Historically, veil used as corrosion barriers for Fiberglass Reinforced Plastic (FRP) equipment were made of glass or polyester (PET) fibers. These materials are acceptable in non-aggressive environments.
But in aggressive environments, the glass or PET material properties tend to degrade, forcing the FRP equipment to be relined or replaced.
Ethylene chlorotrifluoroethylene (ECTFE) veil, by contrast, has
demonstrated improved corrosion resistance and increased physical property retention for the corrosion barriers of FRP equipment. This
should result in extended life of the FRP corrosion barrier. Case studies and case histories comparing corrosion data between veil types in aggressive chemical environments show evidence that the ECTFE veil outperforms other veils. Additional advantages are illustrated in fire and smoke characteristics and resistance to abrasion.