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本文闸述了当前在设计和使用旋转粘度仪中所存在的一些问题。目前的旋转粘度仪,是按牛顿液体的内摩擦定律设计的,这对牛屯液体流变参数的测量和计算是较为准确的,但对非牛屯液体流变参数的测量和计算,则会产生不可忽视的误差。本文依据非牛屯液体的流变规律,从理论上阐明了用这种仪器测定和计算非牛电液体时,对那些流变参数是较为准确的;对那些流变参数会有较大的误差以及这些误差的范围、影响因素和解决途径,从而进一步阐明了通过使用仪器校正系数B,通过计算非牛屯液体的速度梯度,以达到准确测定非牛屯液体流变性能的方法。为了在引入B值后,仍能较方便的计算塑性液体的动切应力,文章还介绍了改进设计旋转粘度仪的有关方法。
This article outlines some of the current problems in designing and using rotational viscometers. The current rotational viscometer is designed according to the Newton’s law of internal friction, which is relatively accurate for the measurement and calculation of fluid rheological parameters in Niu Tun. However, Produce errors that can not be ignored. Based on the rheology of non-Niu Tun liquid, this paper theoretically elucidates that when using this instrument to measure and calculate non-ox electric liquid, it is more accurate for those rheological parameters; for those rheological parameters, there will be greater error And the range, influencing factors and solutions of these errors, so as to further clarify the method of accurately measuring the rheological properties of non-beef cattle by calculating the velocity gradient of the non-beef cattle by using the instrument calibration coefficient B. In order to calculate the dynamic shear stress of plastic liquid after the introduction of B value, the article also introduces the related methods of improving the design of rotary viscometer.