ISO 20393-2007 隔热材料.通过扩散测定长期吸水率

标准号：ISO 20393-2007
中文标准名称：隔热材料.通过扩散测定长期吸水率
英文标准名称：Thermal-insulating materials - Determination of long-term water absorption by diffusion
标准类型：Q25
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：Q25
国际标准分类号：83.100
适用范围：This International Standard specifies equipment and procedures for determining the long-term water absorption of test specimens by diffusion. It is intended for use with thermal-insulation products. It is designed to simulate the absorption of water by products subjected for a long period of time not only to high relative humidity, approximating to 100 %, on both sides, but also to a water vapour pressure gradient, as experienced by e.g. inverted roof or unprotected ground insulation.The test is not applicable to all types of thermal-insulation product. The product standard should normally state whether this test is applicable to a particular product.