SIS SS IEC 450-1983 新的和老化电绝缘纸聚合作用的平均粘度等级测量

标准号：SIS SS IEC 450-1983
中文标准名称：新的和老化电绝缘纸聚合作用的平均粘度等级测量
英文标准名称：Measurement ofthe average viscometric degree of polymerization of new and aged electrical papers
发布日期：1983/2/15 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：This specification describes a standard method for determining the average viscometric degree of polymerization (abbreviated DPV) of new or aged electrical papers. The determination is made by measuring the intrinsic viscosity of a solution of the paper in an appropriate solvent.The degree of polymerization (or the degree of condensation) of a particular cellulose molecule is the number of anhydrous-/?-glucose monomers, C6Hi0O5, in the cellulose molecule.Within a sample of paper, all the cellulose molecules do not have the same degree of polymerization so that the mean value measured by viscometric methods is not necessarily the same as that which may be obtained by, for instance, osmotic or ultracentrifuging methods.