Coating Method
意义和目的
4.1 流平会影响建筑涂料的遮盖力和外观, with gloss and semi-gloss finishes showing more noticeable presence of brush marks and surface irregularities than flat finishes. Instrumental evaluation of leveling by this test method has been shown to be relevant for the evaluation of brush applications.

美国材料试验协会D 4062-99-2016 通过划痕法测定涂层的流平度

范围
1.1 本测试方法 2 covers the laboratory determination of the relative leveling of water and solvent resolvable architectural coatings in white and light tones by comparing ridges generated in drawn films with a range of plastic leveling standards.

1.2 Colorless, textured, and dark-toned coatings cannot easily be evaluated with the shadows generated by the oblique lighting employed in this test method. Such coatings can be assessed by comparing them to standards for plastics with different reflection angles. 为了这, ordinary interior lighting is satisfactory.

1.3 As other factors may affect the droop tendency of liquid coatings, this test method is not used to measure flowhang.

1.4 以 SI 单位表示的值应被视为标准值. 括号内的数值仅供参考.

1.5 本标准并非旨在解决所有安全问题, 如果有的话, 与其使用相关. 本标准的使用者有责任建立适当的安全和健康实践，并在使用前确定监管限制的适用性.