ISO 2535:1974

Plastics — Unsaturated polyester resins — Measurement of gel time at 25 degrees C

Plastiques — Résines de polyesters non saturés — Mesurage de la durée de gélification à 25 degrés C

Polimerni materiali - Nenasičene poliestrske smole - Merjenje časa želiranja pri 25° C

General Information

• Status: Withdrawn
• Publication Date: 31-May-1974
• Withdrawal Date: 31-May-1974
• ICS: 83.080.10 - Thermosetting materials
• Technical Committee: ISO/TC 61/SC 12 - Thermosetting materials
• Drafting Committee: ISO/TC 61/SC 12/WG 5 - Unsaturated polyesters, epoxy resins and other resins
• Current Stage: 9599 - Withdrawal of International Standard
• Completion Date: 06-Mar-1997
• Ref Project: SIST ISO 2535:1996 - Plastics -- Unsaturated polyester resins -- Measurement of gel time at 25 degrees C

Relations

• Revised: ISO 2535:1997 - Plastics — Unsaturated polyester resins — Measurement of gel time at 25 degrees C
• Effective Date: 15-Apr-2008

Standards Content (Sample)

,a!!*
INTERNATIONAL STANDARD 02535 '*E!
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION .MElDYHAPOnHAR OPiAHIIJAUMR ii0 CTAHnAPTZ(3AUMM .ORGANISATION INTERNATIONALE DE NORMALISATION
L
Plastics - Unsaturated polyester resins - Measurement of gel
time at 25 "C
&&&s&stiques - Résmes de polyesters non saturés - Mesurage de la durée de gélificatlon à 25 "C
First edition - 1974-06-01
'L.
Ref. No. IS0 2535-1974 (E)
UDC 678.674 : 541.64
Descriptors : plastics, polyester resins, unsaturated chains, tests, gelation, delay, determination, time measurement.
Price based on 3 pages

---------------------- Page: 1 ----------------------
FOREWORD
IS0 (the International Organization for Standardization) is a worldwide federation
of national standards institutes (IS0 Member Bodies). The work of developing
International Standards is carried out through IS0 Technical Committees. Every
Member Body interested in a subject for which a Technical Committee has been set
up 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.
Draft International Standards adopted by the Technical Committees are circulated
to the Member Bodies fm approval before their acceptance as International
Standards by the IS0 Council.
International Standard IS0 2535 was drawn up by Technical Committee
ISO/TC 61, Plastics, and circulated to the Member Bodies in September 1971.
It has been approved by the Member Bodies of the following countries :
India South Africa, Rep. of
Australia
Israel Spain
Belgium
Japan Sweden
Brazil
Netherlands Thailand
Czechoslovakia
New Zealand Turkey
Egypt, Arab Rep. of
France Poland United Kingdom
Ger man y Portugal U.S.S. R.
Hungary Romania U.S.A.
The Member Bodies of the following countries expressed disapproval of the
:
document on technical grounds
Canada
Italy
Switzerland
O International Organization for Standardization, 1974
Printed in Switzerland

