Bentonite waterstop is a kind of water swelling waterstop. It is also called putty type waterstop. Bentonite waterstop is new type of building waterproof material that is made of polymer, inorganic water swelling materials, rubber and additives being extrusion by machine without vulcanization process. This kind waterstop will produce 2-3 times the expansion deformation after soaking. So it can fill the construction joints to prevent leakage thoroughly. And its hydrophilic swelling has not lost after repeated long-term expansion. Our products use non-toxic and pollution-free materials. It will do not harm to people and environment. In addition, our bentonite waterstop with good corrosion resistance can be used in many constructions without damaged.
Features:
* Hydrophilic expansion has not lost after repeated long-term expansion.
* Corrosion resistance, aging resistance, acid and alkali resistance.
* High expansion rate, strong self-healing function.
* High tensile strength, high tear resistance.
* Clean and smooth surface, no impurities.
* Easy to install and replace.
* Economic choice, less cost.
| Item | PZ-150 | PZ-250 | PZ-400 | PZ-600 | |
| Hardness(Shore A) | 42±7 | 42±7 | 42±7 | 42±7 | |
| Tensile strength | 3.5 Mpa (min) | 3.5 Mpa (min) | 3 Mpa (min) | 3 Mpa (min) | |
| Elongation | 450% (min) | 450% (min) | 350% (min) | 350% (min) | |
| Expansion rate | 150% | 250% | 400% | 600% | |
| Repeated water immersion test |
Tensile strength | 3 Mpa (min) | 3 Mpa (min) | 2 Mpa (min) | 2 Mpa (min) |
| Elongation | 350%(min) | 350%(min) | 250%(min) | 250%(min) | |
| Expansion rate | 150% | 250% | 300% | 500% | |
| Low temperature bending(-20-C*2h) | No crack | No crack | No crack | No crack | |
