1.1 本试验方法是一种标准化刷涂程序，用于比较建筑型溶剂型涂料的刷涂阻力。 1.2 经过轻微修改后，该试验方法也适用于溶剂型涂料。 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====== 5.1 随着油漆的笔刷阻力增加，油漆工过度喷涂油漆的任何自然趋势都会减少。 当所有其他因素保持不变时，增加的电刷阻力将导致更大的薄膜厚度，从而提高耐用性和隐蔽性。相反，有时为了更容易应用，可能更倾向于使用较小程度的笔刷拖动（也就是说，使用较少程度的笔刷拖曳可以减少将油漆应用到特定区域的时间和精力）。 5.2 该试验方法提供了一种标准化刷涂程序，用于评估刷涂阻力，作为传统非正式特别程序的替代方案。 其目的是最大限度地提高确定该特性的可靠性和精度。 注1: 涂料的刷阻与其高剪切粘度直接相关。通过该方法获得的结果与测试方法之间通常具有良好的秩序一致性 D4287 已经发现这种刷涂方法的灵敏度足以区分对应于不低于0.3泊（0.03Pa）的高剪切粘度差的刷涂性。 s循环数据表明，当brushout方法和粘度计方法同时存在时，它们之间的秩序一致性较差 乳胶漆和溶剂型涂料属于同一对照组。这是由于这两种涂料具有明显不同的流变特性，从而影响了对刷子阻力的相对感知。 3.

1.1 This test method is a standardized brushout procedure for comparing the brush drag of architectural type solvent-borne paints. 1.2 With slight modifications this test method is also applicable to solvent-borne paints. 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 ====== 5.1 As the brush drag of a paint increases, any natural tendency on the part of the painter to overspread the paint is reduced. When all other factors are held constant, increased brush drag will result in greater film thickness with consequent improvement in durability and hiding. Conversely, sometimes it might be preferred to have a lesser degree of brush drag for easier application (that is, the amount of time and effort in applying a paint to a specific area is reduced with a lesser degree of brush drag). 5.2 This test method provides a standardized brushout procedure for the evaluation of brush drag as an alternative to customary informal ad hoc procedures. Its objective is to maximize the reliability and precision with which this characteristic may be determined. Note 1: The brush drag of paints is directly related to their high-shear viscosity. There is generally good rank order agreement between results obtained by this method and Test Method D4287 . The sensitivity of this brushout method has been found sufficient to distinguish between brushability corresponding to high-shear viscosity differences not lower than 0.3 poise (0.03 Pa.s). Round robin data show that rank order agreement between the brushout and viscometric methods is poor when both latex and solvent-borne paints are part of the same comparison group. This is the result of these two paint types having markedly different rheological properties that affect the relative perception of brush drag. 3