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Ensinger PEI

Northstar Polymers MSS-A70GQ High Performance Polyurethane Cast Elastomer System 70A
Categories: Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Liquid

Material Notes: This is a Ester/MDI base high-performance polyurethane casting system. This systems is recommended to applications in which the part requires cut/tear resistance, dry-abrasion resistance, slow response speed, and low energy rebound/response. Ester base systems are generally less expensive than PTMEG base material. Possible applications for this material include skirting for conveyer belts, abrasion resistance liners and parts, and other specialty parts. Unlike conventional full-prepolymer systems, quasi system formulation improves processability, in-mold flow, and components mixing by use of low viscosity prepolymer. This results better physical properties of the products. Can be approved for FDA dry food contact.

Information provided by Northstar Polymers.

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Mechanical PropertiesMetricEnglishComments
Hardness, Shore A 7070ASTM D2240
Tensile Strength 29.0 MPa4200 psiASTM D412
Elongation at Break 800 %800 %ASTM D412
Tear Strength 28.0 kN/m160 pliSplit; ASTM D624
 52.6 kN/m300 pliDie C; ASTM D624
Taber Abrasion, mg/1000 Cycles 1212ASTM D4060
 
Processing PropertiesMetricEnglishComments
Processing Temperature 82.2 °C180 °FPrepolymer Temperature
 82.2 °C180 °FCuring Agent Temperature
Mold Temperature 93.3 °C200 °F
Cure Time  15.0 min
@Temperature 93.3 °C
0.250 hour
@Temperature 200 °F
De-mold Time
 900 min
@Temperature 82.2 °C
15.0 hour
@Temperature 180 °F
Complete Cure Cycle
Pot Life 3.00 min3.00 min
Gel Time 4.00 min4.00 min
 
Descriptive Properties
Curing AgentSBA-041
PrepolymerMSA-018
Weight Ratio1:2.219Prepolymer to Curing Agent Ratio

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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