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Northstar Polymers MPC-W44A Polyurethane Gel
Categories: Polymer; Renewable/Recycled Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane, Elastomer, Unreinforced

Material Notes: MPC-W44A is a polyurethane gel formulation specifically designed for padding and cushioning application that requires Shore Durometer OOO scale hardness. Produces good rebound characteristics and gradual compression deflection rates at the Shore OOO hardness range.

This material contains bio-base renewable raw material. The concentration of the renewable material can be above 40% by weight depending on the mixing ratio. This may be classified as bio-base material in certain applications. The material does not contain any plasticizer, which is known to leach out to have adverse effects to the plastic film encapsulation materials used in conjunction with the polyurethane gel materials.

This formula uses MPA-026 prepolymer, which has much lower viscosity than current standard OOO scale gel material MPP-W43C. Like other polyurethane gel formulations, this material is made in such way that the user can change the hardness and other physical property of cured part simply by changing the mixing ratio of the given components. This allows users to make variety products with just one combination of part-A and part-B components. The applications for this material include cushioning and padding parts for medical/semi-medical application, fiber optic cable encapsulation, novelty products, and many more.

Information provided by Northstar Polymers.

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Processing PropertiesOriginal ValueComments
Processing Temperature 70.0 - 90.0 °FPrepolymer Temperature
 70.0 - 90.0 °FCuring Agent Temperature
Mold Temperature 70.0 - 90.0 °F
Cure Time 3.00 - 6.00 hour
@Temperature 25.0 °C
De-mold Time
 72.0 - 120 hour
@Temperature 25.0 °C
Complete Cure Cycle
Pot Life 10.0 - 15.0 min
 
Descriptive Properties
Curing AgentPCA-054
PrepolymerMPA-026
Weight Ratio1:5.318Prepolymer to Curing Agent Ratio, Shore Hardness OO 24
 1:5.724Prepolymer to Curing Agent Ratio, Shore Hardness OO 14
 1:6.133Prepolymer to Curing Agent Ratio, Shore Hardness OO 8
 1:6.133Prepolymer to Curing Agent Ratio, Shore Hardness OOO 74
 1:6.542Prepolymer to Curing Agent Ratio, Shore Hardness OOO 70
 1:6.951Prepolymer to Curing Agent Ratio, Shore Hardness OOO 62
 1:7.360Prepolymer to Curing Agent Ratio, Shore Hardness OOO 54
 1:7.769Prepolymer to Curing Agent Ratio, Shore Hardness OOO 38
 1:8.178Prepolymer to Curing Agent Ratio, Shore Hardness OOO 31-34

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PNORTH861 / 162577

Specialty Compounds RTP Company

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