BS ISO 19403-2:2017规定了测定表面接触角的试验方法 固体表面的自由能。该方法可用于基底和材料的表征 涂料。注1:对于测定聚合物和涂层的表面自由能，可采用 最好使用符合Owens、Wendt、Rabel和Kaelble的方法或符合Wu的方法。注2:形态和化学均匀性对测量结果有影响。注3:本文件中所述的程序基于采用滴灌的最新技术 半影投影法。其他方法也不排除在外。注4:测量粉末的接触角不是本文件的一部分。有关更多信息，请参阅 参考文献交叉引用:ISO 4618:2014 ED2ISO 19403-1:2017 ISO 3270:1984（R08）ISO 19403-3:2017EN 14370:2004购买时可用的所有当前修订版均包含在本文件的购买中。

BS ISO 19403-2:2017 specifies a test method to measure the contact angle for the determination of the surface free energy of a solid surface. The method can be applied for the characterization of substrates and coatings.NOTE 1 For the determination of the surface free energy of polymers and coatings, either the method in accordance with Owens, Wendt, Rabel and Kaelble or the method in accordance with Wu is used preferably.NOTE 2 The morphological and chemical homogeneity have an influence on the measuring results.NOTE 3 The procedures indicated in this document are based on the state-of-the-art employing the drop projection method in penumbral shadow. Other methods are not excluded.NOTE 4 Measuring the contact angle on powders is not part of this document. For further information, see the bibliography.Cross References:ISO 4618:2014 ED2ISO 19403-1:2017 ISO 3270:1984 (R08)ISO 19403-3:2017EN 14370:2004All current amendments available at time of purchase are included with the purchase of this document.