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Liquid polysulfide polymers for chemical- and solvent-resistant sealants / Volker burkhardt in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 25, N° 8 (08/2018)  

[article]  inADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 25, N° 8 (08/2018) . - p. 19-23 Titre : Liquid polysulfide polymers for chemical- and solvent-resistant sealants : Liquid polysulfide polymers, the oldest of the specialty elastomers, offer electrical properties, low temperature flexibility, and more Type de document : texte imprimé Auteurs : Volker burkhardt, Auteur Année de publication : 2018 Article en page(s) : p. 19-23 Langues : Américain (ame) Catégories : Construction -- Matériaux Mastics Poids moléculaires Polymères -- Applications industrielles Polymères -- Propriétés physiques Polymères -- Synthèse Polymérisation en émulsion Polysulfures Résistance chimique Réticulants Index. décimale : 668.3 Adhésifs et produits semblables Résumé : Liquid polysulfide polymers are the oldest specialty elastomer. They are characterized by solvent and chemical resistance, great electrical properties, low-temperature flexibility, oxygen and ozone resistance, high impermeability to many gases and moisture, good adhesion properties, and flex-crack resistance. These low- to high-viscosity polymers have highly reactive terminal thiol or epoxy groups and are widely used as sealants for insulating glass windows, sealants in construction, sealants for aircraft fuel tanks and fuselages, epoxy modifiers, or intumescent protective coatings. Liquid polysulfide polymers were re-discovered in 1926 by Joseph C. Patrick and Nathan Mnookin when they were trying to react a,v-alkyl halides with inorganic polysulfides (e.g., Na2Sx, x = 4-6). The inventors created high-molecular-weight rubbers with outstanding chemical resistance against solvents, gasoline, ultraviolet (UV) light and ozone. Note de contenu : - Synthesis and chemical structure - Typical properties - Curing liquid polysulfide polymers - Properties of cured liquid polysulfide polymers - Applications - Environmental and health issues - Table 1 : Molecular weight, SH-content and degree of branching - Table 2 : Physical properties - Table 3 : Content of peroxide-based curatives to cure polysulfide polymers - Table 4 : Application areas of liquid polysulfide polymers En ligne : https://www.adhesivesmag.com/articles/96384-liquid-polysulfide-polymers-for-chem [...] Format de la ressource électronique : Texte Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32003 [article]

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Applying rapid-cure adhesives with a meter/mix/dispense system in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 25, N° 8 (08/2018)  

[article]  inADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 25, N° 8 (08/2018) . - p. 34-35 Titre : Applying rapid-cure adhesives with a meter/mix/dispense system : A new meter/mix/dispense system offered BASF a flexible solution for applying rapid-curing sealants Type de document : texte imprimé Année de publication : 2018 Article en page(s) : p. 34-35 Langues : Américain (ame) Catégories : Construction -- Matériaux Imperméabilisation Mastics -- Application-dosage Mélanges (chimie) Produits d'étanchéité Index. décimale : 668.3 Adhésifs et produits semblables Résumé : In the roofing industry, application methods are limited for applying rapid-cure materials. To start, rapid-curing sealing membranes are delivered in 200-l drums. This container volume is often too large for most touchup and small project applications. In addition, the setup time for the standard rapid-cure material application method—plural-component spray system (hot spray)—is both time consuming and cost prohibitive for smaller projects. Due to high equipment costs and high levels of coating waste, rapid-cure coatings are often not used by applicators. To combat these challenges, roofing companies use polyurethane (PU) coating systems for small and touchup applications. However, PU coating systems have issues as well. The standard kit size for a PU coating system is 40 l. Smaller kits for touchup are often not available. In addition, the mixing and metering of the coatings used in a PU coating system are performed at the construction site, which brings a high risk of failure. Since most PU coatings cure in 5-30 sec, PU touchup applications usually require the use of a plural-component spray system, which features a long setup time and can be expensive. En ligne : https://www.adhesivesmag.com/articles/96390-applying-rapid-cure-adhesives-with-a [...] Format de la ressource électronique : Texte Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32004 [article]

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Evaluating adhesive options in packaging applications / Michael Kuebler in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 25, N° 8 (08/2018)  

[article]  inADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 25, N° 8 (08/2018) . - p. 26-29 Titre : Evaluating adhesive options in packaging applications : Testing which hot-melt adhesive to use for a particular packaging application can be a cost-effective solution Type de document : texte imprimé Auteurs : Michael Kuebler, Auteur Année de publication : 2018 Article en page(s) : p. 26-29 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésifs -- Emballages Adhésifs thermofusibles Essais dynamiques Traction (mécanique) Index. décimale : 668.3 Adhésifs et produits semblables Résumé : The global market for rigid packaging adhesives is expected to reach $18.2 billion by 2021, driven by an overall compound annual growth rate (CAGR) of 4.3% over the next five years, according to a Smithers Apex report.1 Growth within the global packaging adhesives market is being fueled by an increase in the consumption of packaged food and consumer goods, mostly in Asia, Africa and the Middle East, as these markets transition into a more Western style of consuming food and other products. Food packaging is shifting toward smaller single packs due to lifestyle and demographic changes, with the traditional nuclear family declining and single-person households increasing. "Packaging is the largest application within the adhesive sector and continues to support the growing trend of consumerism, pre-packed food, and other articles purchased in a packaged format," says Ciaran Little, director of Operations, Americas, at Smithers Apex. These changes in consumer behavior are driving manufacturers to evaluate packaging and adhesive effectiveness and costs. Note de contenu : - Hot-Melt Adhesive on Corrugated Substrates - Adhesive Testing - Fig. 1 : Single lap shear adhesive sample - Fig. 2 : Adhesive samples are tested in environmental chamber - Fig. 3 : Adhesive tensile testing at the Smithers Pira Lab En ligne : https://www.adhesivesmag.com/articles/96388-evaluating-adhesive-options-in-packa [...] Format de la ressource électronique : Texte Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32005 [article]

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Adhesives & sealants industry (ASI) Vol. 25, N° 8 URL