| Titre : |
PUre cleanness : A waterborne fluoro-modified polyurethane system for permanent anti-graffiti- and anti-soiling-coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Rupert Stadler, Auteur ; Alois Maier, Auteur ; Norbert Steidl, Auteur |
| Année de publication : |
2003 |
| Article en page(s) : |
p. 63-66 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Angle de contact
Composés fluorés
Fluor
Groupe hydroxyle
Polymères -- Synthèse
Polyuréthanes
Revêtements anti-graffitis
Revêtements antisalissures
Revêtements en phase aqueuse -- Additifs
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
ANti-soiling coatings are trendy. Functional binders exhibiting anti-graffiti and anti-soiling properties are attracting ever increasing interest in the areas of research and development. A novel waterborne fluoro-modified 1-part or 2-part polyurethane system already meets all requirements of the VOC guideline of the European Community (EC Guideling 1999/13), generates surfaces with extremely low critical surface tensions and is comparable to "Teflon". |
| Note de contenu : |
- Temporary and permanent anti-graffiti systems
- Repelling water and oil : fluorinated polymers
- Synthesis of the fluoro-modified polyurethane dispersions
- Reaching the goal in two steps
- Hydroxyl groups enable crosslinking
- A high degree of crosslinking via oligomeric compounds
- Adhesion characteristics on the substrate remain
- Fluorinated building blocks increase contact angle
- Determination of critical surface tension by contact angle measurement
- Surface hardness can be adjusted
- Future projects : the molecular topology
- Fig. 1 : Structure of the IPDI based building block (Rf = fluorinated segment ; x = 1,2)
- Fig. 2 : Reaction of toluene diisocyanate (TDI) with a fluorinated alcohol and following conversion with diethanolamine (x = 1,2)
- Fig. 3 :Scheme of the synthetic procedure of a waterborne polyurethane system (x = 1,2)
- Table 1 : Contact angles of a water droplet on some selected fluorinated PU-films : crosslinked with "Rhodocoat" WT 2101
- Table 2 : Surface tension YL of different alkanes and their contact angle 0 on the investigated PUD-films |
| En ligne : |
https://drive.google.com/file/d/1f39pTDY2nk4ycmwzWH4KBXQ2leXqZ4L1/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40662 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8/03 (07-08/2003) . - p. 63-66
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PUre cleanness in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/03 (07-08/2003)
