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COMSOL CD

Advanced Elastomer Systems Santoprene® 191-70PA Thermoplastic Rubber

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Subcategory: Elastomer, TPE; Polymer; Thermoplastic

Material Notes:
A black thermoplastic elastomer especially formulated to be used in combination with polyamide (PA) for applications where hard/soft combinations are required. Since the product bonds to PA, typical applications are corrugated hose and fittings, soft grip handles and wheels with PA hubs. It can be processed using injection molding or extrusion.

Key Features: Excellent processing in injection molding; Smooth surface or 'soft touch'; Good rubbery properties; Excellent adhesion onto PA

Additional processing comments: This thermoplastic rubber is a shear-dependent material that can be processed on conventional thermoplastic equipment for injection molding or extrusion. 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
Density0.95 g/cc TPE-0105 (ASTM D792)

Mechanical Properties
Hardness, Shore A70 5 Second; TPE-0169 (ASTM D 2240)
Tensile Strength, Ultimate3.7 MPa TPE-0153 (ASTM D 412)
Elongation at Break270 % TPE-0153 (ASTM D 412)
100% Modulus0.0023 GPa TPE-0153 (ASTM D 412)
Graves Tear Strength22 kN/m TPE-0056 (ASTM D 624)
Compression Set28 % 23°C, 22 hrs.; TPE-0016 (ASTM D 412)
Compression Set, Elevated Temperature41 % 70°C, 22 hrs.; TPE-0016 (ASTM D 412)
Compression Set, Elevated Temperature46 % 100°C, 22 hrs.; TPE-0016 (ASTM D 412)

Processing Properties
Processing Temperature260 - 280 °C Recommended
Mold TemperatureMin 60 °C 2K molding
Mold TemperatureMin 90 °C insert molding
Drying Temperature82 °C Desiccant drying for 3 hours recommended
Dry Time3 hour 
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