橡胶和塑料软管和管材及其组件 气体渗透性的测定

[中文适用范围]： 本文件规定了三种测定气体渗透性的方法，即通过测量在规定时间内通过用于气体应用的橡胶或塑料软管或一段管道扩散的气体量。 — 方法 1 用于测定整个软管壁或一段管道壁（不包括端部配件）对测试气体的渗透性。 — 方法 2 用于测定软管和配件接口对测试气体的渗透性。 — 方法 3 用于精确测定整个软管或一段管道（包括端部配件）的渗透性。 [外文原描述]： This document specifies three methods to determine the permeability to gas by measuring the volume of gas diffusing through a rubber or plastics hose or length of tubing used for gas applications in a specified time. — Method 1 is for determining the permeability of the complete hose wall or length of tubing wall, excluding end fittings, to the test gas. — Method 2 is for determining the permeability at the hose and fitting interface to the test gas. — Method 3 is for precisely determining the permeability of the complete hose or length of tubing, including end fittings.