---------------------- Page: 2 ----------------------
I NTE RNATl ON AL STANDARD IS0 2535-1974 (E)
Plastics - Unsaturated polyester resins - Measurement of gel
time at 25 "C
This solution should be stored in a refrigerator and used
1 SCOPE AND FIELD OF APPLICATION
within 1 month of preparation or receipt.
This International Standard specifies a method of
measuring, under defined conditions, the gel time at 25 "C
NOTES
of unsaturated polyester resins.
1 Commercial methyl ethyl ketone peroxide is a mixture of
isomers in variable proportions, and two commercial products
This method is applicable to all resins, but it is particularly
assaying the same percentage of active oxygen may give different
useful for cold-setting resins.
test results. (See clause 8.)
2 In no circumstance should the methyl ethyl ketone peroxide and
cobalt octoate solutions be mixed together as an explosive mixture
2 PRINCIPLE
is formed. Mix each separately into the polyester resin.
Preparation at 25 "C of a mixture of resin with specified
amounts of standard accelerator and initiator.
4 APPARATUS
This mixture is placed in a test tube of specified
dimensions, which is immersed in a bath thermostatically
4.1 Test tube, glass, minimum length 120 mm, internal
controlled at 25 "C.
diameter 18 mm, fitted with a stopper, to be used to
A device, which is designed to have the least possible effect
contain the test mixture.
on the viscometric properties of the mixture, is used to
indicate the exact time that the viscosity of the mixture
4.2 Device, to measure the viscosity of the mixture in the
50 Pa.s (500 P) (the conventional viscosity
reaches
tube.
corresponding to start of the gel state). The elapsed time
between the end of the addition of the initiator and The device should be such that it has the least possible
accelerator and the moment when the viscosity reaches effect on the rheological properties of the mixture.
50 Pa.s is conventionally called "Gel time at 25 OC".
NOTE - The description of a suitable device (see the figure) is given
NOTE - The type and proportion of accelerator and initiator and
below as an example
the temperature given in this International Standard are reference
i
conditions. A glass rod, 6 mm in diameter and of sufficient length is immersed
in the mixture to a depth of 50 mm The rod is rotated on its axis at
In particular cases, other conditions may be agreed between the
a slow speed (1 to 2 rev/min) by means of a torsion wire driven by a
interested parties (seeclause 7)
geared electric motor
When the torsion wire is twisted to the angle corresponding to a
viscosity of about 50 Pa.s (500 P), the time is taken An automatic
3 REAGENTS device may also stop the motor as well as the chronometer and
signal the end of the test
3.1 Acetone.
4.3 Bath, thermostatically controlled at 25 f 0,5 "C and
protected from light.
3.2 Reference accelerator : cobalt octoate solution in
toluene.
4.4 Beaker, capacity 100 ml.
Weigh into a beaker 5 f 0.01 g of a base solution of cobalt
octoate in an inert solvent, containing 6 % of cobalt metal.
4.5 Two graduated pipettes, capacity 1 ml, graduated in
Transfer into a 50 ml volumetric flask fitted with a ground
0,Ol ml and clearly marked to distinguish one from the
stopper. Dilute to 50 ml with toluene.
other.
1 ml of this solution corresponds to 0,100 g of the base
4.6 B
...

SLOVENSKI STANDARD
SIST ISO 2535:1996
01-junij-1996
3ROLPHUQLPDWHULDOL1HQDVLþHQHSROLHVWUVNHVPROH0HUMHQMHþDVDåHOLUDQMDSULƒ
&
Plastics -- Unsaturated polyester resins -- Measurement of gel time at 25 degrees C
Plastiques -- Résines de polyesters non saturés -- Mesurage de la durée de gélification à
25 degrés C
Ta slovenski standard je istoveten z: ISO 2535:1974
ICS:
83.080.10 Duromeri Thermosetting materials
SIST ISO 2535:1996 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST ISO 2535:1996

---------------------- Page: 2 ----------------------

SIST ISO 2535:1996
,a!!*
INTERNATIONAL STANDARD 02535 '*E!
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION .MElDYHAPOnHAR OPiAHIIJAUMR ii0 CTAHnAPTZ(3AUMM .ORGANISATION INTERNATIONALE DE NORMALISATION
L
Plastics - Unsaturated polyester resins - Measurement of gel
time at 25 "C
&&&s&stiques - Résmes de polyesters non saturés - Mesurage de la durée de gélificatlon à 25 "C
First edition - 1974-06-01
'L.
Ref. No. IS0 2535-1974 (E)
UDC 678.674 : 541.64
Descriptors : plastics, polyester resins, unsaturated chains, tests, gelation, delay, determination, time measurement.
Price based on 3 pages

---------------------- Page: 3 ----------------------

SIST ISO 2535:1996
FOREWORD
IS0 (the International Organization for Standardization) is a worldwide federation
of national standards institutes (IS0 Member Bodies). The work of developing
International Standards is carried out through IS0 Technical Committees. Every
Member Body interested in a subject for which a Technical Committee has been set
up 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.
Draft International Standards adopted by the Technical Committees are circulated
to the Member Bodies fm approval before their acceptance as International
Standards by the IS0 Council.
International Standard IS0 2535 was drawn up by Technical Committee
ISO/TC 61, Plastics, and circulated to the Member Bodies in September 1971.
It has been approved by the Member Bodies of the following countries :
India South Africa, Rep. of
Australia
Israel Spain
Belgium
Japan Sweden
Brazil
Netherlands Thailand
Czechoslovakia
New Zealand Turkey
Egypt, Arab Rep. of
France Poland United Kingdom
Ger man y Portugal U.S.S. R.
Hungary Romania U.S.A.
The Member Bodies of the following countries expressed disapproval of the
:
document on technical grounds
Canada
Italy
Switzerland
O International Organization for Standardization, 1974
Printed in Switzerland

