1.1 本试验方法规定了一种测定熔融热固性涂层粉末沿与水平面成一定角度倾斜的平面流动特性的方法。该试验给出了涂层粉末固化过程中可能出现的熔体流动程度的指示。该特性有助于涂层的一致性、表面外观和锐边的覆盖程度（见试验方法 D2967 )然而，它不应被用作判断的唯一因素。该试验可作为一种有用的方法，用于检查给定涂层粉末性能的批次间变化。不同成分的涂层粉末的结果之间不存在相关性。对于在试验温度下凝胶时间小于1分钟的涂层粉末，该方法不可能产生有意义的结果（见试验方法 D4217 ). 烘箱通风、倾角和颗粒变化显著影响结果，使实验室间再现性难以关联。 1.2 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。 1.3 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。 1.4 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====== 5.1 该试验方法有助于选择在最小剪切下具有类似熔体流动特性的涂层粉末。不建议将其作为绝对测量，而建议将其作为同时测量的同一面板上样品的比较测量。

1.1 This test method specifies a method for determining the flow characteristics of a fused thermosetting coating powder down a plane inclined at a set angle to the horizontal. The test gives an indication of the degree of melt flow that may occur during the curing of the coating powder. This characteristic contributes to the coherence of the coating, to its surface appearance and to the degree of coverage over sharp edges (see Test Method D2967 ), however, it should not be used as the sole factor for judgment. The test acts as a useful method for checking for batch to batch variation in the behavior of a given coating powder. Correlation between the results from coating powders of differing composition is not to be expected. This method is unlikely to yield meaningful results with coating powders which have gel times of less than one minute at the test temperature (see Test Method D4217 ). Oven drafts, angle of inclination and pellet variations significantly affect results making inter-lab reproducibility somewhat difficult to correlate. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 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 to determine the applicability of regulatory limitations prior to use. 1.4 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 This test method is useful for selecting coating powders of similar characteristics of melt flow under minimal shear. It is not recommended as an absolute measurement, but rather as a comparative measurement of samples on the same panel measured at the same time.