Polyurethane-based adhesive can be obtained by our customers as a 1-component or a 2-component system. Polyurethane systems can harden to form elastomers or duromers. Here the degree of interlinking and thus the strength is determined by the different raw materials, which are finally contained in the adhesive system. We offer a wide range of systems for applications from flexible to high rigidity both in 1-component and 2-component systems. Ask for the best suitable solution.
1-component polyurethane adhesives
The one-component adhesives consist prepolymers containing isocyanates, which harden when moistened. This reaction can take place in a temperature range from 5° to 40° C., but a relative humidity of 40% to 70% is necessary. After hardening, the adhesive joint has the elasticity of rubber. These systems are ideal when using materials that have a large variation in the rate of expansion under temperature and load, as for example in fixing windows in vehicles, or bonding GFK glass-fibre-parts to steel, and aluminium parts to a steel substrate.
In the automotive industry Betaseal ™ systems are the market leaders both for the direct glazing of vehicles and for glazing repairing. In addition to the appropriate adhesive systems, we offer all the necessary products for preparation and finishing, as well as the accessories required in the use of these proven window-fixing systems.
2-component polyurethane adhesives
The two-component adhesives consists of the polyol components (A) and the isocyanate components (B) and have to be mixed and worked in fixed proportions. The adhesives are also available as highly inflammable systems. The adhesive layer of 2-component polyurethane systems hardens to a tough rigidity or a rubbery elasticity, depending on the proportion of raw materials used. We supply systems with a curing time ranging from 2 to 120 minutes, obtainable in viscosities from volatile to highly viscous. 2-component PUR adhesives are excellently suited to flat-surface bonding in aircraft construction, vehicle construction, cladding and in shipbuilding.
Other appropriate applications are, for example, high-value assembly bonding and plastics bonding.