標準號：SIS SS IEC 450-1983
中文標準名稱：新的和老化電絕緣紙聚合作用的平均粘度等級測量
英文標準名稱：Measurement ofthe average viscometric degree of polymerization of new and aged electrical papers
發布日期：1983/2/15 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：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.