[article]
| Titre : |
Surface properties of silicone release coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
M. J. Owen, Auteur |
| Année de publication : |
1996 |
| Article en page(s) : |
p. 400-403 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Tags : |
'Matériau revêtement' Antiadhérence 'Siloxane(diméthyl) polymère' 'Propriété surface' 'Structure 'Energie 'Polymère silicium' |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
One of the most familiar features of silicone polymers is their excellent release behaviour, they are generally difficult to wet and most materials adhere poorly to them. This behaviour is usually attributed to their unusually low surface tension which is itself ascribed to two fundamental characteristics : the low intermolecular forces between the organic pendent groups along the polymer chain, and the unique flexibility of the siloxane backbone. Because of the extreme localisation of the fields of force in covalently bonded groups, the pendent methyl groups on polydimethylsiloxane ( PDMS ), the most common silicone polymer, behave as an array of close-packed methyl groups with little direct effect from the siloxane backbone despite its strong polarity. The backbone has a substantial effect on the ease with which the pendent group can be arrayed in the surface. The more flexible the backbone, the more readily will the lowest surface energy configuration be adopted. In this overly simple view of the roles of backbone and the pendent group, PDMS emerges as a favourable case of very low intermolecular force methyl groups along the most flexible polymer backbone known. |
| Note de contenu : |
- Surface structure
- Surface energetics
- Surface composition |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17097 |
in SURFACE COATINGS INTERNATIONAL > Vol. 79, N° 9 (09/1996) . - p. 400-403
[article]
|
Aller sur edunet
Accueil
Surface properties of silicone release coatings in SURFACE COATINGS INTERNATIONAL, Vol. 79, N° 9 (09/1996)
