Extruded Polystyrene Foam Properties

Ps foams also exhibit good damping properties therefore it is used widely in packaging.

Extruded polystyrene foam properties.

The resulting foam board is then trimmed to the final product dimensions. Astm c578 standard specification for rigid cellular polystyrene thermal insulation addresses the physical properties and performance characteristics of eps foam as it relates to thermal insulation in construction applications. There are two types of polystyrene foam best suited for processing with the hot wire foam cutters and hot knife cutters. Grey polystyrene foam incorporating graphite has superior insulation properties.

Celfort and foamular extruded polystyrene insulation boardsare suitable for all types of high strength construction applications the boards are lightweight durable and impact resistant which helps to reduce job site damage foam insulation can be scored and fabricated easily with common hand tools. Although both types of insulation are comprised of polystyrene the two types of manufacturing processes produce finished products with very different performance properties. Performance properties of extruded polystyrene foam xps insulation in general the physical properties of xps products are best characterized by using the material standard for rigid cellular polystyrene foams. Carl munters and john gudbrand tandberg of sweden received a us patent for polystyrene foam as an insulation product in 1935 usa patent number 2 023 204.

Because the foam board is extruded rather than poured into molds like eps foam board the thickness of the xps product is limited. Styrofoam is the trade name of a range of blue extruded polystyrene foam insulation boards originally developed and marketed by the dow chemical company in the early 1940 s. Astm standard c 578 08b. Foamular extruded polystyrene xps insulation astm c578 types and physical properties this table outlines the basic physical property requirements of astm c5781 and foamular xps insulation compliance.

R value is a measure of a material s resistance to heat transfer. Extruded polystyrene xps foam and expanded polystyrene eps foam. Extruded polystyrene xps rigid foam insulation owens corning foamular 250 extruded polystyrene xps rigid foam insulation is a closed cell highly moisture resistant rigid foam board well suited to meet the needs for a wide variety of residential and commercial construction applications. The thermal conductivity of expanded polystyrene foam of density 20 kg m 3 is 0 035 0 037 w m k at 10 c.

Styrofoam brand scoreboard extruded polystyrene foam insulation is an extruded polystyrene foam insulation board that is scored longitudinally on 16 and 24 centers making it easy to size to commonly used widths cut and install.