1.1 本试验方法包括一种机械摩擦法，用于评估在固化过程中发生化学和/或物理变化的有机涂层的耐溶剂性。这种技术可以在实验室、现场或制造车间中使用。 1.2 本试验方法未规定溶剂、双摩擦次数或预期试验结果。 1.3 以国际单位制或英寸磅单位表示的数值应单独视为标准。每个系统中规定的值不一定是完全相等的； 因此，为了确保符合标准，每个系统应独立使用，并且两个系统的值不得组合。 1.4 本标准并非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====== 5.1 卷材涂料和其他行业中使用的许多涂料在经历了烘烤条件后达到一定程度的耐溶剂性，烘烤条件的特征是随着时间的推移暴露在烘箱中的高温下。烘烤不足或偶尔过度烘烤可能会影响薄膜的预期化学键或物理固化，并导致耐溶剂性降低。 5.2 机械摩擦机提供一致的行程长度、速率、压力和接触面积，不受人体疲劳等变量的影响（见实践 D5402 )。 5.3 烘焙以外的因素会影响涂层表面的耐溶剂性。漆膜化学成分、表面处理、烘箱停留时间、烘箱空气速度、烘箱环境温度、烘箱成型、漆膜厚度等都有影响。摩擦机中使用的测试溶剂对测量的双摩擦次数有显著影响。用于这些测试的常见溶剂包括甲基乙基酮（MEK）、甲基异丁基酮（MIBK）和异丙醇等。 对于任何给定的涂层系统、厚度和应用，制造商和用户应就要使用的特定溶剂和要实现的双摩擦次数达成一致。

1.1 This test method covers a mechanical rub method for assessing the solvent resistance of an organic coating that chemically and/or physically changes during the curing process. This technique can be used in the laboratory, in the field, or in the fabricating shop. 1.2 This test method does not specify the solvent, number of double rubs, or expected test results. 1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 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 ====== 5.1 Many coatings used in the coil coating and other industries achieve a degree of solvent resistance after they have experienced a bake condition characterized by exposure to elevated temperatures in an oven over time. Insufficient bake, or occasionally over bake, may affect the intended chemical bonds or physical curing of the film and result in reduced solvent resistance. 5.2 The mechanical rubbing machine provides consistent stroke length, rate, pressure, and contact area that are not subject to variables such as human fatigue (see Practice D5402 ). 5.3 Factors other than bake can influence degree of solvent resistance of a coated surface. Paint film chemistry and composition, surface preparation, oven dwell time, oven air velocity, ambient oven temperature, oven profiling, film thickness, etc., all are influential. The test solvent used in the rub machine has a significant effect on the number of double rubs measured. Common solvents used for these tests include Methyl Ethyl Ketone (MEK), Methyl Isobutyl Ketone (MIBK), and Isopropyl Alcohol to name a few. The specific solvent to be used and the umber of double rubs to be achieved should be agreed upon between manufacturer and user for any given coating system, thickness, and application.