ETFE powder coating is a melt-processable fluoropolymer coating material designed to provide metal components with chemical resistance, mechanical strength, impact resistance and durable surface protection.
After the powder is applied to a properly prepared substrate and melted under controlled heating conditions, it forms a continuous fluoropolymer coating layer. ETFE combines strong chemical resistance with better toughness and mechanical strength than many conventional fluoropolymer coating materials. It can be used for coating and lining through processes such as electrostatic powder coating and rotational lining.
ETFE coating powder is suitable for metal tanks, pipes, valves, fittings, pumps and industrial equipment exposed to corrosive chemicals, outdoor environments, mechanical impact or repeated handling.
Natural and colored grades can be supplied according to project requirements. The coating formulation, primer system, film thickness and processing conditions should be selected according to the substrate, equipment structure and operating environment.
ETFE is recognized for its toughness, chemical resistance, electrical properties, weatherability and resistance to ultraviolet exposure.
The following values are general product-page references. Final specifications must be confirmed according to the selected ETFE grade and approved technical data sheet.
| Parameter | Reference Specification |
|---|---|
| Polymer Type | ETFE |
| Full Name | Ethylene Tetrafluoroethylene Copolymer |
| Product Form | Fine Powder |
| Standard Color | Natural |
| Optional Colors | Custom Colors Available |
| Particle Size | Approximately 20–100 μm, subject to grade |
| Melting Range | Approximately 260–270°C, subject to grade |
| Recommended Film Thickness | Approximately 80–300 μm per coating system |
| Processing Temperature | Subject to Resin Grade and Equipment |
| Surface Finish | Smooth / Semi-Gloss / Textured |
| Coating Method | Electrostatic Spray / Rotational Lining |
| Substrate | Carbon Steel / Stainless Steel / Other Prepared Metals |
| Primer | Subject to Substrate and Coating System |
| Custom Formulation | Available Subject to Project Evaluation |
The values 20–100 μm particle size, 260–270°C melting range, 80–300 μm film thickness and 300–340°C processing temperature should not be presented as guaranteed universal specifications.
Different ETFE grades may have different melting points, flow behavior, adhesion systems and recommended processing conditions. Lower-melting ETFE grades are also available, so the final processing window must follow the approved material data and coating trial.
A complete ETFE coating system may include:
The substrate must be clean and properly prepared before coating. Surface contamination, insufficient blasting, unsuitable primer, excessive film thickness or incorrect heating may cause:
The actual coating process should be validated using the selected substrate, primer, powder grade and target film thickness.
ETFE powder is electrically charged and sprayed onto a prepared metal surface. The coated component is then heated so that the powder melts and forms a continuous film.
Suitable for:
Powder is placed inside a hollow metal component and distributed while the component is heated and rotated.
Suitable for:
ETFE powder is used commercially for electrostatic coating, rotational lining and the coating of pipes and other metal parts.
ETFE coatings can protect equipment exposed to acids, alkalis, solvents and corrosive process chemicals.
Typical components include:
ETFE provides good resistance to ultraviolet radiation and weather exposure, making it suitable for selected outdoor metal components and structural equipment.
The toughness and mechanical strength of ETFE make it suitable for parts exposed to handling, impact and mechanical wear.
ETFE offers useful electrical-insulation properties and may be used for selected coated components requiring both insulation and mechanical durability.
ETFE coating powder can be considered for selected chemical-contact, electrical and corrosion-protection components.
| Property | ETFE Coating | PTFE Coating | PFA Coating |
|---|---|---|---|
| Mechanical Strength | High | Lower | Medium |
| Toughness | High | Lower | Good |
| Impact Resistance | High | Moderate | Good |
| Chemical Resistance | Excellent | Extremely Broad | Extremely Broad |
| Non-Stick Performance | Good | Excellent | Excellent |
| Thick-Film Capability | Good | Depends on System | Excellent |
| Weatherability | Excellent | Good | Good |
| Typical Selection | Tough protective coating | Low friction and release | Thick corrosion-resistant lining |
ETFE is commonly selected when chemical resistance must be combined with stronger mechanical and impact performance.
Inspection can include:
The required test method and acceptance criteria should be agreed upon before production.
ETFE powder coating should be:
Standard packaging depends on the product grade and order quantity.
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