Textiles -- Test methods for evaluating the electrostatic propensity of fabrics -- Part 4: Test method using horizontal mechanical friction

ISO 18080-4:2015 specifies a test method using horizontal mechanical friction with measurement of friction-charged electrostatic potential on specimens of fabric and the time for that potential to decay. The test method is suitable for fabrics of all types of composition and construction that are capable of withstanding frictional charging. Some fabrics, e.g. fabrics of low strength or loose construction, may not be physically capable of withstanding the manual friction used in this test method or may give false results. In such cases, the test method described in ISO 18080-1 can be used to evaluate electrostatic propensity. The test method described may not be suitable for evaluating garments and garment materials in relation to safety of personnel and protection of electrostatic discharge sensitive devices.

General Information

Status
Published
Publication Date
10-Dec-2015
Technical Committee
Current Stage
PPUB - Publication issued
Completion Date
14-Dec-2015
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ISO 18080-4:2015 - Textiles -- Test methods for evaluating the electrostatic propensity of fabrics -- Part 4: Test method using horizontal mechanical friction
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INTERNATIONAL ISO
STANDARD 18080-4
First edition
2015-12-15
Textiles — Test methods for
evaluating the electrostatic
propensity of fabrics —
Part 4:
Test method using horizontal
mechanical friction
Textiles — Méthodes d’essai pour l’évaluation de la propension des
étoffes électrostatique —
Partie 4: Méthode d’essai de friction mécanique horizontale
Reference number
ISO 18080-4:2015(E)
ISO 2015
---------------------- Page: 1 ----------------------
ISO 18080-4:2015(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2015, Published in Switzerland

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

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ii © ISO 2015 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 18080-4:2015(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Principle ........................................................................................................................................................................................................................ 2

5 Conditioning and testing atmosphere ............................................................................................................................................ 2

6 Apparatus ..................................................................................................................................................................................................................... 2

7 Movement of the test apparatus ........................................................................................................................................................... 4

8 Preparation of specimen .............................................................................................................................................................................. 5

8.1 Sampling ....................................................................................................................................................................................................... 5

8.2 Cleansing of sample ............................................................................................................................................................................ 5

8.2.1 General...................................................................................................................................................................................... 5

8.2.2 Wash by water .................................................................................................................................................................... 5

8.2.3 Dry cleaning ......................................................................................................................................................................... 5

8.3 Conditioning of sample .................................................................................................................................................................... 5

9 Test procedure ........................................................................................................................................................................................................ 6

10 Test report ................................................................................................................................................................................................................... 7

Annex A (informative) Test result ............................................................................................................................................................................ 8

Bibliography .............................................................................................................................................................................................................................10

© ISO 2015 – All rights reserved iii
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ISO 18080-4:2015(E)
Foreword

ISO (the International Organization for Standardization) and IEC (the International Electrotechnical

Commission) are worldwide federations of national standards bodies (ISO member bodies and IEC

national committees). The work of preparing International Standards is normally carried out through

ISO and IEC 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 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).

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. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

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

constitute an endorsement.

For an explanation on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO’s adherence to the WTO principles in the Technical

Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information

The committees responsible for this document are Technical Committee ISO/TC 38, Textiles and

IEC/TC 101 Electrostatics as JWG 26, Antistatic, in the lead of ISO/TC 38.

ISO 18080 consists of the following parts, under the general title Textiles — Test methods for evaluating

the electrostatic propensity of fabrics:
— Part 1: Test method using corona charging
— Part 2: Test method using rotary mechanical friction
— Part 3: Test method using manual friction
— Part 4: Test method using horizontal mechanical friction
iv © ISO 2015 – All rights reserved
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ISO 18080-4:2015(E)
Introduction

In addition to safety hazards and damage or disruption of sensitive electronic devices and systems

which are covered by other International Standards, electrostatic charging of clothing can also cause

problems of clinging, uncomfortable shocks and the attraction of airborne dust and other contaminants.

Clothing designed to avoid airborne dust contamination is required in a number of expanding industries

relating to precision technology, biotechnology, food, hygiene, etc. It is also generally desirable to have

clothing that does not cling or cause uncomfortable shocks.

Test methods are required to evaluate the propensity of fabrics used to make clothing designed to avoid

problems associated with electrostatic charging. Test methods are specified in a number of National and

International Standards including those published by ISO and IEC. However, the relationship between

measurable electrostatic properties and end use performance is rather complex and may require a

combination of different test methods depending on application.

The test method described in this International Standard is one of a number of test methods that can be

used to evaluate the electrostatic propensity of textile materials.

The test method is based on frictional charging which is one of the main charging mechanisms present

in practical wearing conditions. Although the methods described in ISO 18080-2 and ISO 18080-3 also

use frictional charging, the results may not be directly comparable in absolute terms because of the

different ways in which friction is applied.
© ISO 2015 – All rights reserved v
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INTERNATIONAL STANDARD ISO 18080-4:2015(E)
Textiles — Test methods for evaluating the electrostatic
propensity of fabrics —
Part 4:
Test method using horizontal mechanical friction
1 Scope

This part of ISO 18080 specifies a test method using horizontal mechanical friction with measurement

of friction-charged electrostatic potential on specimens of fabric and the time for that potential to decay.

The test method is suitable for fabrics of all types of composition and construction that are capable of

withstanding frictional charging.

Some fabrics, e.g. fabrics of low strength or loose construction, may not be physically capable of

withstanding the manual friction used in this test method or may give false results. In such cases, the

test method described in ISO 18080-1 can be used to evaluate electrostatic propensity.

The test method described may not be suitable for evaluating garments and garment materials in

relation to safety of personnel and protection of electrostatic discharge sensitive devices.

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO 105-F01, Textiles — Tests for colour fastness — Part F01: Specification for wool adjacent fabric

ISO 105-F02, Textiles — Tests for colour fastness — Part F02: Specification for cotton and viscose

adjacent fabrics

ISO 3175-2, Textiles — Professional care, drycleaning and wetcleaning of fabrics and garments — Part 2:

Procedure for testing performance when cleaning and finishing using tetrachloroethene

ISO 3175-3, Textiles — Professional care, drycleaning and wetcleaning of fabrics and garments — Part 3:

Procedure for testing performance when cleaning and finishing using hydrocarbon solvents

ISO 6330, Textiles — Domestic washing and drying procedures for textile testing
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
antistatic

property of a material that reduces its propensity to acquire electrostatic charges or allows electrostatic

charges to dissipate quickly
3.2
conductive

providing a sufficiently high conductivity so that potential differences over any parts of a material or

object are not sufficiently large to be of practical significance
© ISO 2015 – All rights reserved 1
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ISO 18080-4:2015(E)
3.3
friction-charged electrostatic potential

potential generated on a material by friction with another or same material obtained as voltage

3.4
decay time
time for the impressed voltage to decay to a percentage of the peak voltage
3.5
half decay time
time fo
...

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