Description
Main Features
Suitable for use as a paint for new facilities and maintenance, specifically designed for areas where high gloss is not desired.
Product Description
BGA-40 Acrylic Polyurethane Topcoat, a two-component, high-solids, aliphatic acrylic polyurethane topcoat with excellent color retention in a semi-gloss finish, designed for steel structures in moderate corrosion conditions.
Physical Parameters
Color: Various
Volume Solids Content: 50±2%
Standard Dry Film Thickness: 60 micrometers (dry film), 120 micrometers (wet film)
Theoretical Coverage Rate: 5.9 m²/kg, 8.3 m²/L (at 60 micrometers dry film)
Actual Coverage Rate: Considering appropriate loss factors
Flash Point: 29±2°C (after mixing)
Application Instructions
Surface Preparation:
All surfaces to be coated should be clean, dry, and free of contaminants. Before painting, all surfaces should be assessed and prepared according to ISO 8504:2000 standards.
This product should always be applied over the recommended anti-rust paint. The primer surface should be dry, uncontaminated, and this product must be applied within the specified recoating interval. Areas with peeling and damage should be treated to meet the specified standard Sa2.5 (ISO 8501-1:1988) or SSPC-SP6, and these areas should be primed before applying this product.
The substrate temperature should not be lower than 5°C and should be at least 3°C above the air dew point temperature.
Mixing: This product is packaged in two cans to form one unit. Each time, it must be mixed in the specified ratio and used within the specified pot life. (1) Stir the base material (A) with a powered stirrer. (2) Mix all curing agent (B) with the base material (A) using a powered stirrer.
Thinner: BTA thinner
Application Methods: Airless spray, Air spray, Brush/Roller
Thinning Ratios: 0-5%, 5-10%, 0-5%
Airless Spray: Nozzle Size: 0.33-0.46mm, Spraying Pressure: 15 MPa
Drying Time:
(Wet film thickness 120μm, relative humidity 50%)
At 15°C: Tack-Free: 4 hours, Transportable: 24 hours, Full Cure: 10 days
At 25°C: Tack-Free: 1 hour, Transportable: 6 hours, Full Cure: 7 days
At 40°C: Tack-Free: 0.5 hours, Transportable: 6 hours, Full Cure: 2 days
Recoating Interval (with the same product):
(Wet film thickness 120μm, relative humidity 50%)
At 15°C: Minimum: 24 hours
At 25°C: Minimum: 12 hours
At 40°C: Minimum: 5 hours
Mixed Use Life:
At 15°C: 6 hours
At 25°C: 4 hours
At 35°C: 3 hours
The above data is for reference only. Actual drying times and recoating intervals may vary depending on film thickness, ventilation conditions, humidity, underlying paint, pre-assembly/disassembly requirements, and mechanical strength.
When using brush/roller application and certain colors, it may be necessary to apply two coats of this product to ensure consistent color. This is especially true when applying over dark primers or using certain lead-free bright colors (such as yellow and orange). It is advisable to apply a layer of a color-compatible intermediate or anti-corrosion paint beneath this product.
When recoating after weathering or aging, it is essential to thoroughly prepare the existing coating, removing surface contaminants such as grease, salt crystals, road dust, etc., before recoating with this product.
Tool Cleaning: Clean all tools with BTA thinner after use.
Safety: Handle this product with care. Before and during use, pay attention to safety information on the product label. Additionally, comply with safety regulations established by national or local government authorities. Avoid inhaling solvent vapors and direct contact with the paint on the skin and eyes. In case of skin contact, wash with appropriate cleanser, soap, and water. In case of eye contact, rinse thoroughly with water and seek medical attention. Take fire prevention, explosion prevention, and environmental protection measures. Only use this product in well-ventilated conditions.
Precautions
- Only apply this product in conditions where the temperature is above 5°C and application and curing can proceed normally. The temperature of the paint itself must be above 15°C, and the maximum relative humidity during the curing process should be below 80%, ideally between 40-60%. The application surface must be dry, clean, and have a temperature above the dew point to prevent condensation. Adequate ventilation should be provided during application in confined spaces and during drying. To prevent moisture condensation, the substrate surface temperature should be at least 3°C above the dew point, avoiding application in rainy, snowy, or foggy weather.
- Mix according to the packaging label ratios and mix thoroughly before use.
- Use the mixed paint within the recommended time frame, as exceeding this time can lead to gelation and render the paint unusable. The usable time may decrease with higher temperatures.
- Before applying the next coat, remove oil, condensation, welding spatter, and dust from the surface of the previous coat.
- Drying time is influenced by temperature, humidity, and film thickness.
- Recoating intervals depend on environmental conditions. If the maximum recoating interval is exceeded, the surface must be roughened to ensure interlayer adhesion.
- Store the paint in a cool, dry, and well-ventilated warehouse, away from heat sources and direct sunlight.
- Applicators should wear appropriate protective gear, and the construction site and storage area should have firefighting equipment. No smoking or open flames should be allowed to prevent fires.
- This product is intended for professional use.
Packaging Size:
25kg per set
Shelf Life:
When stored in a cool, dry, and shaded area, the unopened product has a shelf life of one year (at 25°C).
Disclaimer:
The information provided in this product manual is based on our knowledge obtained in the laboratory and in practice. Statements in the manual are advisory in nature. Since product use is typically beyond our control, we provide no guarantee beyond the quality of the product itself. We reserve the right to modify this manual without prior notice.
