Cold resistance of adhesive base material
Cold resistance of adhesive base material
The embrittlement temperature of the cured product is -60℃ or less, and it has excellent cold resistance.
Therefore, it is used in the civil engineering and construction fields as a concrete protection material and paint (for exterior use) in cold regions.
Dynamic viscoelasticity measurement
|
R-45HT series cured product |
R-15HT series cured product |
Hydroxyl terminated liquid Poly isoprene™ series Hardened material |
Hydroxyl terminated liquid Poly olefin™ Series Hardened material |
|
|---|---|---|---|---|
| Tg (α relaxation) | -87.3℃ | -73.6℃ | -64.9℃ | -59.3℃ |
| E' (@25℃) | 3.6E+06 | 5.6E+06 | 2.4E+06 | 4.7E+06 |
| tanδ (maximum value) | 0.87 | 0.39 | 1.08 | 0.87 |
| Shore A hardness | 52 | 60 | 42 | 57 |
*Each cured product uses liquid modified MDI as a curing agent.
Mixing conditions: [NCO]/[OH]=1.05
Curing conditions: Press 120℃ x 1 hour + Post curing 70℃ x 15 hours