| Titre : |
Versatile and valuable : The advantages of using isocyanatosilanes in adhesive and sealant applications |
| Type de document : |
texte imprimé |
| Auteurs : |
Misty Huang, Auteur ; Patrice Lehmann, Auteur ; Bruce Waldman, Auteur ; Fred Osterholtz, Auteur |
| Année de publication : |
2002 |
| Article en page(s) : |
p. 33-37 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Colles:Adhésifs
Composés aliphatiques
Isocyanates
Joints d'étanchéité
Liants
Mastics
Polyols
Polyuréthanes
Résistance au rayonnement ultraviolet
Résistance aux conditions climatiques
Résistance chimique
Silanes
|
| Index. décimale : |
668.3 Adhésifs et produits semblables |
| Résumé : |
The advantages of silane-modified polymeric binders have been recognized in coatings, adhesives and sealants markets. The increased accessibility of isocyanate silanes to the market will allow this technology to grow further, due to processing simplicity and applicability to a wide range of polymers.
The use of isocyanate silanes and polyols to make precursors for elastomeric sealants generally provides silylated polymers with lower viscosity than that obtained by other methods. easier formulation and mixing is one benefit.
As with conventional polyurethanes, the properties of these SPUR polymers can be tailor-made to range from low modulus to high modulus to meet the demands of different markets. These silane-terminated prepolymers may be used for formulating on-part room temperature moisture-cure sealants or adhesives with identified benefits such as superior adhesion performance, UV stability/weatherability and chemical resistance. Moreover, the characteristic of relatively fast cure makes the isocyanate silane-capped SPUR technology worth examining for insulated glass and automotive windshield sealant applications.
The aliphatic isocyanate groups of Silquest A-Link 35 and Silquest A-Link 25 silanes allow them to be used in the modification of a wide range of polymers that contain functional groups of OH, SH and NH2. The modification process can be carried out in different types of apparatus. The silane-modified polymers provide the enhanced mechanical properties, excellent adhesion and improved high-fail temperature in shear that can especially beneficial to hot melt adhesives. |
| Note de contenu : |
- Preparation of sealants based on SPUR prepolymers
- Property and performance testing
- A simple process for making silane-modified polymers |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20001 |
in ADHESIVES AGE > Vol. 45, N° 4 (04/2002) . - p. 33-37
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