LOCTITE HHD 3542, Polyurethane Hot Melt, Reactive, Long open time, Solidification and Moisture
LOCTITE® HHD 3542 is a reactive hot-melt adhesive based on polyurethane prepolymers. It is designed for robotic dispensing and has a relatively long open time. Immediately after solidifying in the bond line, the adhesive provides good initial strength. Then the secondary moisture cure cross-links the bonds for excellent elongation and structural durability. Fully cured product does not remelt.
FEATURES:
- One component – requires no mixing
- Medium viscosity
Technology | Polyurethane Hot Melt |
Chemical Type | Reactive Polyurethane |
Appearance (uncured) | Light yellow to amber solid |
Components | One component – requires no mixing |
Viscosity | Medium |
Cure | Solidification and Moisture |
Application | Bonding |
Specific Gravity @ 25 °C | 1.1 |
Viscosity, Brookfield – Thermosel,100°C,mPa·s (cP): Spindle 27 |
3,500 to 7,500 |
Open Time @ 25 °C, minutes, 1 mm bead | <4 |
Application Temperature, °C | 90 to 110 |