Special primer for galvanized iron (two-component)
Good adhesion to galvanized sheet, aluminum alloy sheet, zinc sheet and non-ferrous metal, tough paint film, good water resistance and salt water resistance.
1. Color and appearance: zinc yellow, smooth paint film
2. Fineness (scraper type): ≤40um
3. Non-volatile content (curing agent): ≥40%
4. Drying time: surface dry ≤4h, hard dry ≤24h
5. Adhesion (circle method): ≤Level 2
6. Hardness (swing rod type): ≥0.5
7. Saltwater resistance: (immersed in 3%NaCl, 24h) no foaming, no rusting, no falling off
1. Surface treatment: sand blasting and shot blasting to remove oxide scale, rust and oil, up to Sa2.5 or St3.
2. Substrate temperature: 3°C higher than the dew point.
3. Coating method: brush, roller, spray, high pressure airless spray.
4. Thinner: The epoxy paint thinner is adjusted to the appropriate viscosity for use.
5. Coating thickness: Mix evenly according to the ratio of A and B, and apply after curing for 20 minutes. Apply 1-2 coats, and the dry film thickness is 20-40um.
6. Overcoating interval: about 12 hours at 25℃.
7. Post-matching paint: nitro enamel, acrylic enamel, polyurethane enamel.
1. The construction site should have good ventilation facilities.
2. Construction workers should wear masks, glasses, gloves and other protective equipment to avoid skin contact and inhalation of paint mist and solvents.
3. Smoking is strictly prohibited on the construction site, and all sources of ignition are isolated.