prEN ISO 9773
(Main)Plastics - Determination of burning behaviour of thin flexible vertical specimens in contact with a small-flame ignition source (ISO/DIS 9773:2024)
Plastics - Determination of burning behaviour of thin flexible vertical specimens in contact with a small-flame ignition source (ISO/DIS 9773:2024)
Kunststoffe - Bestimmung des Brandverhaltens von dünnen, biegsamen, vertikal ausgerichteten Probekörpern in Kontakt mit einer kleinen Zündquelle (ISO/DIS 9773:2024)
Plastiques - Détermination du comportement au feu d'éprouvettes minces verticales souples au contact d'une petite flamme comme source d'allumage (ISO/DIS 9773:2024)
Polimerni materiali - Določanje obnašanja pri gorenju pokončno postavljenih, tankih upogljivih preskušancev pri stiku z majhnim plamenom (ISO/DIS 9773:2024)
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Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2024
Polimerni materiali - Določanje obnašanja pri gorenju pokončno postavljenih,
tankih upogljivih preskušancev pri stiku z majhnim plamenom (ISO/DIS 9773:2024)
Plastics - Determination of burning behaviour of thin flexible vertical specimens in
contact with a small-flame ignition source (ISO/DIS 9773:2024)
Kunststoffe - Bestimmung des Brandverhaltens von dünnen, biegsamen, vertikal
ausgerichteten Probekörpern in Kontakt mit einer kleinen Zündquelle (ISO/DIS
9773:2024)
Plastiques - Détermination du comportement au feu d'éprouvettes minces verticales
souples au contact d'une petite flamme comme source d'allumage (ISO/DIS 9773:2024)
Ta slovenski standard je istoveten z: prEN ISO 9773
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
83.080.01 Polimerni materiali na Plastics in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT INTERNATIONAL STANDARD
ISO/DIS 9773
ISO/TC 61/SC 4 Secretariat: BSI
Voting begins on: Voting terminates on:
2024-01-17 2024-04-10
Plastics — Determination of burning behaviour of thin
flexible vertical specimens in contact with a small-flame
ignition source
Plastiques — Détermination du comportement au feu d'éprouvettes minces verticales souples au contact
d'une petite flamme comme source d'allumage
ICS: 13.220.40; 83.080.01
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
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NOT BE REFERRED TO AS AN INTERNATIONAL
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NATIONAL REGULATIONS.
ISO/DIS 9773:2024(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
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NOTIFICATION OF ANY RELEVANT PATENT
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PROVIDE SUPPORTING DOCUMENTATION. © ISO 2024
ISO/DIS 9773:2024(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 9773
ISO/TC 61/SC 4 Secretariat: BSI
Voting begins on: Voting terminates on:
Plastics — Determination of burning behaviour of thin
flexible vertical specimens in contact with a small-flame
ignition source
Plastiques — Détermination du comportement au feu d'éprouvettes minces verticales souples au contact
d'une petite flamme comme source d'allumage
ICS: 13.220.40; 83.080.01
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
© ISO 2024
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
NOT BE REFERRED TO AS AN INTERNATIONAL
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NATIONAL REGULATIONS.
Website: www.iso.org ISO/DIS 9773:2023(E)
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NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
ii
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023
ISO/DIS 9773:2023(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Significance of test .2
6 Apparatus and materials .3
7 Test specimens . 4
8 Conditioning . 5
9 Test procedures . 5
10 Expression of results . 6
11 Precision . 6
12 Test report . 7
Annex A (informative) Classification system for determining the combustibility of vertical
flexible test specimens using a 20 mm flame source . 8
iii
ISO/DIS 9773:2023(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 World Trade Organization (WTO) principles in
the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html. The
committee responsible for this document is Technical Committee ISO/TC 61, Plastics, Subcommittee
SC 4, Burning behaviour.
This third edition cancels and replaces the second edition (ISO 9773:1998) which has been technically
revised.
The main changes compared to the previous edition are as follows:
— The required light level in the chamber has been added.
— Informations on conditioning, laboratory and timing have been amended
— Conditioning of cotton prior to testing has been added.
— Information on specimen thickness has been amended.
— Information on retesting has been amended.
— Mandatory information is provided throughout the standard.
— Referenced standards have been added as normative references.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
Annex A of this International Standard is for information only.
iv
DRAFT INTERNATIONAL STANDARD ISO/DIS 9773:2023(E)
Plastics — Determination of burning behaviour of thin
flexible vertical specimens in contact with a small-flame
ignition source
1 Scope
1.1 This International Standard specifies a small- scale laboratory screening procedure for comparing
the relative burning behaviour of vertically oriented thin and relatively flexible plastics specimens
exposed to a low-energy-level flame ignition source. These specimens cannot be tested using method B
of IEC 60695-11-10 since they distort or shrink away from the applied flame source without igniting.
1.2 This method of test determines the afterflame and afterglow times of specimens.
1.3 The classification system described in Annex A is intended for quality control and the preselection
of component materials for products. The classification established by this method of test is applicable
only to the material used for the specimens.
NOTE Test results are influenced by material components, e.g. pigments, fillers, concentrations of fire
retardants.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions
of this International Standard. At the time of publication, the editions indicated were valid. All standards
are subject to revision, and parties to agreements based on this International Standard are encouraged
to investigate the possibility of applying the most recent editions of the standards indicated below.
Members of IEC and 1SO maintain registers of currently valid International Standards.
ISO 845:2006, Cellular plastics and rubbers — Determination of apparent density
ISO 1043-1:2011, Plastics — Symbols and abbreviated terms — Part 1: Basic polymers and their special
characteristics
ISO 5725-2:1994, Accuracy (trueness and precision) of measurement methods and results — Part 2: Basic
method for the determination of repeatability and reproducibility of a standard measurement method
ISO 10093:2020, Plastics — Fire tests — Standard ignition sources
ISO 13943, Fire safety — Vocabulary
IEC 60695-11-4, Fire hazard testing — Part 11-4: Test flames — 50 W flame — Apparatus and
confirmational test method
IEC 69695-11-10:2013, Fire hazard testing - Part 11-10: Test flames - 50 W horizontal and vertical flame
test methods
3 Terms and definitions
For the purposes of this International Standard, the terms and definitions given in ISO 13943 and the
following definitions apply.
ISO/DIS 9773:2023(E)
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
afterflame
flame that persists after the ignition source has been removed. (Source ISO 13943)
3.2
afterflame time
length of time for which an afterflame persists under specified conditions (Source ISO 13943)
3.3
afterglow
persistence of glowing combustion after both removal of the ignition source and the cessation of any
flaming combustion (Source ISO 13943)
3.4
afterglow time
length of time for which an afterglow persists under specified conditions. (Source ISO 13943)
4 Principle
A test specimen having a nearly cylindrical form is supported vertically by one end and the free end
is exposed to two successive applications of a specified gas flame. The burning behaviour of the test
specimen is assessed by measuring the afterflame and/or afterglow time,
5 Significance of test
5.1 Tests made on a material under the conditions specified in this standard can be of considerable
value when comparing the relative burning behaviour of different materials, controlling manufacturing
processes or assessing any change in burning characteristics prior to, or during, use. The results
obtained from this method are dependent upon the shape, orientation and insulation of the test
specimen and the conditions of ignition. Correlation with performance under actual service conditions
...
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