Silpak SP-328-8 Rigid Polyurethane Foam

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Silpak SP-328-8 Rigid Polyurethane Foam
Categories:	Polymer; Thermoset; Rubber or Thermoset Elastomer (TSE)
Material Notes:	Silpak SP-328-8 casting foam consists of two parts (A and B) that, after mixing, forms rigid or flexible foam product with densities of 8 lb/ft³. Consider SP-328-8 for production of decorative objects, lightweight mold shells, production parts, models, patterns, fixtures, duplicate masters and general tooling use. SP-328-8 is practically odorless and does not contain toluene diisocyanate, MOCA, heavy metals or HCFCs. Features: Molded density of 8-20 lb/ft³. 1A:1B mix ratio by weight or volume Suitable for casting parts and filling voids Applications: For production of: Decorative objects Lightweight mold shells Production parts Models Patterns Fixtures General tooling use Information provided by Silpak a division of Polytek Development Corp.
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Physical Properties	Original Value	Comments

Density	8.00 lb/gal	Free-Rise
	8.00 - 20.0 lb/gal	Molded
Viscosity	1100 cP	Mixed
Storage Temperature	60.0 - 90.0 °F

Processing Properties	Original Value	Comments
Cure Time	3.00 min	Tack-Free Time
	10.0 - 15.0 min	Demold Time
	45.0 sec	Cream Time
	120 sec	Rise Time
Shelf Life	6.00 Month

Descriptive Properties
Mix Ratio	1A : 1B	by volume
	1A : 1B	by weight

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PSILPAK014 / 318651

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