---------------------- Page: 4 ----------------------

SIST ISO 2535:1996
I NTE RNATl ON AL STANDARD IS0 2535-1974 (E)
Plastics - Unsaturated polyester resins - Measurement of gel
time at 25 "C
This solution should be stored in a refrigerator and used
1 SCOPE AND FIELD OF APPLICATION
within 1 month of preparation or receipt.
This International Standard specifies a method of
measuring, under defined conditions, the gel time at 25 "C
NOTES
of unsaturated polyester resins.
1 Commercial methyl ethyl ketone peroxide is a mixture of
isomers in variable proportions, and two commercial products
This method is applicable to all resins, but it is particularly
assaying the same percentage of active oxygen may give different
useful for cold-setting resins.
test results. (See clause 8.)
2 In no circumstance should the methyl ethyl ketone peroxide and
cobalt octoate solutions be mixed together as an explosive mixture
2 PRINCIPLE
is formed. Mix each separately into the polyester resin.
Preparation at 25 "C of a mixture of resin with specified
amounts of standard accelerator and initiator.
4 APPARATUS
This mixture is placed in a test tube of specified
dimensions, which is immersed in a bath thermostatically
4.1 Test tube, glass, minimum length 120 mm, internal
controlled at 25 "C.
diameter 18 mm, fitted with a stopper, to be used to
A device, which is designed to have the least possible effect
contain the test mixture.
on the viscometric properties of the mixture, is used to
indicate the exact time that the viscosity of the mixture
4.2 Device, to measure the viscosity of the mixture in the
50 Pa.s (500 P) (the conventional viscosity
reaches
tube.
corresponding to start of the gel state). The elapsed time
between the end of the addition of the initiator and The device should be such that it has the least possible
accelerator and the moment when the viscosity reaches effect on the rheological properties of the mixture.
50 Pa.s is conventionally called "Gel time at 25 OC".
NOTE - The description of a suitable device (see the figure) is given
NOTE - The type and proportion of accelerator and initiator and
below as an example
the temperature given in this International Standard are reference
i
conditions. A glass rod, 6 mm in diameter and of sufficient length is immersed
in the mixture to a depth of 50 mm The rod is rotated on its axis at
In particular cases, other conditions may be agreed between the
a slow speed (1 to 2 rev/min) by means of a torsion wire driven by a
interested parties (seeclause 7)
geared electric motor
When the torsion wire is twisted to the angle corresponding to a
viscosity of about 50 Pa.s (500 P), the time is taken An automatic
3 REAGENTS device may also stop the motor as well as the chronometer and
signal the end of the test
3.1 Acetone.
4.3 Bath, thermostatically controlled at 25 f 0,5 "C and
protected from light.
3.2 Reference accelerator : cobalt octoate solution in
toluene.
4.4 Beaker, capacity 100 ml.
Weigh into a beaker 5 f 0.01 g o
...

E
NORME INTERNATIONALE 2535
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION *MEYnYHAWLIHAR OPrAHH3AUHR no CTAHnAPTW3AUHH .ORGANISATION INTERNATIONALE DE NORMALISATION
M&&e$astiques - Résines de polyesters non saturés -
Mesurage.de la durée de gélification à 25 "C
Plastics - Unsaturated polyester resins - Measurement of gel time at 25 "C
Première édition - 1974-06-01
~~ ~ ~
CDU 678.674 : 541.64 Réf. NO : IS0 2535-1974 (F)
Descripteurs : matière plastique, polyester, chaîne non saturée, essai, géiification, durée, détermination, mesurage du temps.
Prix basé sur 3 pages

---------------------- Page: 1 ----------------------
AVANT-PROPOS
L'ISO (Organisation Internationale de Normalisation) est une fédération mondiale
d'organismes nationaux de normalisation (Comités Membres ISO). L'élaboration de
Normes Internationales est confiée aux Comités Techniques ISO. Chaque Comité
Membre intéressé par une étude a le droit de faire partie du Comité Technique
correspondant. Les organisations internationales, gouvernementales et non
avec I'ISO, participent également aux travaux.
gouvernementales, en liaison
Les Projets de Normes Internationales adoptés par les Comités Techniques sont
soumis aux Comités Membres pour approbation, avant leur acceptation comme
Normes Internationales par le Conseil de I'ISO.
La Norme Internationale IS0 2535 a été établie par le Comité Technique
ISO/TC61, " &tiques, et soumise aux Comités Membres en
s
septembre 1971. -
Elle a été approuvée par les Comités Membres des pays suivants :
Afrique du Sud, Rép. d' Hongrie Roumanie
Allemagne Inde Royaume-Uni
Australie Israël Suede
Belgique Japon Tchécoslovaquie
Brésil Nouvelle-Zélande Thaï lande
Egypte, Rép. arabe d' Pays-Bas Turquie
Pologne U.R.S.S.
Espagne
France Portugal U.S.A.
Les Comités Membres des pays suivants ont désapprouvé le document pour des
raisons techniques :
Canada
Italie
Suisse
O Organisation Internationale de Normalisation, 1974 O
Imprimé en Suisse

