ISO 16533:2014
(Main)Textiles — Measurement of exothermic and endothermic properties of textiles under humidity change
Textiles — Measurement of exothermic and endothermic properties of textiles under humidity change
ISO 16533:2014 specifies a method for the measurement of exothermic and endothermic properties by moisture absorption and desorption in sheet-like textiles, e.g. fabrics, knit or nonwovens for clothing, bedding, upholstery, and similar textile products.
Textiles — Mesurage des propriétés exothermiques et endothermiques de textiles sous conditions d'humidité changeantes
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INTERNATIONAL ISO
STANDARD 16533
First edition
2014-07-01
Textiles — Measurement of
exothermic and endothermic
properties of textiles under humidity
change
Textiles — Mesurage des propriétés exothermiques et endothermiques
de textiles sous conditions d’humidité changeantes
Reference number
ISO 16533:2014(E)
©
ISO 2014
---------------------- Page: 1 ----------------------
ISO 16533:2014(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2014
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
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 2014 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 16533:2014(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and units . 2
5 Principle . 2
6 Apparatus . 2
7 Reagent . 4
8 Preparation of the humidity control material . 4
9 Test procedure . 5
9.1 Preparation of test specimen . 5
9.2 Preparation of apparatus . 5
9.3 Test specimen mounting . 5
9.4 Measurement of exothermic and endothermic properties . 6
10 Test report . 8
Annex A (informative) Example of hygroscopic and exothermic property test .9
Annex B (informative) Example of hygroemissive and endothermic property test .10
Annex C (informative) Example of practical humidity measurement .11
Bibliography .13
© ISO 2014 – All rights reserved iii
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ISO 16533:2014(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.
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 committee responsible for this document is ISO/TC 38, Textiles.
iv © ISO 2014 – All rights reserved
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ISO 16533:2014(E)
Introduction
The thermal properties of textile materials contribute to a wearer’s physiological comfort, product’s
durability, etc. Hence, there are many kinds of products with specific thermal performances and various
test methods that have been developed and standardized. However, these tests should be conducted in
a certain humidity. The method for thermal properties in elevated or reduced humidity has not been
standardized.
All materials generate heat when absorbing moisture and absorb heat when releasing moisture. The
heat of absorption varies according to the material, for example, the heat of absorption in wool fibre is
much bigger than that in common synthetic fibre. Recently, with this property, some heat-generating
textiles have been developed and applied to various products, such as outdoor wear, sportswear, inner
wear, special working wear, and healthcare wear. Therefore, the test for the hygroscopic and exothermic
properties of textiles is needed for both producers and customers. Despite these needs, accurate and
reliable information about hygroscopic and exothermic properties of textiles cannot be offered because
of the absence of a standard test method.
The exothermic and endothermic properties of textiles under changing conditions of environmental
humidity can be measured with this test method and apparatus proposed in this International Standard.
© ISO 2014 – All rights reserved v
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INTERNATIONAL STANDARD ISO 16533:2014(E)
Textiles — Measurement of exothermic and endothermic
properties of textiles under humidity change
1 Scope
This International Standard specifies a method for the measurement of exothermic and endothermic
properties by moisture absorption and desorption in sheet-like textiles, e.g. fabrics, knit or nonwovens
for clothing, bedding, upholstery, and similar textile products.
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 3696:1987, Water for analytical laboratory use — Specification and test methods
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
exothermic property
property of material whereby it releases heat to the surroundings
3.2
endothermic property
property of material whereby it absorbs heat from the surroundings
3.3
hygroscopic and exothermic property
property of material whereby it generates heat by absorbing moisture and releases the generated heat
to its surroundings where relative humidity changes from low to high over time
3.4
hygroemissive and endothermic property
property of material whereby it loses heat and cools down by releasing moisture through evaporation
to its surroundings where relative humidity changes from high to low over time
© ISO 2014 – All rights reserved 1
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ISO 16533:2014(E)
4 Symbols and units
T is the ambient temperature in a temperature and humidity controlled chamber, in degrees Celsius.
A
RH is the ambient relative humidity in a temperature and humidity controlled chamber, in per cent.
A
RH is the relative humidity in the first constant humidity container, starting humidity, in per cent.
1
RH is the relative humidity in the second constant humidity container, target humidity, in per cent.
2
T is the peak temperature, determined using a temperature sensor with or without the test specimen
peak
mounted on the sensor probe in the second constant humidity container during the hygroscopic and
exothermic property tes
...
