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Ensinger PEI

Northstar Polymers MSS-A85BQ High Performance Polyurethane Cast Elastomer System 85A
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 high tensile strength, 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 8585ASTM D2240
Tensile Strength 42.7 MPa6200 psiASTM D412
Elongation at Break 800 %800 %ASTM D412
100% Modulus 8.515 MPa
@Strain 100 %
1235 psi
@Strain 100 %
ASTM D412
300% Modulus 20.1 MPa
@Strain 300 %
2910 psi
@Strain 300 %
ASTM D412
Rebound 38 %38 %Bashore Rebound; ASTM D2632
Tear Strength 83.3 kN/m475 pliSplit; ASTM D624
 126 kN/m720 pliDie C; ASTM D624
Taber Abrasion, mg/1000 Cycles 3030ASTM D4060
 
Processing PropertiesMetricEnglishComments
Processing Temperature 21.1 °C70.0 °FPrepolymer Temperature
 82.2 °C180 °FCuring Agent Temperature
Mold Temperature 82.2 °C180 °F
Cure Time  30.0 - 40.2 min
@Temperature 82.2 °C
0.500 - 0.670 hour
@Temperature 180 °F
De-mold Time
 960 - 1440 min
@Temperature 82.2 °C
16.0 - 24.0 hour
@Temperature 180 °F
Complete Cure Cycle
Pot Life 2.50 - 3.00 min2.50 - 3.00 min
Gel Time 4.00 min4.00 min
 
Descriptive Properties
Curing AgentSBA-030
PrepolymerMSA-018
Weight Ratio1:1.636Prepolymer 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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