标准摘要
[中文适用范围]： 此文件规定了一种测试方法，用于测量接触角以确定固体表面的表面自由能。该方法可用于底材和涂层的表征。注意1：为了确定聚合物和涂层的表面自由能，建议使用奥文斯、温特、拉贝尔和凯布尔的方法或吴的方法。注意2：形态学和化学上的均匀性会影响测量结果。本文件中指出的程序基于明暗投影法进行滴落投影，在半影阴影下操作。其他方法未被排除在外。本文件不包括对粉末接触角的测量。 [外文原描述]： This document 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, it is preferred to use either the method according to Owens, Wendt, Rabel and Kaelble or the method according to Wu. NOTE 2 The morphological and chemical homogeneity have an influence on the measuring results. 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. Measuring the contact angle on powders is not part of this document.
英文名称Paints and varnishes — Wettability — Part 2: Determination of the surface free energy of solid surfaces by measuring the contact angle