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  • Closing In With Polyurethane RIM
    the Baydur 726 polyurethane structural-foam (RIM) system. It has strength, good insulation properties, excellent surface finish, and large-part capability. The device uses 29 RIM parts that range in size and weight from a 25-lb part measuring 28 X 14 X 10 in., to a 6 5 1-in. part that weighs less than 0.75
  • Less noise and vibration with foam
    foams to meet requirements for filtering, gasketing, cushioning, noise and vibration-absorption, and heat shielding. Reticulated polyurethane provides a two-part foam filter that protects the generator engine from harmful particles. A prefilter of open-cell foam (10 parts-per-inch (ppi)) catches
  • Foam-friendly fridges
    Ever more stringent standards for energy efficiency force designers to plan carefully for the foam-insulation process. When a cabinet is filling with polyurethane foam, many physical and chemical reactions happen at once. Polymer formation reactions take place. The reaction of diisocyanate
  • Where foam fits in medical design
    A variety of different chemistries and manufacturing processes can fine-tune characteristics in foam. Foams give engineers a range of different and customizable materials for designing medical equipment. Specially cut polyurethane foam is used in this oral swab so it isn't abrasive enough to harm
  • The Detection of Stud Line Cracking in Metal Stud Walls (.pdf)
    Polyurethane spray foams have found widespread use in the construction industry as insulation, moisture and air barriers. Due to the in-field application of Spray-Applied Polyurethane Foam (SPF), the foam is applied under a wide variety of environmental conditions. Applying spray polyurethane foams
  • Dielectric Materials for Use in Radomes
    on application, but there are numerous possibilities. Most of these available prepreg or laminate materials are compatible with rigid polyurethane foam. Self supporting sandwich panels offer tunable multiband performance, thermal insulation and robust physical characteristics, making them the most
  • Hungry for large parts? Try a composite sandwich
    technology is a multistep sandwich composite made by combining three primary processes -- thermoforming, reinforced fiber preforming, and polyurethane foam molding. Complex, three-dimensional parts as large as 25 to 250 ft2, in production volumes beginning at 10,000 units, are possible. The new

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