标准编号：ISO 1663:2007
中文名称：硬质泡沫塑料 水蒸汽透过性测定
英文名称：Rigid cellular plastics — Determination of water vapour transmission properties
发布日期：2007-05
标准范围
This International Standard specifies a method of determining the water vapour transmission rate, watervapour permeance, water vapour permeability and water vapour diffusion resistance index for rigid cellularplastics.The scope of this method provides for the testing of rigid cellular materials that have thicknesses from 10 mmupwards and which may, as an integral part of the material, contain natural skins or adhered facings of somedifferent material.Three different sets of temperature and humidity conditions are provided, as follows:a) 38 °C and a relative-humidity gradient across the test specimen of 0 % to 88 %;b) 23 °C and a relative-humidity gradient across the test specimen of 0 % to 85 %;c) 23 °C and a relative-humidity gradient across the test specimen of 0 % to of 50 %.The results obtained by this method are suitable for design purposes and production control, and for inclusionin product specifications.The method is suitable for materials which have water vapour transmission rates in the range 3 ng/(m2?s) to200 ng/(m2?s).
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