L—2型表观粘度函数快测仪的原理和设计

THE PRINCIPLE ANC DESIGN OF VJStOMETER L-2 FOR MEASURING APPARENT VISCOSITY FUNCTION

描述了一种新的L型表观粘度函数快测仪。它是在原L—1型的基础上经重要改进后完成的。它保留了原仪器的一个主要特点即仅用一次测试就能求得复盖一定范围的切变率下的非牛顿流体表观粘度;同时能在通常认为难以测量,却又十分重要的“低剪切” 段令人满意地工作。且所需样品少于2mL。

A new L-type viscometer,the resuit of the improvement of viscometer L-1, is described. This instrument not only retains the advantage of viscometer L-1 s obtaining the apparent viscosity of non-Newtonian fluid as a function of shear rater covering a certain range by a single test, but can work efficiently when the shea: rate of the specimen is too low for apparent svicosity to be measured with conventional viscometers. Besides, it only needs less than 2mL of specimen for a test.