ISO 2556:1974 塑料.在大气压力下薄膜和?宓钠逋腹实牟舛?测压法

标准编号：ISO 2556:1974

中文名称：塑料.在大气压力下薄膜和?宓钠逋腹实牟舛?测压法

英文名称：Plastics — Determination of the gas transmission rate of films and thin sheets under atmospheric pressure — Manometric method

发布日期：1974-06

标准范围

方法规范和两种合适的试验装置。塑料试样将两个腔室分开，一个包含大气压下的试验气体，另一个已知初始体积的腔室将空气抽出，直到压力几乎为零。通过使用压力计测量第二个腔室中发生的压力增加，确定从一个腔室到另一个腔室通过试样的气体量随时间的变化。

Specification of the methodand of two types of suitable test apparatus. The plastic test specimen separates two chambers, the one contains the test gas at atmospheric pressure, the other of known initial volume has the air pumped out until the pressure is practically zero. The quantity of gas which passes through the specimen from one chamber to the other is determined as a function of time by measuring the increase in pressure occuring in the second chamber by means of a manometer.

标准预览图