Pur-fectly clear / Jim Smith in ADHESIVES AGE, Vol. 44, N° 4 (04/2001)  

[article]  inADHESIVES AGE > Vol. 44, N° 4 (04/2001) . - p. 38-41 Titre : Pur-fectly clear : Lab tests indicate nitrogen-based systems provide superior PUR moisture protection Type de document : texte imprimé Auteurs : Jim Smith, Auteur Année de publication : 2001 Article en page(s) : p. 38-41 Langues : Américain (ame) Catégories : Colles:Adhésifs Polyuréthanes Réticulation à l'humidité Index. décimale : 668.3 Adhésifs et produits semblables Résumé : MOISTURE cure polyurethanes, commonly known as PURs, are single-component, high-performance adhesives that offer superior bonding at high temperatures. Their high SAFT (shear adhesion failure temperature) properties and ability to cross-link make them ideal for a variety of robust applications in industries such as automotive, building/construction, filter, appliance, bookbinding, and others. However, the same chemical properties that make PURs excellent for high-temperature, high-performance applications also pose challenges during material processing. Because PUR materials cross-link when exposed to moisture and do not remelt, it is important to keep them isolated from the atmosphere during processing and application Premature curing due to moisture exposure can lead to increases in material viscosity. Oxidative degradation can also increase viscosity and cause charring. Both of these effects can change dispense patterns and lead to system clogging and increased system maintenance. Note de contenu : - Surface curing jar test - Bottle testing for degradation and viscosity En ligne : https://drive.google.com/file/d/15Rx8sJtN-ILtyGPUUUTx1xLCOKreUDR4/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19791 [article]

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