ISO 18080-1:2015

Textiles -- Test methods for evaluating the electrostatic propensity of fabrics -- Part 1: Test method using corona charging

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.

General Information

• Status: Published
• Publication Date: 10-Dec-2015
• ICS: 59.080.30 - Textile fabrics
• Technical Committee: TC 101 - Electrostatics
• Drafting Committee: JWG 14 - TC 101/JWG 14
• Current Stage: PPUB - Publication issued
• Start Date: 31-Dec-2015
• Completion Date: 14-Dec-2015

Overview

ISO 18080-1:2015 specifies a laboratory test method using corona charging to evaluate the electrostatic propensity of textile fabrics. The method measures the impressed peak voltage and charge decay time on fabric specimens of various compositions and constructions. It is intended to characterize tendencies for clinging, shocks and particulate attraction of fabrics, but is not designed to assess garments for personnel safety or protection of electrostatic-discharge‑sensitive (ESD) devices.

Key topics and technical requirements

• Test principle: specimens are corona‑charged by a needle electrode and the peak voltage and voltage decay (e.g., half decay time) are recorded.
• Environmental conditioning: default atmosphere is (20 ± 2) °C and (40 ± 4) % relative humidity; deviations must be recorded.
• Specimen preparation:
  • Cleanse options include washing per ISO 6330 or dry‑cleaning per ISO 3175‑2/‑3.
  • Dry samples 1 h at 70 ± 3 °C, then condition ≥24 h in test atmosphere.
  • Cut five specimens, 45 mm ± 1 mm square.
• Apparatus and setup:
  • Emitter: needle‑type corona electrode, applied voltage −10 kV (negative polarity).
  • Detective electrode: plate field sensor, ~28 mm diameter, 0 to −10 kV range, response <4 ms.
  • Turntable, spacer, metal specimen cover and grounding: all conductive parts grounded with resistance < 10 Ω.
  • Distances: needle tip to specimen cover 18 mm (specimen surface ≈20 mm); detective electrode to cover 13 mm (surface ≈15 mm).
  • Recording device/data acquisition to capture impressed voltage vs. time.
• Procedure highlights: neutralize static on specimens prior to test, apply −10 kV corona, record peak voltage and decay times; detailed steps and reporting requirements in Clauses 7–10.
• Informative annexes: interpretation guidance (Annex A), round‑robin results (Annex B), and comparison with IEC 61340‑2‑1 (Annex C).

Applications and users

ISO 18080-1 is used to:

• Evaluate antistatic properties of textile materials.
• Support material selection and quality control for fabrics intended to minimize clinging, shocks and particulate attraction.
• Compare the effects of cleaning or finishes on electrostatic behavior.

Primary users:

• Textile manufacturers, R&D and quality laboratories.
• Suppliers of workwear and cleanroom textiles for precision technology, biotechnology, food processing and hygiene industries.
• Independent testing labs and standards organizations evaluating fabric electrostatic performance.

Related standards

• ISO 18080 series (Parts 2–4) - alternative mechanical friction test methods.
• ISO 6330, ISO 3175‑2/‑3 - referenced care and cleansing procedures.
• IEC 61340‑2‑1 - alternative corona‑charging method; Annex C provides a comparison.

Keywords: ISO 18080-1, electrostatic propensity, corona charging, textile test method, antistatic fabrics, charge decay time, impressed peak voltage, fabric testing standard.

Standards Content (Sample)

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 2015
© 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
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
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www.iso.org
ii © ISO 2015 – All rights reserved

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
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

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.
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
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

Φ1.5±0.1
Key
1 exterior cladding (Polyvinyl chloride)
2 exterior cladding (aluminium)
Figure 1 — Appearance of emi
...