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DuPont Teflon® PTFE Grade 305A Aqueous Dispersion

 

Subcategory: Fluoropolymer; Thermoplastic; PTFE

Key Words: Polytetrafluoroethylene; DuPont Fluoroproducts

Material Notes:
Teflon® PTFE 305A 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 305A also contains approximately 8% (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 305A is used as a prime coat for high dielectric strength glass fabric. Teflon® PTFE 30B is then normally used for subsequent topcoats. When properly processed, the PTFE resin in Teflon® PTFE 305A 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.

Available Properties
  • Specific Gravity
  • Base Resin Density
  • Solids Content
  • Particle Size
  • pH
  • Viscosity
  • Melting Point
   
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