Advanced Elastomer Systems Trefsin® 3201-85 W305 Thermoplastic Rubber

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Advanced Elastomer Systems Trefsin® 3201-85 W305 Thermoplastic Rubber (discontinued **)
Categories:	Polymer; Thermoplastic; Elastomer, TPE; Thermoplastic Elastomer, Melt-Processible Rubber
Material Notes:	A natural thermoplastic elastomer with excellent permeation resistance to water, air and other gases. It can be processed using injection molding, extrusion, blow molding or other melt processing techniques. Key Features: Permeability - Air permeation rate @ 23°C (73°F), (ASTM D 1434) 53 cm3.mm/m2.day.atm; TREFSIN rubber is also relatively impermeable to a wide variety of other fluids and gases, and exhibits good resistance to various chemicals, heat and weathering. 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. TREFSIN 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. Advanced Elastomer Systems is now a part of ExxonMobil. This grade was removed from the Advanced Elastomers Systems standard product line before the ExxonMobil acquisiton.
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Physical Properties	Metric	English	Comments

Density	0.950 g/cc	0.0343 lb/in³	TPE-0105 (ASTM D792)
Oxygen Transmission	53.0 cc-mm/m²-24hr-atm	135 cc-mil/100 in²-24hr-atm	Air permeation rate @ 23°C (73°F), (ASTM D 1434)

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	85	85	5 Second; TPE-0169 (ASTM D 2240)
Tensile Strength, Ultimate	9.30 MPa	1350 psi	TPE-0153 (ASTM D 412)
Elongation at Break	370 %	370 %	TPE-0153 (ASTM D 412)
100% Modulus	5.20 MPa @Strain 100 %	754 psi @Strain 100 %	TPE-0153 (ASTM D 412)
Graves Tear Strength	38.2 kN/m	218 pli	TPE-0056 (ASTM D 624)
Compression Set	71 % @Temperature 100 °C	71 % @Temperature 212 °F	22 hrs.; TPE-0016 (ASTM D 412)
	38 % @Temperature 23.0 °C, Time 79200 sec	38 % @Temperature 73.4 °F, Time 22.0 hour	TPE-0016 (ASTM D 412)
Tensile Set	41 %	41 %	23°C, 22 hrs.; per TPE-0053 (ASTM D 412)

Processing Properties	Metric	English	Comments
Processing Temperature	180 - 225 °C	356 - 437 °F
Drying Temperature	82.0 °C	180 °F	Desiccant drying for 3 hours recommended
Dry Time	3 hour	3 hour

**
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