ISO 7884-4:1987 玻璃.粘度和粘滞固定点.第4部分：用射线弯曲法测定粘度

标准编号：ISO 7884-4:1987

中文名称：玻璃.粘度和粘滞固定点.第4部分：用射线弯曲法测定粘度

英文名称：Glass — Viscosity and viscometric fixed points — Part 4: Determination of viscosity by beam bending

发布日期：1987-12

标准范围

规定了在杆形试样上测定玻璃动态粘度的方法，即在其端部支撑的梁。在给定荷载下，在支座之间的中点处测量梁的粘性挠度率。此外，还可以确定粘度-温度关系以及粘度对样品热历史的依赖性。文中描述了理论基础关系和包括测量方法在内的仪器。

A method of determining the dynamic viscosity of glass on a rod-shaped test specimen, i.e. a beam, supported at its end is specified. The viscous deflection rate of the beam is measured under given load at the midpoint between the supports. In addition the viscosity-temperature relationship and the dependence of the viscosity on the thermal history of the sample can be determined. The theoretical basis relations and the apparatus including method of measurements are described.

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