Fluoropolymer ETFE powder coating ?
Fluoropolymer ETFE (Ethylene Tetrafluoroethylene Copolymer) powder coating is a high-performance fluoropolymer coating, renowned for balancing fluoromaterial advantages with flexible processability.
Core Performance Advantages
- Excellent weather & corrosion resistance: The fluorine-containing molecular structure delivers strong UV resistance, maintaining stability without fading or chalking in long-term outdoor use. It also withstands erosion from strong acids, alkalis, and organic solvents.
- Superior processability: With a lower melting point than PTFE and PVDF, it offers good thermal stability and flowability during powder spraying, easily forming a uniform, smooth coating on complex-shaped workpieces.
- Balanced mechanical properties: Possesses decent tensile strength, flexibility, impact resistance, and wear resistance, preventing coating cracking or peeling for long service life.
- Environmental safety: Solvent-free in powder form, it meets environmental standards. The non-toxic, odorless coating is suitable for food-contact scenarios (with relevant certifications).
Typical Application Fields
- Chemical industry: Inner linings for corrosion-resistant pipes, reactor walls, and agitator blades, avoiding material adhesion and extending equipment life.
- Food processing: Baking molds, food conveyor belts, and processing equipment parts, leveraging non-stick properties and complying with FDA food-contact requirements.
- Electronics & semiconductors: High-temperature process components and circuit board baking trays, ensuring stability in high-temperature environments without contaminating products.
- New energy: Frames for solar panels and fasteners for wind turbine blades, resisting outdoor harsh weather and reducing maintenance frequency.
- Aerospace & medical devices: Seals, fuel system components, and surgical instrument surfaces, withstanding extreme conditions and resisting disinfectant corrosion.
ETFE Powder Coating TDS
| Parameter Category | Specific Item | Typical Value | Notes |
|---|---|---|---|
| Basic Properties | Chemical Composition | Ethylene-Tetrafluoroethylene Copolymer | 100% solid powder, no solvents |
| Powder Form | Free-flowing white/gray powder | Particle size distribution customizable | |
| Particle Size (D50) | 20–45 μm | Adjusted for spray application | |
| Thermal Performance | Continuous Service Temperature | -60°C to 150°C | Short-term peak up to 180°C |
| Melting Point | 260–270°C | Differential Scanning Calorimetry (DSC) | |
| Thermal Stability | No decomposition below 300°C | Under air atmosphere | |
| Mechanical Properties | Tensile Strength (Coating) | ≥20 MPa | ASTM D638 standard |
| Elongation at Break | ≥300% | Measured on cured film (50–70 μm) | |
| Hardness (Shore D) | 55–65 | ASTM D2240 standard | |
| Adhesion (Cross-Cut Test) | Grade 0–1 | ASTM D3359, on steel/aluminum substrates | |
| Impact Resistance | ≥50 cm·kg | No cracking/peeling after impact | |
| Chemical Resistance | Strong Acids (10% H₂SO₄) | No blistering/weight loss | 1000 hours immersion at 25°C |
| Strong Alkalis (10% NaOH) | No blistering/weight loss | 1000 hours immersion at 25°C | |
| Organic Solvents (Acetone) | No swelling/disintegration | 72 hours immersion at 25°C | |
| Surface Properties | Non-Stick Performance | Static Coefficient of Friction ≤0.15 | Against steel, ASTM D1894 |
| Water Contact Angle | ≥105° | Indicates hydrophobicity | |
| Environmental & Safety | FDA Compliance | Meets FDA 21 CFR Part 175.300 | For food-contact applications |
| VOC Content | 0 g/L | Solvent-free, eco-friendly | |
| Application Parameters | Curing Temperature | 200–230°C | Curing time: 15–20 minutes |
| Film Thickness (Dry) | 50–120 μm | Optimal range for performance | |
| Application Method | Electrostatic powder spraying | Compatib |
