DuPont Teflon® PTFE Grade 30 Aqueous Dispersion

Subcategory: Fluoropolymer; Thermoplastic; PTFE

Key Words: Polytetrafluoroethylene; DuPont Fluoroproducts

Material Notes:
Teflon® PTFE 30 fluoropolymer resin is a negatively charged, hydrophobic colloid containing approximately 60% (by total weight) of 0.05 to 0.5 mm polytetrafluoroethylene (PTFE) resin particles suspended in water. A milky white liquid, Teflon® PTFE 30 also contains approximately 6% (by weight of PTFE) of a nonionic wetting agent and stabilizer. Viscosity at room temperature is approximately 20 cP. Nominal pH is 10.

Compared with other grades of PTFE dispersions,Teflon® PTFE 30 is a general-purpose product, often preferred for impregnating woven goods and for some coating processes. It imparts some of the unique properties of PTFE resin to porous structures.

When properly processed, the PTFE resin in Teflon® PTFE 30 exhibits the superior properties typical of the fluoropolymer resins: retention of properties after service at 260°C (500°F), useful properties at –240°C (–400°F), chemical inertness to nearly all industrial chemicals and solvents, and low friction and antistick surfaces. Dielectric properties are outstanding and stable with frequency and temperature.

Applications

Teflon® PTFE 30 is used to impregnate packings made from braided fibers for severe chemical and thermal service; to coat glass fabric for industrial conveyor belting, nonadhesive separator sheets for laminating and press blankets, and gaskets; and as surface coatings for other substrates.