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Advanced Elastomer Systems Santoprene® 191-85PA Thermoplastic Rubber
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 nylon-6 (insert or 2K [two-shot] molding) and nylon 6,6 (2K molding only); Adhesion values can vary according to type of nylon used, tool design and processing conditions.
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.
| Physical Properties | Metric | English | Comments | |
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| Density | 0.97 g/cc | 0.035 lb/in³ | TPE-0105 (ASTM D792) | |
Mechanical Properties | ||||
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| Hardness, Shore A | 85 | 85 | 5 Second; TPE-0169 (ASTM D 2240) | |
| Tensile Strength, Ultimate | 7.3 MPa | 1060 psi | TPE-0153 (ASTM D 412) | |
| Elongation at Break | 320 % | 320 % | TPE-0153 (ASTM D 412) | |
| 100% Modulus | 0.0048 GPa | 0.696 ksi | TPE-0153 (ASTM D 412) | |
| Graves Tear Strength | 29 kN/m | 165 pli | TPE-0056 (ASTM D 624) | |
| Compression Set | 34 % | 34 % | 23°C, 22 hrs.; TPE-0016 (ASTM D 412) | |
| Compression Set, Elevated Temperature | 47 % | 47 % | 70°C, 22 hrs.; TPE-0016 (ASTM D 412) | |
| Compression Set, Elevated Temperature | 51 % | 51 % | 100°C, 22 hrs.; TPE-0016 (ASTM D 412) | |
Processing Properties | ||||
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| Processing Temperature | 260 - 280 °C | 500 - 536 °F | Recommended | |
| Mold Temperature | Min 60 °C | Min 140 °F | 2K molding | |
| Mold Temperature | Min 90 °C | Min 194 °F | insert molding | |
| Drying Temperature | 82 °C | 180 °F | Desiccant drying for 3 hours recommended | |
| Dry Time | 3 hour | 3 hour | ||
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