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Ensinger PEI

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Dow Engage® 8207 Polyolefin Elastomer
Categories: Polymer; Thermoplastic; Elastomer, TPE; Thermoplastic Elastomer, Melt-Processible Rubber

Material Notes: Description: Engage® 8207 polyolefin elastomer is a loose talc surface coated ethylene-octene copolymer. The talc is untreated and has a nominal 1µm particle size. This product offers the exceptional properties of Engage® 8200 with the added potential of handling these polymer pellets in rail cars. Engage® 8207 has excellent flow characteristics and performs well in a wide range of general purpose thermoplastic applications. It provides good impact properties in blends with polypropylene (PP) and polyethylene (PE). The talc addition significantly improves ability to handle the polymer, but severe blocking can occur if the material is stored under severe conditions (i.e., long duration, elevated temperatures, and/or high weight loadings). To minimize temperature effects, product should be stored at temperatures well below its melting point of 60°C.

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Physical PropertiesOriginal ValueComments
Density 0.870 g/ccASTM D792
Mooney Viscosity 8.0
@Temperature 121 °C
ML 1 + 4; ASTM D1646
Melt Index of Compound 5.0 g/10 min
@Load 2.16 kg,
Temperature 190 °C
ASTM D1238
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 75ASTM D2240
Hardness, Shore D 21ASTM D2240
Tensile Strength, Ultimate 6.90 MPa508 mm/min; ASTM D638
Tensile Strength, Yield 2.10 MPa508 mm/min; ASTM D638
Elongation at Break 1030 %508 mm/min; ASTM D638
2% Secant Modulus 0.0121 GPaASTM D790
 
Thermal PropertiesOriginal ValueComments
Melting Point 60.0 °CDSC, 10°C/min; DuPont Test
Brittleness Temperature <= -76.0 °CASTM D746
 
Descriptive Properties
Comonomer Content38 wt%Dow Method (13C NMR/FTIR)

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