A Fluoropolymer with Optical Clarity and Gas Permeability
Teflon™ AF (amorphous fluoropolymer) resins have the same excellent optical clarity and mechanical properties of amorphous polymers. These resins also perform well over a wide range of temperatures and maintain outstanding electrical properties and chemical resistance. A unique chemical structure enhances their versatility and distinguishes this class from other fluoropolymers.
Features and Benefits
As high-performance fluoropolymer resins, Teflon™ AF resins offer chemical resistance and high thermal resistance. The special molecular structure of these amorphous fluoropolymer resins offer additional benefits, which include:
- Optical clarity
- Low refractive index
- Exceptional UV stability and transmission capability
- Dimensional stability
- Reduced mold shrinkage
- Low dielectric constant (1.89 to 1.93), even at gigahertz frequencies
- Low dissipation factor and moisture sensitivity/moisture absorption
- High compressibility and gas permeability
- Solubility in perfluorinated solvents
Teflon™ AF Grades
Teflon™ AF is available as a powdered resin or solution in two grades: AF 1600X (*Tg 160 °C [320 °F]) and AF 2400X-J (Tg 240 °C [464 °F]).
AF 2400 1%
AF 1601 6%
AF 1601 18%
For more information, see the Teflon™ AF Resins Performance and Processing pages.
*Tg is the glass transition temperature
Teflon™ AF resins can be used in unlimited applications to meet current and future material challenges.
Teflon™ AF products offer plenty of flexibility. They function as a clear coating for optical devices requiring a low refractive index. They also perform well in aggressive chemical environments with disparate temperatures and light waves (UV-IR).
Applications in this category include lens covers for microwave, radar, and optical devices; fiber optics, optical cladding; optoelectronic devices; UV cells and windows; passivation and protective coatings; and anti-reflective coatings for optical devices.
The optical clarity and gas permeability of films made with Teflon™ AF products enable efficient 3D printing and manufacturing.
Semiconductors and Processing Materials
Thanks to good dimensional stability, rigidity at high-use temperatures, and chemical inertness, Teflon™ AF products provide critical electrical properties for the next generation of computer chips.
Teflon™ AF products are easy to mold and spin cast. Other uses include passivation layers and encapsulation for hybrid/sandwich integrated circuit packaging.
Teflon™ AF solutions can be coated onto other substrates to enhance biocompatibility for optical sensing and diagnostic applications. They can also be used as a potential separation media for gases and liquids.