How to choose the right top coat for polyurea?
How to choose the weather resistant topcoat for polyurea? Because polyurea itself is an elastomer with strength and toughness, the supporting finish should also be flexible, or it might be cracking easily. It is recommended that the coating time be within the active period of polyurea spraying (different formulas are not the same, please consult technical personnel for details) to ensure that the topcoat and polyurea have good adhesion.
Production Description：
JHSW8601 high performance long durability waterproofing and anti-corrosion pure polyurea is the state of the art 100% solids, ultra fast cure, flexible, two component aromatic pure polyurea elastomer.
The system consists of A component, a quasi-prepolymer rich of free NCO, and B component, a mixture of polyetheramines, amine extenders and other additives.
JHSW8601 has great physical property and durability, It can be used for waterproofing and anti-corrosion.
JHSW8601 has passed relevant quality and safety tests, including:
✓ GB 4806.10-2016 Food Safety National Standard – Coatings and Coating Layers for Food Contact Use
Compliant with Chinese food contact safety requirements.
✓ SGS Tested – Compliant with EU REACH and RoHS Requirements
Meets international environmental and chemical substance control requirements.
Technical Data：
Testing Item | Indicator | Test Result | Individual Evaluation |
Appearance | Each component is uniform sticky liquid, | Each component is uniform sticky liquid, | Pass |
Solid content | ≥98% | 99% | Pass |
Gel time | ≤45s | 14s | Pass |
Tack-free time | ≤120s | 20s | Pass |
Tensile strength | ≥16.0MPa | 26.15MPa | Pass |
Elongation at break | ≥450% | 455% | Pass |
Tear Strength | ≥50N/mm | 89N/mm | Pass |
Low temperature bend test | ≤-40°C，No crack | -40°C，No crack | Pass |
Water impermeability | 0.4MPa, 2h No water leakage | No water leakage | Pass |
Dimensional change on heating | Extension ≤1.0% | Shrinknge 0.4% | Pass |
Adhesion strength | ≥2.5MPa | 3.9 MPa Cohesive failure of substrate | Pass |