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COMSOL CD

Advanced Elastomer Systems Santoprene® 251-80 W232 Thermoplastic Rubber

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Subcategory: Elastomer, TPE; Polymer; Thermoplastic

Material Notes:
A colorable thermoplastic flame retardant elastomer with good fluid resistance, formulated to replace thermoset elastomers such as EPDM, polychloroprene, and chlorosulfonated polyethylene. It does not contain polybrominated diphenylethers (PBDEs) and can be processed using injection molding, extrusion, blow molding or other melt processing techniques.

Key Features: Excellent flex fatigue resistance; Excellent ozone resistance; Limiting oxygen index, 26%

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.

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Physical PropertiesOriginal ValueComments
Density1.22 g/cc TPE-0105 (ASTM D792)

Mechanical Properties
Hardness, Shore A80 5 Second; TPE-0169 (ASTM D 2240)
Tensile Strength, Ultimate8.7 MPa TPE-0153 (ASTM D 412)
Elongation at Break520 % TPE-0153 (ASTM D 412)
100% Modulus0.0036 GPa TPE-0153 (ASTM D 412)
Compression Set44 % 
Compression Set, Elevated Temperature61 % 100°C, 168 hrs.; TPE-0016 (ASTM D 412)

Thermal Properties
Brittleness TemperatureMax -57 °C TPE-0089 (ASTM D 746)

Processing Properties
Processing Temperature177 - 232 °C 
Drying Temperature82 °C Desiccant drying for 3 hours recommended
Dry Time3 hour 
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