ISO 7392:2024 微气泡技术 测定超微气泡分散体表面张力的评价方法

标准编号：ISO 7392:2024

中文名称：微气泡技术 测定超微气泡分散体表面张力的评价方法

英文名称：Fine bubble technology — Evaluation method for determining surface tension of ultrafine bubble dispersions

发布日期：2024-04

标准范围

本文件规定了超细气泡（UFB）分散体在水中的表面张力的评价方法。采用Wilhelmy、du Noüy和悬垂液滴法三种测试方法，因为它们具有通过UFB在水中的分散检测表面张力的微小变化的优点，并且易于使用市售仪器。该文件可用于测量含有UFB分散体的液体在稀表面活性剂水溶液(例如洗涤剂或加工冷却剂)中的表面张力以及UFB分散体在水中的表面张力。笔记？在稀释的表面活性剂水溶液中含有UFB分散体的液体的测量数据总结在附录？D.

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.

标准预览图