Abstract

This Uganda Standard specifies a general procedure for the determination of the volume percentage of open and of closed cells of rigid cellular plastics, by measurement first of the geometrical volume and then of the air impenetrable volume of test specimens. The procedure includes the correction of the apparent open-cell volume by taking into account the surface cells opened by cutting during specimen preparation. Two alternative methods (method 1 and method 2), and corresponding apparatus, are specified for the measurement of the impenetrable volume. (This second edition cancels and replaces the first edition US ISO 4590:2002, Rigid cellular plastics - Determination of the volume percentage of open cells and of closed cells, which has been technically revised) This standard was PUBLISHED on 2020-06-16