石油产品及相关产品

[中文适用范围]： 本文件规定了使用恒压粘度计测定动态粘度η和密度ρ的程序，用于计算中间馏分燃料、脂肪酸甲酯燃料（FAME）及其混合物（最高 60% 中间馏分燃料）和润滑油（例如基础油、配方油）和合成油的运动粘度ν。本测试方法涵盖的运动粘度范围为 0.5 mm2/s 至 2 000 mm2/s，40°C 时的精度为 1.0 mm2/s 至 1 286 mm2/s，100°C 时的精度为 3.0 mm2/s 至 157 mm2/s。使用本文件中描述的程序获得的结果取决于样品的流变行为。本文件主要适用于剪切应力和剪切速率成比例的液体（牛顿流动行为）。然而，如果粘度随剪切速率发生显著变化，则只有在相似的剪切速率下才允许与其他测量方法进行比较。 [外文原描述]： This document specifies a procedure for determining dynamic viscosity, η , and density, ρ , for the calculation of kinematic viscosity, ν , of middle distillate fuels, fatty acid methyl ester fuels (FAME) and mixtures thereof, up to 60 % with middle distillate fuels, and lubricating oils (e.g. base oils, formulated oils), and synthetics, using a constant pressure viscometer. The range of kinematic viscosities covered in this test method is from 0,5 mm 2 /s to 2 000 mm 2 /s, with precision at 40 °C from 1,0 mm 2 /s to 1 286 mm 2 /s, and precision at 100 °C from 3,0 mm 2 /s to 157 mm 2 /s. The result obtained using the procedure described in this document depends on the rheological behaviour of the sample. This document is predominantly applicable to liquids whose shear stress and shear rate are proportional (Newtonian flow behaviour). However, if the viscosity changes significantly with the shear rate, comparison with other measuring methods is only permissible at similar shear rates.