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Next-generation composite adhesives / Frank Billotto in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 19, N° 2 (02/2012)  

[article]  inADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 19, N° 2 (02/2012) . - p. 15-16 Titre : Next-generation composite adhesives : Adhesive technologies are quickly advancing to accomodate customer needs Type de document : texte imprimé Auteurs : Frank Billotto, Auteur Année de publication : 2012 Article en page(s) : p. 15-16 Langues : Américain (ame) Catégories : Automobiles -- Matériaux Colles:Adhésifs Energie Epoxydes Matériaux hybrides Polyméthacrylate de méthyle Le poly(méthacrylate de méthyle) (souvent abrégé en PMMA, de l'anglais Poly(methyl methacrylate)) est un polymère thermoplastique transparent obtenu par polyaddition dont le monomère est le méthacrylate de méthyle (MMA). Ce polymère est plus connu sous son premier nom commercial de Plexiglas (nom déposé), même si le leader global du PMMA est Altuglas International9 du groupe Arkema, sous le nom commercial Altuglas. Il est également vendu sous les noms commerciaux Lucite, Crystalite, Perspex ou Nudec. Polyuréthanes Index. décimale : 668.3 Adhésifs et produits semblables Résumé : - Two-part polyurethane adhesives - MMA and MMA/epoxy hybrid structural adhesives - Additional adhesive solutions En ligne : http://www.adhesivesmag.com/articles/90577-next-generation-composite-adhesives Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19153 [article]

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Composite challenges / Brandon Willis in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 19, N° 2 (02/2012)  

[article]  inADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 19, N° 2 (02/2012) . - p. 17-19 Titre : Composite challenges : Innovative solutions are needed to bond composite structures Type de document : texte imprimé Auteurs : Brandon Willis, Auteur Année de publication : 2012 Article en page(s) : p. 17-19 Langues : Américain (ame) Catégories : Automobiles -- Matériaux Colles:Adhésifs Index. décimale : 668.3 Adhésifs et produits semblables Résumé : Adhesive. Bonding agent. Glue. These terms commonly refer to a material that is used to affix two surfaces (i.e., substrates) together for some duration of time. Specialized substrate bonding has become a ubiquitous operation in both personal and business applications, and bond quality has evolved to such a degree that industrial adhesives are now used in place of the mechanical fasteners of the past. Many consumers may be astounded to know that the car they drive or the airplane they fly on is held together in no small part by “glue.” But as products have evolved in key industries, the bonding surfaces have also changed, posing new challenges to adhesive suppliers. Metal is one of the most common substrates associated with adhesives in the industrial market. Automobiles, heavy trucks, freight trailers, agricultural, and heavy equipment have all traditionally been major users of steel, aluminum, and other metals and alloys. As the requirements of these vehicles have grown over time, however, the metals in many applications are slowly being replaced by composite structures. This trend, in turn, affects the adhesives industry. Note de contenu : - Environmental pressures and composites - Surface variation - Bonding dissimilar substrates - Overcoming obstacles - Table 1 : Surface energy of various substrates and materials En ligne : http://www.adhesivesmag.com/articles/90575-composite-challenges Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19154 [article]

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Structurally green / Sally Sinai in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 19, N° 2 (02/2012)  

[article]  inADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 19, N° 2 (02/2012) . - p. 20-22 Titre : Structurally green : Structural adhesives can reduce emissions and assist in the recycling of plastics to minimize waste and VOCs Type de document : texte imprimé Auteurs : Sally Sinai, Auteur Année de publication : 2012 Article en page(s) : p. 20-22 Langues : Américain (ame) Catégories : Adhésifs structuraux Assemblages collés Composés organiques volatils Epoxydes Méthacrylate de méthyle Index. décimale : 668.3 Adhésifs et produits semblables Résumé : Because recent trends in the marketplace emphasize green, manufacturers are looking for new and innovative ways to reduce emissions and volatile organic compounds (VOCs). This is particularly true in the automotive industry, where there is a real drive to design lighter cars that are less thirsty for fuel and consequently produce fewer emissions. Alternative materials such as plastics, fiberglass and aluminum are being used more often. Since 1990, some reports suggest that the replacement of automotive steel has avoided burning more than 22.2 billion gallons of fuel globally. In addition, it has been estimated that the automotive industry’s ongoing move to lighter materials will cut the world’s greenhouse gas emissions by 20%. In order to facilitate this shift toward lighter materials, designers have had to identify an appropriate method of joining new and dissimilar materials. The joining method must be fast and easy to achieve, and the resultant joints need to be strong and durable (at least on a par with the performance of welding and other traditional methods of joining steel components). This is where structural adhesives have helped to make a big difference. En ligne : http://www.adhesivesmag.com/articles/90585-structurally-green Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19155 [article]

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Measuring and regulating flammability / Todd Holder in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 19, N° 2 (02/2012)  

