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Rulon Bearings

SK Chemicals SKYPEL P128DF Thermoplastic Polyester Elastomer
Categories: Polymer; Thermoplastic; Elastomer, TPE; Polyester TPE

Material Notes: SKYPEL P128DF is a thermoplastic polyester elastomer resin superior heat resistance. SKYPEL P128DF with a medium 28D hardness based on shore D scale is widely used for injection molding and extrusion applications. And SKYPEL P128DF is also available to over mold TPU, PC, ABS, PC/ABS alloys.

Properties: Excellent mechanical properties such as high tensile strength and strain at break. High resistance to creep, impact, and flex-fatigue. Excellent flexibility at low temperature. Fast crystallization to reduce the cycle time of injection process. Processing: SKYPEL P128DF should be sufficiently dried prior to processing. For effective drying using dehumidifying dryer, it should be held for 2 to 3 hours at 100 ? or overnight at least 70 ?. Pre-dried SKYPEL P128DF in aluminum bag is also available.

Tensile property tests on ASTM Type IV dumbbells diecut from injection molded slab 2mm thick. Crosshead speed 50 mm/min.

Information provided by SK Chemicals

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Physical PropertiesMetricEnglishComments
Specific Gravity 1.14 g/cc1.14 g/ccASTM D792
Water Absorption 1.8 %
@Time 86400 sec
1.8 %
@Time 24.0 hour
ASTM D570
Linear Mold Shrinkage 0.013 cm/cm0.013 in/inASTM D955
Melt Flow 33 g/10 min
@Load 2.16 kg,
Temperature 230 °C
33 g/10 min
@Load 4.76 lb,
Temperature 446 °F
ASTM D1238
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore D 2828ASTM D2240
Tensile Strength at Break 13.7 MPa1990 psiASTM D638
Tensile Stress at Strain  0.785 MPa
@Strain 5.0 %
114 psi
@Strain 5.0 %
ASTM D638
 2.16 MPa
@Strain 10 %
313 psi
@Strain 10 %
ASTM D638
Elongation at Break 370 %370 %ASTM D638
Flexural Modulus 0.0294 GPa4.26 ksiCrosshead speed 1.3mm/min.; ASTM D790
Resilience 5555Vertical rebound.; ASTM D2632
Izod Impact, Notched (ISO) NBNBASTM D256
Tear Strength 70.0 kN/m
@Thickness 2.00 mm
399 pli
@Thickness 0.0787 in
Crosshead speed 51mm/min.; ASTM D1004
 
Electrical PropertiesMetricEnglishComments
Volume Resistivity 6.00e+14 ohm-cm6.00e+14 ohm-cmASTM D257
Surface Resistance 8.00e+13 ohm8.00e+13 ohmASTM D257
Dissipation Factor 0.028
@Frequency 1e+7 Hz
0.028
@Frequency 1e+7 Hz
ASTM D150
 
Thermal PropertiesMetricEnglishComments
Melting Point 196 °C385 °FDSC Peak; 10°C/min.; ASTM D3418
Deflection Temperature at 0.46 MPa (66 psi) 45.0 °C113 °FASTM D648
 
Processing PropertiesMetricEnglishComments
Rear Barrel Temperature 190 °C374 °FInjection
 195 °C383 °FExtrusion
Middle Barrel Temperature 200 °C392 °FInjection
 210 °C410 °FExtrusion
Front Barrel Temperature 200 °C392 °FInjection
 210 °C410 °FExtrusion
Nozzle Temperature 205 °C401 °FInjection
Die Temperature 210 °C410 °FExtrusion
Melt Temperature 215 °C419 °FExtrusion
Mold Temperature 30.0 °C86.0 °FInjection

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

PSK9922 / 291438

Aluminum Castings

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