ISO 28641:2018 ゴム配合成分—有機化学物質—一般的な試験方法 | ページ 2

Foreword

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The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives ).

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This document was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 3, Raw materials (including latex) for use in the rubber industry.

This second edition cancels and replaces the first edition (ISO 28641:2010), which has been technically revised.

The main changes compared to the previous edition are as follows:

• updating of the normative references and bibliography;
• deletion of Clause 6 giving the procedure for drying samples, and deletion of all references to Clause 6 in the document;
• modification of the procedure regarding sieve residue in 7.3.5 c), 7.3.5 d), 7.3.5 h);
• the test method for determination of the melting point (7.5), deletion of method B for water‐insoluble and waxy samples; addition of a list of apparatus for the method for vaselines;
• the test method for determination of the density, addition of a method B (constant volume method);
• deletion of Annex A giving examples of sampling apparatus and Annex B giving examples of suitable drying apparatus;
• addition of a new Annex D giving the conversion formulae between density and relative density.

1 Scope

This document specifies sampling and test methods for the determination of the general characteristics of organic chemicals such as accelerators, antidegradants (including wax) and vulcanizing agents (excluding peroxides).

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

No terms and definitions are listed in this document.

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

Bibliography