意义和目的
5.1 许多建筑涂料, 尤其是白色和浅色, exhibit significant changes in film opacity when drying. The increase in hiding power is sometimes associated with the porosity and poor film integrity of traditional formulated coatings. Reductions can lead to disappointing paint jobs. 因此, the change in covering power from wet to dry is a property of great practical importance.

5.2 This test method can be used for paint specifications and as a short procedure for evaluation and quality control.

ASTM D5007-99-2017 湿遮盖力变化的标准测试方法

范围
1.1 This test method involves determining the change in the hiding power of architectural coatings during drying by visually evaluating wet and dry films.

1.2 This test method is not recommended for colors other than white and light colors.

1.3 以 SI 单位表示的值为准. 括号内的数值仅供参考.

1.4 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.

1.5 本国际标准是根据《关于制定国际标准的原则的决定》中确立的国际公认的标准化原则制定的, 技术性贸易壁垒发布的指南和建议 (技术性贸易壁垒) 世界贸易组织委员会.