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Master Bond adhesives

Chemours Teflon® PTFE 850A Granular Molding Powder  (discontinued **)
Categories: Polymer; Thermoplastic; Fluoropolymer; Polytetrafluoroethylene (PTFE)

Material Notes: Teflon® PTFE white granular molding powders are ideal for molding many different end products and stock shapes. Excellent chemical resistance, electrical properties, high temperature performance, low temperature toughness, plus unique adhesion and flame resistance.

Teflon® PTFE granular molding powders are processed by compressing them into a desired shape and heating them at temperatures above their melting point to consolidate the powder.

Resin Characteristics: Improved free-flow pellets with high bulk density. Excellent handling resin. Uses: Automatic molding of small-to-medium-sized parts; lined pipes, valves, and fittings via isostatic molding; compression molding of sheets.

Typical properties for Teflon® PTFE Granular Resin:

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

Key Words: Polytetrafluoroethylene
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Specific Gravity 2.16 g/cc2.16 g/ccASTM D4894
Bulk Density 0.900 g/cc0.0325 lb/in³ASTM D4894
Water Absorption <= 0.010 %<= 0.010 %24 hours; ASTM D570
Particle Size 400 µm400 µmASTM D4894
Linear Mold Shrinkage 0.027 cm/cm0.027 in/inat preform pressure of 35 Mpa; ASTM D4894
 
Mechanical PropertiesMetricEnglishComments
Hardness, Rockwell R 5858ASTM D785
Hardness, Shore A 9898ASTM D2240
Hardness, Shore D 50 - 6550 - 65ASTM D2240
Tensile Strength, Ultimate 28.0 MPa4060 psiASTM D4894
Elongation at Break 300 %300 %ASTM D4894
Flexural Modulus 0.496 GPa71.9 ksiASTM D790
Poissons Ratio 0.460.46approaches a limit of 0.50 at higher temperature
Izod Impact, Notched 1.89 J/cm3.54 ft-lb/inASTM D256
Coefficient of Friction 0.050 - 0.100.050 - 0.10ASTM D 1894
Coefficient of Friction, Dynamic 0.100.10V = 10 fpm; P= 800 - 1000 psi
 0.130.13V = 100 fpm; P= 80 - 100 psi
Coefficient of Friction, Static 0.050 - 0.0800.050 - 0.080500 psi
K (wear) Factor 5040 x 10-8 mm³/N-M2500 x 10-10 in³-min/ft-lb-hrunlubricated vs. soft carbon steel
Limiting Pressure Velocity  0.0420 MPa-m/sec
@Temperature 21.0 - 27.0 °C
1200 psi-ft/min
@Temperature 69.8 - 80.6 °F
at 10 fpm
 0.0631 MPa-m/sec
@Temperature 21.0 - 27.0 °C
1800 psi-ft/min
@Temperature 69.8 - 80.6 °F
at 100 fpm
 0.0876 MPa-m/sec
@Temperature 21.0 - 27.0 °C
2500 psi-ft/min
@Temperature 69.8 - 80.6 °F
at 1000 fpm
Taber Abrasion, mg/1000 Cycles 8.98.91000 cycles; CS-17F wheel
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity >= 1.00e+18 ohm-cm>= 1.00e+18 ohm-cmASTM D257
Surface Resistivity per Square >= 1.00e+18 ohm>= 1.00e+18 ohmASTM D257
Dielectric Constant 2.1
@Frequency 1e+6 Hz
2.1
@Frequency 1e+6 Hz
ASTM D150
Dielectric Strength 18.0 kV/mm457 kV/in100 micrometers film; ASTM D149
Dissipation Factor <= 0.00010
@Frequency 1e+6 Hz
<= 0.00010
@Frequency 1e+6 Hz
ASTM D150
Arc Resistance >= 300 sec>= 300 secASTM D495
 
Thermal PropertiesMetricEnglishComments
CTE, linear  112 µm/m-°C
@Temperature -100 - 25.0 °C
62.2 µin/in-°F
@Temperature -148 - 77.0 °F
 124 µm/m-°C
@Temperature 25.0 - 100 °C
68.9 µin/in-°F
@Temperature 77.0 - 212 °F
 220 µm/m-°C
@Temperature 25.0 - 300 °C
122 µin/in-°F
@Temperature 77.0 - 572 °F
 790 µm/m-°C
@Temperature 20.0 - 25.0 °C
439 µin/in-°F
@Temperature 68.0 - 77.0 °F
Large volume change in the 18-25°C transition range
Specific Heat Capacity  1.20 J/g-°C
@Temperature 40.0 °C
0.287 BTU/lb-°F
@Temperature 104 °F
 1.30 J/g-°C
@Temperature 150 °C
0.311 BTU/lb-°F
@Temperature 302 °F
 1.40 J/g-°C
@Temperature 20.0 °C
0.335 BTU/lb-°F
@Temperature 68.0 °F
 1.50 J/g-°C
@Temperature 260 °C
0.359 BTU/lb-°F
@Temperature 500 °F
Thermal Conductivity 0.250 W/m-K1.74 BTU-in/hr-ft²-°F
 0.300 W/m-K
@Temperature 20.0 - 260 °C
2.08 BTU-in/hr-ft²-°F
@Temperature 68.0 - 500 °F
Melting Point 317 - 337 °C603 - 639 °FASTM D4894
Maximum Service Temperature, Air 260 °C500 °Fretains useful mechanical properties
Minimum Service Temperature, Air -268 °C-450 °Fretains useful mechanical properties
 -79.0 °C-110 °Fremains highly flexible
Flammability, UL94 V-0V-0
Oxygen Index >= 95 %>= 95 %ASTM D2863
 
Processing PropertiesMetricEnglishComments
Processing Temperature 379 - 429 °C714 - 804 °FCure Temperature
 
Descriptive Properties
20% Hydrochloric Acid Transmission, g/100sq in.<0.01
50% Sodium Hydroxide Transmission, g/100sq in.<.01
Acetic Acid Transmission, g/100sq in.0.41
Acetone Transmission, g/100sq in.0.95
Acetophenone Transmission, g/100sq in.0.5
Benzene Transmission, g/100sq in.0.64
Carbon Tetrachloride Transmission, g/100sq in.0.31
Chemical/Solvent ResistanceExcellent
Detergent Resist. on grit-blasted aluminum, Hours624
Detergent Resistance on aluminum, Hours264
Detergent Resistance on grit-blasted steel, Hours24
Ethyl Acetate Transmission, g/100sq in.0.76
Folding Endurance, # cycles, .18-.20 mm>10^6
Heat of Combustion J/g5100ASTM D240
Hexane Transmission, g/100sq in.0.56
Piperidine Transmission, g/100sq in.0.04
powder flow ASTM D1855 (modified), g/min450
Red Fuming Nitric Acid Transmission, g/100sq in.7.5-1.4
Salt Spray Resistance on aluminum, Hours>744
Salt Spray Resistance on steel, Hours192
Sulfuric Acid Transmission, g/100sq in.0.00001
Water Transmission, g/100sq in.0.4
Weather Resistance20Years unaffected in Florida Exposure

**
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PDU905 / 33303

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