标准摘要
[中文适用范围]： 本文件规定了使用倾斜管落球粘度计法测定聚合物和树脂在乳液或分散状态中的粘度的一般原理。适用于表观黏度测量范围为0.6 mPa·s至250 000 mPa·s（温度范围-20 °C至+120 °C）的液体，这些液体的剪切应力和剪切速率成正比，即其粘度不随剪切速率变化。这种理想行为通常被称为牛顿流体行为。如果液体与这种行为有显著差异，则使用落球式粘度计的不同球体或不同结构（如毛细管粘度计和旋转粘度计）可能会得到不同的结果。 [外文原描述]： This document specifies the general principles of a method, using an inclined‑tube falling‑ball viscometer, for determining the viscosity of polymers and resins in the liquid emulsified or dispersed state. It is intended for application to liquids over a viscosity measurement range of 0,6 mPa·s to 250 000 mPa·s (temperature range −20 °C to +120 °C) for which the shear stress and shear rate are proportional, i.e. the viscosity is independent of the shear rate. This ideal behaviour is commonly known as Newtonian behaviour. If a liquid differs significantly from this behaviour, different results can be obtained with the different balls of a falling‑ball viscometer or from viscometers with different geometries, such as capillary and rotational viscometers.
英文名称Plastics — Determination of viscosity using a falling-ball viscometer — Part 1: Inclined-tube method