标准摘要
[中文适用范围]： 本文件规定了一种测定分散在液体中的固体颗粒或液滴（以下统称为“颗粒”）密度的方法。该方法基于这样一个事实：完全浸没在流体中的颗粒受到的浮力等于该颗粒排开的流体的重量（阿基米德原理），如果其质量力与浮力相匹配，则其停止重力或离心沉降/乳化，并且颗粒保持悬浮状态。这意味着颗粒的密度等于液体的密度。在本文件中，颗粒密度测定是通过分析分散在密度低于和高于颗粒密度的液体中的颗粒的迁移运动方向来进行的。所有颗粒都具有相同的材料组成。 [外文原描述]： ISO 18747-1:2018 specifies a method for the determination of the density of solid particles or liquid droplets (below referred to generically as "particles") dispersed in a liquid. The method is based on the fact that a particle wholly immersed in fluid experiences buoyancy equal to the weight of the fluid displaced by this particle (Archimedean principle), and if its mass force matches the buoyant force, it stops gravitational or centrifugal settling/creaming and the particle remains suspended. This implies that the density of the particle equals the density of the liquid. In this document, particle density determination is conducted by analysing the direction of the migration movement of particles dispersed in liquids with densities that are lower and higher than particle density. All particles are of the same material composition.
英文名称Determination of particle density by sedimentation methods — Part 1: Isopycnic interpolation approach