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	Original Value	Comments

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

Mechanical Properties	Original Value	Comments
Hardness, Shore A	45 - 55	DIN 53505
Tensile Strength at Break	4.00 - 6.00 MPa	DIN 53504 S2
Elongation at Break	>= 400 %	DIN 53504 S2
50% Modulus	0.000600 - 0.00100 GPa @Strain 50 %	DIN 53504 S2
100% Modulus	0.000900 - 0.00150 GPa @Strain 100 %	DIN 53504 S2
Tear Strength	20.0 - 30.0 kN/m	Die B; ASTM 624
Compression Set	20 % @Temperature -18.0 °C	ISO 815
	52 % @Temperature 5.00 °C	ISO 815
	75 % @Temperature 23.0 °C	ISO 815
	95 % @Temperature 40.0 °C	40°C; ISO 815

Thermal Properties	Original Value	Comments
Specific Heat Capacity	1.50 - 1.60 J/g-°C	DSC
	2.00 - 2.40 J/g-°C @Temperature 200 °C	DSC

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

Processing Properties	Original Value	Comments
Processing Temperature	185 - 230 °C	Metering Zone
Feed Temperature	30.0 °C
Mold Temperature	20.0 - 40.0 °C
Injection Pressure	2.00 - 50.0 MPa	Melt Pressure

**
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