In the process of spraying polyurea, we often encounter a variety of problems, one of them is crack. How do these cracks come about? Firstly let’s focus on the location of cracks, if the substrate underneath deformation or has overlap joint, is likely to be caused by the deformation of the substrate cracks. It seem that polyurea is elastic, so it won’t crack? No! This brings us to the principle of “zero extension theory”. The elongation at break of polyurea, needs a certain elastic deformation space, if there is no elastic deformation space, no matter how high the strength of polyurea, will be pulled crack by substrate. This is why we say "one point of polyurea, nine points of application", application technology has a very important impact on the success of polyurea project.
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.
Certifications & Compliance：
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 |