good blend of cohesive strength and flexibility
Good toughness at low temperatures
Polyurethane Adhesives offer a good blend of cohesive strength and flexibility which makes them very tough, durable adhesives. Polyurethanes bond well to most unconditioned substrates and may require the use of solvent-based primers to achieve high bond strengths. They offer good toughness at low temperatures.
GLUDITEC PUR adhesives are supplied as one- and two-part systems in a wide range of viscosities. They cure to form thermoset polymers with good solvent and chemical resistance. They are extremely versatile and can range in cured form from extremely soft elastomers to rigid, extremely hard plastics.
One-part polyurethane adhesives can react with moisture to polymerize and cure. These adhesives are resistant to temperature extremes and flexible to provide vibration and impact resistance.
Two-part systems, on the other hand, offer unlimited depth of cure. The combination of flexibility and the ability to form strong bonds to a variety of substrates makes two-component urethane structural adhesives an excellent choice for bonding dissimilar materials.
Two-part urethane structural adhesives are different from one-part moisture-curing urethane sealants. Urethane structural adhesives are two-part formulations that react when mixed and do not require moisture to cure.
Reactive one-component polyurethane adhesives have isocyanate functions, which react with atmospheric moisture, or moisture in the substrate.
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