ISO 638-2:2021 纸、纸板、纸浆和纤维素纳米材料 用烘箱干燥法测定干物质含量 第2部分：纤维素纳米材料的悬浮液
标准编号：ISO 638-2:2021
中文名称：纸、纸板、纸浆和纤维素纳米材料 用烘箱干燥法测定干物质含量 第2部分：纤维素纳米材料的悬浮液
英文名称：Paper, board, pulps and cellulosic nanomaterials — Determination of dry matter content by oven-drying method — Part 2: Suspensions of cellulosic nanomaterials
发布日期：2021-05
标准范围
本文件规定了用于测定纤维素纳米材料悬浮液中干物质含量的烘箱干燥方法。该方法适用于纤维素纳米材料悬浮液，该悬浮液不含除水以外的任何可感知量的在105℃下挥发性的材料？°C？±？2？°C。例如，当需要同时测定干物质含量时，它用于在实验室中采集用于化学和物理测试的纤维素纳米材料悬浮液样品的情况。笔记？1:？ISO 638-1[1]规定了固体形式的纸、纸板、纸浆和纤维素纳米材料中的干物质含量，这些材料都可以由原始和/或回收材料生产；ISO 287[2]规定了许多纸和纸板水分含量的测定；ISO 4119[3]规定了含水纸浆悬浮液原料浓度的测定；ISO 801（所有零件）[4]规定了批量可销售质量的测定。注2:？本文件测定了样品的总干物质含量，包括任何溶解固体。如果仅需要不含溶解固体的纤维素材料含量，则在测量干物质含量之前除去溶解固体，例如通过洗涤或透析，注意保留所有纤维素材料。
This document specifies an oven-drying method for the determination of the dry matter content in suspensions of cellulosic nanomaterials. The procedure is applicable to cellulosic nanomaterial suspensions which do not contain any appreciable quantities of materials other than water that are volatile at the temperature of 105 °C ± 2 °C. It is used, for example, in the case of cellulosic nanomaterial suspensions samples taken for chemical and physical tests in the laboratory, when a concurrent determination of dry matter content is required.NOTE 1: ISO 638-1[1] specifies the dry matter content in paper, board, pulp and cellulosic nanomaterials in solid form, which all can be produced from virgin and/or recycled materials; ISO 287[2] specifies the determination of moisture content of a lot of paper and board; ISO 4119[3] specifies the determination of stock concentration of aqueous pulp suspensions; ISO 801 (all parts)[4] specifies the determination of saleable mass in lots.NOTE 2: This document determines the total dry matter content of the sample, including any dissolved solids. If only the cellulosic material content free of dissolved solids is desired, dissolved solids are removed prior to measuring the dry matter content e.g. by washing or dialysis, taking care to retain all cellulosic material.
标准预览图
