EN ISO 176:2005
(Main)Plastics - Determination of loss of plasticizers - Activated carbon method (ISO 176:2005)
Plastics - Determination of loss of plasticizers - Activated carbon method (ISO 176:2005)
ISO 176:2005 specifies two empirical methods for the quantitative determination of the loss of mass from a plastic material under defined conditions of rime and temperature, in the presence of activated carbon.
Method A -- The test specimens are in direct contact with the carbon; this method is particularly useful for materials that have to be tested at relatively low temperatures because they flow at higher temperatures.
Method B -- The test specimens are placed in wire cages that prevent direct contact between the test specimens and the carbon.
These methods apply, in particular, to the quantitative determination of the loss on heating of plasticizers from plasticized plastic materials, in which case it is generally assumed that no significant amounts of other volatile materials are present. They are empirical test methods, suitable only for a rather rapid comparison of the losses of plasticizers or, in general, of volatile compounds, from different plastics.
ISO 176:2005 also applies to the comparison of different types of plasticizers; in this case standard compounds should be prepared, on the basis of a well characterized resin, with known ratios of resin to plasticizer.
Kunststoffe - Bestimmung der Weichmacherabgabe - Aktivkohleverfahren (ISO 176:2005)
Diese Internationale Norm legt zwei empirische Verfahren für die quantitative Bestimmung des Masseverlusts bei einem Kunststoff unter festgelegten Zeit- und Temperaturbedingungen in Gegenwart von Aktivkohle fest.
Die Verfahren werden besonders für die quantitative Bestimmung der Weichmacherabgabe aus weichmacherhaltigen Kunststoffen beim Erwärmen angewendet, wobei allgemein angenommen wird, dass keine bedeutenden Mengen von anderen flüchtigen Stoffen anwesend sind.
Diese Prüfverfahren sind empirisch und nur für einen relativ schnellen Vergleich der Abgabe von Weichmachern oder im Allgemeinen von flüchtigen Verbindungen aus unterschiedlichen Kunststoffen geeignet.
Sie können auch zum Vergleich unterschiedlicher Weichmacherarten angewendet werden; in diesem Fall sollten Standardformmassen aus einem definiertem Harz mit bekannten Verhältnissen von Harz zu Weichmacher hergestellt werden.
ANMERKUNG Diese Vergleiche sind nur bei Probekörpern gleicher Dicke möglich. Wenn angenommen werden kann, dass der Feuchtegehalt von Probekörpern, die der Prüfbehandlung ausgesetzt wurden, nach erneuter Konditionierung der Gleiche ist wie nach der ursprünglichen Konditionierung, kann der Einfluss von Feuchtigkeit vernachlässigt werden.
Es sind zwei Verfahren festgelegt:
- Verfahren A: Die Probekörper stehen in direktem Kontakt mit der Kohle; das Verfahren ist besonders für Werkstoffe geeignet, die bei relativ niedrigen Temperaturen geprüft werden müssen, weil sie sich bei höheren Temperaturen plastisch verformen.
- Verfahren B: Die Probekörper werden in Drahtkörbe gegeben, die den direkten Kontakt zwischen den Probekörpern und der Aktivkohle verhindern.
Matières plastiques - Détermination des pertes en plastifiants - Méthode au charbon actif (ISO 176:2005)
L'ISO 176:2005 spécifie deux méthodes empiriques de détermination quantitative de la perte de masse affectant une matière plastique, dans des conditions données de température et de temps, en présence de charbon actif.
Deux méthodes sont spécifiées:
Méthode A - Les éprouvettes sont en contact direct avec le charbon actif; cette méthode est particulièrement utile dans le cas où les matières plastiques doivent être soumises à essai à des températures relativement basses du fait qu'elles se ramollissent à des températures plus élevées.
Méthode B - Les éprouvettes sont placées dans des cages métalliques pour éviter qu'elles ne soient en contact direct avec le charbon actif.
Ces méthodes sont employées, en particulier, pour déterminer quantitativement la perte en plastifiants de matières plastiques plastifiées, soumises à l'action de la chaleur. On admet, en général, que dans ce cas, il n'existe pas d'autres composés volatils, en quantité notable. Ces méthodes sont empiriques et ne conviennent que pour comparer, d'une manière rapide, les pertes en plastifiants ou, d'une façon plus générale, en composés volatils, de différentes matières plastiques.
L'ISO 176:2005 s'applique aussi à la comparaison de différents types de plastifiants; il convient alors de préparer des mélanges types, à base de résine bien déterminée et dans des proportions bien définies de plastifiant par rapport à la résine.
Polimerni materiali - Ugotavljanje izgube mehčal - Metoda z aktivnim ogljem (ISO 176:2005)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2005
1DGRPHãþD
SIST EN ISO 176:2000
3ROLPHUQLPDWHULDOL8JRWDYOMDQMHL]JXEHPHKþDO0HWRGD]DNWLYQLPRJOMHP ,62
Plastics - Determination of loss of plasticizers - Activated carbon method (ISO 176:2005)
Kunststoffe - Bestimmung der Weichmacherabgabe - Aktivkohleverfahren (ISO
176:2005)
Matieres plastiques - Détermination des pertes en plastifiants - Méthode au charbon actif
(ISO 176:2005)
Ta slovenski standard je istoveten z: EN ISO 176:2005
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 176
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2005
ICS 83.080.01 Supersedes EN ISO 176:1999
English version
Plastics - Determination of loss of plasticizers - Activated carbon
method (ISO 176:2005)
Matières plastiques - Détermination des pertes en Kunststoffe - Bestimmung der Weichmacherabgabe -
plastifiants - Méthode au charbon actif (ISO 176:2005) Aktivkohleverfahren (ISO 176:2005)
This European Standard was approved by CEN on 4 November 2004.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 176:2005: E
worldwide for CEN national Members.
Foreword
This document (EN ISO 176:2005) has been prepared by Technical Committee ISO/TC 61
"Plastics" in collaboration with Technical Committee CEN/TC 249 "Plastics", the secretariat of
which is held by IBN.
This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by August 2005, and conflicting national
standards shall be withdrawn at the latest by August 2005.
This document supersedes EN ISO 176:1999.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Endorsement notice
The text of ISO 176:2005 has been approved by CEN as EN ISO 176:2005 without any
modifications.
INTERNATIONAL ISO
STANDARD 176
Second edition
2005-02-01
Plastics — Determination of loss of
plasticizers — Activated carbon method
Matières plastiques — Détermination des pertes en plastifiants —
Méthode au charbon actif
Reference number
ISO 176:2005(E)
©
ISO 2005
ISO 176:2005(E)
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ii © ISO 2005 – All rights reserved
ISO 176:2005(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. 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.
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.
ISO 176 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 6, Ageing, chemical
and environmental resistance.
This second edition cancels and replaces the first edition (ISO 176:1976), Clause 8 of which is now Clause 9
and a new Clause 8 has been added.
INTERNATIONAL STANDARD ISO 176:2005(E)
Plastics — Determination of loss of plasticizers — Activated
carbon method
1 Scope
This International Standard specifies two empirical methods for the quantitative determination of the loss of
mass from a plastic material under defined conditions of time and temperature, in the presence of activated
carbon.
These methods are used, in particular, for the quantitative determination of the loss on heating of plasticizers
from plasticized plastic materials, in which case it is generally assumed that no significant amounts of other
volatile materials are present.
These are empirical test methods, suitable only for a rather rapid comparison of the losses of plasticizers or, in
general, of volatile compounds, from different plastics.
They may also be employed for the comparison of different types of plasticizers; in this case, standard
compounds should be prepared, o
...
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