AEROSIL® for Adhesives and Sealants - Adhesives & Sealants by ...
AEROSIL® for Adhesives and Sealants - Adhesives & Sealants by ...
AEROSIL® for Adhesives and Sealants - Adhesives & Sealants by ...
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<strong>AEROSIL®</strong> improves structural adhesives <strong>for</strong> construction of automobile bodies<strong>AEROSIL®</strong> – Advantages <strong>for</strong> <strong>Adhesives</strong><strong>and</strong> <strong>Sealants</strong> in the Automotive IndustryUsing <strong>AEROSIL®</strong> to optimize your production processes creates strong bondsBonding is the technology of the future inthe modern automotive industry. Thereare tailor-made adhesive systems <strong>for</strong> nearlyevery application in the construction ofvehicles. The use of structural adhesives<strong>for</strong> building automobile bodies hassteadily increased since the 1990s, <strong>and</strong>offers the following advantages overclassic bonding techniques, such as spotwelding:• Bonding of different materials, suchas steel, aluminum, magnesium, <strong>and</strong>plastics• For lightweight design components,such as bonded roof modules• Improved mechanical strength• No thermal influence on the materials• Low-stress composite structureswithout load peaks• Useful <strong>for</strong> difficult-to-reachcomponentsMeanwhile, many automobile bodies arebonded <strong>by</strong> weld bonding with an epoxystructural adhesive. Spot welding isused additionally to fix the part until theadhesive has cured completely.Polyurethane structural adhesives areused to bond automobile body parts madeof fiber glass rein<strong>for</strong>ced polyester resins.The automobile body parts are attached<strong>by</strong> a structual adhesive to a steel frame,which bears the main weight of thechassis <strong>and</strong> the engine. The properties ofstructural adhesives <strong>and</strong> the dem<strong>and</strong>splaced on them are extremely diverse<strong>and</strong> include:• Improved rigidity <strong>and</strong> strengthof the automobile body• Improved crash propertiesof components• Waterproofing of the rawautomobile body• Corrosion resistance• Resistance to washing out <strong>by</strong>means of rheology or pre-curing• Compatibility with immersion coatings• Adhesion to oily substrates, abilityto be thoroughly welded• Good viscosity stability <strong>and</strong>sag resistance• Process stability, string resistance• Resistance to aging, good storagestabilityAnother important application <strong>for</strong>adhesives in the automotive industry isthe window glass segment <strong>for</strong> the directsealing of windshields <strong>and</strong> side windows.Windshield sealants were introduced tothe automotive industry in the 1970s, <strong>and</strong>remain st<strong>and</strong>ard practice today.Polyurethane adhesives are used <strong>for</strong> thisapplication. The requirements <strong>for</strong>windshield sealants are:• Direct adhesion, adhesion on glass,plastics, <strong>and</strong> coated substrates• Fixing of components with adhesivesduring assembly• Improved structural integrity• Increased rigidity of the automobilebody• Low electrical conductivity8
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