Solvent-Free Epoxy Intermediate Coating for Floor Coating WANSHIELD®62208
WANSHIELD®62208 solvent – free epoxy intermediate coating is a solvent – free, high – solid – content, and thick – coat – applicable two – component floor coating. It can increase the thickness and sealing property of the coating system. When used with quartz sand during construction to form mortar, it can significantly enhance the mechanical strength of the coating system. Additionally, when adding inorganic aggregates such as quartz powder, it can be used as a joint – filling and repair material to improve the flatness of the ground.
Product Overview
WANSHIELD® 62208 is a solvent-free, high-solid-content, two-component epoxy intermediate coating designed for thick-film applications. It enhances the thickness and sealing properties of coating systems. When mixed with quartz sand to form a mortar, it significantly improves mechanical strength. Alternatively, when blended with quartz powder or other inorganic fillers, it serves as a patching material to improve surface levelness.
Key Features
- High mechanical strength, excellent impact resistance, and compressive strength, making it suitable for areas with vehicle traffic.
- Strong Adhesion and Sealing Property: It shows strong adhesion to the primer and topcoat and has excellent sealing performance.
- Chemical resistance to acids, alkalis, and other corrosive substances.
Applications
As a transitional layer between primer and topcoat, WANSHIELD® 62208 levels substrate surfaces, enhances topcoat adhesion and fullness, and improves the overall mechanical strength, weather resistance, and sealing properties of composite coatings. It is widely used in parking lots, shopping malls, electronics factories, food processing plants, hospitals, schools, office buildings, and other industrial flooring systems.
Physical & Chemical Properties
| Property | Technical Specification | Test Standard |
|---|---|---|
| Appearance (mixed) | Homogeneous, free of lumps | Visual inspection |
| Surface drying time (h) | ≤6 | GB/T 22374-2018 |
| Full curing time (h) | ≤24 | GB/T 22374-2018 |
| VOC content (g/L) | ≤60 | GB/T 23985-2009 |
| Alkali resistance (48h in saturated Ca(OH)₂) | No blistering, delamination; slight discoloration allowed | GB/T 22374-2018 |
| Compressive strength (MPa) | ≥45 | GB/T 2567-2008 |
Note: Data provided are typical values; actual results may vary under different environmental conditions. These specifications are not legally binding.
Construction Requirements
- Concrete strength ≥C25; the flatness should meet the requirement of a 2m alignment ruler with an error within 3mm.
- 28-day curing period required before application to achieve the best results.
- Ambient temperature: 5–35°C (avoid application below 5°C). as it may affect the project quality and the strength of the cured paint film.
- Substrate moisture ≤5%; ambient humidity ≤80%. Otherwise, problems such as blistering may occur, affecting the appearance.
- Ensure dust-free and ventilated environment (avoid strong airflow).
2. Surface Treatment:
- Grind the substrate to remove contaminants, loose layers, and create a rough surface for enhanced adhesion. For any concrete damaged, loosened, or contaminated by substances due to exposure to chemicals, it should be removed until the solid concrete is reached. Grinding treatment can remove the floating dust, stains, and loose layers on the surface of the construction substrate, and at the same time roughen the substrate surface, which is beneficial for improving the adhesion between the substrate and the epoxy floor coating.
3. Primer Application:
- Use WANSHIELD® 62201 (solvent-free epoxy primer) or WANSHIELD® 62305 (universal epoxy primer).
- Apply via squeegee or roller at 0.15–0.25 kg/m². Recoat if necessary.
- Ensure no missed coating areas and avoid over – coating. If necessary, apply a second coat of primer or repair the missed coating areas.
4.Intermediate Mortar Layer:
- After primer curing, mix Components A and B of WANSHIELD® 62208 at 5:1 ratio by weight.
- Add 80–120 mesh quartz sand, mix thoroughly, and apply via squeegee. Ensure uniform thickness without voids or buildup.
- Level rough surfaces with filler for topcoat compatibility.
Filler Layer (Putty)
- After mortar layer curing, mix Components A and B with quartz powder or putty.
- Fill gaps and level surfaces using a squeegee.
Technical Parameters
| Parameter | Specification |
|---|---|
| Mixing ratio (A:B) | 5:1 by weight; mix thoroughly with a high-speed agitator. |
| Pot life (25°C) | 1.5 hours (1 hour if poured on substrate). Shorter at higher temperatures. |
| Thinner | Not applicable (solvent-free). |
| Recoat interval | ≥24 hours under standard conditions (25°C, 60% RH). Adjust for temperature/humidity. |
Note: Drying time varies with temperature, humidity, film thickness, and ventilation. Higher temperatures shorten drying time.
Before formal project construction, the buyer must conduct tests in an environment consistent with the construction conditions to ensure the reliability of the coating system for the specific project. Formal construction is regarded as the buyer’s recognition of the product’s performance inspection. If the above operations are not followed, all responsibilities shall be borne by the buyer.
Packaging & Storage
Packaging:
Component A: 20kg iron drum
Component B: 4kg iron drum
Storage & Transport:
- Store in a dry, ventilated area at 5–35°C. Avoid heat and open flames.
- Shelf life: 12 months in original packaging.
Safety Precautions
Under normal construction conditions, the dried coating is non – toxic. Please use it with confidence. For detailed information on toxicity, safety, and first aid, please refer to the Material Safety Data Sheet (MSDS) of this product.
Skin: Soap/water → seek medical help if irritation persists.
Eyes: 15-min flush → immediate ophthalmologist visit.
Fire Rating:
This product is not classified as a flammable liquid, explosive, oxidizer, corrosive, toxicant, or radioactive hazardous material during storage and transportation, and is not a hazardous product.
Fire: Use CO₂, foam, or dry chemical extinguishers.
- In the absence of other fire-fighting agents, a large amount of fog-like water can also be used for spraying. After the fire is extinguished, the spilled materials should be cleaned up (refer to the leakage and spillage treatment section).
Leakage and Spillage Treatment
Disclaimer
Contact:
| Weight | 20 kg |
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