ISO 15023-2:2019 塑料 聚乙烯醇（PVAL）材料 第2部分：性能的测定

标准编号：ISO 15023-2:2019

中文名称：塑料 聚乙烯醇（PVAL）材料 第2部分：性能的测定

英文名称：Plastics — Poly(vinyl alcohol) (PVAL) materials — Part 2: Determination of properties

发布日期：2019-02

标准范围

本文件规定了测定聚乙烯醇性能的方法，聚乙烯醇通常由聚醋酸乙烯酯水解制备，其组成包括乙烯醇单体单元和醋酸乙烯酯单体单元。本文件适用于乙烯醇单位含量（水解度）为70 mol%至100 mol%的聚乙烯醇。除了ISO 15023-1（水溶液的水解度和粘度）中规定的指定性质外，本文件还包括许多通常用于指定PVAL材料的其他性质（见表1）。

This document specifies the methods to be used in determining the properties of poly(vinyl alcohol), which is normally prepared by hydrolysis of poly(vinyl acetate) and whose composition comprises vinyl alcohol monomeric units and vinyl acetate monomeric units. This document is applicable to poly(vinyl alcohol) with a vinyl alcohol unit content (degree of hydrolysis) from 70 mol% to 100 mol%.In addition to the designatory properties specified in ISO 15023-1 (degree of hydrolysis and viscosity of an aqueous solution), this document includes a number of other properties which are commonly used to specify PVAL materials (see Table 1).

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