EN ISO 308:1997

SLOVENSKI STANDARD
01-maj-2000
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Plastics - Phenolic moulding materials - Determination of acetone-soluble matter
(apparent resin content of material in the unmoulded state) (ISO 308:1994)
Kunststoffe - Phenolharz-Formmassen - Bestimmung des acetonlöslichen Anteils
(Scheinbarer Harzgehalt von Formmassen in unverarbeitetem Zustand) (ISO 308:1994)
Plastiques - Matieres a mouler a base de phénoplastes - Détermination des matieres
solubles dans l'acétone (teneur apparente en résine des matieres a l'état non moulé)
(ISO 308:1994)
Ta slovenski standard je istoveten z: EN ISO 308:1997
ICS:
83.080.10 Duromeri Thermosetting materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL ISO
STANDARD 308
Third edition
1994-10-01
Plastics - Phenolic moulding materials -
Determination of acetone-soluble matter
(apparent resin ’content of material in the
unmoulded state)
Plas tiques - Mati&res 2 mouler 2 base de phknoplastes -
Determination des ma tieres solubles dans I ’ac&one (teneur apparen te en
rksine des matieres A Etat non mouk)
Reference number
ISO 3087 994(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. Esch 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.
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 ISO 308 was prepared by Technical Committee
lSO/TC 61, Plastics, Subcommittee SC 12, Thermosetting materials.
This third edition cancels and replaces the second edition
(ISO 308:1981), of which it constitutes a minor revision.
0 ISO 1994
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
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microfilm, without Permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-l 211 Geneve 20 l Switzerland
Printed in Switzerland
INTERNATIONAL STANDARD 0 ISO ISO 308:1994(E)
Plastics - Phenolic moulding materials -
Determination of acetone-soluble matter (apparent
resin content of material in the unmoulded state)
1 Scope 3 Definitions
For the purposes of this International Standard, the
This International Standard specifies a gravimetric
definitions of moulding materials based on phenolic
method for the determination of the amount of matter
resins, novolak resins and resol resins given in
that tan be extracted by acetone, at a temperature
ISO 472 and ISO 800 apply.
near its boiling Point, from a Sample of finely divided
phenolic moulding material. The method applies only
to moulding materials based upon novolak resins and
4 Principle
not to those based upon resols, as the latter type of
resin may not be completely soluble in acetone.
The acetone-soluble matter is extracted, using hot
acetone, from a finely divided test Portion. The extract
In this International Standard, the amount of acetone-
is dried under controlled conditions and weighed.
soluble matter is reported as the apparent resin con-
tent because, although the extract consists mainly of
5 Reagent
phenolic resin and hexamine, other acetone-soluble
components such as Iubricants and colorants or na-
tural resins from the filler are normally also present 5.1 Acetone, pure.
and will therefore be reported as resin.
6 Apparatus
6.1 Reduction device, for reducing coarse materials
to a finer state of division.
2 Normative references
6.2 Balance, accurate to 1 mg.
The following Standards contain provisions which,
through reference in this text, constitute provisions
6.3 Extraction apparatus, of the t
...