YP637/657, Spray polyurea waterproof coating is a spray type two components elastic coating composed of components A and B. Component A is a semi prepolymer prepared by the reaction of isocyanate with oligomer Diol or ternary alcohol, and component B is composed of amino terminated resin, hydroxyl terminated resin, amine chain extender, pigment and additives. Elastic polyurea material formed through on-site spraying with professional equipment. This product has excellent mechanical properties, medium resistance, outdoor aging resistance, and excellent adhesion.
Product Characteristics
1. The addition of urea group polymer with crosslinker and terminal amino polyols can significantly improve the material performance.
2. Suitable for soaking and waterproof occasions.
3. Does not contain harmful substances, and the paint film is non-toxic.
4. Strong bonding force with a variety of materials (including metals, ceramics and composites) .
5. Spraying molding, no flow hanging.
Product Parameters
| Test Item |
Test result |
| Solid content |
≥94% |
| Gel time |
≤45s |
| Tensile strength |
≥10Mpa |
| Elongation |
≥350% |
| Tear strength |
≥40N/m2 |
| Adhesion (pull) Mpa |
5Mpa |
| Alkaline resistance (immersed in 20%Na0H solution for 7 days) |
No change |
| Water resistance (8h into boiling water) |
No change |
| Acid resistance (immersed in 10%HCL solution for 7d) |
No change |
| Hardness shore A |
85-90 |
Applications (Non-exposed type)
Spray polyurea is ideal for external walls, swimming pools, roofing, sports stands, and applications like industrial anti-corrosion, tunnel linings, and parking lots. It offers exceptional durability, waterproofing, and corrosion resistance, making it a versatile protective solution.
Packing
A: 220kg B: 210kg
Storage
This product should be stored in a cool, dry, ventilated indoor warehouse with a storage period of one year.
Construction Conditions
1. Base surface requirements: The concrete base surface should be cleaned, repaired flat, and polished to a certain roughness. Ensure that the concrete curing is completed, the strength reaches C25 or above, and the moisture content is less than 8%. After processing the base surface, the next process should be carried out as soon as possible.
2. Environmental temperature and humidity requirements: The construction environment temperature should be between 5~35 ºC, and the base surface temperature should be at least 5 ºC higher than the air dew point; The humidity range should be between 30% and 80%.
3. Ventilation conditions: Ventilation should be maintained during construction, but construction should not be carried out when there is strong wind.
Operation Methods and Requirements
Mix component B of the coating evenly before use
A: B=1:1 (volume ratio)
Professional construction teams must use professional spraying equipment for construction, and the material temperature during spraying should be controlled between 50~80 ºC.
In general, the next process can be carried out after 12 hours of painting. If the construction interval exceeds 24 hours, a layer of interface agent needs to be applied before construction can proceed. If encountering adverse weather such as rain after coating, a layer of interface agent must be applied before proceeding to the next process.
Under normal circumstances, the paint film should be cured for at least 7 days after completion of painting to ensure the best performance of the paint film.
Suggested Use QTY
1.2kg/mm/m2,
waterproof national standard thickness 1.5mm, single square usage 1.8kg.
anti-corrosion national standard thickness 2.0mm, usage 2.4kg.
Construction Steps:
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