標準號：BS 7034-4-1988
中文標準名稱：玻璃粘度和測定粘度固定點.使用光束彎曲法測定粘度的方法
英文標準名稱：Viscosity and viscometric fixed points of glass - Method for the determination of viscosity by beam bending
標準類型：Q30
發布日期：1989/1/31 12:00:00
實施日期：1989/1/31 12:00:00
中國標準分類號：Q30
國際標準分類號：81.040.10
適用范圍：This part of ISO 7884 specifies a method of determining the dynamic viscosity of glass on a rod-shaped test specimen (called a beam) supported at its ends. The viscous deflection rate of the beam is measured under a 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 viscosity range covered by this method extends from 10