Product Discription
The polyurea is a synthetic polymer obtained from the reaction of a diamine with a diisocyanate, polymerization reaction is very similar to polyurethane one, but in case of polyurea, resulting link is a “urea”, so it is called polyurea.Spray Polyurea Waterproof Coating is a two-component, solvent-free, fast-curing elastic waterproof material, consisting of Components A and B. ccording to the different film reaction can be divided into high elasticity spray pure polyurea waterproof coating (JNC) and high elasticity semi-polyurea elastic waterproof coating (JNJ), according to the physical properties can be divided into type I and type II.
Components A and B are mixed and sprayed by the spray gun of the special spraying equipment, resulting in a rapid reaction that forms a durable elastomer waterproof membrane.
Product Features
1. Rapid curing: Achieves strength in just 3 minutes, allowing for continuous spraying without drips.
2. Eco-friendly: Contains 100% solid content (VOC=0), fully compliant with environmental protection standards.
3. Thermal stability: Withstands short-term temperature impacts ranging from -50°C to 150°C.
4. Physical properties: Features excellent strength and high elongation for durability.
5. Strong adhesion: Bonds effectively with various materials, including steel, aluminum, copper, PU/EPS foam, wood, paper, and glass.
6. Flame retardant: Demonstrates a low fire spread rate and is self-extinguishing.
7. Efficient construction: Fast application with a daily coverage of at least 1,000 square meters per unit.
Technical Data Sheet(TDS)
| Spray Polyurea Waterproof Coating | Technical Indicators | ||
| Ⅰ | Ⅱ | ||
| 1 | Tensile strength (MPa) ≥ | 10 | 16 |
| 2 | Elongation at break (%) ≥ | 300 | 450 |
| 3 | Tear strength (N/mm) ≥ | 40 | 50 |
| 4 | Low temperature bending at -40℃ | no peeling, no cracking | |
| 5 | Water impermeability /2h | 0.4MPaImpermeable | |
| Metal mesh aperture 0.5±0.1mm | |||
| 6 | Bond Strength（MPa）≥ | 2.0 or substrate destruction | 2.5or substrate destruction |
| 7 | Solid content (%) | 96 | 98 |
| 8 | Gel time (s) (at normal temperature) ≤ | 45 | 45 |
| 9 | Surface drying time (at normal temperature) ≤ | 120 | 120 |
| 10 | Water absorption (%) ≤ | 5 | 5 |
| 11 | Heating expansion and contraction (%) elongation ≤ | 1 | 1 |
| 12 | Contraction ≥ | -1 | -1 |
