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Rulon Bearings

Northstar Polymers MPS-F08A Hand-Mixable Flexible Foam
Categories: Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane Foam, Unreinforced

Material Notes: This foam formulation is designed to make molded flexible foam parts/sheets/dies/blocks by hand-mixing or machine casting by the meter dispensing equipment. The components are stable and liquid at room temperature and ambient pressure. It requires minimum tooling for a small production or short runs. The mixing ratio is simple 1:2 by volume. These properties are ideal in small scale productions for custom foam applications such as custom seating, padding, and cushioning. Generally this medium density foam yields firmer foam comparing to lower density foams. For softer, less firm foam quality, a 6 pound-per-cubic foot formula MPS-F06B is recommended. Or for firmer grade, use firm-flexible foam FFM-1.

The free-rise density of the foam is 7.5 pounds per cubic foot, and the cell structure is open-cell. This is an MDI base water-blown polyester/polyether hybrid system, and it does not use flammable or ozone-layer-depleting auxiliary blowing agents

Examples for Applications:

  • Molded Upholstery Parts
  • Custom Seating, Padding, and Cushioning Parts
  • Custom Packaging of Impact/Vibration-Sensitive Items
  • Prototyping

Information provided by Northstar Polymers.

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Density 0.120 g/cc0.00434 lb/in³Free Rise Density
 0.128 g/cc0.00463 lb/in³Typical Compression Density
 
Mechanical PropertiesMetricEnglishComments
Hardness, Shore OO 25 - 3525 - 35
Tensile Strength 0.331 MPa48.0 psi
Elongation at Break 130 %130 %
Compressive Strength  0.0241 MPa
@Strain 25 %
3.50 psi
@Strain 25 %
 0.0634 MPa
@Strain 50 %
9.20 psi
@Strain 50 %
Rebound 30 %30 %Bashore Rebound
Tear Strength 0.596 kN/m3.40 pliSplit Tear Resistance
 
Processing PropertiesMetricEnglishComments
Processing Temperature 21.1 - 32.2 °C70.0 - 90.0 °FPrepolymer Temperature
 21.1 - 32.2 °C70.0 - 90.0 °FCuring Agent Temperature
Mold Temperature 37.8 - 54.4 °C100 - 130 °F
Cure Time  19.8 - 40.2 min
@Temperature 43.3 °C
0.330 - 0.670 hour
@Temperature 110 °F
De-mold Time
 60.0 min
@Temperature 82.2 °C
1.00 hour
@Temperature 180 °F
Complete Cure Cycle
 1440 min
@Temperature 25.0 °C
24.0 hour
@Temperature 77.0 °F
Complete Cure Cycle
Pot Life 0.500 min0.500 min
 
Descriptive Properties
Curing AgentPPC-031
PrepolymerMSA-018
Weight Ratio1:1.7Prepolymer 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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PNORTH897 / 162613

Aluminum Castings

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