ISO 4590-2002 硬质泡沫塑料.开口和封闭气室容积百分数测定

标准号：ISO 4590-2002
中文标准名称：硬质泡沫塑料.开口和封闭气室容积百分数测定
英文标准名称：Rigid cellular plastics - Determination of the volume percentage of open cells and of closed cells
标准类型：G31
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：G31
国际标准分类号：83.100
适用范围：This International 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. The results obtained from method 2 (see clause 9) are intended to be used for comparison purposes only.