Northstar Polymers MPG-A25A Room-Temperature Curable Liquid Castable Polyurethane
| Manufacturer | Northstar Polymers |
| Trade Name | |
| Port | Shanghai port,China |
| Trade Terms | FOB, CFR, CIF |
| Payment Terms | L/C, T/T, Western Union |
Category Thermoset Polyurethane, Liquid
Description
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 | ASTM D412 |
| Elongation at Break | 291 % | 291 % | ASTM D412 |
| 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 |