ISO 302-2004 纸浆.卡伯(KAPPA)值的测定.pdf

标准号：ISO 302-2004
实施状态：作废
中文名称：纸浆.卡伯(KAPPA)值的测定
英文名称：Pulps - Determination of Kappa number
发布日期：2004-07
被替代标准：ISO 302-2015
代替标准：ISO 302-1981;ISO/FDIS 302-2004
采用标准：BS ISO 302-2007,IDT
起草单位：ISO/TC 6
标准简介：This International Standard specifies a method for the determination of the Kappa number of pulp. The Kappa number is an indication of the lignin content or bleachability of pulp.
This International Standard is applicable to all kinds of chemical pulps and semi-chemical pulps within the Kappa number range 1 to 100. For pulps with a Kappa number exceeding 100, use the chlorine-consumption procedure (ISO 3260) to describe the degree of delignification.
To achieve the greatest precision and accuracy, the sample size should be adjusted so that the consumption of permanganate falls between 20 % and 60 % of the amount added.
NOTE There is no general and unambiguous relationship between the Kappa number and the lignin content of pulp. The relationship varies according to the wood species and delignification procedure. All compounds oxidized by KMnC>4, not only lignin, will increase the consumption of KMnC>4, and thereby increase the Kappa number (see [7]). If the Kappa number is to be used to derive an index of pulp lignin content, specific relationships will have to be developed for each pulp type.
文件格式：PDF
文件大小：198.47KB
文件页数：16
（以上信息更新时间为：2019-11-22）



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