1. Bonding Strength: PU adhesive exhibits good adhesion to a variety of materials, including metals, plastics, wood, and ceramics. Its bonding strength can be adjusted according to the formulation to meet different needs.
2. Flexibility: The molecular chain structure of polyurethane gives the adhesive layer a certain degree of elasticity, allowing it to withstand a certain amount of deformation without cracking. This characteristic makes PU adhesive suitable for dynamic loads or applications with significant thermal expansion and contraction.
3. Aging Resistance: PU adhesive has a long service life under normal conditions and can resist the erosion of ultraviolet rays, oxygen, and moisture. Its performance may gradually decline when exposed to harsh environments for extended periods.
4. Temperature Resistance: PU adhesive has a wide operating temperature range, typically from tens to hundreds of degrees Celsius. Beyond this range, the adhesive layer may soften or become brittle.
5. Chemical Stability: PU adhesive is resistant to most common chemicals, but may degrade in strong acids, strong alkalis, or certain solvents.
