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ISO 12058-1 : 2018現(xiàn)行

Plastics -- Determination of viscosity using a falling-ball viscometer -- Part 1: Inclined-tube method

出版：International Organization for Standardization

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基本信息
標準編號： ISO 12058-1 : 2018
標準類別：Standard
出版單位：International Organization for Standardization
標準頁數(shù)：0
標準簡介

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.