DERAYAN Coating
DERAYAN is an advanced modified epoxy coating developed by PodLee (USA). By incorporating flexible silicone materials with low-temperature flexibility and minimal permanent deformation, this product enhances the toughness of traditional epoxy coatings while maintaining hardness after curing, effectively preventing cracking.
PodLee’s innovative solid-filling technology significantly extends the penetration path of corrosive media, providing cured coatings with exceptional resistance to medium penetration and wear resistance. Compared to conventional epoxy coatings, DERAYAN delivers superior adhesion and corrosion resistance.
Intended Uses
Internal and external anti-corrosion for pipelines in marine environments.
External anti-corrosion for steel structures, mechanical equipment, cast iron components, and concrete structures
Advantages
Excellent anti-penetration, wear resistance, and anti-corrosion – Ensures safety and reliability.
High-solid formula with low VOC emissions – Environmentally friendly.
Outstanding waterproofing – Provides long-term anti-corrosion protection for underwater components and pipelines.
Typical Characteristics
| Name | Test Data | Testing Standards | |
|---|---|---|---|
| Cured Density (g/cc) | 1.5 | – | |
| Solid Content (%) | 87 | ASTM D3960 | |
| Pencil Hardness (H) | 4 | ASTM D3363 | |
| Water Resistance (1000h) | Pass | ASTM D2247 | |
| Adhesion (psi/MPa) | Sandblasted steel | 1,087 (7.5) | ASTM D4541 |
| Chemical Resistance (90 Days) |
HCl (10%) | Pass | ASTM G20 |
| NaOH (10%) | Pass | ||
| NaCl (10%) | Pass | ||
| Salt Spray Test (h) | 5,000 | ASTM B117 | |
| Service Temperature (℉/℃) | -22 (-30) – 194 (90) | – | |
Package
7 KG/Kit (1 kg additional specialized thinner included).
Surface Preparation
Proper surface preparation is critical for optimal performance:
Degrease and desalinate surfaces. Rinse salt residues with freshwater in marine environments.
Use mechanical sandblasting or grinding to remove rust (rust removal grade SA2.5 or ST3).
Wipe surfaces clean with a dry cloth to remove moisture and loose rust.
Mixing
Ensure ambient temperature is 50 – 104℉ (10 – 40°C).
Mixing ratio: 6:1 (By Weight).
Weigh components accurately and stir mechanically for 3 – 5 minutes.
Thinner content should not exceed 10% of the total mixture.
Application
Apply using a brush or roller.
Single-coat thickness: 200 – 250 μm.
Apply 2–6 coats depending on operating conditions. Consult PodLee agents for specific requirements.
Minimum recoating interval: 5 hours.
Coverage
Based on a 250 μm thickness: 1 kg kit will cover 2.2 m2 (23.6 ft2).
Pot Life After Mixing
50℉ (10℃) – 3 h 70℉ (25℃) – 2 h 104℉ (40℃) – 1.5 h
Curing Schedule
| Temperature | 50℉ (10℃) | 70℉ (25℃) | 104℉ (40℃) |
|---|---|---|---|
| Surface Dry (h) | 4 | 2 | 1.5 |
| Complete Curing (h) | 18 | 10 | 6 |
Clean Up
Clean tools immediately after use with solvents (acetone, xylene, alcohol, etc.).
Storage
Store between 10°C (50°F) and 32°C (90°F).
Unopened product shelf life: 1 year.
Safety
Before using any products, review the appropriate Material Safety Data Sheet (MSDS) or Safety Sheet for your area. Follow standard confined space entry and work procedures, if appropriate.