微细气泡技术

[中文适用范围]： 本文件规定了超细气泡 (UFB) 分散体在水中的表面张力评估方法。采用了 Wilhelmy、du Noüy 和悬滴法这三种测试方法，因为它们具有检测超细气泡分散体在水中的表面张力的微小变化以及商用仪器的高度可及性的优势。本文件可用于测量含有稀表面活性剂水溶液中 UFB 分散体的液体（如清洁剂或加工冷却液）以及水中 UFB 分散体的表面张力。注：含有稀表面活性剂水溶液中 UFB 分散体的液体的测量数据总结在附录 D 中。 [外文原描述]： This document specifies evaluation methods for surface tension of ultrafine bubble (UFB) dispersion in water. Three test methods, Wilhelmy, du Noüy and the pendant drop method, are adopted because of their advantages to detect small change in surface tension by UFB dispersion in water and the high accessibility to commercially available instruments. This document can be used to measure the surface tension of liquid containing UFB dispersion in dilute surfactant water solution such as detergent or machining coolant as well as UFB dispersion in water. NOTE Measurement data of liquid containing UFB dispersion in dilute surfactant water solution are summarized in Annex D.