1.1 这些试验方法涵盖了测定墙壁涂料耐擦洗腐蚀性的程序，在本文中称为“耐擦洗性” 1.2 包括以下两种测试方法: 1.2.1 试验方法A- 在测试油漆上获得的失效循环。 1.2.2 试验方法B- 表示为在测试油漆上获得的循环次数与在与已知参考油漆同时运行时获得的循环次数与失败次数的百分比的比率。 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 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，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（TBT）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》中确立的国际公认标准化原则制定的。 ====意义和用途====== 4.1 油漆经常被弄脏，尤其是在门口、窗户附近以及工作和娱乐区域。这些试验方法包括在油漆使用寿命期间反复擦洗时，测定不同油漆的相对耐腐蚀性。 4.2 试验方法 D4213 是一种类似的耐擦洗性测试，使用失重技术并报告体积膜侵蚀率。 4.3 试验方法A通过传统的失效循环概念测量耐擦洗性。擦洗测试中相关性较差的原因可能是刷毛刚度、耐洗性测试仪的条件、应用和干燥条件等方面的变化。为了提高再现性，开发了试验方法B。

1.1 These test methods cover a procedure for determining the resistance of wall paints to erosion caused by scrubbing, referred to herein after as “scrub resistance.” 1.2 Two test methods are covered as follows: 1.2.1 Test Method A— Cycles-to-failure obtained on test paint. 1.2.2 Test Method B— Ratio expressed as a percentage of cycles-to-failure obtained on the test paint to that obtained on a concurrent run with a known reference paint. 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 and health 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 Paints often become soiled, especially near doorways, windows, and in work and play areas. These test methods cover the determination of the relative resistance of different paints to erosion when repeatedly scrubbed during the life of the paint. 4.2 Test Method D4213 is a similar scrub resistance test using a weight-loss technique and reporting volumetric film erosion rates. 4.3 Test Method A measures scrub resistance by the traditional cycles-to-failure concept. Poor correlation in scrub testing can be attributable to among other things variations in the stiffness of the brush bristles, condition of washability tester, application and drying conditions. In an attempt to improve reproducibility, Test Method B has been developed.