ISO 4590:2002 硬泡沫塑料.硬质材料开口的和封闭的气室容积百分数的测定

标准编号：ISO 4590:2002

中文名称：硬泡沫塑料.硬质材料开口的和封闭的气室容积百分数的测定

英文名称：Rigid cellular plastics — Determination of the volume percentage of open cells and of closed cells

发布日期：2002-03

标准范围

本国际标准规定了通过首先测量试样的几何体积，然后测量试样的空气不可穿透体积来确定硬质泡沫塑料开孔和闭孔体积百分比的一般程序。该程序包括通过考虑试样制备过程中切割打开的表面细胞来校正表观开孔体积。规定了测量不可穿透体积的两种替代方法（方法1和方法2）以及相应的仪器。从方法2获得的结果仅用于比较目的。

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 are intended to be used for comparison purposes only.

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