EN ISO 75-3:2004
(Main)Plastics - Determination of temperature of deflection under load - Part 3: High-strength thermosetting laminates (ISO 75-3:2004)
Plastics - Determination of temperature of deflection under load - Part 3: High-strength thermosetting laminates (ISO 75-3:2004)
ISO 75-3:2004 specifies a method for the determination of the temperature of deflection under load of high-strength thermosetting laminates and compression-moulded long-fibre-reinforced plastics in which the fibre length is greater than 7,5 mm. The flexural stress used is not fixed, as in ISO 75-2, but is a fraction (1/1000) of the initial (room-temperature) flexural modulus of the material under test. This allows the method to be applied to materials with a wide range of flexural moduli.
Kunststoffe - Bestimmung der Wärmeformbeständigkeitstemperatur - Teil 3: Hochbeständige härtbare Schichtstoffe und langfaserverstärkte Kunststoffe (ISO 75-3:2004)
Dieser Teil von ISO 75 beschreibt ein Verfahren zur Bestimmung der Wärmeformbeständigkeitstemperatur unter Last (Biegespannung) von hochbeständig härtbaren Schichtstoffen. Die Biegespannung ist nicht fest vorgeschrieben, wie in Teil 2 dieser Internationalen Norm, sondern sie ist eine Funktion (1/1000) des Anfangs- (Raumtemperatur) Biegemoduls des geprüften Werkstoffs. Dadurch ist es möglich, das Verfahren auf Werkstoffe mit einem großen Bereich von Biegemoduln anzuwenden.
Ergänzende Informationen, siehe ISO 75 1:2003, Abschnitt 1.
Plastiques - Détermination de la température de fléchissement sous charge - Partie 3: Stratifiés thermodurcissables à haute résistance (ISO 75-3:2004)
L'ISO 75-3:2004 spécifie une méthode permettant de déterminer la température de fléchissement sous charge de stratifiés thermodurcissables à haute résistance et de plastiques renforcés de fibres longues moulés par compression dans lesquels la longueur de fibre est supérieure à 7,5 mm. La contrainte de flexion utilisée n'est pas fixée, comme dans l'ISO 75-2, mais représente une fraction (1/1 000) du module initial de flexion (à température ambiante) du matériau soumis à essai. La méthode peut ainsi être appliquée à des matériaux caractérisés par une large gamme de modules de flexion.
Polimerni materiali - Določanje temperature upogiba pod obremenitvijo - 3. del: Duromerni laminati z visoko trdnostjo (ISO 75-3:2004)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2004
1DGRPHãþD
SIST EN ISO 75-3:2000
3ROLPHUQLPDWHULDOL'RORþDQMHWHPSHUDWXUHXSRJLEDSRGREUHPHQLWYLMRGHO
'XURPHUQLODPLQDWL]YLVRNRWUGQRVWMR ,62
Plastics - Determination of temperature of deflection under load - Part 3: High-strength
thermosetting laminates (ISO 75-3:2004)
Kunststoffe - Bestimmung der Wärmeformbeständigkeitstemperatur - Teil 3:
Hochbeständige härtbare Schichtstoffe und langfaserverstärkte Kunststoffe (ISO 75-
3:2004)
Plastiques - Détermination de la température de fléchissement sous charge - Partie 3:
Stratifiés thermodurcissables a haute résistance (ISO 75-3:2004)
Ta slovenski standard je istoveten z: EN ISO 75-3:2004
ICS:
83.080.10 Duromeri Thermosetting materials
83.120 2MDþDQLSROLPHUL Reinforced plastics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
INTERNATIONAL ISO
STANDARD 75-3
Second edition
2004-05-15
Plastics — Determination of temperature of
deflection under load —
Part 3:
High-strength thermosetting laminates and
long-fibre-reinforced plastics
Plastiques — Détermination de la température de fléchissement sous
charge —
Partie 3: Stratifiés thermodurcissables à haute résistance et plastiques
renforcés de fibres longues
Reference number
ISO 75-3:2004(E)
©
ISO 2004
ISO 75-3:2004(E)
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ii © ISO 2004 — All rights reserved
ISO 75-3:2004(E)
Contents Page
Foreword . iv
Introduction. v
1 Scope. 1
2 Normative references. 1
3 Terms and definitions. 1
4 Principle . 1
5 Apparatus. 2
6 Test specimens . 2
7 Conditioning . 3
8 Procedure. 3
9 Expression of results. 4
10 Precision . 4
11 Test report. 4
Bibliography. 5
ISO 75-3:2004(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
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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 75-3 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 2, Mechanical properties.
This second edition cancels and replaces the first edition (ISO 75-3:1993), which has been technically revised.
ISO 75 consists of the following parts, under the general title Plastics — Determination of temperature of deflection
under load:
Part 1: General test method
Part 2: Plastics and ebonite
Part 3: High-strength thermosetting laminates and long-fibre-reinforced plastics
iv © ISO 2004 — All rights reserved
ISO 75-3:2004(E)
Introduction
In this edition of ISO 75-3, the test load is determined as a fraction of the flexural modulus of the material under
test. This has the advantage that the test load is a fraction of the flexural strength of the material. The test
determines the temperature-dependent decrease in the flexural modulus. Because tensile modulus and tensile
strength are not necessarily related, using the flexural modulus to determine the test load leads to more readily
comparable descriptions of material behaviour.
The strain increase at which the temperature of deflection under load is read has been increased fro
...
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