Songhan Plastic Technology Co.,Ltd.

Northstar Polymers MPA-A30B Mold-Making Resin

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 MPA-A30B Mold-Making Resin.pdf
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Material Notes:
MPA-A30B 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. MPA-A30B is designed for an easy operation for industrial applications without special casting or heating equipment. The mixing ratio between part-A (MPC-038) and part-B (PAA-071) is 1:2 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 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 MPA-A30B include stamps/patterns and concrete molds designed to transfer a decorative image to wet surfaces. Its property of small shrinkage rate provides users with a tight dimensional stability when a replication is made.Information provided by Northstar Polymers.
Mechanical Properties Metric English Comments
Hardness, Shore A 30 - 35
30 - 35
ASTM D2240
Tensile Strength 3.30 MPa
478 psi
Elongation at Break 435 %
435 %
Tear Strength 9.12 kN/m
52.0 pli
Split; ASTM D624
25.9 kN/m
148 pli
Die-C; ASTM D624
Processing Properties Metric English Comments
Processing Temperature 18.3 - 32.2 °C
65.0 - 90.0 °F
Prepolymer Temperature
18.3 - 32.2 °C
65.0 - 90.0 °F
Curing Agent Temperature
Mold Temperature 21.1 - 71.1 °C
70.0 - 160 °F
Cure Time 480 min

@Temperature 25.0 °C
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 17.0 - 20.0 min
17.0 - 20.0 min
Descriptive Properties Value Comments
Appearance at 25°C Semi-translucent amber
Curing Agent PAA-071
Prepolymer MPC-038
Weight Ratio 1:1.869
Prepolymer to Curing Agent Ratio
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