EN ISO 1889:1997
(Main)Reinforcement yarns - Determination of linear density (ISO 1889:1997)
Reinforcement yarns - Determination of linear density (ISO 1889:1997)
This European Standard specified a method for the determination of the linear density of textile glass, carbon fibre and aramid fibre. It is applicable to all yarns including singles yarns, doubled and cabled, textured yarns, rovings and staple fibre yarns.
Verstärkungsfasern - Bestimmung der Feinheit (ISO 1889:1997)
Diese Internationale Norm legt ein Verfahren zur Bestimmung der Feinheit von Garnen aus Textilglas, Kohlenstoff- und Aramidfasern fest. Sie gilt für alle Garne, d. h. Einfachgarne, ein- und mehrstufige Zwirne, texturierte Garne, Rovings und Stapelfasergarne.
Fils de renfort - Détermination de la masse linéique (ISO 1889:1997)
La présente norme européenne spécifie une méthode de détermination de la masse linéique des fils de verre textile, de carbone et d'aramide. Elle s'applique à tous les fils, c'est-à-dire, les fils simples, les fils retors et cablés, les fils texturés, les stratifils, les fils de verranne.
Preja za ojačenje – Določevanje dolžinske mase (ISO 1889:1997)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 1889:1999
01-maj-1999
3UHMD]DRMDþHQMH±'RORþHYDQMHGROåLQVNHPDVH ,62
Reinforcement yarns - Determination of linear density (ISO 1889:1997)
Verstärkungsfasern - Bestimmung der Feinheit (ISO 1889:1997)
Fils de renfort - Détermination de la masse linéique (ISO 1889:1997)
Ta slovenski standard je istoveten z: EN ISO 1889:1997
ICS:
59.100.01 0DWHULDOL]DRMDþLWHY Materials for the
NRPSR]LWRYQDVSORãQR reinforcement of composites
in general
SIST EN ISO 1889:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 1889:1999
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SIST EN ISO 1889:1999
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SIST EN ISO 1889:1999
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SIST EN ISO 1889:1999
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SIST EN ISO 1889:1999
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SIST EN ISO 1889:1999
INTERNATIONAL IS0
STANDARD 1889
Third edition
1997-05- 15
Reinforcement yarns - Determination of
linear density
Fils de renfort - Dbtermina tion de la masse /in&ye
Reference number
IS0 1889: 1997(E)
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SIST EN ISO 1889:1999
IS0 1889: 1997(E)
Foreword
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 1889 was prepared by Technical Committee
ISOFIC 61, Plastics, Subcommittee SC 13, Composites and reinforcement
fibres.
This third edition cancels and replaces the second edition (IS0 1889:1987),
as well as IS0 10120:1991, of which it constitutes a technical revision.
0 IS0 1997
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 l CH-1211 Geneve 20 l Switzerland
Internet central @ iso.ch
x.400 c=ch; a=400net; p=iso; o=isocs; s=central
Printed in Switzerland
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SIST EN ISO 1889:1999
INTERNATIONAL STANDARD o Iso IS0 1889:1997(E)
Reinforcement yarns - Determination of linear density
1 Scope
This International Standard specifies a method for the determination of the linear density of glass-fibre, carbon-fibre
and aramid-fibre yarns.
It is applicable to all types of yarn, including single yarns, double and cabled yarns, textured yarns, rovings and
staple-fibre yarns.
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 Standards.
IS0 291 :--I), Plastics - Standard atmospheres for conditioning and testing.
IS0 188711995, Textile glass - Determination of combus fib/e-matter con tent.
IS0 3344: 1997, Reinforcement products - Determination of moisture content.
IS0 10548:1994, Carbon fibre - Determination of size con tent.
3 Definition
For the purposes of this International Standard, the following definition applies:
3.1 linear density (of a yarn): The mass per unit length of the yarn, with or without size. The unit generally used is
the tex, which corresponds to 1 g per kilometre of yarn.
4 Principle
A yarn test specimen of known length, with or without size, is weighed and the mass per unit length calculated.
In the case where the yarn must be desized, this is done by extraction and drying (in the case of aramid fibre), by
calcination (in the case of glass fibre) or by extraction or pyrolysis (in the case of carbon fibre).
1) To be published. (Revision of IS0 291:1977)
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SIST EN ISO 1889:1999
0 IS0
IS0 1889: 1997(E)
In the case of carbon-fibre yarns, the linear density of the desized yarn may also be calculated from the linear
density of the sized yarn and the size content determined in accordance with IS0 10548. However, the result
obtained in this way will include a small error due to the inherent error involved in determining the size content.
5 Apparatus
5.1 Apparatus for determinations on sized yarn
Spool, preferably with a circumference of 1 m. The spool is generally fitted with a traversing system to wind
5.1.1
the yarn in thin layers. It may also include a tensioning system to tension the yarn while a test specimen is being
taken.
The spool shall be calibrated in such a way that, for all specimen lengths, the actual length obtained is accurate to
+ 0,3 %. The calibration of the spool shall take into consideration the required specimen length, the type of yarn and
the type of material. This calibration shall be carried out with a particular tension in the yarn, and the operator shall
be made aware of this tension.
For specimens s 5 m in length (in the case of certain carbon and aramid yarns and for glass rovings of 2 000 tex or
greater), replace the wrap reel by other equipment enabling specimens to be cut to the required length with the
required accuracy. A sketch of such equipment is shown in figure 1.
Guide bar
Cutter blade
f- \ I
2,50 m or less, depending on specimen Length required
-
Figure 1 - Equipment for cutting test specimens up to 5 m in length
Specimen holder, to hold the specimen before weighing and, if necessary, to hold the specimen in an oven
5.1.2
and/or a muffle furnace.
5.1.3 Forced-circulation oven, with an air-change rate of 20 to 50 times per hour and capable of maintaining a
temperature of 105 “C + 3 “C.
5.1.4 Analytical balance, accurate to 0,l mg.
5.1.5 Suitable tool, e.g. scissors or knife.
5.1.6 Stoppered weighing bottle, for weighing aramid yarn.
Desiccator, containing a suitable drying agent (e.g. silica gel).
5.1.7
5.1.8 Stainless-steel tweezers, for handling the specimens
5.2 Additional apparatus for determinations on desized yarn
5.2.1 For glass fibre
Refel to IS0 1887, but essentially: muffle furnace, capable of maintaining a temperature of 625 “C + 20 “C.
5.2.2 For carbon fibre
Refer to IS0 10548, but essentially: Soxhlet extractor (method A), or pyrolysis equ
...
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