[article]  inADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 19, N° 2 (02/2012) . - p. 25-28 Titre : Measuring and regulating flammability : Adhesives manufacturers support the aviation industry with new flame-retardant materials for composite aircraft Type de document : texte imprimé Auteurs : Todd Holder, Auteur Année de publication : 2012 Article en page(s) : p. 25-28 Langues : Américain (ame) Catégories : Colles:Adhésifs Epoxydes Ignifugeants Composé chimique utilisé pour réduire l'inflammabilité. Il peut être incorporé au produit durant sa fabrication ou appliqué ultérieurement à sa surface. Industries aérospatiales -- Matériaux Tests d'efficacité Index. décimale : 668.3 Adhésifs et produits semblables Résumé : The introduction of commercial aircraft built with increasingly complex composite materials and configurations has led aircraft manufacturers, their suppliers and the Federal Aviation Administration (FAA) to review the test methods used to determine fire safety. A particular focus has been placed on reexamining the flammability performance criteria established by FAA 14 CFR 25.853, which governs materials used in aircraft interiors. These efforts began in 2009, when industry leaders recognized that some of the existing regulations did not directly measure the flammability of newly designed composite components built with new-generation materials and technologically advanced construction methods. Compounding the dilemma was the broad interpretation of required testing used by various aircraft manufacturers to determine whether assembled structures met the requirements of the 14 CFR 25.853 flammability regulations. Several of the regulation methods at issue included the testing of adhesives, insert potting compounds, and edge fills used in bonded structures and honeycomb core composite panels for aircraft interiors. Closely defined parameters for sample material, size, and configuration were also lacking from combustion and flammability tests. Conversely, some testing was perhaps being conducted unnecessarily when, for certain materials, years of collective flammability data already existed. Note de contenu : - Standardization task group - Aircraft materials applications - Adhesives and syntactics overview - Flame retardant adhesives and syntactics - New flammability standards - Table 1 : Comparison of flame-retardant adhesives and syntactics En ligne : http://www.adhesivesmag.com/articles/90576-measuring-and-regulating-flammability Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19156 [article]

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Assembly line fastening solutions / Kurt Schramer in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 19, N° 2 (02/2012)  

[article]  inADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 19, N° 2 (02/2012) . - p. 29-30 Titre : Assembly line fastening solutions : Engineering pressure-sensitive laminates deliver unmatched efficiencies when compared to other more traditional methods Type de document : texte imprimé Auteurs : Kurt Schramer, Auteur Année de publication : 2012 Article en page(s) : p. 29-30 Langues : Américain (ame) Catégories : Adhésifs sensibles à la pression Collage Stratifiés Index. décimale : 668.3 Adhésifs et produits semblables Résumé : From the early 1900s, when the first power-driven assembly line for vehicle production was introduced, manufacturers have sought ways to decrease labor costs, increase safety, improve turnaround times and implement efficient processes in an effort to positively impact their bottom line. The first assembly lines commonly included materials such as screws, bolts, nails and wet adhesives. Today’s assembly lines have been transformed; engineered pressure-sensitive laminates have displaced other conventional fastening devices like rivets and wet adhesives to become a preferred fastening method. One of the more significant time and cost savers in assembly line production has been driven by the implementation of engineered pressure-sensitive laminates as alternative fastening solutions. Note de contenu : - The basics - Engineered laminates vs. traditional mechanical fasteners - Engineered laminates vs. liquid adhesives En ligne : http://www.adhesivesmag.com/articles/90571-assembly-line-fastening-solutions Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19157 [article]

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Overcoming challenges / Ray Helferty in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 19, N° 2 (02/2012)  

[article]  inADHESIVES & SEALANTS INDUSTRY (ASI) > Vol. 19, N° 2 (02/2012) . - p. 31-34 Titre : Overcoming challenges : A variety of cavity baffle designs exists for water management within auto body pillar structures Type de document : texte imprimé Auteurs : Ray Helferty, Auteur ; Omar Walid, Auteur ; Philip Weber, Auteur Année de publication : 2012 Article en page(s) : p. 31-34 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Automobiles -- Matériaux Isolation acoustique Joints d'étanchéité Index. décimale : 668.3 Adhésifs et produits semblables Résumé : Expandable cavity sealers have become a critical component of the overall acoustic package that has contributed to the documented noise reduction in passenger car applications over the past 20 years. Solutions encompass a variety of technologies, some of which are highly engineered parts and assemblies. As the market for smaller and more fuel-efficient vehicles expands, design architectures of the vehicle platforms are evolving to include body designs with smaller spaces between adjacent layers of sheet metal. As this space, or cavity, between adjacent layers of sheet metal shrinks, the complexity of components that must be integrated into the space increases. Sophisticated arrays of airbags, corresponding wire harnesses, and water management tools are now standard requirements in the design process. To manage the complexity of these lightweight, fuel-efficient vehicle architectures, new engineering design solutions are required to meet ever-increasing and stringent acoustic requirements. The supply base of acoustic products to the OEMs has also matured, creating a very competitive environment, both regionally and globally. Design solutions that go beyond the basic functionality of a cavity filler are becoming more common. In one recent example, a design challenge presented by an OEM required improved visibility for the driver. Here, the hardware to direct water drainage is moved from outside the windshield pillar cavity body metal to inside the cavity metal. A new cavity filler solution is conceptualized to manage this unique packaging and acoustic performance need. Although it is in its infancy, the innovative solution, along with other means of water management, have been measured for insertion loss, compared and presented. Note de contenu : - 1. Evolution of the acoustic baffle - 2. Acoustic drain and flap assembly baffle - 3. Acoustic performance comparison En ligne : http://www.adhesivesmag.com/articles/90579-overcoming-challenges Format de la ressource électronique : Web Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19158 [article]

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Adhesives & Sealants Industry - Vol. 19, N° 2 - 02/2012 URL