Plastics -- Epoxy resins -- Determination of electrical conductivity of aqueous resin extracts

ISO 21318:2007 specifies a method for the determination of the electrical conductivity of an aqueous extract obtained by extraction of an epoxy resin with water at 95 °C. The method is applicable only to epoxy resins that are in the molten state at the extraction temperature (95 °C). The method is important for epoxy resins which are used as insulation materials for electronic devices. The electrical conductivity of the extract is used as a measure of the concentration of the ionic species in the resin.

Plastiques -- Résines époxy -- Détermination de la conductivité électrique des extraits aqueux de résine

General Information

Status
Published
Publication Date
23-Jan-2007
Current Stage
9093 - International Standard confirmed
Start Date
04-Sep-2020
Ref Project

Buy Standard

Standard
ISO 21318:2007 - Plastics -- Epoxy resins -- Determination of electrical conductivity of aqueous resin extracts
English language
3 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (sample)

INTERNATIONAL ISO
STANDARD 21318
First edition
2007-02-01
Plastics — Epoxy resins — Determination
of electrical conductivity of aqueous
resin extracts
Plastiques — Résines époxy — Détermination de la conductivité
électrique des extraits aqueux de résine
Reference number
ISO 21318:2007(E)
ISO 2007
---------------------- Page: 1 ----------------------
ISO 21318:2007(E)
PDF disclaimer

This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but

shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In

downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat

accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.

Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation

parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In

the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

© ISO 2007

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,

electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or

ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2007 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 21318:2007(E)
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.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International Standards

adopted by the technical committees are circulated to the member bodies for voting. Publication as an

International Standard requires approval by at least 75 % of the member bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 21318 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 12, Thermosetting

materials.
© ISO 2007 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 21318:2007(E)
Introduction

Where epoxy resins are used as insulation for electronic devices, ionic impurities such as chloride, sodium

and catalyst residues present in the epoxy resin can cause failure of the device. Instead of determining these

impurities separately, a test method may be used to evaluate their contents as a whole by measuring the

electrical conductivity of a resin extract obtained by extraction of the resin with water at an elevated

temperature. Because of its practical usage and simplicity, this method is becoming widely used in the quality

control of epoxy resins for electronic insulation applications.
iv © ISO 2007 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 21318:2007(E)
Plastics — Epoxy resins — Determination of electrical
conductivity of aqueous resin extracts
SAFETY STATEME
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.