Improvement on the Viscosity Determination of Polymer Solutions by Ubbelohde-type Viscometer(Ⅲ) ——Design and Application of Automatic Viscometer Yang Haiyang1,2, Yan Yuliang1, Zhu Pingping1, Zhu Qingren2, He Pingsheng1 (1Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, 230026) (2Center of Structural of Research, USTC, Hefei 230026) Abstract If the flow time of the pure solvent t0*, obtained practically by extrapolating the flow time of polymer solution to zero concentration, was employed to determine the viscosity of polymer solution, the relative viscosity of polymer solution could be obtained by comparatively a much simpler experimental procedure. As a result, data sampling and data analyzing carried out by Single chip processor or computer became practical. In the present study, a new set of apparatus was designed so that data sampling and analyzing could be performed automatically. With the help of the designed apparatus, the relative viscosity of polymer solution was easier to be obtained. At the same time, the precision of the viscosity measurement was improved. All the data can be input into the computer automatically to complete the tasks such as plotting and printing. Key words Viscosity measurement, Data sampling, Data processing, Single chip processor 粘度法研究高分子溶液行为的实验改进 (Ⅲ)——自动粘度计的设计和使用 杨海洋 1,2 严宇亮 1 朱平平 1 朱清仁 2 何平笙 1 (1中国科技大学高分子科学与工程系2理化中心 合肥 230026) 摘 要 利用高分子溶液流过时间对浓度作图的外推值 t0*处理粘度数据不仅简化了测量高分子溶液相对粘度的实验步骤，而且会使利用计算机或单片机采集和处理粘度数据变得更加简单易行。笔者在已有粘度测定设备基础上增加一套袖珍的用单片机加以控制的数据采集和处理装置，既可方便地得到高分子溶液粘度测量结果，又可提高实验的精确度。所有测量数据和处理结果可直接输入计算机完成绘图打印等后续工作。 关键词 粘度测定 数据采集 数据处理 单片机 杨海洋 男，39 岁，博士，副教授，主要从事高分子和胶体溶液性质以及低维高分子材料结构与性能的研究。 安徽省自然科学基金资助项目(00046310) 2003-10-31收稿，2004-04-03接受 (PDF全文下载c04087)