Polyurethane Foam

_SLIDE_1_ Polyurethane Foam INHA University _SLIDE_2_ Polyurethane foam Flexible Polyurethane Foam _SLIDE_3_ Cell count : Characterize different types of foams Based on the size of the individual cells in the foam matrix Expressed as either average cell diameter Number of cells per linear distance. Test method D3576 Cell count _SLIDE_4_ Core Density : specimen of regular shape without skin (core : the internal portion of a molded part, free of skin) 2) Section Density : specimen with skins on the top and bottom surface. cut from a portion free of voids and defects Density to the nearest 0.1kg/m3 , and Type of specimen, core or section. Density Density : M/V ⅹ106 M = mass of specimen, g V = volume of specimen, mm3 _SLIDE_5_ IFD : Indentation force deflection test Dimension of specimen : less than 380ⅹ380ⅹ100 mm Thickness of specimen : less than 100 mm IFD values for molded products dependent on the specimen dimension. IFD _SLIDE_6_ 2) Procedure IFD …
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