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Description:
ECPC utilizes the principle of electrophoresis to evenly deposit charged paint particles onto the metal surface in an electric field, and after high-temperature (200℃) baking, a thin and dense coating is formed. Then, powder paint is sprayed onto the metal surface again through electrostatic adsorption, and after high-temperature (200℃) baking and curing, a relatively thick organic coating is formed.
Features:
The interior is coated with electrophoretic paint, and the surface is coated with an organic coating made of a mixture of epoxy resin and polyester resin.
Processing flow:
Steel Plate–Laser Cutting–Surface Treatment / Shot Blasting–Arc Forming–Alkaline Washing–Electro-coating—High-temperature baking (200℃)–Epoxy polyester spraying–High-temperature baking (200℃)–Final inspection of finished product
Advantages:
- Lower cost, not easy to bumps, and no area damage will occur after bumps, and it is easy to repair.
- The coating has strong bonding force with the steel plate.
- Fast production speed, short customization time and delivery time.
- Uniform color, low sintering temperature, not restricted by the thickness of the steel plate.
- Can be disassembled or relocated twice or three times.
- Wide choice of colour versions
Technical Parameter
| Specifications | Index |
| Appearance | Flat, smooth, without any pinholes |
| Coating thickness | ≥100μm |
| elasticity | 1mm |
| impact strength | 490N.cm |
| Glossiness(60°)% | 40-70% |
| Pencil hardness | 2H |
| Adhesion (grid method) | 0 Grade |
| Adhesion (circular method) | 1 Grade |
| Erichsen Cupping Value | ≥5 |
| Acid Alkali Resistance 24hr 0.1N H₂SO₄-0.1N NaOH |
No Change |
| Heat and Humidity Resistance | ≥1000Hr |
| Salt Spray Resistance(ASTM) | ≥800Hr |
Physicochemical Property:
1. Salt Spray Resistance Performance – Testing the Anti-rust Index
| Anticorrosive coating | Salt Spray Resistance(ASTM) Time(Hr) | Results |
| Stainless Steel 304 | 120 | Rust spots appear |
| ECPC Coating | 3000 | No Change |
| Enamel Coating | 362 | Rust spots appear |
| Epoxy resin Coating | 106 | Rust spots appear |
| Water-soluble acrylic steel Primer coating | 72 | Rust spots appear |
2. Impact Resistance Index – Coating Adhesion Performance
| Anticorrosive coating | Impact strength | Results |
| Stainless Steel 304 | 50 | Not fall off. |
| ECPC Coating | 50 | Not fall off. |
| Enamel Coating | 20 | All fall off. |
| Epoxy resin Coating | 30 | Partial fall off. |
| Water-soluble acrylic steel Primer coating | 50 | Not fall off. |
3. Alkali corrosion resistance – The alkali corrosion resistance of the coating
| Anticorrosive coating | 0.1N Sodium Hydroxide Solution | Results |
| Stainless Steel 304 | 24h | Slight color change and corrosion appears. |
| ECPC Coating | 24h | No color change and no corrosion. |
| Enamel Coating | 24h | The color has slightly lightened and corrosion appears. |
| Epoxy resin Coating | 24h | The color has slightly lightened and corrosion appears. |
| Water-soluble acrylic steel Primer coating | 24h | The color has slightly lightened and corrosion appears. |
4. Acid resistance – The acid resistance of the coating.
| Anticorrosive coating | Sulfuric Acid | Results |
| Stainless Steel 304 | 24h | Rust spots appear. |
| ECPC Coating | 24h | No crack and no rust spots. |
| Enamel Coating | 24h | Crack appears and rust spots appear. |
| Epoxy resin Coating | 24h | Rust spots appear. |
| Water-soluble acrylic steel Primer coating | 24h | Rust spots appear. |