1. Excellent weather resistance;

2. Good decorative performance of paint film (full and shiny, high hardness);

3. Good chemical resistance;

4. Excellent light and color retention performance;

5. High adhesion and excellent mechanical properties.

Case Background
The client, a municipal transportation construction group, is responsible for building a 320-meter-long river-crossing bridge. Due to the project's location in a high-humidity environment, the anti-corrosion requirements for the bridge's steel structure are extremely stringent. The original plan specified conventional alkyd paint, but testing revealed:

• Rust appeared after only 500 hours in salt spray testing

• Severe chalking occurred after 6 months of UV exposure

• Requires repainting every 2 years, resulting in excessive maintenance costs

• 
  

Chemi Tech Solution
Chemi Tech provided a specialized "Dual-Layer Acrylic Protection System":

1. Primer Treatment:

   • Blast cleaning to Sa 2.5 grade

   • Application of epoxy zinc-rich primer (Dry Film Thickness: 80μm)

2. Topcoat System:

   • Use of KMX-206 high-weather-resistant acrylic topcoat

   • Two-component application with ≥65% solid content

   • Total Dry Film Thickness: 120μm (achieved via two spray coats)

3. Technological Innovations:

   • Incorporation of nano-silicon oxide to enhance UV resistance

   • Unique molecular structure blocks chloride ion penetration

Construction Data:
▸ Application Temperature: -5°C ~ 40°C (breaking traditional limitations)
▸ Surface Dry Time: ≤30 minutes (adapting to tidal working windows)
▸ Coverage Area: ~280,000 m² (equivalent to 40 standard football fields)

Actual Performance (3-Year Post-Completion Inspection):
✓ No rust, blistering, or chalking
✓ Color difference ΔE < 1.5 (visually imperceptible)

"The anti-corrosion standards for this bridge were exceptionally rigorous. Chemi Tech's acrylic topcoat not only passed all laboratory tests flawlessly but also withstood the challenges of a real marine environment. It has now become our group's designated anti-corrosion product and is being promoted for use in other bridge projects."
— Prof. Lin, Chief Project Engineer

Storage:

Sealed storage in a cool and dry place, with a shelf life of 12 months. If it exceeds the shelf life and passes inspection, it can still be used.

instructions:

1. The surface of the workpiece requires the removal of rust, oil stains, dust, and other contaminants on the surface of the coated material. The surface should be clean to ensure excellent properties such as weather resistance, water resistance, gloss, and adhesion of the paint film.

The previous coat of paint must be completely dry.

2. For the two-component paint film that has been cured for a long time, it needs to be sanded with fine sandpaper and then coated with a topcoat.

3. Painting methods: brushing, spraying.

4. To ensure quality, please use the matching alcohol acid paint special thinner.

Security protection:

The construction site should have good ventilation facilities, and painters should wear glasses, gloves, masks, etc. to avoid skin contact and inhalation of paint mist. Smoking and open flames are strictly prohibited on the construction site.

note appended:

The data related to this instruction was obtained in the laboratory, and in actual use, the measured data may differ slightly due to environmental changes. If there are any changes to the above data, the latest manual of our company shall prevail without further notice.