ISO 2556-1974 塑料 在大气压力下薄膜和薄板的透气率的测定 测压法

标准号：ISO 2556-1974
中文标准名称：塑料 在大气压力下薄膜和薄板的透气率的测定 测压法
英文标准名称：Plastics; Determination of the gas transmission rate of films and thin sheets under atmospheric pressure; Manometric method
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：83.080.01
适用范围：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.