Plastics - Unsaturated polyester resins - Measurement of gel time at ambient temperature (ISO 2535:2001)

UAP instead of VA/ISO (CC/010226)

Kunststoffe - Ungesättigte Polyesterharze - Bestimmung der Gelzeit bei Umgebungstemperatur (ISO 2535:2001)

Diese Internationale Norm legt Verfahren zur Bestimmung der Gelzeit bei Umgebungstemperatur (d. h. im Bereich von 18 °C bis 30 °C) von ungesättigten Polyesterharzen unter festgelegten Bedingungen fest.
Die Bezugstemperatur, falls erforderlich, beträgt 25 °C.

Plastiques - Résines de polyesters non saturés - Mesurage du temps de gel a température ambiante (ISO 2535:2001)

La présente Norme internationale spécifie des méthodes de mesurage, dans des conditions définies, du temps de
gel à température ambiante (dans l'intervalle 18 °C à 30 °C) des résines de polyesters non saturés.
Si nécessaire, la température de référence de l'essai est 25 °C.

Polimerni materiali - Nenasičene poliestrske smole - Merjenje časa želiranja pri sobni temperaturi (ISO 2535:2001)

General Information

Status
Published
Publication Date
30-Apr-2003
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-May-2003
Due Date
01-May-2003
Completion Date
01-May-2003

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SLOVENSKI STANDARD
SIST EN ISO 2535:2003
01-maj-2003
1DGRPHãþD
SIST EN ISO 2535:2000
3ROLPHUQLPDWHULDOL1HQDVLþHQHSROLHVWUVNHVPROH0HUMHQMHþDVDåHOLUDQMDSUL
VREQLWHPSHUDWXUL ,62
Plastics - Unsaturated polyester resins - Measurement of gel time at ambient
temperature (ISO 2535:2001)
Kunststoffe - Ungesättigte Polyesterharze - Bestimmung der Gelzeit bei
Umgebungstemperatur (ISO 2535:2001)
Plastiques - Résines de polyesters non saturés - Mesurage du temps de gel a
température ambiante (ISO 2535:2001)
Ta slovenski standard je istoveten z: EN ISO 2535:2002
ICS:
83.080.10 Duromeri Thermosetting materials
SIST EN ISO 2535:2003 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 2535:2003
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SIST EN ISO 2535:2003
EUROPEAN STANDARD
EN ISO 2535
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2002
ICS 83.080.10 Supersedes EN ISO 2535:1998
English version
Plastics - Unsaturated polyester resins - Measurement of gel
time at ambient temperature (ISO 2535:2001)

Plastiques - Résines de polyesters non saturés - Mesurage Kunststoffe - Ungesättigte Polyesterharze - Bestimmung

du temps de gel à température ambiante (ISO 2535:2001) der Gel-Zeit bei Umgebungstemperatur (ISO 2535:2001)

This European Standard was approved by CEN on 23 September 2002.

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 Management Centre 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 Management Centre has the same status as the official

versions.

CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,

Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels

© 2002 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 2535:2002 E

worldwide for CEN national Members.
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SIST EN ISO 2535:2003
EN ISO 2535:2002 (E)
Foreword

The text of ISO 2535:2001 has been prepared by Technical Committee ISO/TC 61 "Plastics"

of the International Organization for Standardization (ISO) and has been taken over as EN

ISO 2535:2002 by 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 May 2003, and conflicting national

standards shall be withdrawn at the latest by May 2003.
This document supersedes EN ISO 2535:1998.

According to the CEN/CENELEC Internal Regulations, the national standards organizations of

the following countries are bound to implement this European Standard: Austria, Belgium,

Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,

Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the

United Kingdom.
Endorsement notice

The text of ISO 2535:2001 has been approved by CEN as EN ISO 2535:2002 without any

modifications.

NOTE Normative references to International Standards are listed in Annex ZA (normative).

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SIST EN ISO 2535:2003
EN ISO 2535:2002 (E)
Annex ZA
(normative)
Normative references to international publications
with their relevant European publications

This European Standard incorporates by dated or undated reference, provisions from other

publications. These normative references are cited at the appropriate places in the text and the

publications are listed hereafter. For dated references, subsequent amendments to or revisions

of any of these publications apply to this European Standard only when incorporated in it by

amendment or revision. For undated references the latest edition of the publication referred to

applies (including amendments).

