Wacker Geniomer® 80 Silicone TPE

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Wacker Geniomer® 80 Silicone TPE (discontinued **)
Categories:	Polymer; Thermoplastic; Elastomer, TPE; Silicone, Thermoplastic
Material Notes:	SLM TPSE 80 is a silicone copolymer containing over 90% siloxane. Geniomer® is a two phase block copolymer made up of a soft polydimethylsiloxane (PDSM) phase and a hard aliphatic isocyanate phase. On account of its structure and the high siloxane content, the material is highly flexible and combines excellent transparency with good mechanical properties. SLM TPSE 80 contains neither plasticizers nor reinforcing fillers. It can be processed using standard thermoplastic processing techniques. The high siloxane content prevents impairment of the elastomeric properties at low temperatures. SLM TPSE 80 can be coated with solvent-based paints, some of which may require the use of a suitable primer. Severe mechanical deformation of the elastomer may cause cracks in the coating due to the limited flexibility of the paint. Suggested applications: Production of industrial elastomeric components Processing aid for plastics extrusion Production of transparent film Hydrophobic, breathable textile coatings Flexible composites and bonded joints Information provided by Wacker Silicones.
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Physical Properties	Metric	English	Comments

Density	0.980 - 1.00 g/cc	0.0354 - 0.0361 lb/in³
Water Absorption at Saturation	<= 0.30 %	<= 0.30 %	By Thermogravimetry
Viscosity	7.00e+6 - 9.00e+6 cP @Shear Rate 1 1/s, Temperature 150 °C	7.00e+6 - 9.00e+6 cP @Shear Rate 1 1/s, Temperature 302 °F	Melt; Oscillating cone-plate
	2.00e+7 - 2.50e+7 cP @Shear Rate 1 1/s, Temperature 110 °C	2.00e+7 - 2.50e+7 cP @Shear Rate 1 1/s, Temperature 230 °F	Melt; Oscillating cone-plate

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	45 - 55	45 - 55	DIN 53505
Tensile Strength at Break	4.00 - 6.00 MPa	580 - 870 psi	DIN 53504 S2
Elongation at Break	>= 400 %	>= 400 %	DIN 53504 S2
50% Modulus	0.600 - 1.00 MPa @Strain 50 %	0.600 - 1.00 MPa @Strain 50 %	DIN 53504 S2
100% Modulus	0.900 - 1.50 MPa @Strain 100 %	131 - 218 psi @Strain 100 %	DIN 53504 S2
Tear Strength	20.0 - 30.0 kN/m	114 - 171 pli	Die B; ASTM 624
Compression Set	20 % @Temperature -18.0 °C	20 % @Temperature -0.400 °F	ISO 815
	52 % @Temperature 5.00 °C	52 % @Temperature 41.0 °F	ISO 815
	75 % @Temperature 23.0 °C	75 % @Temperature 73.4 °F	ISO 815
	95 % @Temperature 40.0 °C	95 % @Temperature 104 °F	40°C; ISO 815

Thermal Properties	Metric	English	Comments
Specific Heat Capacity	1.50 - 1.60 J/g-°C	0.359 - 0.382 BTU/lb-°F	DSC
	2.00 - 2.40 J/g-°C @Temperature 200 °C	0.478 - 0.574 BTU/lb-°F @Temperature 392 °F	DSC

Optical Properties	Metric	English	Comments
Refractive Index	1.42 - 1.425	1.42 - 1.425
Transmission, Visible	90 %	90 %	Transparent; thickness not quantified

Processing Properties	Metric	English	Comments
Processing Temperature	185 - 230 °C	365 - 446 °F	Metering Zone
Feed Temperature	30.0 °C	86.0 °F
Mold Temperature	20.0 - 40.0 °C	68.0 - 104 °F
Injection Pressure	2.00 - 50.0 MPa	290 - 7250 psi	Melt Pressure

**
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PWACK01 / 72277

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