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Sumitomo Chemical ESPOLEX® 3885 Thermoplastic Elastomer
Categories: Polymer; Thermoplastic; Elastomer, TPE

Material Notes: ESPOLEX® TPE Series is a group of thermoplastic elastomers produced by Sumitomo Chemical Company. Among its material advantages, ESPOLEX® TPE Series is distinguished by offering many low-density grades that can provide substantial weight and cost savings over higher-density thermoplastic elastomers. In this regard, SUMITOMO CHEMICAL introduces specific gravity as a significant factor in reducing unit cost and weight. Products molded from ESPOLEX® TPE Series exhibit rubber-like properties that range from a soft elastic to a semi-hard rubber material. Like all thermoplastic elastomers, ESPOLEX® TPE Series offers substantial savings over thermoset rubber in manufacturing since it is processed using standard thermoplastic processing equipment and techniques, and it does not require the vulcanization required by conventional rubbers.

Information provided by Sumitomo Chemical

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Physical PropertiesOriginal ValueComments
Density 0.880 g/ccASTM D792
Melt Flow 1.5 g/10 min
@Load 2.20 kg
ASTM D1238
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 7510 Sec Delay; ASTM D2240
 850 Sec Delay; ASTM D2240
Tensile Strength at Break 7.50 MPaASTM D412
Elongation at Break 600 %ASTM D412
Flexural Modulus 55.0 MPaASTM D790
Compression Set 25 %
@Temperature 23.0 °C
ASTM D395
 55 %
@Temperature 70.0 °C
ASTM D395
 
Processing PropertiesOriginal ValueComments
Middle Barrel Temperature 200 - 240 °C
Mold Temperature 30.0 - 50.0 °C

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