【英文标准名称】: Standard Test Method for Water Penetration into Pipeline Coatings 【原文标准名称】: 管道涂层渗水性的标准试验方法 【标准号】: ASTM G9-2007 【标准状态】: 现行 【国别】: 【发布日期】: 2007 【实施或试行日期】: 【发布单位】: 美国材料与试验协会(US-ASTM)【起草单位】: D01.48【标准类型】: (Test Method)【标准水平】: ()【中文主题词】: 涂层;材料;非金属;管道;测试【英文主题词】: capacitance; coating; dielectric constant; dissipation factor; immersion; pipeline; water absorption; water penetration【摘要】: The deterioration of an insulating coating film is intimately related to its moisture content. The water penetration test provides a means for monitoring the passage of moisture through a coating material by means of changes in its dielectric constant. When expressed in relation to time, the test data will reflect a rate of deterioration which is a characteristic of the coating material and will bear a relation to its expected useful life as an insulating coating. The test for water penetration will also provide information that is useful in establishing the optimum coating thickness for a given material.1.1 This method covers the determination of the apparent rate of depth of water penetration into insulating coatings applied to pipe. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.【中国标准分类号】: A29【国际标准分类号】: 23_040_01【页数】: 4P.;A4【正文语种】:
