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Product type
PU adhesives, or polyurethane adhesives, are versatile bonding agents known for their strong adhesion and flexibility. They are typically made from a polymer composed of organic units joined by urethane links, which allows them to bond a wide variety of materials including wood, metal, plastic, and ceramics. These adhesives cure through a chemical reaction that occurs when the components are mixed or exposed to moisture, resulting in a durable and resilient bond.
| Chemical base | Polyurethane |
| Curing method | Moisture or heat activated |
| Viscosity | Low to medium viscosity |
| Temperature resistance | Up to 120°C (248°F) |
| Bond strength | High tensile and shear strength |
| Color | Clear or amber |
| Shelf life | Typically 6 to 12 months |
When selecting PU adhesives, consider the specific materials you will be bonding and the environmental conditions they will be exposed to. Pay attention to the adhesive's curing method, as some may require moisture while others may need heat. It's also important to specify the desired bond strength and any relevant certifications for safety and performance. Always inquire about the recommended shelf life and storage conditions to ensure optimal performance.
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PU adhesives can bond wood, metal, plastic, ceramics, and more.
Curing time can vary, but it typically ranges from a few hours to 24 hours.
Yes, many PU adhesives are water-resistant or waterproof once cured.
Yes, they are suitable for outdoor applications due to their durability.
Use in a well-ventilated area and wear appropriate protective gear.
Yes, they can have a strong odor during application, which dissipates as they cure.
Yes, once fully cured, PU adhesives can be painted over.