Chemours Teflon™ NXT 70 Modified Granular PTFE Resin

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Chemours Teflon™ NXT 70 Modified Granular PTFE Resin
Categories:	Polymer; Thermoplastic; Fluoropolymer; Polytetrafluoroethylene (PTFE); Polytetrafluoroethylene (PTFE), Molded
Material Notes:	Teflon™ PTFE NXT 70 is a chemically modified PTFE polymer. When properly processed, it offers an excellent combination of properties that are characteristic of Teflon™ fluoroplastic resins. In addition, this resin offers weld ability, improved resistance to deformation under load, increased resistance to permeation of chemicals, and a higher dielectric breakdown voltage. It exhibits minimal sagging in billets as large as 350 kg (800 lb.). Teflon™ NXT 70 is a fine-cut resin designed for compression molding of blocks and sheets. It can be used for: Seal rings, Valve seats, Bearing pads, Linings, Encapsulations, Base resin for filled compounds. Information provided by Chemours.
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Physical Properties	Original Value	Comments

Specific Gravity	2.17 g/cc	ASTM D4894
Bulk Density	0.400 g/cc	ASTM D4894
Water Absorption	<= 0.010 % @Time 86400 sec	ASTM D570
Particle Size	33 µm	Average; ASTM D4894
Deformation	4.0 % @Pressure 14.0 MPa, Temperature 23.0 °C	24 hours; ASTM D621 Method A

Mechanical Properties	Original Value	Comments
Hardness, Shore D	50 - 65	ASTM D2240
Tensile Strength	38.6 MPa	ASTM D4894
Elongation at Break	550 %	ASTM D4894
Flexural Modulus	0.496 GPa	ASTM D790
Flex Crack Resistance	>= 1.00e+6	Cycles MIT Folding Endurance; ASTM D2176
Izod Impact, Notched	3.50 ft-lb/in	ASTM D256
Coefficient of Friction	0.050 - 0.10	ASTM D1894

Electrical Properties	Original Value	Comments
Volume Resistivity	>= 1.00e+18 ohm-cm	ASTM D257
Surface Resistivity per Square	>= 1.00e+18 ohm	ASTM D257
Dielectric Constant	2.1 @Frequency 1e+6 Hz	ASTM D150
Dielectric Strength	18.0 kV/mm @Thickness 0.100 mm	ASTM D149
Dissipation Factor	<= 0.00010 @Frequency 1e+6 Hz	ASTM D150
Arc Resistance	>= 300 sec	ASTM D495

Thermal Properties	Original Value	Comments
Melting Point	327 °C	ASTM D3418
Flammability, UL94	V-0
Oxygen Index	>= 95 %	ASTM D2863

Descriptive Properties
Chemical/Solvent Resistance	Excellent	ASTM D543
Detergent Resistance (hours)	24	On grit blast aluminum
	264
	624	On aluminum
Heat of Combustion	5.1 MJ/kg	ASTM D240
Salt Spray Resistance Coatings (hours)	192	ASTM B117. 5% NaCl at 35 °C (95 °F). On aluminum.
	744+	ASTM B117. 5% NaCl at 35 °C (95 °F).
Weather Resistance (years unaffected)	20	Florida Exposure

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PDU8835 / 268762

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