Silpak SP-328-12 Rigid Polyurethane Foam

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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.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.07 g/cc	1.07 g/cc	Part B
	1.20 g/cc	1.20 g/cc	Part A
Density	1.44 g/cc	0.0519 lb/in³
Viscosity	150 - 190 cP	150 - 190 cP	Initial, Part A
	900 - 1300 cP	900 - 1300 cP	Initial, Part B
Storage Temperature	17.8 - 30.0 °C	64.0 - 86.0 °F

Mechanical Properties	Metric	English	Comments
Compressive Strength	2.07 MPa	300 psi

Processing Properties	Metric	English	Comments
Cure Time	1.00 min	0.0167 hour	Cream Time
	2.50 min	0.0417 hour
	10.0 - 15.0 min	0.167 - 0.250 hour	Demold Time
Shelf Life	6.00 Month	6.00 Month

Descriptive Properties
Color	Light brown
Expansion Rate (volume)	<6 times mixed volume
Mix Ratio	50 A : 50 B		by volume
	52% A : 48% B		by 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 view all the property values for this datasheet as they were originally entered into MatWeb.

PSILPAK012 / 318649

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