Advanced Elastomer Systems Santoprene® 201-73W175 Thermoplastic Rubber

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Subcategory: Elastomer, TPE; Polymer; Thermoplastic

Material Notes:
A colorable thermoplastic general purpose elastomer designed for thin wall extrusion applications with good fluid resistance, formulated to replace thermoset elastomers such as EPDM, polychloroprene, and chlorosulfonated polyethylene. It can be processed using injection molding, extrusion, blow molding or other melt processing techniques.

Key Features: Dielectric constant 2.3, dielectric strength at 3.17 mm (125 mil), 19.6 kV/mm (500 v/mil); Continuous temperature rating 1000 hrs. @ 135°C (275°F); Excellent flex fatigue resistance; Excellent ozone resistance; Extrudes thin sections with excellent definition (down to 0.33 mm [1.3"] radius). Long runs with minimal build-up of material on screen packs or narrow die sections.

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	0.97 g/cc		TPE-0105 (ASTM D792)
Mechanical Properties
Hardness, Shore A	73		5 Second; TPE-0169 (ASTM D 2240)
Tensile Strength, Ultimate	8.5 MPa		TPE-0153 (ASTM D 412)
Elongation at Break	460 %		TPE-0153 (ASTM D 412)
100% Modulus	0.0036 GPa		TPE-0153 (ASTM D 412)
Tear Strength	28 kN/m		28 kN/m at 23°C. Value at 100°C is 13 kN/m. TPE-0056 (ASTM D 624)
Compression Set	24 %		23°C, 168 hrs.; TPE-0016 (ASTM D 412)
Compression Set, Elevated Temperature	38 %		100°C, 168 hrs.; TPE-0016 (ASTM D 412)
Tensile Set	14 %		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)
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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