Research Article

Preparation and Sound Insulation Performance of Superfine Metal Powder/Nitrile-Butadiene Rubber-Polyvinyl Chloride Microcellular Foaming Material

Table 2

Surface density, average diameter, and foaming capacity of SFM/NBR-PVC microcellular foaming materials.

Content of SFM (wt%)Thickness (cm)Surface density (g⋅cm−2)Average diameter
±Standard deviation (um)
foaming capacity (%)

00.60.15670.35±19.5176.5
100.60.22864.03±17.1473.6
200.60.27648.75±12.1961.7
300.60.36028.10±5.2352.8
400.60.33641.59±7.4762.7