Textiles -- Test methods for evaluating the electrostatic propensity of fabrics

ISO 18080-1:2015 specifies a test method using corona charging with measurement of the impressed peak voltage and charge decay time on specimens of fabric or all types of composition and construction. The test methods described may not be suitable for evaluating garments and garment materials in relation to safety of personnel and protection of electrostatic discharge sensitive devices.

Textiles -- Méthodes d'essai pour l'évaluation de la propension des étoffes électrostatique

General Information

Status
Published
Publication Date
10-Dec-2015
Technical Committee
Drafting Committee
Current Stage
9093 - International Standard confirmed
Start Date
29-Apr-2021
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ISO 18080-1:2015 - Textiles -- Test methods for evaluating the electrostatic propensity of fabrics
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INTERNATIONAL ISO
STANDARD 18080-1
First edition
2015-12-15
Textiles — Test methods for
evaluating the electrostatic
propensity of fabrics —
Part 1:
Test method using corona charging
Textiles — Méthodes d’essai pour l’évaluation de la propension des
étoffes électrostatique —
Partie 1: Méthode d’essai de charge Corona
Reference number
ISO 18080-1:2015(E)
ISO 2015
---------------------- Page: 1 ----------------------
ISO 18080-1:2015(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
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ISO 18080-1:2015(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 Preparation of specimen .............................................................................................................................................................................. 7

7.1 Sampling ....................................................................................................................................................................................................... 7

7.2 Cleansing of sample ............................................................................................................................................................................ 8

7.2.1 General...................................................................................................................................................................................... 8

7.2.2 Wash by water .................................................................................................................................................................... 8

7.2.3 Dry cleaning ......................................................................................................................................................................... 8

7.3 Conditioning of sample .................................................................................................................................................................... 8

8 Preparation of the test apparatus ....................................................................................................................................................... 8

9 Test method ............................................................................................................................................................................................................... 8

10 Test report ................................................................................................................................................................................................................... 9

Annex A (informative) Interpretation of the test result ................................................................................................................10

Annex B (informative) Round robin test results ...................................................................................................................................11

Annex C (informative) Comparison between IEC 61340-2-1 and this part of ISO 18080 ...........................14

Bibliography .............................................................................................................................................................................................................................16

© ISO 2015 – All rights reserved iii
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ISO 18080-1:2015(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 18080-1:2015(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. Definitive performance requirements

are not given, but guidance on the interpretation of results is given in informative Annex A. The

qualitative interpretation scheme is based on anecdotal experience in industry in controlling clinging,

uncomfortable shocks and attraction of particulate contaminants. Nevertheless, it is provided for

guidance only and users of this International Standard are advised to check its validity for their own

applications.

NOTE IEC 61340-2-1 describes an alternative test method that can be used to determine electrostatic

propensity of fabrics and garments using corona charging.
© ISO 2015 – All rights reserved v
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INTERNATIONAL STANDARD ISO 18080-1:2015(E)
Textiles — Test methods for evaluating the electrostatic
propensity of fabrics —
Part 1:
Test method using corona charging
1 Scope

This part of ISO 18080 specifies a test method using corona charging with measurement of the

impressed peak voltage and charge decay time on specimens of fabric or all types of composition and

construction.

The test methods 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 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
decay time
time for the impressed voltage to decay to a percentage of the peak voltage
3.3
half decay time
HDT
time for the impressed voltage to decay to half of the peak voltage
3.4
corona discharge

electric discharge with slight luminosity produced around a current conductor, without greatly heating

it, and limited to the region surrounding the conductor in which the electric field exceeds a certain value

© ISO 2015 – All rights reserved 1
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ISO 18080-1:2015(E)
3.5
corona charging

charging of test specimens by means of corona discharge created by a sharply pointed electrode

3.6
conductive

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

object are not sufficiently large as to be of practical significance

Note 1 to entry: In general, a conductive material has a resistance below about 10 Ω but different standards may

define different resistance ranges for this term.
3.7
conductive fibre
fibre in which conductive components are included

Note 1 to entry: If conductive components are exposed at the surface, the fibre is called surface

conductive fibre. If the conductive components are completely embedded in non-conductive polymer,

the fibre is called core conductive fibre.
4 Principle

A fabric specimen is charged by corona charging and the peak value of the impressed voltage is

obtained immediately after the application of high voltage is stopped. The impressed voltage on the

specimen decays towards zero, but not necessarily down to zero. The electrostatic propensity of the

test specimen is quantified by determining the peak voltage value and the half decay time, or decay

time to some other percentage.
5 Conditioning and testing atmosphere

Unless otherwise agreed or specified, the atmosphere for conditioning and testing shall be a

temperature of (20 ± 2) °C and a relative humidity of (40 ± 4) %. If a different temperature or humidity

is used for conditioning or testing, record it in the test report.
NOTE The measurements of temperature and humidity are specified in ISO 139.
6 Apparatus
6.1 General

One possible test apparatus is shown below as an example. Other apparatus capable of measuring

impressed peak voltage and charge decay time from corona charged specimens may also be used after

appropriate validation.
6.2 Test apparatus
The apparatus is composed of the following parts.

— Emitter, shown in Figure 1 and Figure 2, a needle type, applied voltage of (−10 ± 1) kV, negative

polarity. When the high voltage is applied to this electrode, corona discharge occurs; this is used to

charge the test specimen.
2 © ISO 2015 – All rights reserved
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Φ1.5±0.1
ISO 18080-1:2015(E)
Key
1 exterior cladding (Polyvinyl chloride)
2 exterior cladding (aluminium)
Figure 1 — Appearance of emi
...

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