---------------------- Page: 2 ----------------------
NORME INTERNATIONALE IS0 2535-1974 (FI
.\
-M&te&astiques - Résines de polyesters non saturés -
Mesuragede la durée de gélification à 25 "C
1 OBJET ET DOMAINE D'APPLICATION 3.3 Initiateur de référence: solution à 50 % (rn/m) de
peroxyde de méthyléthylcétone dans le diméthylphtalate
La présente Norme Internationale spécifie une méthode de
titrant 9 % d'oxygène actif.
mesurage dans des conditions définies, de la durée de
Cette solution doit être conservée au réfrigérateur et sa
gélification à 25 "C des résines de polyesters non saturés.
i
préparation ou sa réception doit dater de moins de 1 mois.
Cette méthode est applicable à toutes les résines, mais plus
NOTES
particulièrement aux résines destinées à être utilisées à la
température ambiante. -
1 Le peroxyde de méthyléthylcétone commercial est un mélange
de plusieurs isomères en proportions variables et deux produits
commerciaux de même titre en oxygène actif risquent de donner des
résultats différents. (Voir chapitre 8).
2 PRINCIPE
2 Ne jamais mélanger la solution de peroxyde de
Préparation à 25 "C d'un mélange de résine, d'accélérateur
méthyléthylcétone et la solution d'octoate de cobalt sous peine de
et d'initiateur définis quant à leur nature et à leurs
constituer un mélange explosif. Mélanger chaque constituant
proportions. séparément à la résine de polyester.
Ce mélange est placé dans un tube à essais de dimensions
définies plongé dans un bain thermorégularisé à 25 "C.
4 APPAREILLAGE
Un dispositif, qui doit modifier le moins possible les
propriétés viscosimétriques du mélange, permet de repérer
4.1
Tube à essais, en verre, de 120 mm de longueur au
le moment où la viscosité atteint 50 Pa.s (500 P) (viscosité
moins et de 18 mm de diamètre intérieur, bouchable,
conventionnellement admise comme correspondant à l'état
destiné à contenir le mélange en essai.
de gel 1.
Le temps écoulé entre la fin de l'addition de l'initiateur et 4.2 Dispositif de mesurage de la viscosité du mélange à
le moment où la viscosité atteint 50 Pa.s est appelé
l'intérieur du tube à essais.
conventionnellement ((Durée de gélification à 25 OC».
Ce dispositif doit être tel qu'il modifie le moins possible les
NOTE - La nature et les proportions d'accélérateur et d'initiateur,
propriétés rhéologiques du mélange.
ainsi que la température d'essai indiquées dans la présente Norme
Internationale, correspondent aux conditions de référence.
NOTE - On peut faire appel à un appareil tel que le suivant (voir la
figure). donné a titre d'exemple.
Dans certains cas particuliers, d'autres conditions peuvent être
décidées par accord entre les parties intéressées (voir chapitre 7).
Une tige en verre de 6 mm de diamètre d'une longueur suffisante est
immergée de 50 mm dans le mélange. Cette tige tourne autour de
son axe a très faible vitesse (1 a 2 tr/min) par l'intermédiaire d'un fil
de torsion mû lui-même par un moteur électrique a réducteur.
3 RÉACTIFS
Lorsque le fil de torsion s'est tordu d'un angle correspondant a la
viscosité 50 Pa.s (500 P), le mesurage est terminé. Un
d'environ
3.1 Acétone. dispositif automatique peut arrêter le moteur ainsi que le
chronomètre et signaler la fin de l'essai.
3.2 Accélérateur de référence : solution d'octoate de
4.3 Bain, thermoréglable à 25 f 0,5 OC, abrité de la
cobalt dans le toluène.
lumière.
Peser dans un bécher 5 I0,Ol g d'une solution de base
d'octoate de cobalt dans un dispersant inerte, contenant
4.4 Bécher, capacité 100 ml.
6 % de cobalt métal. Transvaser dans une fiole jaugée de
50 ml à bouchon rodé. Diluer à 50 ml avec du toluène.
4.5 Deux pipettes graduées, capacité 1 ml, graduées en
1 ml de cette solution correspond à 0,100 g de la solution 0.01 ml et clairement repérées pour qu'il n'y ait pas de
de base d'octoate de cobalt à 6 % de cobalt métal. confusion entre elles.
1

---------------------- Pa
...