1.1 本规程涵盖了通过在环境温度或高温下将涂层试样部分或完全浸入蒸馏水或去离子水中来测试涂层耐水性的基本原理和操作程序。尽管该装置和程序可用于使用各种材料在水中的溶液的浸渍试验，但这种实践仅限于在水中进行的试验。 1.2 本规程仅限于获得、测量和控制浸水试验条件和程序的方法。 它没有具体说明样品制备、具体测试条件或结果评估。 注1: 测试涂层耐水性的替代实践包括实践 D1735 , D2247 和 D4585 . 1.3 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.4 本标准并不旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.5 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 4.1 浸入水中会导致涂层退化。了解涂层如何防水浸有助于预测其使用寿命。 浸水试验失败可能由多种因素引起，包括涂层本身的缺陷、基材的污染或表面处理不足。因此，该测试可用于评估单独的涂层或完整的涂层系统。 4.2 浸水试验用于涂层和基材处理的研究和开发、规范验收以及制造过程中的质量控制。这些试验通常会确定合格或不合格，但也可以测量不合格的程度。 如果在指定的一段时间后没有证据表明存在与水有关的故障，则认为涂层系统合格。 4.3 在涂层或涂层系统建立定量相关性之前，根据本规程进行的浸水试验的结果不应表示为相当于自然环境中暴露于水的一段时间。 4.4 在浸水试验中，对铁基基材上的划线涂层进行腐蚀试验是不切实际的，因为腐蚀产物往往会污染水浴。 为了保持水质的一致性，有时需要对试验箱进行连续溢流。 4.5 测试仪器相对便宜，可以像带搅拌器的玻璃烧杯一样简单。也可以使用非常大的储罐来测试涂层管道或其他大型涂层产品。

1.1 This practice covers the basic principles and operating procedures for testing water resistance of coatings by the partial or complete immersion of coated specimens in distilled or de-mineralized water at ambient or elevated temperatures. Although the apparatus and procedure could be employed in immersion tests using solutions of various materials in water, this practice is limited to tests in water alone. 1.2 This practice is limited to the methods of obtaining, measuring, and controlling the conditions and procedures of water immersion tests. It does not specify specimen preparation, specific test conditions, or evaluation of results. Note 1: Alternative practices for testing the water resistance of coatings include Practices D1735 , D2247 , and D4585 . 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 Immersion in water can cause the degradation of coatings. Knowledge on how a coating resists water immersion is helpful in predicting its service life. Failure in a water immersion test may be caused by a number of factors including a deficiency in the coating itself, contamination of the substrate, or inadequate surface preparation. The test is therefore useful for evaluating coatings alone or complete coating systems. 4.2 Water immersion tests are used for research and development of coatings and substrate treatments, specification acceptance, and quality control in manufacturing. These tests typically result in a pass or fail determination, but the degree of failure may also be measured. A coating system is considered to pass if there is no evidence of water-related failure after a specified period of time. 4.3 Results obtained from water immersion tests in accordance with this practice should not be represented as being equivalent to a period of exposure to water in the natural environment, until the degree of quantitative correlation has been established for the coating or coating system. 4.4 Corrosion tests of a scribed coating on a ferrous substrate are impractical in water immersion tests as the corrosion products tend to contaminate the water bath. Continuous overflow of the test tank is sometimes required to maintain consistent water quality. 4.5 The apparatus for the test is relatively inexpensive and can be as simple as a glass beaker with a stirrer. It is also possible to use very large tanks for testing coated pipe or other large coated products.