高温熔体粘度测量方法研究进展

Research progress of viscosity measurement methods of high temperature melts

粘度的测量在很多领域起着重要的作用,尤其是对于高温熔体粘度的测量,选择合适的测量方法对于熔体流变特性的研究以及工业生产的指导至关重要。目前,已有文献中关于高温熔体粘度测量方法的介绍不够清晰和全面,如基本原理介绍模糊、使用温度范围和测量精度缺失,且未充分阐述各种粘度测量方法适用于哪些具体类型的高温熔体。研究将基于现有粘度测量方法,对常见的毛细管法、振荡法、落球法、旋转法在高温熔体粘度测量领域的研究进展进行讨论,并对特殊的平行板法和吊丝法进行详细的分析和对比,同时引入了测量高温熔体粘度的新方法—热台观察法。在此基础上,综合分析对比了每种测量方法的基本原理、测量温度区间和精度范围。最后,指出目前高温熔体粘度测量方法主要存在的问题,并对未来发展和探索方向进行展望。

Viscosity measurement plays a significant role in many fields,especially for high-temperature melt viscosity.The selection of an appropriate measurement method is essential for both the investigation of the rheological properties of melts and the guidance of industrial production.At present,the introduction of viscosity measurement methods for high-temperature melts is not clear or comprehensive enough in the reported literature.For example,the basic principles are only vaguely introduced;the use of the temperature range and the measurement accuracy are missing;and the specific types of high-temperature melts for which the various viscosity measurement methods are applicable are not adequately described.Based on the existing viscosity measurement methods,this study focuses on the research progress of the capillary method,the oscillation method,the falling ball method and the rotation method in the field of viscosity measurement of high-temperature melts,as well as analyzes and compares the special parallel plate method and the hanging wire method in detail.Moreover,the hot-stage observation method,a new method for measuring the viscosity of high-temperature melts,is introduced.On this basis,the basic principles,measuring temperature intervals and accuracy ranges of each measurement method are comprehensively analyzed and compared.Finally,the main problems of the current methods for measuring the viscosity of high-temperature melts are highlighted and future development and exploration directions are prospected.