1-part polyurethane adhesive that hardens by humidity or spraying with a fine water mist.
Common Characteristics
LOCTITE® UR 7221 is a 1-part, solvent-free, moisture-cured polyurethane-based adhesive. At room temperature and the required humidity in the joint, sufficient strength will be obtained after approximately 2 to 4 h. For faster curing LOCTITE UR 7221 can be cured in a heated press. Maximum temperature must not exceed +70°C. Used in the manufacture of sandwich elements of porous substrates which contain humidity.
Long open time.
Foaming.
IMO approval for shipbuilding (wheel mark, low flame spread).
Solvent-free.
Technical Data
| Parameter | Value |
|---|
| Technology | 1K PU
|
| Viscosity | 5500-10500
mPa·s |
| Initial strength | 120-240
min |
| Consumption per m2 | 100-200
g |
| Service temperature range (short exposure) | -40 +80 (+100)
°C |