ISO 9514:2019 塗料とワニス—多成分コーティングシステムのポットライフの決定—サンプルの準備と調整およびテストのガイドライン | ページ 2

Foreword

ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.

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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Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.

For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISO's adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www.iso.org/iso/foreword.html .

This document was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 9, General test methods for paints and varnishes.

This third edition cancels and replaces the second edition (ISO 9514:2005), of which it constitutes a minor revision.

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

• reference to"low temperature" coating systems have been deleted because they are not defined and it is not clear which systems are covered;
• the description of the conditioning chamber (former 6.2) has been deleted;
• the clause (former Clause 10) on precision has been deleted because no precision data on pot life determined by a specific test method are available;
• poly(vinyl butyrate) and alkyd melamines (acid-catalysed) have been deleted from Table A.1;
• the text of the former notes to the principle bave been moved to the new introduction;
• the text has been editorially revised;
• the normative references have been updated;
• the required supplementary information (former Annex A) have been included in the test report.

Introduction

This document specifies the conditions for preparing and storing a sample in order to assess the pot-life. These conditions are near to adiabatic so that they bear a close relationship to those which exist in practice, e.g. mixing fairly large volumes of liquid reactive systems for use.

The pot life is dependent on a variety of properties, depending on the reactive system involved. Because of this variety, the pot-life can only be specified with reference to a particular property. Guidance on the property/ies to be tested for various reactive systems is given in Annex A.

1 Scope

This document specifies a method, carried out under standard conditions, for preparing and storing a sample of a multicomponent coating system and subsequently assessing its pot-life by measuring a particular property/ies.

Reactive systems curing within a short period of time, e.g. 3 h, will have the end of their pot life so near to the gel point that they will need to be tested for that particular property in accordance with ISO 2535.

The method can be carried out either as a pass/fail test by determining the particular property/ies after a specified period of time, or as determination of the pot life by repeating determinations at convenient intervals of time.

This document is not intended for in situ control of products during their application. It is intended to determine"pot life" in the laboratory.

The value obtained from this test method can be subject to modification by suppliers for practical reasons (e.g. starting temperature) when giving advice to users and should then be called the"practical pot life".

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 terms and definitions given in ISO 4618 and the following apply.

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

Bibliography