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Master Bond adhesives
Chemours Teflon® PTFE 640 Resin for Lubricated Paste Extrusion  (discontinued **)
Categories: Polymer; Thermoplastic; Fluoropolymer; Polytetrafluoroethylene (PTFE); Polytetrafluoroethylene (PTFE), Extruded

Material Notes: Available in white powder, often called "fine powder," this fluoropolymer resin is capable of being sheared by lubricated paste extrusion (facilitated by a hydrocarbon liquid) into a coherent fibrous matrix with useful structural integrity. Teflon® PTFE fine powders provide a practical method for producing long lengths of product from a resin that cannot be melt extruded. Resin Characteristics: High reduction ratio; low pressure resin. Uses: Wire and cable coating; spaghetti tubing.

Typical properties for Teflon® PTFE Fine Powder:

Chemours was formed from former DuPont performance chemicals businesses, including DuPont Fluoroproducts, in 2015.

Key Words: Polytetrafluoroethylene
Vendors:
Available Properties
  • Specific Gravity, ASTM D4895
  • Bulk Density, ASTM D4895
  • Water Absorption, ASTM D570, 24 hours
  • Particle Size, ASTM D4895
  • Hardness, Rockwell R, ASTM D785
  • Hardness, Shore A, ASTM D2240
  • Hardness, Shore D, ASTM D2240
  • Tensile Strength, Ultimate, ASTM D1457, 1708, 638
  • Elongation at Break, ASTM D 1457, 1708, 638
  • Flexural Modulus, ASTM D790
  • Poissons Ratio, approaches a limit of 0.50 at higher temperature
  • Izod Impact, Notched, ASTM D256
  • Coefficient of Friction, ASTM D 1894
  • Coefficient of Friction, Dynamic, V = 10 fpm; P= 800 - 1000 psi
  • Coefficient of Friction, Dynamic, V = 100 fpm; P= 80 - 100 psi
  • Coefficient of Friction, Static, 500 psi
  • K (wear) Factor, unlubricated vs. soft carbon steel
  • Limiting Pressure Velocity, at 10 fpm
  • Limiting Pressure Velocity, at 100 fpm
  • Limiting Pressure Velocity, at 1000 fpm
  • Taber Abrasion, mg/1000 Cycles, 1000 cycles; CS-17F wheel
  • Volume Resistivity, ASTM D257
  • Surface Resistivity per Square, ASTM D257
  • Dielectric Constant, ASTM D150
  • Dielectric Strength, ASTM D149, 100 micrometers film
  • Dissipation Factor, ASTM D150
  • Arc Resistance, ASTM D495
  • CTE, linear
  • CTE, linear
  • CTE, linear
  • CTE, linear, Large volume change in the 18-25°C transition range
  • Specific Heat Capacity
  • Specific Heat Capacity
  • Specific Heat Capacity
  • Specific Heat Capacity
  • Thermal Conductivity
  • Melting Point, ASTM D1458
  • Maximum Service Temperature, Air, retains useful mechanical properties
  • Minimum Service Temperature, Air, retains useful mechanical properties
  • Minimum Service Temperature, Air, remains highly flexible
  • Flammability, UL94
  • Oxygen Index, ASTM D2863
  • Processing Temperature, Cure Temperature
  
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Manufacturer Notes:
Chemours, former DuPont

Category Notes
Plastic

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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