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ExxonMobil Santoprene® 271-55 Thermoplastic Elastomer

Category Polymer , Thermoplastic , Elastomer, TPE , Thermoplastic Vulcanizate Elastomer (TPV)
Manufacturer Exxon Chemical
Trade Name Santoprene®
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF ExxonMobil Santoprene® 271-55 Thermoplastic Elastomer.pdf
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Material Notes:
A soft, colorable, specialty thermoplastic vulcanizate (TPV) in the thermoplastic elastomer (TPE) family. It complies with FDA regulations for rubber articles intended for repeated use, as well as those in contact with non-fatty, non-oily foods as closures and sealing gaskets. This grade of Santoprene TPV is shear-dependent and can be processed on conventional thermoplastics equipment for injection molding or extrusion. It is polyolefin based and completely recyclable.Key Features: This product, in principle, can be used in food contact applications in the USA (FDA). Migration or use limitations may apply.Complies with NSF Standard 51: Food Equipment Materials - Plastics, materials and components used in food equipment.UL listed: file #QMFZ2.E80017, Plastics - Component; file #QMFZ8.E80017, Plastics Certified For Canada - Component.Recommended for applications requiring excellent flex fatigue resistance.EU and China RoHS compliant.Applications: Consumer – FDA Seals and Closures, Packaging, Small Appliance and Soft Touch GripsSeals and GasketsUses: FiltersFlexible GripsFood ContainersGasketsKitchenwareLiving HingesNon-specific Food ApplicationsSealsTubingWhite Goods & Small Appliances Availability: Africa & Middle East, Europe, North America, Asia Pacific, Latin America and South AmericaInformation provided by ExxonMobil Chemical
Physical Properties Metric English Comments
Specific Gravity 0.970 g/cc
0.970 g/cc
23°C; ASTM D792
Mechanical Properties Metric English Comments
Hardness, Shore A 59
59
2 mm, 15 sec; ISO 868
62
62
Air at 302°F, 168 hr; ASTM D573
Tensile Strength at Break 4.835 MPa
701.2 psi
Air at 302°F, 168 hr; ASTM D573
5.20 MPa
754 psi
Across Flow; ASTM D412
Tensile Stress 2.10 MPa

@Strain 100 %
305 psi

@Strain 100 %
Across Flow; ASTM D412
Elongation at Break 390 %
390 %
Across Flow; ASTM D412
440.7 %
440.7 %
Air at 302°F, 168 hr; ASTM D573
Tear Strength 16.0 kN/m
91.4 pli
73°F, Die C; ASTM D624
Compression Set 22 %
22 %
158°F, 22 hr; ASTM D395
38 %
38 %
257°F, 70 hr; ASTM D395
Thermal Properties Metric English Comments
Brittleness Temperature -60.0 °C
-76.0 °F
ASTM D746
Processing Properties Metric English Comments
Processing Temperature 175 - 230 °C
347 - 446 °F
Rear Barrel Temperature 177 °C
350 °F
Middle Barrel Temperature 182 °C
360 °F
Front Barrel Temperature 182 °C
360 °F
Nozzle Temperature 188 - 221 °C
370 - 430 °F
Die Temperature 199 °C
390 °F
Extrusion
Melt Temperature 196 °C
385 °F
Extrusion
193 - 232 °C
380 - 450 °F
Mold Temperature 10.0 - 51.7 °C
50.0 - 125 °F
Processing
Drying Temperature 82.2 °C
180 °F
Dry Time 3 hour
3 hour
Moisture Content 0.080 %
0.080 %
Back Pressure 0.345 - 0.689 MPa
50.0 - 100 psi
Processing
5.00 - 20.0 MPa
725 - 2900 psi
Extrusion
Clamp Pressure 41.4 - 68.9 MPa
6000 - 10000 psi
Vent Depth 0.00254 cm
0.00100 in
Cushion 0.317 - 0.635 cm
0.125 - 0.250 in
Screw Speed 100 - 200 rpm
100 - 200 rpm
Descriptive Properties Value Comments
Color Natural Color
Form Pellets
Injection Rate Fast
Maximum Regrind % 20
Screw Compression Ratio 2:1 - 2.5:1
Screw L/D Ratio 16:1 - 20:1
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