標準號：BS EN ISO 4080-2009
中文標準名稱：橡膠和塑料軟管及軟管組件.透氣性的測定
英文標準名稱：Rubber and plastics hoses and hose assemblies - Determination of permeability to gas
標準類型：G42
發布日期：2010/2/28 12:00:00
實施日期：2010/2/28 12:00:00
中國標準分類號：G42
國際標準分類號：23.040.70
引用標準：ISO 8330;ISO 23529
適用范圍：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.