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Surface properties of silicone release coatings / M. J. Owen in SURFACE COATINGS INTERNATIONAL, Vol. 79, N° 9 (09/1996)
[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 compositionPermalink : 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]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006575 - Périodique Bibliothèque principale Documentaires Disponible Organosilicone surfactants : Properties, chemistry, applications / Jay W. Adams in PAINTINDIA, Vol. XLVI, N° 10 (10/1996)
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Titre : Organosilicone surfactants : Properties, chemistry, applications Type de document : texte imprimé Auteurs : Jay W. Adams, Auteur Année de publication : 1996 Article en page(s) : p. 31-37 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Peinture eau' Encre Adjuvant 'Polymère silicium' 'Siloxane(diméthyl) polymère' 'Siloxane copolymère' 'Agent surface' Antimoussant Index. décimale : 667.9 Revêtements et enduits Résumé : Co-polymerisation of chemically inert, temperature stable and highly flexible dimethylpolysiloxanes with soluble, physical + chemical interactive and even chemically reactive organic components yields organo silicone surfactants having a wide array of uses in water based coatings and ink formulations. Primary uses include defoaming, deaerating, improved substrate wetting and enhances slip properties. Organosilicone surfactants can be characterised by their degree of solubility, mobility in liquid systems, functionality and molecular stability yet similar solubility characteristics and function. Emphasis is placed on the use of organo silicone surfactants as defoamers. Differences between defoaming and deaerating are illustrated. Relationships between mar resistance, slip properties, surface tension and adhesion are discussed. In types of modifications leading to new classes of reactive surfactants is presented. Note de contenu : BUILDING SURFACTANTS : Properties of silicones - Types of organo modification -Properties of organo silicones - Uses of organo silicones
- DEFOAMING VS. DEARERATING
- SURFACE WETTING
- FLOATING AND FLOODING
- SLIP PROPERTIES
- NEW DEVELOPMENT IN ORGANO CHEMISTRYPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13525
in PAINTINDIA > Vol. XLVI, N° 10 (10/1996) . - p. 31-37[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006508 - Périodique Bibliothèque principale Documentaires Disponible