High Performance Polyurethane Windshiled Adhesive, Black Color PU Sealant
Description:
This is a one component gun grade polyurethane based construction sealant, it is of low modulus and cures by reaction with atmospheric moisture to form a soft rubber like material with excellent elastic and adhesion strength.
Applications:
· Suitable for sealing joint of underground tunnel, bridge tunnel, drains, sewages pipes, epoxy floor, internal concrete walls.
· Suitable of sealing of various holes in walls and floor slab.
· Suitable for most building joints, including perimeter caulking of doors and windows.
Features:
· One-component, excellent extrudability, non-sag, easy to application
· Low modulus, high movement resistance
Technical Data:
Item
Range
Typical Data
Typical Data
Typical Data
Appearance
Black/White/Grey Homogenous paste
Black
Homogenous paste
White
Homogenous paste
Grey
Homogenous paste
Extrudability (ml/min)GB/T13477.4
≥80
105
100
100
Sagging Properties (mm) GB/T13477.6
0
0
0
0
Tack free time (min)
GB/T 13477.5
1~3
2
2
2
Volatile content (%)
GB/T13477.19
≤4
3
3
3
Shore A – hardness
GB/T 531.1
25~35
28
28
28
Tensile strength (Mpa) GB/T 528
≥0.8
1.0
1.0
1.0
Elongation at break (%) GB/T 528
≥600
700
700
700
Tensile modulus (Mpa) GB/T13477.8
23ºC / -20ºC
≤0.4(60%) / ≤0.6 (60%)
0.30 / 0.50
0.30 / 0.50
0.30 / 0.50
Tensile properties at maintained extension GB/T13477.10
No failure
No failure
No failure
No failure
Adhesion/cohesion properties at maintained extension after water immersion GB/T13477.11
No failure
No failure
No failure
No failure
Adhesion/cohesion properties at variable temperature GB/T13477.13
