EN ISO 3386-2:1998

SLOVENSKI STANDARD
01-maj-2000
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Flexible cellular polymeric materials - Determination of stress-strain characteristics in
compression - Part 2: High-density materials (ISO 3386-2:1997)
Polymere Materialien - Bestimmung der Druckspannungs-Verformungseigenschaften -
Teil 2: Materialien mit hoher Dichte (ISO 3386-2:1997)
Matériaux polymeres alvéolaires souples - Détermination de la caractéristique de
contrainte-déformation relative en compression - Partie 2: Matériaux a masse volumique
élevée (ISO 3386-2:1997)
Ta slovenski standard je istoveten z: EN ISO 3386-2:1998
ICS:
83.100 Penjeni polimeri Cellular materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

IS0
INTERNATIONAL
3386-2
STANDARD
Second edition
1997-06-I 5
Flexible cellular polymeric materials -
Determination of stress-strain
characteristics in compression -
Part 2:
High-density materials
Ma tbriaux polymtkes alv6olaires souples - Dbtermina tion de
la caractbristique de contrainte-dkformation relative en compression -
.
Partie 2: Matkriaux & masse volumique kIevhe
Reference number
IS0 3386-2: 1997(E)
IS0 3386=2:1997(E)
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards bodies (IS0 member bodies). The work of preparing International
Standards is normally carried out through IS0 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. IS0 collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical
standardization.
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.
International Standard IS0 3386-2 was prepared by Technical Committee lSO/TC 45,
Rubber and rubber products.
This second edition cancels and replaces the first edition (IS0 3386-2:i 984), of which
it constitutes a minor revision (in clause 4, second paragraph, the accuracy required for
measurement of the test piece thickness has been changed from 0,02 mm to 0,i mm).
0 IS0 1997
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Printed in Switzerland
ii
IS0 3386-2: 1997(E)
INTERNATIONAL STANDARD @ IS0
Flexible cellular polymeric materials - Determination
of stress-strain characteristics in compression -
Part 2:
High-density materials
1 Scope
This part of IS0 3386 specifies a method for the determination of the compression
stress-strain characteristics of flexible cellular polymeric materials of density greater than
250 kg/m3.
The compression stress-strain characteristic is a measure of the load-bearing properties
of the material, though not necessarily of its capacity to sustain a long-term load.
The compression stress-strain characteristic differs from the indentation hardness
characteristics (as determined in accordance with IS0 2439) which are known to be
influenced by the thickness and the tensile properties of the flexible cellular material
under test, the shape of the compression piate, and the shape and size of the test piece.
IS0 3386-l specifies a method for low-density flexible materials, and differs from Part 2 in
the following ways:
Part 1 is concerned with materials of density up to 250 kg/m’, whilst Part 2 is
mainly concerned with materials of density above 250 kg/m3;
compression stress values have been deleted from Part 2;
Part 2 does not allow the use of a cylindrical test piece.
This part of IS0 3386 is a general method for testing denser flexible cellular materials
(i.e. expanded cellular rubbers), measurements being made on one of more points on the
steeply rising part of the stress-strain curve. The shape factor of the test piece is
important and comparative test results can only be obtained on test pieces having the
same shape factor.
NOTE 1 For comparison purposes, the method may be used for material of 150 kg/m3 density or greater.
@ IS0
IS0 3386-2: 1997(E)
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
IS0 maintain registers of currently valid International Standar
...