Songhan Plastic Technology Co.,Ltd.

Northstar Polymers MPG-A25A Room-Temperature Curable Liquid Castable Polyurethane

Category Polymer , Thermoset , Polyurethane, TS , Thermoset Polyurethane, Liquid
Manufacturer Northstar Polymers
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Northstar Polymers MPG-A25A Room-Temperature Curable Liquid Castable Polyurethane.pdf
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Material Notes:
MPG-A25A is a room-temperature-cure liquid castable polyurethane system. This ether-base polyurethane system is used in applications such as mold-making, prototyping, production of cast parts, potting, tool-making, and many other applications. MPG-A25A is designed for an easy operation for industrial applications without special casting or heating equipment. The mixing ratio between part-A (MPG-062) and part-B (PPA-059) is 1:1 by volume. The material is specially formulated to be less moisture sensitive for relatively uncontrolled processing environments. Its low viscosity also makes it easy to achieve replicating the details of the mold/original with a fine resolution. Urethane elastomer parts made of this system exhibit: Fine resolution of mold details Highly flexible finish for easy demolding of parts Good resiliency and elongation for easy demolding of parts Good cut/tear resistance for its class Good performance in wet environments The suitable applications of MPG-A25A include stamps/patterns and concrete molds designed to transfer a decorative image to wet surfaces. This material is recommended specially for making patterns with high degree of under cuts.Information provided by Northstar Polymers.
Mechanical Properties Metric English Comments
Hardness, Shore A 20 - 27
20 - 27
ASTM D2240
Tensile Strength 2.14 MPa
311 psi
Elongation at Break 291 %
291 %
Tear Strength 3.51 kN/m
20.0 pli
Split; ASTM D624
10.7 kN/m
61.0 pli
Die-C; ASTM D624
Processing Properties Metric English Comments
Processing Temperature 21.1 - 35.0 °C
70.0 - 95.0 °F
Prepolymer Temperature
21.1 - 35.0 °C
70.0 - 95.0 °F
Curing Agent Temperature
Mold Temperature 21.1 - 35.0 °C
70.0 - 95.0 °F
Cure Time 300 - 480 min

@Temperature 25.0 °C
5.00 - 8.00 hour

@Temperature 77.0 °F
De-mold Time
4320 - 5760 min

@Temperature 25.0 °C
72.0 - 96.0 hour

@Temperature 77.0 °F
Complete Cure Cycle
Pot Life 20.0 min
20.0 min
Descriptive Properties Value Comments
Curing Agent PPA-059
Prepolymer MPG-062
Weight Ratio 1:0.966
Prepolymer to Curing Agent Ratio
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