Polyurethane Foam
Polyurethane foam
Flexible Polyurethane Foam
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
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
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2013.05.01
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