ISO 7884-4-1987 玻璃 粘度和粘度固定点 第4部分:用弯梁法测定粘度

标准号：ISO 7884-4-1987
中文标准名称：玻璃 粘度和粘度固定点 第4部分:用弯梁法测定粘度
英文标准名称：Glass; Viscosity and viscometric fixed points; Part 4 : Determination of viscosity by beam bending
标准类型：Q30
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：Q30
国际标准分类号：81.040.10
适用范围：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.