Advanced Elastomer Systems Santoprene® 211-73 Thermoplastic Rubber

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Subcategory: Elastomer, TPE; Polymer; Thermoplastic

Material Notes:
A colorable thermoplastic molding grade elastomer with good fluid resistance, formulated to replace thermoset elastomers such as EPDM, polychloroprene, and chlorosulfonated polyethylene. A high-flow material designed for use in difficult injection molding applications.

Key Features: Dielectric constant 2.3, dielectric strength at 3.17 mm (125 mil), 19.6 kV/mm (500 v/mil); UL Yellow Card listed, UL 94 HB flame rating; Continuous temperature rating 1000 hrs. @ 135°C (275°F); Excellent flex fatigue resistance; Excellent ozone resistance; Designed for applications requiring high-flow materials; Superior mold surface appearance

Additional processing comments: This thermoplastic rubber is a shear-dependent material that can be processed on conventional thermoplastic equipment for injection molding, extrusion, or blow molding. For extrusion, a general purpose screw with a compression ratio of 2.5 to 3.0 is recommended. Material can be recycled. SANTOPRENE rubber is incompatible with acetal and PVC.

Values below are for injection molded plaques, side gated, 82.6 mm x 117.5 mm x 3.0 mm. Tensile properties measured across flow. Data provided by Advanced Elastomer Systems.

Physical Properties	Original Value		Comments
Density	0.96 g/cc		TPE-0105 (ASTM D792)
Mechanical Properties
Hardness, Shore A	73		5 Second; TPE-0169 (ASTM D 2240)
Tensile Strength, Ultimate	7.1 MPa		TPE-0153 (ASTM D 412)
Elongation at Break	450 %		TPE-0153 (ASTM D 412)
100% Modulus	0.0033 GPa		TPE-0153 (ASTM D 412)
Graves Tear Strength	26.7 kN/m		at 23°C. Value at 100°C is 11.4 kN/m. TPE-0056 (ASTM D 624)
Compression Set	33 %		23°C, 168 hrs.; TPE-0016 (ASTM D 412)
Compression Set, Elevated Temperature	52 %		100°C, 168 hrs.; TPE-0016 (ASTM D 412)
Tensile Set	15 %		23°C, 168 hrs.; TPE-0053 (ASTM D 412)
Electrical Properties
Dielectric Constant	2.3		Frequency not specified
Dielectric Strength	19.6 kV/mm		at 3.17 mm (0.125 in)
Thermal Properties
Maximum Service Temperature, Air	135 °C		Continuous temperature Rating, 1000 hours
Brittleness Temperature	Max -60 °C		TPE-0089 (ASTM D 746)
Flammability, UL94	HB
Processing Properties
Processing Temperature	177 - 232 °C
Drying Temperature	82 °C		Desiccant drying for 3 hours recommended
Dry Time	3 hour
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