Waterborne Polyurethane Overcoating
Applications:
It is suitable for home decoration, interior and exterior walls, high environmental protection and moist ground environment, such as food factory, electronics factory,pharmaceutical factory, cosmetics factory, paper factory,logistics warehouse, basement and other areas requiring clean ground.
Coating properties:
- Environmental protection, convenient construction
- Resistant to general chemical corrosion
- Beautiful and smooth, good texture
- Very good bonding strength
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Technical Index
| Pilot projects | unit | index | |
|---|---|---|---|
| Dry | Actual Dry | h | ≤1 |
| Time(25℃ ) | Actual Dry | h | ≤14 |
| Pencil hardness | – | ≥1H | |
| Impact resistance (500g steel ball) | g.cm | Pass | |
| Wear resistance (750g/500r) | g | ≤0.02 | |
| Bonding strength | level | ≥2 | |
| Resistant to 3% salt water | 7 days | No significant change | |
| Water resistance | 7 days | No significant change | |
| Resistant to 20% sodium hydroxide | 7 days | No significant change | |
| Resistant to Gasoline 120# | 7 days | No significant change | |
Construction procedure
| Construction method | Auxiliary material | Reference dosage | |
|---|---|---|---|
| Plain land | Do waterproofing | / | / |
| Primer coat | Roller to apply epoxy primer | / | 0.15kg/m² |
| Mortar layer | Scrape intermediate mortar layer | Quartz sand | 0.25-0.6kg/m² |
| Putty layer | Scrape intermediate putty layer | Quartz sand | 0.15kg/m² |
| Topcoat | Roller to apply epoxy topcoat | / | 0.15-0.18kg/m² |
| Finish coat | Roller to apply epoxy topcoat finish coat （Note:Suitable for all epoxy series finishes） | / | 0.06kg/m² |
