| Titre : |
Balancing adhesion and cohesion in WB packaging adhesives |
| Type de document : |
texte imprimé |
| Auteurs : |
Bradley A. Jacobs, Auteur |
| Année de publication : |
1996 |
| Article en page(s) : |
p. 40-44 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Adhésifs en phase aqueuse
Adhésion
Copolymère acrylique acétate de vinyle
Groupement carboxyle
Pelage
Polyacétate de vinyle
Résistance à l'arrachement
Résistance au cisaillement
Résistance au fluage
Réticulation (polymérisation)
Thermogravimétrie
|
| Index. décimale : |
668.3 Adhésifs et produits semblables |
| Résumé : |
Challenges posed by low energy substrates, environmental regulations, product integrity and economic pressure place demands on adhesive performance that are increasingly difficult to meet using traditional technologies. PVOH-stabilized vinyl acetate/acrylics present a new approach to satisfying these demands. While VAAs have found initial acceptance in applications requiring Tgs below the range accessible with VAE technology, this work has demonstrated that VAAs offer advantages even at higher Tgs. Rovace HP-3442 exhibits an attractive combination of adhesion to a wide range of difficult-to-bond substrates, cohesive strength comparable to VAEs and good creep resistance. The scope of this study has been the performance of the copolymer backbones, but other advantages of using VAAs become apparent when compounding begins. PVOH stabilization gives the VAAs excellent mechanical stability and compatibility with common formulating raw materials. The incorporation of carboxyl functionality provides reactive groups for crosslinking chemistry. And the vinyl acrylic copolymers are compatible with a range of tackifiers and other additives that provide added versatility and flexibility for formulating to meet specific performance requirements (3). Couple these benefits with the economics of vinyl acetate copolymers and one can see low VAAS are the-state-of-the-art in waterborne adhesive emulsions. |
| Note de contenu : |
- ADHESION VS.COHESION
- EXPERIMENTAL : Quantitative adhesive strength - Quantitative cohesive strength - 180° peel adhesion - Hot shear strength - Thermogravimetric analysis (TGA)
- RESULTS AND DISCUSSION : Peel adhesion - Shear adhesion |
| En ligne : |
https://drive.google.com/file/d/1SJqmHAC8Nj95GNliW1XCmKH_fQtbEo33/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20547 |
in ADHESIVES AGE > Vol. 39, N° 12 (11/1996) . - p. 40-44
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Balancing adhesion and cohesion in WB packaging adhesives in ADHESIVES AGE, Vol. 39, N° 12 (11/1996)
