ExxonMobil Santoprene® 121-87 Thermoplastic Elastomer

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ExxonMobil Santoprene® 121-87 Thermoplastic Elastomer
Categories:	Polymer; Thermoplastic; Elastomer, TPE; Thermoplastic Vulcanizate Elastomer (TPV)
Material Notes:	A hard, black, UV resistant thermoplastic vulcanizate (TPV) in the thermoplastic elastomer (TPE) family. This material combines good physical properties and chemical resistance for use in a wide range of applications. This grade of Santoprene TPV is shear-dependent and can be processed on conventional thermoplastics equipment for injection molding, extrusion or blow molding. It is polyolefin based and completely recyclable. Key Features: Recommended for applications requiring excellent flex fatigue resistance. Excellent ozone resistance. Designed for improved UV resistance. Although not NSF certified, this product has a Material Supplier Form on file with NSF to facilitate its evaluation for use in applications requiring NSF certification. EU and China RoHS compliant. Applications: Automotive- Interior Mat, Seals, Gaskets and Weather Seals Uses: Automotive Applications Automotive Interior Trim Automotive Exterior Trim Automotive Under the Hood Availability: Africa & Middle East, Europe, North America, Asia Pacific, Latin America and South America Information provided by ExxonMobil Chemical
Key Words:	EU 2003/11/EC; RoHS Compliant
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Physical Properties	Original Value	Comments

Specific Gravity	0.970 g/cc	ASTM D792

Mechanical Properties	Original Value	Comments
Hardness, Shore A	93	2 mm, 15 sec; ISO 868
	94	Air at 275°F, 1008 hr; ASTM D573
Tensile Strength at Break	2134 psi	Air at 275°F, 1008 hr; ASTM D573
	2200 psi	Across Flow; ASTM D412
Tensile Stress at Strain	986 psi @Strain 100 %	Across Flow; ASTM D412
Elongation at Break	490.2 %	Air at 275°F, 1008 hr; ASTM D573
	570 %	Across Flow; ASTM D412
Tear Strength	286 pli	73°F, Die C; ASTM D624
Compression Set	28 % @Temperature 22.8 °C, Time 79200 sec	ASTM D395
	65 % @Temperature 125 °C, Time 252000 sec	ASTM D395

Electrical Properties	Original Value	Comments
Dielectric Constant	2.7	1.98 mm; ASTM D150
Dielectric Strength	670 V/mil	2.03 mm; ASTM D149

Thermal Properties	Original Value	Comments
Maximum Service Temperature, Air	275 °F
Brittleness Temperature	-72.0 °F	ASTM D746

Processing Properties	Original Value	Comments
Processing Temperature	175 - 230 °C
Rear Barrel Temperature	360 °F
Middle Barrel Temperature	370 °F
Front Barrel Temperature	380 °F
Nozzle Temperature	390 - 455 °F
Die Temperature	410 °F	Extrusion
Melt Temperature	400 °F	Extrusion
	400 - 450 °F	Processing
Mold Temperature	50.0 - 125 °F	Processing
Drying Temperature	180 °F
Dry Time	3 hour
Moisture Content	0.080 %
Back Pressure	50.0 - 100 psi	Processing
	725 - 2900 psi	Extrusion
Clamp Pressure	6000 - 10000 psi
Vent Depth	0.00100 in
Cushion	0.125 - 0.250 in
Screw Speed	100 - 200 rpm

Descriptive Properties
Color	Black
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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