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China Suppliers Factory SPUA II Two-Component Spray Polyurea Waterproof Coating for Superior Protection
Characteristics of the Product
- The addition of urea group polymer with crosslinker and terminal amino polyols can significantly improve the material performance
- Suitable for soaking and waterproof occasions
- Does not contain harmful substances, and the paint film is non-toxic
- Strong bonding force with a variety of materials (including metals, ceramics and composites)
- Spraying molding, no flow hanging
Product Parameters
| Serial Number | Test Item | Test Result |
|---|---|---|
| 1 | Solid content | ≥98% |
| 2 | Gel time | ≤20s |
| 3 | Tensile strength | ≥19 MPa |
| 4 | Elongation | ≥550% |
| 5 | Tear strength | ≥50 N/m² |
| 6 | Adhesion (pull) MPa | 5 MPa |
| 7 | Alkaline resistance (immersed in 20% NaOH solution for 7 days) | No change |
| 8 | Water resistance (8h into boiling water) | No change |
| 9 | Acid resistance (immersed in 10% HCL solution for 7 days) | No change |
| 10 | Hardness shore A | 90–95 |
Applications
Roof waterproofing, villa platform, terrace and other waterproofing protection
Packing
Component A: 220 kg | Component B: 210 kg
Storage
This product should be stored in a cool, dry, ventilated indoor warehouse with a storage period of one year.
Construction Conditions
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.
Environmental Temperature and Humidity Requirements:
The construction environment temperature should be between 5–35 ℃, and the base surface temperature should be at least 5 ℃ higher than the air dew point temperature. The humidity range should be between 30% and 80%.
Ventilation Conditions:
Ventilation should be maintained during construction, but construction should not be carried out when there is strong wind.
Painting Methods and Requirements
Mixing Ratio:
Mix component B of the coating evenly before use. A : B = 1 : 1 (volume ratio)
Application Instructions:
Professional construction teams must use professional spraying equipment for construction, and the material temperature during spraying should be controlled between 50–80 ℃. 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
- 1.2 kg/mm/m²
- Waterproof national standard thickness 1.5 mm — single square meter dosage: 1.8 kg
- Anti-corrosion national standard thickness 2.0 mm — dosage: 2.4 kg
Construction Steps:
1
First Step: Clean the foundation, fill in the gaps
First Step: Clean the foundation, fill in the gaps
2
Second Step: Roll primer
Second Step: Roll primer
3
Third Step: SPUA Ⅱ polyurea spray construction
Third Step: SPUA Ⅱ polyurea spray construction
4
Fourth Step: Brush water-based PU top coat
Fourth Step: Brush water-based PU top coat
Frequently Asked Questions (FAQ)
Q
What is the mixing ratio of SPUA II polyurea coating?
The mixing ratio of SPUA II polyurea coating is A : B = 1 : 1 by volume. Component B should be mixed evenly before use to ensure optimal performance.
Q
What is the recommended application thickness for waterproofing and anti-corrosion use?
For waterproofing, the national standard thickness is 1.5 mm, requiring 1.8 kg per square meter. For anti-corrosion applications, the national standard thickness is 2.0 mm, requiring 2.4 kg per square meter. The general dosage rate is 1.2 kg/mm/m².
Q
What are the environmental conditions required during construction?
Construction should be carried out at an ambient temperature between 5–35 ℃. The base surface temperature must be at least 5 ℃ above the air dew point temperature. The relative humidity should be between 30% and 80%. Adequate ventilation is required, and construction should not be performed in strong wind conditions.
Q
How long does the paint film need to cure before it reaches full performance?
Under normal circumstances, the next construction process can begin after 12 hours of painting. However, the paint film should be fully cured for at least 7 days after the final coat to ensure the best overall performance of the coating.
Q
Is SPUA II polyurea coating resistant to chemicals and water?
Yes. SPUA II polyurea coating demonstrates excellent chemical resistance. Test results confirm no change after immersion in 20% NaOH solution for 7 days (alkaline resistance), no change after 8 hours in boiling water (water resistance), and no change after immersion in 10% HCL solution for 7 days (acid resistance).
Q
How should SPUA II polyurea coating be stored, and what is its shelf life?
SPUA II polyurea coating should be stored in a cool, dry, and well-ventilated indoor warehouse away from direct sunlight and heat sources. The shelf life of the product is one year from the date of manufacture when stored under the recommended conditions.