Waterborne Polyurethane Overcoating
Applications:
Suitable for highly environmentally friendly and humid environments such as food factories, electronics factories, pharmaceutical factories, cosmetic factories, paper mills, logistics warehouses, basements, home furnishings, tool walls, wall color changes and other areas where needs clean floors.
Coating properties:
- Environmental protection, convenient construction
- Resistant to general chemical corrosion
- Beautiful 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 waterborne epoxy primer | / | 0.15kg/m² |
| Mortar layer | Scrape waterborne epoxy midcoat | Quartz sand | 0.25-0.6kg/m² |
| Putty layer | Scrape waterborne epoxy putty layer | Quartz sand | 0.1kg/m² |
| Topcoat | Roller or spray waterborne polyurethane topcoat | / | 0.12kg/m² |
| After completion, the whole ground should be bright and clean, with uniform color and no hollows. | |||
