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China Supplier Factory Two-Component Full PU Polyurethane Running Track Material for High-Performance Athletics
Characteristics of the Product
- Cured at room temperature.
- Excellent physical and chemical properties, all kinds of substrates have good adhesion.
- Convenient construction, high efficiency, one construction can meet the design thickness requirements.
- Using manual scraping or rolling coating construction, simple, convenient and controllable.
Product Parameters
| Test Data | Part A | Part B |
| Appearance | Red viscous liquid | Colorless clear liquid |
| Viscosity / 30℃ | 20000–30000 Mpa·s | 3500–4000 Mpa·s |
| NCO Content /% | / | 7.5 ± 0.2 |
| Property | Value / Note |
| Operation Time | 0.5–2h (The higher the temperature, the shorter the operation time) |
| Curing Time | 18–72h (The higher the temperature and humidity, the shorter the time, and the longer the vice versa) |
| Tensile Strength | 1.0–1.5 Mpa |
| Elongation at Break | 100–150% |
Applications
Schools, stadiums and other common used plastic track.
Packing
🛢️
Part A
250 kg — Iron Drum
🛢️
Part B
200 kg — Iron 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
- 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 & Humidity: 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%.
- 3 Ventilation Conditions: Ventilation should be maintained during construction.
Operation Methods and Requirements
- 1 Part A and Part B are stirred evenly according to the ratio of 5:1, and the appropriate proportion of catalyst is added according to the different temperature and humidity.
- 2 During construction, in order to ensure the adhesion between layers, sanding is performed (Note: sanding floating dust must be cleaned with a vacuum cleaner). Roll on solventless epoxy sealing primer. After the primer is completely cured, pour the uniform mixture of Part A and Part B onto the floor, scrape it evenly with a trowel (3mm or 5mm bread knife can be used according to the thickness), and proceed to the next process after curing. It is completely cured in 18 hours at normal temperature. If there is bad weather such as rain after painting, an interface agent must be painted before the next process.
Suggested Use Quantity
📐 Single square meter dosage: ≥ 1.3 kg/mm
Frequently Asked Questions (FAQ)
Q
What is the mixing ratio of Part A and Part B for this polyurethane track coating?
Part A and Part B should be mixed at a ratio of 5:1 by weight. An appropriate proportion of catalyst should also be added depending on the ambient temperature and humidity conditions at the construction site.
Q
How long does the coating take to fully cure at room temperature?
At normal room temperature, the coating is fully cured in approximately 18 hours. However, the total curing time can range from 18 to 72 hours depending on temperature and humidity — higher temperature and humidity accelerate curing, while lower conditions extend the curing time.
Q
What are the minimum base surface requirements before application?
The concrete base must be cleaned, repaired, and polished to achieve adequate roughness. The concrete should be fully cured with a compressive strength of C25 or above, and the moisture content must be less than 8%. The next process should begin as soon as possible after surface preparation.
Q
What environmental conditions are required during construction?
The ambient temperature must be above 5℃ and the relative humidity must be below 85%. Adequate ventilation must be maintained throughout the construction process. Construction should not proceed during rainy or extreme weather conditions.
Q
What is the recommended application quantity per square meter?
The recommended dosage is ≥ 1.3 kg per square meter per millimeter of thickness. Please ensure sufficient material is applied to meet the design thickness requirements in a single construction pass.
Q
How should this coating be stored, and what is its shelf life?
The coating must be stored in a sealed container in a dry, cool, and well-ventilated environment. It should be kept away from direct sunlight, rain, and any sources of ignition or open flame. Always ensure containers are tightly sealed after use to prevent moisture contamination of Part B.