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Northstar Polymers MCG-1 OOO Scale Microcellular Gel Elastomer

Category Polymer , Thermoset , Polyurethane, TS , Thermoset Polyurethane, Elastomer, Unreinforced
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 MCG-1 OOO Scale Microcellular Gel Elastomer.pdf
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Material Notes:
MCG-1 is formulated for making extremely soft products. MCG-1 has unique structure for this class of material. The cured product will be slightly foamed and give a very soft touch, yet faster responding time than the other polyurethane gel of similar hardness range. MCG-1 has its solid hardness range below Shore OO 1 hardness, or in Shore OOO scale range. This allows a manufacturer to use the molded part at OOO scale without plastic film or coated fabric. Whereas typical polyurethane gel materials have solid range between Shore OO 10 to OO 40 hardness, and if the mixing ratio is modified to obtain a softer range product, the material starts to sag like thick liquid, MCG-1 can service even lower hardness range without being liquid. Another property that is unique to this gel is that since it contains some bubbles inside, it has a property to contract down from the original volume when a deflection force is applied. Regular gel materials do not contract within the same space and need expansion space to deflect, thus typically they are not appropriate for upholstery application. MCG-1 contracts up to a certain point without needing expansion space, thus it can be used as upholstery and bedding applications conveying its softness. The cured part can be directly covered with Spandex type fabric; this allows the part to directly convey the softness of the gel. Suggested applications include: Cushioning and padding parts for sporting goods and medical devices Upholstery application Human-fat simulating products (for doll skins, external breast augmentation etc.)Shock absorbing products Seating products This polyurethane gel material is formulated in such a way that the user can control/choose the hardness/deflection properties of the product. Following is reference for the hardness to the corresponding mixing ratio.Information provided by Northstar Polymers.
Processing Properties Metric English Comments
Processing Temperature 21.1 - 32.2 °C
70.0 - 90.0 °F
Prepolymer Temperature
21.1 - 32.2 °C
70.0 - 90.0 °F
Curing Agent Temperature
Mold Temperature 21.1 - 32.2 °C
70.0 - 90.0 °F
Cure Time 15.0 min

@Temperature 25.0 °C
0.250 hour

@Temperature 77.0 °F
De-mold Time
1440 min

@Temperature 25.0 °C
24.0 hour

@Temperature 77.0 °F
Complete Cure Cycle
Pot Life 2.00 - 2.50 min
2.00 - 2.50 min
Descriptive Properties Value Comments
Curing Agent PAA-033
Prepolymer MPA-026
Weight Ratio 1:8.5
Prepolymer to Curing Agent Ratio
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