ISO 4907-2:2023 プラスチック — イオン交換樹脂 — Part 2: 遠心分離による水酸化物の形の陰イオン交換樹脂の水分含有量の測定 | ページ 2

Foreword

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This document was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 5, Physical-chemical properties.

A list of all parts in the ISO 4907 series can be found on the ISO website.

Introduction

Anion exchange resins in hydroxide form have poor thermal stability, so direct drying at high temperatures should be avoided. This document solves this problem by form transition process and conversion.

Formulae and derivations are given in Annex B.

1 Scope

This document specifies test methods by centrifugation of water content of styrene anion exchange resins in hydroxide form.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses: