| Titre : |
A new route to high-performance flexible adhesives and coatings : 2K STPE/epoxy technology : Combining a silyl-terminated polyether with epoxy technology as a two-component system provides a balance of high-strength performance and flexibility with bonding properties similar to traditional epoxies |
| Type de document : |
texte imprimé |
| Auteurs : |
Ruolei Wang, Auteur |
| Année de publication : |
2020 |
| Article en page(s) : |
p. 36-39 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Adhésifs -- Additifs
Adhésifs -- Propriétés physiques
Adhésifs dans la construction
Assemblages collés
Colles bi-composante:Adhésifs bi-composant
Epoxydes
Essais d'adhésion
Essais dynamiques
Formulation (Génie chimique)
Matériaux hybrides
Polyéthers silylés
Résistance au pelage
|
| Index. décimale : |
668.3 Adhésifs et produits semblables |
| Résumé : |
In the past half-century, the global market for sealants and adhesives in construction and industrial applications has experienced significant growth. Polyurethane-, silicone-, and silyl-terminated polyether (STPE)-based materials enjoy substantial market share in sealant applications due to their superb flexibility and adhesive characteristics, while epoxy products have remained a dominant force in adhesive applications due to their outstanding strength and good adhesion properties after surface treatment.
While these chemistries can meet most application requirements, performance gaps still need to be filled that require a balance of strength, flexibility, and adhesion. Examples of such opportunities include a primer that can endure structural movement and an adhesive that can withstand substrate vibrations or oscillations.
STPEs have an established history and are known to provide benefits such as being free of solvents and isocyanate while offering primerless adhesion to a wide range of materials, including metals, wood, glass, and many plastics. A more recent development by Kaneka North America LLC is to combine MS Polymerâ„¢, an STPE, with epoxy technology as a two-component (2K) system to provide a balance of high-strength performance and flexibility. The cured compound also provides bonding properties similar to traditional epoxy materials. |
| Note de contenu : |
- Curing mechanism
- Formulation considerations
- Potential applications
- Adressing unmet needs
- Table 1 : Typical properties of self-levelling 2K STPE/epoxy
- Table 2 : Typical properties of non-sag 2K STPE/epoxy
- Table 3 : STPE:epoxy formulations with various additives packages
- Fig. 1 : Impact of additives on the physical properties of a cured 2K STPE/epoxy
- Fig. 2 : 2K STPE/epoxy adhesion strength testing results. Red circles indicate substrate failure
- Fig. 3 : Diagram of adhesion test piece
- Fig. 4 : Wet concrete peel strength comparison |
| En ligne : |
https://www.adhesivesmag.com/articles/97630-a-new-route-to-high-performance-flex [...] |
| Format de la ressource électronique : |
Html |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34039 |
in ADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 27, N° 3 (03/2020) . - p. 36-39
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A new route to high-performance flexible adhesives and coatings : 2K STPE/epoxy technology in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 27, N° 3 (03/2020)
