Composed of epoxy resin, ultrafine zinc powder, rust prevention powder, thickener, solvent, etc., polyamide resin is used as the curing agent. Two component packaging consisting of A and B. It has cathodic protection effect, excellent rust prevention performance, good adhesion, and good oil and water resistance.
Design purpose
Suitable as an anti rust primer for shipbuilding, gas tanks, oil tanks, bridges, and iron towers, as well as an anti rust paint for galvanized parts.
Physical parameters
Color: Gray
Gloss: Matte
Theoretical coating rate: 318g/㎡, 7.87 ㎡/L (based on 75 μ M dry film meter, excluding losses)
Specific gravity: approximately 2.50
Drying time: 23 ± 2 ℃: surface drying ≤ 30min, solid drying ≤ 24h
Complete curing: 23 ± 2 ℃: 7d
Flash point: 24 ℃ for component A, 27 ℃ for component B
Storage period: 12 months
Construction instructions
Mixing ratio: Component A (paint): Component B (curing agent)=20:2
Maturation time: 23 ± 2 ℃: 0.5-1h
Pot life: 23 ± 2 ℃: 8h
Construction method: high-pressure airless spraying, air spraying, manual brushing, roller coating
Diluent: X-7 epoxy coating diluent
|
|
High pressure airless spraying |
Aerated spraying |
Manual brushing and roller coating |
|
Maximum dilution amount |
20% |
20% |
5% |
|
orifice |
0.4-0.5mm |
2.0-2.5mm |
- |
|
Ejection pressure |
15-20MPa |
0.3-0.6MPa |
- |
Tool cleaning X-7 epoxy coating thinner
Paint film thickness Wet film: 124 μ m. Dry film: 75 μ M
Painting interval
|
Substrate temperature |
5℃ |
20℃ |
30℃ |
|
shortest |
48h |
24h |
2h |
| longest |
unlimited |
||
surface treatment
The steel surface needs to be treated by shot blasting or sandblasting methods, and it is required to meet the Swedish rust removal standard Sa2.5 level, or manual rust removal to reach St3 level.
Construction conditions:
The substrate temperature must be 3 ℃ above the dew point, and the relative humidity must be less than 85%.
When the temperature of the construction substrate is below 5 ℃, the reaction between epoxy and curing agent stops and construction cannot proceed.
Rear supporting coatings: CO7 dual component epoxy anti-corrosion topcoat, C18 chlorinated rubber anti-corrosion topcoat, C13 single component weather resistant acrylic topcoat, C041 dual component polyurethane enamel, etc.
Packaging specifications: 20 kilograms in an 18 liter container for component A, and 2 kilograms in a 3.7 liter container for component B.
matters needing attention
Due to the high content of zinc powder, it is recommended to use mechanical stirring to stir component A evenly before adding component B and stirring evenly;
During construction in high temperature seasons, dry spraying is prone to occur. To prevent dry spraying, diluents must be added to adjust until no dry spraying occurs;
The surface of zinc rich primer is prone to the formation of zinc salts. Before applying the subsequent coating, the zinc salts on the surface must be thoroughly removed, otherwise it will affect the interlayer adhesion of the paint film.
security
Please pay attention to the safety precautions on the packaging label. In addition, safety regulations stipulated by relevant national or local governments should also be followed. Avoid long-term inhalation of solvent vapors or paint mist, and do not come into contact with skin or eyes. When working in narrow or poorly ventilated areas, strong ventilation must be provided, and even if the ventilation conditions are good, protective equipment should be worn.
Notes
The above dry and wet film thickness refers to the indicators during high-pressure airless spraying;
The data related to this manual was obtained in the laboratory, and may vary slightly during actual use due to changes in environmental conditions;
If there are any changes to the above data, the latest manual of our company shall prevail without prior notice.
