China Suppliers Factory EP20901 Epoxy Vinyl Acrylate Coating - Fast-Drying, High Adhesion Coating Solution
Product Features
- 🔗 In the amphiphilic resin system, the tie-coat typically employs modified epoxy resin or copolymers containing compatible groups, enabling one side to bond well with the epoxy primer and the other side to be compatible with the vinyl topcoat.
- 💧 With good wettability and permeability, it can effectively wet the surface of epoxy coatings, forming strong physical/chemical bonds.
- 🔧 It has strong adaptability in construction, can be sprayed and brushed, and has a moderate drying time, making it suitable for shipyard environments.
- 🌊 Resistant to salt spray and seawater, meeting the requirements for ships to be exposed to marine corrosive environments for extended periods.
Recommended Use
🚢
Used for the combined application of anti-corrosion primer and anti-fouling paint in new shipbuilding and old ship maintenance.
Product Parameters
| Project | Data | |||
|---|---|---|---|---|
| Density (Kg/L) | 1.4 | |||
| Color | Grey | |||
| Solid percentage by volume % | 57 ± 2 | |||
| Reference dry film thickness (μm) | 100 | |||
| Theoretical coating rate (㎡/L) | 5.7 | |||
| Flash point | 38°C [100°F] | |||
| Volatile matter (g/L) | 396 | |||
| Gloss | No light | |||
| Drying time | 10℃ | 20℃ | 30℃ | |
| Dry to touch | 3 hrs | 1.5 hrs | 1 hr | |
| Actual drying | 24 hrs | 10 hrs | 8 hrs | |
| Coating interval | 10℃ | 20℃ | 30℃ | |
| Min | 24 hrs | 10 hrs | 8 hrs | |
| Potlife | 10℃ | 20℃ | 30℃ | |
| 10 hrs | 8 hrs | 6 hrs | ||
| Mixing ratio | Main agent : Curing agent (4:1 volume ratio) | |||
| Storage period | 24 months @ 25°C | |||
Application
🖥️ Construction Method
Airless spraying
Nozzle pressure: 14 MPa – 21 MPa
Nozzle hole diameter: 0.6 mm – 0.8 mm
⚙️ Surface Treatment & Conditions
To avoid condensation, apply on a clean and dry surface with a temperature at least 3°C [5°F] above the dew point.
The primer surface should be dry and free of contaminants (oil, grease, salt, water, dust, etc.), and recoated within the specified recoating interval.
Relative humidity during construction and curing must be less than 85%.
Disclaimer
⚠️
The information provided in this manual is the most comprehensive and correct information we have at present. Since the conditions of product use are beyond our control, the information here does not contain any guarantee, that is, we are only responsible to the buyer for the product selection. Due to the continuous development of our company's products and production processes, all information here is subject to our confirmation.
Frequently Asked Questions (FAQ)
1
What is the purpose of a tie-coat in marine paint systems?
A tie-coat acts as an intermediary bonding layer between the anti-corrosion epoxy primer and the anti-fouling topcoat. It ensures strong adhesion between the two incompatible paint systems, preventing delamination and extending the overall coating lifespan.
2
What is the recommended mixing ratio for this tie-coat product?
The product should be mixed at a volume ratio of 4:1, with 4 parts main agent to 1 part curing agent. Ensure thorough mixing before application to achieve optimal performance.
3
What are the surface preparation requirements before applying the tie-coat?
The substrate must be clean, dry, and free from all contaminants including oil, grease, salt, water, and dust. The application temperature must be at least 3°C (5°F) above the dew point to prevent condensation, and relative humidity must remain below 85% throughout the construction and curing process.
4
How long is the potlife of this product at standard temperature?
At 20°C, the potlife is 8 hours. At lower temperatures (10°C) it extends to 10 hours, while at higher temperatures (30°C) it reduces to 6 hours. Always plan your application schedule accordingly to avoid material waste.
5
Can this tie-coat be applied by brushing as well as spraying?
Yes. While airless spraying is the recommended construction method (nozzle pressure: 14–21 MPa, nozzle diameter: 0.6–0.8 mm), the product also supports brushing, offering strong adaptability for various shipyard environments and repair scenarios.
6
What is the shelf life of this tie-coat product and how should it be stored?
The product has a storage period of 24 months when stored at 25°C. It should be kept in a cool, dry environment, away from direct sunlight and heat sources, and sealed tightly after each use to maintain its performance properties.