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INTERNATIONAL
STANDARD 8130-3
First edition
1992-l z-01
Coating powders -
Part 3:
Determination of density by liquid displacement .
pyknometer
I ’
Pouches pour revetement -
Partie 3: DBtermination de la masse volumique ZI /‘aide ci’un pycnometre
c
A dkplacement de liquide
Reference number
IS0 8130-3:1992(E)
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IS0 8130-3:1992(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International Standards is normally carried out through IS0
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, govern-
mental and non-governmental, in liaison with ISO, also take part in the
work. IS0 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 Inter-
national Standard requires approval by at least 75 % of the member
bodies casting a vote.
International Standard IS0 8130-3 was prepared by Technical Committee
ISO/TC 35, faints and varnishes, Sub-Committee SC 9, General test
methods for paints and varnishes.
IS0 8130 consists of the following parts, under the general title Coating
powders:
- Part 1: Determination of particle size distribution by sieving
- Part 2: Determination of density by gas comparison pyknometer
(referee method)
of density by liquid displacement
- Part 3: Determination
pyknometer
- Part 4: Calculation of lower explosion limit
- Part 5: Determination of flow properties of a powder/air mixture
- Part 6: Determination of gel time of thermosetting coating powders
at a given temperature
- Pat-t 7: Determination of loss of mass on staving
- Part 8: Assessment of the storage sfability of thermosetting pow-
ders
0 IS0 1992
All rights reserved. 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 the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 GetWe 20 l Switzerland
Printed in Switzerland
ii
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IS0 8130=3:1992(E)
-
Part 9: Sampling
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INTERNATIONAL STANDARD IS0 8130-3:1992(E)
Coating powders -
Part 3:
Determ ination of density by liquid displacement pyknometer
IS0 842:1-984, Raw materials for paints and varnishes
1 Scope
- Sampling.
This part of IS0 8130 specifies a liquid displacement
IS0 3696:1987, Water for analytical laboratory use -
pyknometer method for the determination of the
Specification and test methods.
density of coating powders. The method is based on
a determination of the mass and the volume of a test
IS0 8130.2:1992, Coating powders - Part 2: Deter-
portion.
mination of density by gas comparison pyknometer
(referee method).
The apparatus specified is relatively inexpensive,
but the liquid displacement pyknometer method is
liable to give erroneous results, particularly if the
3 Principle
powder swells in contact with the displacement liq-
uid used or the displacement liquid does not totally
The density of the coating powder is determined in
displace the air between the powder particles. The
a liquid displacement pyknometer in accordance
liquid displacement method is much slower in exe-
with IS0 787-10, using a liquid that completely wets
cution and less accurate than the gas comparison
the product under test without swelling or dissolving
pyknometer method specified in IS0 8130-2 and is
only to be used if it can be shown that the same re- it.
sults will be obtained as for the gas comparison
pyknometer method.
4 Materials
4.1 Water, of at least grade 3 purity as defined in
2 Normative references IS0 3696, freshly boiled and cooled.
The following standards contain provisions which,
4.2 Displacement liquid: any suitable aliphatic
through reference in this text, constitute provisions
hydrocarbon or mixture of aliphatic hydrocarbons,
of this part of IS0 8130. At the time of publication,
free from aromatic compounds, with a boiling point
the editions indicated were valid. All standards are
within the range 80
...