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Dow Engage® 8157 Polyolefin Elastomer

Category Polymer , Thermoplastic , Elastomer, TPE , Thermoplastic Elastomer, Melt-Processible Rubber
Manufacturer Dow Chemical
Trade Name Engage®
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
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Material Notes:
Description: Engage® 8157 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® 8150 with the added potential of handling these polymer pellets in bulk containers. Engage® 8157 has excellent flow characteristics and provides good impact properties in blends with polypropylene (PP) and polyethylene (PE). It is widely used in TPO applications where excellent low temperature impact properties are desired. 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 56°C.Information provided by manufacturer.This former DuPont Dow Elastomers product line is now produced by Dow Chemical.
Physical Properties Metric English Comments
Density 0.868 g/cc
0.0314 lb/in³
ASTM D792
Mooney Viscosity 35

@Temperature 121 °C
35

@Temperature 250 °F
ML 1 + 4; ASTM D1646
Melt Index of Compound 0.50 g/10 min

@Load 2.16 kg,
Temperature 190 °C
0.50 g/10 min

@Load 4.76 lb,
Temperature 374 °F
ASTM D1238
Mechanical Properties Metric English Comments
Hardness, Shore A 75
75
ASTM D2240
Hardness, Shore D 20
20
ASTM D2240
Tensile Strength, Ultimate 10.9 MPa
1580 psi
508 mm/min; ASTM D638
Tensile Strength, Yield 1.90 MPa
276 psi
508 mm/min; ASTM D638
Elongation at Break 780 %
780 %
508 mm/min; ASTM D638
2% Secant Modulus 0.0118 GPa
1.71 ksi
ASTM D790
Thermal Properties Metric English Comments
Melting Point 55.0 °C
131 °F
DSC, 10°C/min; DuPont Test
Vicat Softening Point 39.0 °C
102 °F
ASTM D1525
Brittleness Temperature <= -76.0 °C
<= -105 °F
ASTM D746
Descriptive Properties Value Comments
Comonomer Content 39 wt%
Dow Method (<sup>13</sup>C NMR/FTIR)
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