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Ensinger PEI

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Silpak SP-328-12 Rigid Polyurethane Foam
Categories: Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)

Material Notes: SP-328-12 A/B is a two-component, self-skinning, rigid, closed cell, water blown, polyurethane rigid foam system. SP-328 foam can be hand mixed or machine dispensed. Small batch mixes are easily achieved using fast, aggressive mixing methods with larger mixes better achieved using a high shear mixing blade (Jiffy Mixer). Once cured, parts can be stained, sanded, or painted shortly after demolding.

Features:

  • 1:1 volume mix
  • Excellent Flow
  • Self-skinning
  • Fast de-molding times
Applications: Recommended for any application where a high-density, light-weight part is required:
  • Furniture production
  • Hollow, light weight furniture parts
  • Picture frames
  • Duck Decoys
  • Floats

Information provided by Silpak a division of Polytek Development Corp.

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesOriginal ValueComments
Specific Gravity 1.07 g/ccPart B
 1.20 g/ccPart A
Density 12.0 lb/gal
Viscosity 150 - 190 cPInitial, Part A
 900 - 1300 cPInitial, Part B
Storage Temperature 64.0 - 86.0 °F
 
Mechanical PropertiesOriginal ValueComments
Compressive Strength 300 psi
 
Processing PropertiesOriginal ValueComments
Cure Time 2.50 min
 10.0 - 15.0 minDemold Time
 60.0 secCream Time
Shelf Life 6.00 Month
 
Descriptive Properties
ColorLight brown
Expansion Rate (volume)<6 times mixed volume
Mix Ratio50 A : 50 Bby volume
 52% A : 48% Bby weight

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

PSILPAK012 / 318649

Proto3000 – 3D Engineering Solutions

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