screening formulation used to test type. 1. Type 2, and type 3 HEURs for thickening performance |
| En ligne : |
https://drive.google.com/file/d/1qZ0eMaU48b8cVGe97f2VUowmbbfvbaSS/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34174 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 5 (05/2020) . - p. 28-33
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Challenging preservation options in EUROPEAN COATINGS JOURNAL (ECJ), N° 5 (05/2020)