NOTE Where an International Publication has been modified by common modifications, indicated by

(mod.), the relevant EN/HD applies.
Publication Year Title EN/HD Year
ISO 472 1999 Plastics -Vocabulary EN ISO 472 2001
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SIST EN ISO 2535:2003
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SIST EN ISO 2535:2003
INTERNATIONAL ISO
STANDARD 2535
Third edition
2001-07-15
Plastics — Unsaturated-polyester resins —
Measurement of gel time at ambient
temperature
Plastiques — Résines de polyesters non saturés — Mesurage du temps de
gel à température ambiante
Reference number
ISO 2535:2001(E)
ISO 2001
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SIST EN ISO 2535:2003
ISO 2535:2001(E)
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© ISO 2001

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 either ISO at the address below or ISO's member body

in the country of the requester.
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Printed in Switzerland
ii © ISO 2001 – All rights reserved
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SIST EN ISO 2535:2003
ISO 2535:2001(E)
Contents Page

Foreword.....................................................................................................................................................................iv

1 Scope ..............................................................................................................................................................1

2 Normative references ....................................................................................................................................1

3 Terms and definitions ...................................................................................................................................1

4 Principle..........................................................................................................................................................1

5 Reagents.........................................................................................................................................................2

6 Apparatus .......................................................................................................................................................2

7 Procedure .......................................................................................................................................................3

8 Expression of results ....................................................................................................................................4

9 Precision.........................................................................................................................................................4

10 Test report ......................................................................................................................................................4

Annex A (normative) Automatic-release apparatus ................................................................................................5

Annex B (normative) Continuous-measurement apparatus...................................................................................7

© ISO 2001 – All rights reserved iii
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SIST EN ISO 2535:2003
ISO 2535:2001(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 3.

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 International Standard may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights.

International Standard ISO 2535 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 12,

Thermosetting materials.

This third edition cancels and replaces the second edition (ISO 2535:1997), which has been revised to include four

variants of the original method, calibration procedures for the device used to determine the gel time (see clauses

A.2 and B.2) and precision data.
Annexes A and B form a normative part of this International Standard.
iv © ISO 2001 – All rights reserved
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SIST EN ISO 2535:2003
INTERNATIONAL STANDARD ISO 2535:2001(E)
Plastics — Unsaturated-polyester resins — Measurement of gel
time at ambient temperature
1 Scope

This International Standard specifies methods of measuring, under defined conditions, the gel time at ambient

temperature (i.e. within the range 18 °Cto30 °C) of unsaturated-polyester resins.

The referee temperature, if needed, is 25 °C.
2 Normative references

The following normative documents contain provisions which, through reference in this text, constitute provisions of

this International Standard. For dated references, subsequent amendments to, or revisions of, any of these

publications do not apply. However, parties to agreements based on this International Standard are encouraged to

investigate the possibility of applying the most recent editions of the normative documents indicated below. For

undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC

maintain registers of currently valid International Standards.
ISO 472:1999, Plastics — Vocabulary.
ISO 4619:1998, Driers for paints and varnishes.

ISO 15038:1999, Plastics — Organic-perester crosslinking agents for unsaturated-polyester thermosetting

materials — Determination of active-oxygen content.
3 Terms and definitions

For the purposes of this International Standard, the terms and definitions given in ISO 472 apply, together with the

following term and definition.
3.1
gel time at ambient temperature

the time which elapses between the end of the addition of an initiator to a resin and the moment when the viscosity

reaches 50 Pa�s
4Principle

The time required for a defined formula (resin, accelerator, initiator) at ambient temperature (within the range 18 °C

to 30 °C) to reach a viscosity of 50 Pa�s (the viscosity conventionally accepted as corresponding to the gel state) is

measured.
© ISO 2001 – All rights reserved 1
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SIST EN ISO 2535:2003
ISO 2535:2001(E)
Four methods are specified:

Method A1 uses an automatic-release device (see annex A) in which a glass rod rotates in a resin mixture

contained in a test tube, and rotation of the glass rod is stopped automatically when a viscosity of 50 Pa�sis

reached.
Method A2 also uses
...

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