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NOVA Chemicals DYLITE® F271TF Expandable Polystyrene Resin
Categories: Polymer; Thermoplastic; Polystyrene (PS); Expanded Polystyrene (EPS)

Material Notes: Lost Foam Grade

Features:

  • Highly consistent bead size
  • High gloss characteristics
  • Food contact compliant

Applications:

  • Lost Foam
  • Foundry Foam
  • Evaporative Casting

Attributes:

  • Good thermal insulation
  • Less exterior condensation
  • Strong and lightweight

The thermal conductivity of expanded polystyrene at an average temperature of 75°F (24°C) is lowest at 3.5 pounds per cubic foot (pcf). It rises slightly at lower density until about 1.5 pcf where it increases rapidly. The rate of increase is much less at higher densities:

  • 8.0 pcf (128 g/l) - 0.269 Btu-in/(hr-ft2-°F) or 38.7 mW/(m-K)
  • 12.0 pcf (192 g/l) - 0.276 Btu-in/(hr-ft2-°F) or 39.8 mW/(m-K)

United States: DYLITE F271TF complies with the U.S.A. Food and Drug Administration (FDA) Code of Federal Regulations 21 CFR 177.1640 for polystyrene and 21 CFR 178.3010 for blowing agents. Thus, DYLITE F271TF may be used in the United States as an article or a component of an article intended for use in contact with food, subject to any limitations described in the regulations.

Europe: DYLITE F271TF complies with the European Union's food contact regulations including the Framework Regulation (EC) No. 1935/2004, Regulation (EC) No. 2023/2006 (GMP) and Regulation (EU) No. 10/2011, as amended, Annex I (including Table 1, Union list of authorized substances) and Annex II.

NOVA Chemicals EPS resins are biologically and chemically inert. NOVA Chemicals EPS resins are do not contain CFC's (Chlorofluorocarbons).

Information provided by NOVA Chemicals®

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
Bulk Density 38.0 - 40.0 lb/ft³
Density 0.0288 g/ccBatch Pre-Expander
 0.0400 g/ccContinuous Pre-Expander
Filler Content 5.6 %Targeted Pentane Content
 5.3 - 5.9 %Pentane Content
Particle Size 300 - 500 µm"T" Bead Size - Fine
 400 µmMean Unexpanded Bead Size
 
Thermal PropertiesOriginal ValueComments
CTE, linear 35.0 µin/in-°F
Thermal Conductivity 0.235 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 175 °F
 
Compliance PropertiesOriginal ValueComments
European Food 1935/2004 Yes
FDA YesSee notes for details.
 
Descriptive Properties
Pre-Expansion Lube Levels(%)None RequiredComes pre-lubed to meet pre-expansion requirements
Pre-Puff Age Time (Hours)2-24
Thermal Resistance (per inch)4.2(R-Value)

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.

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