ISO 3688:2022 纸浆 光学财产测量用实验室薄板的制备

标准编号：ISO 3688:2022

中文名称：纸浆 光学财产测量用实验室薄板的制备

英文名称：Pulps — Preparation of laboratory sheets for the measurement of optical properties

发布日期：2022-12

标准范围

本文件规定了在测量光学特性之前制备实验室片材的两种程序。一种是使用滤纸或金属丝网在Büchner漏斗中制备垫，另一种是在标准片材成型机中制备实验室片材（常规或快速K？然后）。本文件适用于所有木浆和大多数其他类型的纸浆。它不适用于具有非常长纤维的纸浆，例如由未缩短的棉、亚麻和类似材料制成的纸浆，除非它们被缩短至合适的纤维长度（约2？mm）。它不适用于再生纸浆（参见ISO 21993）。它不适用于不透明度测量或光散射和吸收系数的测定。

This document specifies two procedures for the preparation of laboratory sheets prior to measuring optical properties. One is the preparation of pads in a Büchner funnel using a filter paper or a wire screen and the other one is the preparation of laboratory sheets in a standard sheet former (conventional or Rapid K？then).

This document is applicable to all wood pulps and to most other types of pulp.

It is not applicable to pulps with very long fibres, such as those made from unshortened cotton, flax and similar materials, unless they are reduced to a suitable fibre length (about 2 mm) before performing the methods.

It is not applicable to recycled pulps (see ISO 21993).

It is not applicable to opacity measurements or to the determination of light scattering and absorption coefficients.

标准预览图