BS EN ISO 4080-2009 橡胶和塑料软管及软管组件.透气性的测定

标准号：BS EN ISO 4080-2009
中文标准名称：橡胶和塑料软管及软管组件.透气性的测定
英文标准名称：Rubber and plastics hoses and hose assemblies - Determination of permeability to gas
标准类型：G42
发布日期：2010/2/28 12:00:00
实施日期：2010/2/28 12:00:00
中国标准分类号：G42
国际标准分类号：23.040.70
引用标准：ISO 8330;ISO 23529
适用范围：This International Standard specifies three methods for the determination of the volume of gas diffusingthrough a rubber or plastics hose or length of tubing in a specified time.Method 1: For determining the permeability of the complete hose or length of tubing, excluding endfittings, to the test gas. The permeability is calculated with respect to the length of the hose or tubing.Method 2: For determining the permeability at the hose/fitting interface. This method is used whendetermining the permeability characteristics of hoses with an unpricked cover, when the gas usuallyissues from the textile reinforcement at the cut ends. The permeability is calculated with respect to the length of the hose.Method 3: For determining precisely the permeability of a hose or hose assembly to the test gas. Thepermeability is calculated with respect to the surface area of the hose lining.The methods are applicable only to gases which are insoluble in water.NOTE 1 Although the results are expressed in the same units for methods 1 and 2, the results obtained will not necessarily be comparable in the case of unpricked and pricked hoses intended for the same application as the test times specified are different and the permeability could therefore vary.NOTE 2 Method 3 is the preferred method.