SIST EN ISO 1874-2:1999

SLOVENSKI STANDARD
SIST EN ISO 1874-2:1999
01-maj-1999
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Plastics - Polyamide (PA) moulding and extrusion materials - Part 2: Preparation of test
specimens and determination of properties (ISO 1874-2:1995)
Kunststoffe - Polyamid (PA) Formmassen für das Spritzgießen und die Extrusion - Teil 2:
Herstellung von Probekörpern und Bestimmung von Eigenschaften (ISO 1874-2:1995)
Plastiques - Matériaux polyamides (PA) pour moulage et extrusion - Partie 2: Préparation
des éprouvettes et détermination des propriétés (ISO 1874-2:1995)
Ta slovenski standard je istoveten z: EN ISO 1874-2:1995
ICS:
83.080.20 Plastomeri Thermoplastic materials
SIST EN ISO 1874-2:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 1874-2:1999

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SIST EN ISO 1874-2:1999

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SIST EN ISO 1874-2:1999

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SIST EN ISO 1874-2:1999
INTERNATIONAL ISO
STANDARD 1874-2
Second edition
1995-12-15
Plastics - Polyamide (PA) moulding and
extrusion materials -
Part 2:
Preparation of test specimens and
determination of properties
Plas tiques - Mathiaux polyamides (PA) pour moulage et extrusion -
Partie 2: Prhpara tion des kprouve ttes et dktermina tion des propribtks
Reference number
ISO 1874-2:1995(E)

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SIST EN ISO 1874-2:1999
ISO 187402:lSS5(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. Esch 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 patt in the work. ISO
collaborates closely with the International Electrotechnical Commission
(1 EC) 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 ISO 18742 was prepared by Technical Committee
lSO/TC 61, Plastics, Subcommittee SC 9, Thermoplastic materials.
This second edition cancels and replaces the first edition
an includes the following changes:
(ISO 187421987) d
- the title has been modified in Order to include copolymers;
- the Standard SC 9 fram e text has bee n used, and a ccordi ngly the for-
mat differs from that of the fi rst editio
n;
- additional Polyamide types, PA 46 and PA NDT/INDT, have been added
and the moulding conditions Iisted in a new table;
- the Iist of properties and test conditions (table 2) has been revised in
accordance with ISO 10350.
Parts, un der
ISO 1874 consists of the followi the ge neral title
Kl
Plastics - Polyamide (PA) moulding and extrusion ma terials:
- Part 7: Designa tion
- Part 2: Preparation of test specimens and determination of proper-
ties
0 ISO 1995
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronie or mechanical, including photocopying and
microfilm, without Permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-l 211 Geneve 20 l Switzerland
Printed in Switzerland

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SIST EN ISO 1874-2:1999
INTERNATIONAL STANDARD 0 60 ISO 1874=2:1995(E)
Plastics - Polyamide (PA) moulding and extrusion
materials -
Part 2:
Preparation of test specimens and determination of
properties
2 Normative references
1 Scope
The following Standards contain provisions which,
through reference in this text, constitute provisions
of this part of ISO 1874. At the time of publication, the
This part of ISO 1874 specifies the methods of prep-
editions indicated were valid. All Standards are subject
aration of test specimens and the test methods to be
to revision, and Parties to agreements based on this
used in determining the properties of Polyamide
part of ISO 1874 are encouraged to investigate the
moulding and extrusion materials. Requirements for
possibility of applying the most recent editions of the
handling test material and for conditioning both the
Standards indicated below. Members of IEC and ISO
test material before moulding and the specimens be-
maintain registers of currently valid International
fore testing are given here.
Standards.
Procedures and conditions for the preparation of test
ISO 62: 1980, Plastics - Determination of water ab-
specimens and procedures for measuring properties
sorp tion.
of the materials from which these specimens are
made are given. Properties and test methods which
ISO 75-1: 1993, Plastics - Determination of temper-
are suitable and necessary to characterize Polyamide
ature of deflection under load - Part 7: General fest
moulding and extrusion materials are listed.
method.
The properties have been selected from the general
ISO 75-2: 1993, Plastics - Determination of temper-
test methods in ISO 10350. Other test methods in
ature of deflection under load - Part 2: Plastics and
wide use for or of particular significance to these
ebonite.
moulding and extrusion materials are also included in
this part of ISO 1874, as are the designatory proper-
ISO 179:1993, Plastics - Determination of Charpy
ties found in part 1: viscosity number and tensile
impact strength.
modulus of elasticity.
ISO 180: 1993, Plastics - Determination of Izod im-
In Order to obtain reproducible and comparable test
patt strength.
results, it is necessary to use the methods of prepa-
ration and conditioning, the specimen dimensions and ISO 291: 1977, Plastics
- Standard atmospheres for
the test procedures specified herein. Values deter-
conditioning and testing.
mined will not necessarily be identical to those ob-
tained using specimens of different dimensions or ISO 294: 1995, Plastics - Injection moulding of test
prepared using different procedures. specimens of thermoplastic materials.
1

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SIST EN ISO 1874-2:1999
0 ISO
ISO 1874=2:1995(E)
IEC 243-1 :1988, Methods of test for electric strength
ISO 307:1994, Plastics - Polyamides - Determi-
of solid insula ting materials - Part 1: Tests at power
nation of viscosity number.
frequencies.
ISO 527-1:1993, Plastics - Determination of tensile
IEC 250: 1969, Recommended methods for the deter-
properties - Part 1: General principles.
mination of the permittivity and dielectric dissipation
ISO 527-2:1993, Plastics - Determination of tensile factor of electrical insulating materials at power, audio
Part 2: Test conditions for moulding and
properties - and radio frequencies including metre wavelengths.
extrusion plas tics.
IEC 296:1982, Specification for unused mineral oils
ISO 899-1 :1993, Plastics - Determination of creep for transformers and switchgear.
behaviour - Part 1: Tensile creep.
3 Preparation of test specimens
ISO 960: 1988, Plastics - Polyamides (PA) - Deter-
mination of water content.
The specimens shall be prepared by injection mould-
ing from dry granules.
ISO 11 IO:1 995, Plastics - Polyamides - Acceler-
ated conditioning of test specimens. lt is essential that specimens are always prepared by
the same procedure using the Same processing con-
- Methods for determining
ISO 1183:1987, Plastics
ditions.
the density and relative density of non-cellular
The material shall be kept in moisture-proof Containers
plastics.
until it is required for use.
ISO 1210:1992, Plastics - Determination of the
Moisture content of filled or reinforced materials shall
burning behaviour of horizontal and vertical specimens
be expressed as a percentage of the total mass of the
in contact with a small-flame ignition Source.
compound.
- Polyamide (PA) mould-
ISO 1874-1: 1992, Plastics
ing and extrusion materials - Part ? : Designation. 3.1 Treatment of the material before
moulding
ISO 3146:1985, Plastics - Determination of melting
behaviour (melting temperature or melting range) of Before processing, the material Sample shall have
semi-crystalline polymers.
reached room temperature.
Before processing, the moisture content of the ma-
ISO 3167:1993, Plastics - Multipurpose test speci-
terial Sample shall not exceed 0,2 % (m/m) in the case
mens.
of PA having a viscosity number < 200 ml/g, and not
exceed 0,l % (m/m) in the case of PA having a vis-
ISO 3451-4: 1986, Plastics - Determination of ash -
Part 4: Polyamides. cosity number > 200 ml/g. For PA46 and
PANDTIINDT, the moisture content shall be less than
ISO 8256:
...