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Anti-Yellowing One-Component Polyurethane Adhesive for EPDM Sports Surfaces | China Suppliers & Factory
Characteristics of the Product
- Cures at room temperature.
- Excellent physical and chemical properties, strong adhesion, good weather resistance, and superior anti-yellowing performance.
- Easy application with high construction efficiency; designed thickness can be achieved in a single application.
Product Parameters
| Test Item | Index | |
|---|---|---|
| Physical Indicators | NCO content (%) | 3.55 ± 0.2 |
| Appearance (20℃) | Pale yellow viscous liquid | |
| Operation time (min/25℃) | 60 - 90 min | |
| Usage temperature (℃) | Ambient temperature | |
| Surface drying time (h/25℃) | 6 - 8 h | |
| Solidification time (h/25℃) | 24 - 48 h | |
| Mechanical Properties | Viscosity (MPa.S/30℃) | 2500 - 3000 |
| Tensile strength (MPa, 20% rubber content EPDM granules) | ≥ 0.4 | |
| Elongation at break (%, 20% rubber content EPDM granules) | ≥ 40 | |
Applications
- Base adhesive for permeable running tracks
- EPDM sports surfaces
Packing
200 kgs / drum
Storage
Sealed storage of coatings in dry, cool, and well-ventilated conditions, avoiding sunlight and rain, and keeping away from sources of fire.
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 environmental temperature at the construction site should be above 5 ℃, and construction can only be carried out when the relative humidity is less than 85%.
- Ventilation conditions: Ventilation should be maintained during construction.
Operation Methods and Requirements
Suggested Use Qty: Single square meter dosage ≥ 1.3 kg
- Select materials.
- Recommended ratio of single square dosage: ≥ 0.9 kg glue, 1 ~ 1.1 kg 0.5-2mm size granules, 0.3 ~ 0.4 kg rubber powder, 0.06 kg color paste.
- The granules size is recommended by 0.5-2mm. When the glue temperature is low in winter, the viscosity problem is solved by heating the glue to ensure the covering and bond strength. First the glue and color paste fully stir evenly, and then add granules and red rubber powder fully stir evenly, combined with the site situation can be appropriate to add an appropriate amount of environmental protection diluent to adjust the construction viscosity, can not be adjusted too thin, to prevent the material from penetrating into the particles and excessive atomization when spraying, the granules surface of the slurry packaging less resulting in future granules.
- After mixing evenly, spray once in both directions.
Frequently Asked Questions (FAQ)
What are the primary applications of this PU binder?
This polyurethane adhesive is primarily used as a base adhesive for permeable running tracks and EPDM sports surfaces.
What is the recommended dosage per square meter?
The suggested overall single square meter dosage is ≥ 1.3 kg. For the base mixture, the recommended ratio per square meter is ≥ 0.9 kg glue, 1 ~ 1.1 kg granules (0.5-2mm), 0.3 ~ 0.4 kg rubber powder, and 0.06 kg color paste.
What are the curing and drying times at 25℃?
At 25℃, the operation time is 60–90 minutes, the surface drying time is 6–8 hours, and the complete solidification time is 24–48 hours.
What environmental and base conditions are required for construction?
The site temperature must be above 5 ℃ with relative humidity below 85% and proper ventilation. The concrete foundation must reach C25 strength or above with a moisture content under 8%.
How should the polyurethane adhesive be stored?
It must be kept in sealed containers (200 kgs/drum) in dry, cool, and well-ventilated conditions, away from direct sunlight, rain, and ignition sources.
How do you handle viscosity issues during winter or low temperatures?
When temperatures are low, heating the glue can resolve viscosity issues to guarantee optimal coverage and bonding strength. An appropriate amount of eco-friendly diluent can also be added carefully without over-thinning.