It is made from epoxy resin as the base material, with ultrafine metal zinc powder, iron oxide red, polyamide resin as the curing agent, and additives added. It is packaged in two components, A and B, with excellent physical properties, cathodic protection, rust resistance, and good adhesion.
Design purpose
The steel after shot blasting or sandblasting is used as a maintenance primer, with a maintenance period of up to 6-9 months.
Physical parameters
Color: Red gray or gray
Gloss: Matte
Theoretical coating rate: 140g/㎡, 9.93 ㎡/L (based on 25 μ M dry film meter, excluding losses)
Specific gravity: approximately 1.39
Drying time: 23 ± 2 ℃: surface drying ≤ 5min, solid drying ≤ 24h
Complete curing: 23 ± 2 ℃: 7d
Flash point: 5 ℃
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 |
15% |
15% |
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: 100 μ m. Dry film: 25 μ M
Painting interval
|
Substrate temperature |
5℃ |
20℃ |
30℃ |
|
shortest |
24h |
8h |
6h |
|
longest |
unlimited |
||
surface treatment
Used in workshop assembly lines, steel surfaces are treated by shot blasting or sandblasting to remove oxide skin and rust, and are 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: C07 dual component epoxy anti-corrosion topcoat, C252 dual component epoxy coal asphalt anti-corrosion topcoat, C18 chlorinated rubber anti-corrosion topcoat, C123 dual component acrylic polyurethane topcoat, C22 alkyd enamel, C14 alkyd mixed paint, C041 dual component polyurethane enamel, C172 high chlorinated polyethylene anti-corrosion topcoat, etc.
Packaging specifications: 20 kilograms in a 20 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 final coating, secondary rust removal should be carried out using a cleaning level sandblasting or mechanical rust removal method, and all debris should be removed.
security
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 non ventilated areas, strong ventilation must be provided, and protective equipment should be worn during construction.
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 the actual product may differ slightly from it; If there are any changes to the above data, the latest manual of our company shall prevail without prior notice.
