ISO 26842-1:2013
(Main)Adhesives — Test methods for the evaluation and selection of adhesives for indoor wood products — Part 1: Resistance to delamination in non-severe environments
Adhesives — Test methods for the evaluation and selection of adhesives for indoor wood products — Part 1: Resistance to delamination in non-severe environments
ISO 26842-1:2013 gives guidelines to select, by means of delamination-resistance tests, adhesive/wood combinations in non-severe environments in which the products are not exposed to extreme changes in temperature and humidity. A series of exposure cycles at various temperature and humidity values is provided to verify that the adhesive selected, or a product bonded with the adhesive, meets the necessary requirements for resistance to delamination.
Adhésifs — Méthodes d'essai pour l'évaluation et la sélection des adhésifs destinés aux produits en bois pour l'usage intérieur — Partie 1: Résistance à la délamination dans des environnements non sévères
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 26842-1
Second edition
2013-06-01
Adhesives — Test methods for the
evaluation and selection of adhesives
for indoor wood products —
Part 1:
Resistance to delamination in non-
severe environments
Adhésifs — Méthodes d’essai pour l’évaluation et la sélection des
adhésifs destinés aux produits en bois pour l’usage intérieur —
Partie 1: Résistance à la délamination dans des environnements non
sévères
Reference number
ISO 26842-1:2013(E)
©
ISO 2013
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ISO 26842-1:2013(E)
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© ISO 2013
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ii © ISO 2013 – All rights reserved
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ISO 26842-1:2013(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Principle . 1
4 Apparatus . 2
5 Specimens . 2
5.1 Preparation and number . 2
5.2 Conditioning . 2
6 Delamination-resistance grades . 3
7 Delamination-resistance tests . 3
8 Procedure. 3
9 Assessment of the delamination-resistance grade chosen . 4
10 Test report . 4
Annex A (informative) Report form . 6
Bibliography . 7
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ISO 26842-1:2013(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. 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. 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.
The committee responsible for this document is ISO/TC 61, Plastics, Subcommittee SC 11, Products.
This second edition replaces the first edition (ISO 26842-1:2009), of which it constitutes a minor revision.
ISO 26842 consists of the following parts, under the general title Adhesives — Test methods for the
selection and evaluation of adhesives for indoor wood products:
— Part 1: Resistance to delamination in non-severe environments
— Part 2: Resistance to delamination in severe environments
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INTERNATIONAL STANDARD ISO 26842-1:2013(E)
Adhesives — Test methods for the evaluation and selection
of adhesives for indoor wood products —
Part 1:
Resistance to delamination in non-severe environments
SAFETY STATEMENT — Persons using this document should be familiar with normal laboratory
practice, if applicable. This document does not purport to address all of the safety problems, if
any, associated with its use. It is the responsibility of the user to establish appropriate safety and
health practices and to ensure compliance with any regulatory conditions.
It is recognized that some of the materials permitted in this document might have a negative
environmental impact. As technological advances lead to more acceptable alternatives for such
materials, they will be eliminated to the greatest extent possible.
At the end of the test, care should be taken to dispose of all waste in an appropriate manner in
accordance with local regulations.
1 Scope
This part of ISO 26842 gives guidelines to select, by means of delamination-resistance tests,
adhesive/wood combinations in non-severe environments, in which the products are not exposed to
extreme changes in temperature and humidity.
A series of exposure cycles at various temperature and humidity values is provided to verify that
the adhesive selected, or a product bonded with the adhesive, meets the necessary requirements for
resistance to delamination.
This part of ISO 26842 is intended to help the user not only to select a suitable adhesive, but also to
evaluate adhesives and adhesively bonded wood products.
NOTE When actual wood products are tested using this method, the test results might not be comparable
because the test laboratory will not normally have had adequate control over the way the product was assembled.
This part of ISO 26842 is not intended for use in the qualification of structural components.
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 6238, Adhesives — Wood-to-wood adhesive bonds — Determination of shear strength by compressive loading
ISO 9424, Wood-based panels — Determination of dimensions of test pieces
ISO 16999, Wood-based panels — Sampling and cutting of test pieces
3 Principle
Test specimens or actual products that have been bonded with the test adhesive are placed in chambers
at a specified temperature and humidity for a length of time and/or number of cycles depending on the
grade of resistance to delamination under consideration. On completion of this exposure, the length of
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ISO 26842-1:2013(E)
any delamination at the bond line is determined as a percentage of the overall length. If the length of
delamination does not exceed 10 %, the adhesive can be certified as complying, under the test conditions
used, with the requirements of the grade of resistance to delamination under consideration.
4 Apparatus
NOTE Apparatus that includes the features of all the chambers specified in 4.1 to 4.4, might be available, in
which case it will not be necessary to have one of each and also air
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