亚硫酸盐木浆粕黏度测定方法的研究

Study on Viscosity Measurement Method of Sulfite Wood Pulp

通过考察亚硫酸盐木浆粕平行取样、干燥方法、黏度测试方法、黏度高低和蒸煮盐基种类对动力黏度和特性黏度测定结果的影响,对比分析铜氨溶液测定动力黏度和铜乙二胺溶液测定特性黏度两种黏度测定方法的适用性和准确度,得到适用于亚硫酸盐木浆粕黏度的测定方法。结果表明,对于亚硫酸盐木浆粕黏度的测定,选用特性黏度测定方法、风干干燥方式、多次取样可提高黏度测定结果的准确度。

By studying the effects of parallel sampling, drying method, test method of viscosity, high and low viscosity of the pulp and base types of cooking liquor on determination results of dynamic viscosity and intrinsic viscosity, the applicability and accuracy of two viscosity tes- ting methods, i.e. dynamic viscosity measurement using cuprammonium solution, and intrinsic viscosity measurement using cupri-ethylenedi- amine solution, were compered and analyzed. A viscosity determination method suitable for sulfite dissolving pulp was obtained. The results indicated that for the viscosity determination of sultite wood pulp, the accuracy of viscosity determination was able to be improved by adopting intrinsic viscosity determination method, air drying method and multiple sampling.