Balancing adhesion and cohesion in WB packaging adhesives / Bradley A. Jacobs in ADHESIVES AGE, Vol. 39, N° 12 (11/1996)  

[article]  inADHESIVES AGE > Vol. 39, N° 12 (11/1996) . - p. 40-44 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 [article]

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
001069	-	Périodique	Bibliothèque principale	Documentaires	Exclu du prêt

---

1 (1 - 1 / 1)