PFA Film | Transparent, Heat-Resistant & Chemical-Resistant Fluoropolymer Film for Semiconductor, Electrical Insulation, Chemical Lining, and High-Purity Industrial Applications

Product Overview

PFA film is extruded from perfluoroalkoxy (PFA) resin with a smooth surface and excellent comprehensive properties. It supports various processing methods such as heat sealing, welding, metallization, lamination, and vacuum forming.

Key Properties

Chemical Resistance

• Excellent resistance to most strong acids, alkalis, and common solvents (e.g., DMF, DMSO)
• Withstands concentrated sulfuric acid and nitric acid
• Not resistant to molten alkali metals, fluorine, and certain halogen compounds under specific conditions
• Good barrier properties to gases and liquids

Thermal Properties

• Continuous service temperature: -240℃ to +260℃
• Melting point: 305℃
• Thermal shrinkage (200℃ × 10min): -0.7 ~ -0.6%
• Thermal conductivity: 0.2 W/m·K
• Flammability: UL 94 VTM-0
• Oxygen index: 95 Vol%

Electrical Properties

• High dielectric strength: 250 kV/mm (0.025 mm film), 70 kV/mm (5 mm film)
• Low dielectric constant: 2.02 (1 MHz), 2.01 (1000 MHz)
• Low dielectric loss: 0.0003 (1 MHz), 0.0005 (1000 MHz)
• Volume resistivity: >1.0 × 10¹⁷ ohm·cm
• Surface resistivity: >1.0 × 10¹⁶ ohm/sq

Mechanical Properties

• Tensile strength: 25 MPa
• Elongation at break: 300%
• MIT folding endurance: 100,000 cycles
• Excellent non-stick and low friction performance
• High impact and tear resistance
• Maintains mechanical properties even at cryogenic temperatures

Weatherability

• Stable under long-term outdoor exposure
• Excellent transmittance for visible and UV light