DRAFT INTERNATIONAL STANDARD ISO/DIS 16533
ISO/TC 38 Secretariat: JISC
Voting begins on Voting terminates on
2013-04-12 2013-07-12
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION • МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ • ORGANISATION INTERNATIONALE DE NORMALISATION
Textiles — Measurement of exothermic and endothermic
properties of textiles under humidity change
Textiles — Mesurage des propriétés exothermiques et endothermiques de textiles sous conditions d'humidité
changeantes
ICS 59.080.01
To expedite distribution, this document is circulated as received from the committee
secretariat. ISO Central Secretariat work of editing and text composition will be undertaken at
publication stage.
Pour accélérer la distribution, le présent document est distribué tel qu'il est parvenu du
secrétariat du comité. Le travail de rédaction et de composition de texte sera effectué au
Secrétariat central de l'ISO au stade de publication.
THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE
REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION.
© International Organization for Standardization, 2013
---------------------- Page: 1 ----------------------
ISO/DIS 16533
COPYRIGHT PROTECTED DOCUMENT
© ISO 2013
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
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 2013 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/CD 16533
Contents Page
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and Definitions . 1
4 Symbols and units . 1
5 Principle. 2
6 Apparatus . 2
7 Reagent. 4
8 Preparation of the constant humidity containers . 5
9 Test procedure . 5
10 Test report . 9
Annex A (informative) Example of hygroscopic and exothermic property test . 10
Annex B (informative) Example of hygroemissive and endothermic property test . 11
Bibliography . 12
© ISO 2012 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/CD 16533
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 16533 was prepared by Technical Committee ISO/TC 38, Textiles.
© ISO 2012 – All rights reserved iv
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ISO/CD 16533
Introduction
The thermal properties of textile materials contribute to wearer’s physiological comfort, product's durability, etc.
Hence, there are many kinds of products with specific thermal performances and various test methods for
them have been developed and standardized. But these tests should be conducted in certain humidity. The
method for thermal properties in elevated or reduced humidity has not been standardized.
All materials generate heat when absorbing moisture and absorb heat when releasing moisture. The heat of
absorption varies according to material, for example, the heat of absorption in wool fibre is much bigger than
that in common synthetic fibre. With this property, recently, some heat generating textiles have been
developed and applied to various products such as outdoor wear, sport wear, inner wear, special working
wear and health-care wear. Therefore the test for hygroscopic and exothermic property of textiles is needed
for both producers and customers. Despite these needs, the accurate and reliable information about
hygroscopic and exothermic property of textiles cannot be offered by absence of standard test method.
The exothermic and endothermic properties of textiles under the condition that environmental humidity is
changed can be measured with this proposed test method and apparatus.
© ISO 2012 – All rights reserved v
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DIS DRAFT ISO/CD 16533
Textiles — Measurement of exothermic and endothermic
properties of textiles under humidity change
1 Scope
This standard method specifies method for the measurement of exothermic and endothermic properties by
moisture absorption and desorption in sheet-like textiles, e.g. fabrics, knit or nonwovens for clothing, bedding,
upholstery and similar textile products.
2 Normative references
The following referenced documents are indispensable for the application 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.
ISO 3696:1987, Water for analytical laboratory use — Specification and test methods.
ISO 3801:1977, Textiles — Woven fabrics — Determination of mass per unit length and mass per unit area.
3 Terms and Definitions
For the purposes of this standard, the following definitions apply.
3.1
exothermic property
property of material whereby it releases heat to the surroundings
3.2
endothermic property
property of material whereby it absorbs heat from the surroundings
3.3
hygroscopic and exothermic property
property of material whereby it generates heat by absorbing moisture and releases the generated heat to its
surroundings where relative humidity changes from low to high over time.
3.4
hygroemissive and endothermic property
property of material whereby it loses heat and cools down by releasing moisture through evaporation to its
surroundings where relative humidity changes from high to low over time.
4 Symbols and units
T is ambient temperature in temperature and humidity controlled chamber, in degrees Celsius.
A
© ISO 2012 – All rights reserved 1
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ISO/CD 16533
RH is ambient relative humidity in temperature and humidity controlled chamber, in percent.
A
RH is relative humidity in first constant humidity container, starting humidity, in percent.
1
RH is relative humidity in second constant humidity container, target humidity, in percent.
2
T is peak temperature determined using temperature sensor with or without test specimen mounted on
peak
sensor probe in second constant humidity container during hygroscopic and exothermic property test,
in degrees Celsius.
T is bottom temperature determined using temperature sensor with or without test specimen mounted
bottom
on sensor probe in second constant humidity container during hygroemissive and endothermic
property t
...
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