Waterborne Breathable Topcoat
Applications:
Water-based breathable surface belongs to the twocomponent material, fully meet the national environmental testing standards, it can do low VOC testing, no visible water wet ground can be constructed, waterproof effect is good, it contains a small amount of BCS and IPA, which is suitable for humidity is relatively large ground construction.
Coating properties:
- Unidirectional permeability, high moisture permeability
- Long-term water permeability evaporation rate as high as 0.5g/nV day
- Imported water-based materials, excellent mixability
- Strong hydrolysis resistance
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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 120# | 7 days | No significant change | |
Construction procedure
| Construction method | Auxiliary material | Reference dosage | |
|---|---|---|---|
| Plain land | Do waterproofing | / | / |
| Primer coat | Roller with water based epoxy primer | / | 0.15kg/m² |
| Mortar layer | Scrape to apply mortar layer | Quartz sand | 0.25-0.6kg/m² |
| Putty layer | Scrape to apply putty layer | Quartz sand | 0.5kg/m² |
| Scrape topcoat | Scrape topcoat of the same color | Quartz sand | 0.1kg/m² |
| Topcoat | Roller or spray water-based epoxy topcoat | / | 0.15kg/m² |
