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1部分:固体材料

[中文适用范围]： 本文件规定了用于测定固体形式的纸张、纸板、纸浆和纤维素纳米材料中干物质含量的烘干方法，这些材料都可以由原始和/或回收材料生产。 本标准也适用于回收用纸和纸板干物质含量的测定。 该程序适用于纸张、纸板、纸浆和纤维素纳米材料，这些材料除水外不含有任何可察觉数量的在 105 °C ± 2 °C 温度下挥发的材料。 例如，当需要同时测定干物质含量时，它可用于在实验室中采集纸浆、纸张、纸板和纤维素纳米材料样品进行化学和物理测试。 本方法不适用于浆泥干物质含量的测定或纸浆批次可销售质量的测定。 注1：ISO 638-2[1]规定了测定纤维素纳米材料悬浮液干物质含量的烘干方法，ISO 287[2]规定了测定大量纸和纸板的水分含量； ISO 4119[3]规定了纸浆浆料浓度的测定； ISO 801 系列[4] 规定了批次可销售质量的确定。 注 2：本文件确定样品的总干物质含量，包括任何溶解的固体。 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；如果样品可过滤且不会损失纤维素固体，则可以使用 ISO 4119[3] 来确定库存浓度（固体形式的纤维素材料的含量）。 [外文原描述]： This document specifies an oven-drying method for the determination of 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. It is also applicable to the determination of the dry matter content of paper and board for recycling. The procedure is applicable to paper, board, and pulp and cellulosic nanomaterials 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 pulp, paper, and board and cellulosic nanomaterial samples taken for chemical and physical tests in the laboratory, when a concurrent determination of dry matter content is required. This method is not applicable to the determination of the dry matter content of slush pulp or to the determination of the saleable mass of pulp lots. NOTE 1 ISO 638-2 [1] specifies an oven-drying method for the determination of the dry matter content of suspensions of cellulosic nanomaterials, ISO 287 [2] specifies the determination of the moisture content of a lot of paper and board; ISO 4119 [3] specifies the determination of stock concentration of pulps; the ISO 801 series [4] specifies the determination of the 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; in cases where the sample is filterable without loss of cellulosic solids, ISO 4119 [3] can be used to determine the stock consistency (content of cellulosic material in solid form).