ExxonMobil Santoprene® 8221-70 Thermoplastic Elastomer

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ExxonMobil Santoprene® 8221-70 Thermoplastic Elastomer
Categories:	Polymer; Thermoplastic; Elastomer, TPE; Thermoplastic Vulcanizate Elastomer (TPV)
Material Notes:	A soft, colorable, 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 or blow molding. It is polyolefin based and completely recyclable. Key Features: UL listed: file #QMFZ2.E80017, Plastics - Component; file #QMFZ8.E80017, Plastics Certified For Canada - Component. Neutral, easy coloring formulation. Used in sealing applications. EU and China RoHS compliant. Applications: Industrial – Architecture and Construction Uses: Construction Applications Expansion Joint Glazing Outdoor Applications Processing Method: Blow Molding, Extrusion Blow Molding, Injection Blow Molding, Injection Molding and Multi Injection Molding 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; UL QMFZ2; UL QMFZ8
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Physical Properties	Original Value	Comments

Specific Gravity	0.950 g/cc	ASTM D792

Mechanical Properties	Original Value	Comments
Hardness, Shore A	75	2 mm, 15 sec; ISO 868
Tensile Strength at Break	986 psi	Across Flow; ASTM D412
Tensile Stress at Strain	421 psi @Strain 100 %	Across Flow; ASTM D412
Elongation at Break	600 %	Across Flow; ASTM D412
Tear Strength	143 pli	73°C, Die C; ASTM D624
Compression Set	38 % @Temperature 70.0 °C, Time 79200 sec	ASTM D395
	58 % @Temperature 125 °C, Time 252000 sec	ASTM D395

Thermal Properties	Original Value	Comments
Brittleness Temperature	-80.0 °F	ASTM D746
UL RTI, Electrical	100 °C	UL 746
UL RTI, Mechanical with Impact	85.0 °C	UL 746
Flammability, UL94	HB @Thickness 1.10 mm
	HB @Thickness 1.60 mm
	HB @Thickness 3.00 mm

Processing Properties	Original Value	Comments
Processing Temperature	175 - 230 °C
Rear Barrel Temperature	355 - 385 °F
Middle Barrel Temperature	365 - 390 °F
Front Barrel Temperature	375 - 400 °F
Nozzle Temperature	375 - 410 °F
Die Temperature	365 - 430 °F	Extrusion
Melt Temperature	365 - 430 °F	Extrusion
	390 - 420 °F	Processing
Mold Temperature	75.0 - 125 °F	Processing
Moisture Content	0.080 %
Back Pressure	50.0 - 100 psi
Clamp Pressure	6000 - 10000 psi
Vent Depth	0.00100 in
Cushion	0.125 - 0.250 in
Screw Speed	100 - 200 rpm

Descriptive Properties
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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