Teflon FEPD 121 Fluoropolymer Dispersion

Brand: Chemours
Product Code: 72500301

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Chemours (formerly DuPont) Teflon® FEPD 121 is an off-white aqueous fluorinated ethylene propylene (FEP) dispersion stabilized with a non-ionic surfactant.  It is a general-purpose dispersion that can be used to impart some the unique properties of FEP to end products that would be difficult to make using traditional melt extrusion processes.  It can be used to coat or impregnate porous structures or to make thin films.  It can be coated and melt bonded to polytetrafluoroethylene (PTFE) resin or used as a hot melt adhesive.

The FEP resin in FEPD 121 is a melt flowable thermoplastic, providing superior properties typical of fluoropolymer resins: retention of properties after service at 204°C (400°F) and useful properties at –240°C (–400°F).

FEPD 121 aqueous dispersion provides:

• Inertness to nearly all industrial chemicals and solvents
• Stability at high temperatures
• Excellent dielectric properties
• Excellent weatherability

Typical Applications Include:

• Heat-sealable top coatings for PTFE-coated fabrics for belting, circuit boards, architectural fabrics and electrical insulation
• Cast film for capacitor dielectrics or chemical barriers
• Holt melt adhesive for PTFE, PFA and FEP parts
• Metal coatings

Teflon Dispersion FEPD 121 Property Sheet

Teflon Dispersion FEPD 121 MSDS

Teflon Properties
Solids Content (% FEP by weight) 55%
% Surfactant based on FEP solids 5.5%
Density of Dispersion (at 55% solids) 1.41 g/cm³
Dispersion Particle Size, average diameter 0.18 um (microns)
pH of Dispersion 10
Brookfield Viscosity (at 25°C) 25 mPa·s
Melting Temperature 260°C (500°F)
Melt Flow Rate (MFR 372/5.0) 8 g/10 min

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