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NOVA Chemicals Dytherm® 350R Expandable Polystyrene

Category Polymer , Thermoplastic , Polystyrene (PS) , Expanded Polystyrene (EPS)
Manufacturer NOVA Chemicals
Trade Name Dytherm®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF NOVA Chemicals Dytherm® 350R Expandable Polystyrene.pdf
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Material Notes:
This is a special grade consisting of spherical beads of a blend of polystyrene-polyphenylene ether containing pentane as expansion agent, typically used for medium density foam with improved thermal resistance.Applications: This grade is used for medium density foam with wall-thickness generally greater than or equal to 10 mm and with improved thermal resistance. Typical applications include hot-water insulation and automotive parts (interior and exterior).Processing of DYTHERM beads on pressurized batch pre-expander is recommended. It can be process on a continuous pre-expander when higher densities are acceptable.This grade should not be used for food contact applications.Information provided by NOVA Chemicals.
Physical Properties Metric English Comments
Bulk Density 0.620 g/cc
0.0224 lb/in³
Density >= 0.0300 g/cc
>= 0.00108 lb/in³
Minimum achievable; Single stage pre-expansion in continuous expander at atmospheric pressure
0.0300 - 0.100 g/cc
0.00108 - 0.00361 lb/in³
Normal molded density assuming cost optimized selection of processing conditions.
Bead Size 0.600 - 1.00 mm
0.0236 - 0.0394 in
Breda Laboratory Analytical Methods 90.30
0.700 - 1.00 mm
0.0276 - 0.0394 in
Thermal Properties Metric English Comments
Maximum Service Temperature, Air 118 °C
244 °F
Modified ISO 2796-1980; Typical maximum temperature to which parts can be exposed short term (1 hour) without significant deformation (<1%).
Chemical Properties Metric English Comments
Styrene Content <= 0.10 %
<= 0.10 %
Residual Styrene Monomer Content per Breda Laboratory Analytical Methods 90.16
Blowing Agent Content >= 5.8 %
>= 5.8 %
Breda Laboratory Analytical Methods 90.18
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