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瓦克在2015ECS上推出胶粘剂用有机硅封端聚合物

来源：林中祥胶粘剂技术信息网2015年02月05日

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WACKER at ECS’15: to Launch Silane-terminated Polymers for Adhesives

Munich -- At the European Coatings Show 2015, Munich-based chemical group WACKER will be unveiling novel, silane-terminated polymers for the formulation of industrial adhesives and for sealing flat surfaces. Known as GENIOSIL XT, the new binder makes it possible to produce materials that are extremely tear-resistant and at the same time highly elastic. This combination of properties unlocks applications in automotive and mechanical engineering that were previously closed to silane-curing polymers. The European Coatings Show will be held in Nuremberg, Germany, from April 21 to 23.

Windshield bonding: GENIOSIL XT silane-modified polymers from Munich-based chemical group WACKER make it possible to formulate strong but highly elastic adhesives of the kind needed for direct glazing.

GENIOSIL XT 50 and GENIOSIL XT 55 further complement WACKER’s portfolio of silane-curing binders. Both grades are based on silane-modified polyethers with a high density of crosslinkable silyl groups which cure to a tight-mesh network that is very strong but elastic. Adhesive layers and sealing membranes formulated with GENIOSIL XT possess high strength. However, they are also highly ductile and will tear only when subjected to strong forces. Damaged material exhibits no tendency to tear propagation.

GENIOSIL XT thus represents the first technically equivalent alternative to conventional polyurethane-based systems. By virtue of their properties, the new polymers are ideal for applications that repeatedly subject them to dynamic forces, such as vibrations in vehicles and washing machines. Up to now, applications of this kind were essentially the domain of isocyanate-curing polymer systems.