Standard Test Method for Measurement of Viscosity of Glass Between 10<sup>4</sup> Pa·s and 10<sup>8</sup> Pa·s by Viscous Compression of a Solid Right Cylinder [Metric]
用实心右圆筒粘性压缩法测量10<sup>4</sup>Pa·s和10<sup>8</sup>Pa·s之间玻璃粘度的标准试验方法[米制]
1.1
This test method covers the determination of the viscosity of glass from 10
4
Pa·s to 10
8
Pa·s by measuring the rate of viscous compression of a small, solid cylinder.
2
1.2
The values stated in SI units are to be regarded as the standard.
1.3
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
====== Significance And Use ======
4.1
This test method is well suited for measuring the viscosity of glasses between the range within which rotational viscometry (see Practice
C965
) is useful and the range within which beam bending viscometry is useful (see Test Method
C1350M
). It can be used to determine the viscosity/temperature curve in the region near the softening point (see Test Method
C338
). This test method is useful for providing information related to the behavior of glass as it is formed into an object of commerce, and in research and development.