Description
Ethylene Tetrafluoroethylene (ETFE) finds its application across various sectors owing to its unique characteristics. ETFE is a high-strength fluorine plastic exhibiting excellent heat resistance (a continuous use temperature range of -200 to 165 °C), outstanding electrical properties, weatherability, and chemical resistance.
Alfa Chemistry has harnessed these benefits to develop ETFE extruded films, which push the technological boundaries of industrial applications. Alfa Chemistry offers high performance ETFE extruded films in various grades including premium grade (PG) and mold release (MR).
Technical Information
Here is technical information about ETFE extruded films for reference:
| Grades | ETFE Film-PG | ETFE Film-MR | Test Method |
|---|
| Catalog | ACMA-ETFE-F001 | ACMA-ETFE-F002 |
|---|
| General Properties |
|---|
| Specific Gravity | 1.74 | ASTM D792 |
| Area Yield, ft2/lb/mil (m2/kg/25µm) | 110(22.6) | |
| Flammability | V-0 | UL-94 |
| Water Absorption, % | < 0.03 | |
| Mechanical Properties |
| Tensile Strength, psi | 7,000 | ASTM D882 |
| Elongation at Break, % | 300 | ASTM D882 |
| Tensile Modulus, psi | 140,000 | ASTM D882 |
| Initial Tear Strength (2 mil film), g | 500 | ASTM D1004 |
| Propagation Tear Strength (2 mil film), g | 75 | ASTM D1922 |
| Folding Endurance (MIT), cycles, ave. | >50,000 | ASTM D2176 |
| Thermal Properties |
| Continuous Use Temp, °F (°C) | 330 (165) | UL-746 B |
| Melt Point, °F (°C) | 500 (260) | ASTM D3418 |
| Coeff. of Lin. Thermal Expansion, in/(in °F) | 4x10-5 | ASTM D696 |
| Electrical Properties |
| Dielectric Strength (1mil film), volts / mil (kV/mm) | 500 (260) | | ASTM D149 |
| Dielectric Contant 1kHz | 2.6 | | ASTM D150 |
| Dissipation Factor, 1kHz | <0.0008 | | ASTM D150 |
| Product Specification |
| Width, inches (mm) | Up to 62" (1,575) | |
| Thickness, mils (µm) | 0.5 - 10 (12.5 - 250) | |
| Standard Colors | Clear | Clear Tinted | |
| Optical Properties |
| Refractive Index | 1.4 | | ASTM D542 |
| Solar Transmission, % | 90 | | ASTM E424 |
| Additional Options |
| Chemical Etching | √ | | |
| Plasma Treatment | √ | | |
Applications
- Medical Industry
ETFE films have found increasing usage in the medical industry due to their resistance to chemical sterilization and their compatibility with human tissue. For example, pharmaceutical containers like cap liners, stoppers, and plunger laminates frequently utilize ETFE films as their preferred material. Being a fluoropolymer film, they inherently have inert properties and do not pollute the substances contained inside the pharmaceutical vessel. These films do not contain plasticizers, processing aids, or other additives that can lead to contamination. - Solar Industry
ETFE films have been instrumental in the photovoltaic solar cell industry. They serve as encapsulation films due to their high-energy radiation absorption capacity, high transmittance to solar radiation, and excellent resistance to temperature variation; thereby increasing the efficiency of solar panels. - Architecture and Construction Industry
ETFE films are commonly used in architecture as an attractive and durable alternative to glass due to their cost-effective, lightweight nature, and exceptional durability. The material has found use in the structure of numerous sports stadia and entertainment venues due to its strength, sound transparency, and UV resistance, allowing natural light and sound into these spaces in an eco-friendly manner. - Aerospace and Automotive Industries
ETFE films find utility in aerospace and automotive manufacturing due to their lightweight nature, high-temperature resistance, and excellent electrical insulation properties. They can be found in automotive wiring, fuel hoses, and a multitude of other vehicle components.
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