SIST EN ISO 1624:2000

SLOVENSKI STANDARD
SIST EN ISO 1624:2000
01-maj-2000
Polimerni materiali - Homo- in kopolimeri vinilklorida - Sejalna analiza v vodi (ISO
1624:1978)
Plastics - Vinyl chloride homopolymer and copolymer resins - Sieve analysis in water
(ISO 1624:1978)
Kunststoffe - Vinylchloride-Homo- und Copolymerisate - Siebenanalyse im Wasser (ISO
1624:1978)
Plastiques - Résines d'homopolymeres et de copolymeres de chlorure de vinyle -
Analyse granulométrique par tamisage sous courant d'eau (ISO 1624:1978)
Ta slovenski standard je istoveten z: EN ISO 1624:1997
ICS:
83.080.20 Plastomeri Thermoplastic materials
SIST EN ISO 1624:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 1624:2000

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SIST EN ISO 1624:2000

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SIST EN ISO 1624:2000

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SIST EN ISO 1624:2000
INTERNATIONAL STANDARD 1624
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.ME)I(CIYHAPOflHAR OPl-AHM3AL&lR l-l0 CTAH~APTM3A~VlM.ORGANISATION INTERNATIONALE DE NORMALKATION
Plastics - Vinyl chloride homopolymer and copolymer resins
- Sieve analysis in water
Plastiques - Rbines d’homopolymtkes et de copolymkes de chlorure de vin yle - Analyse granulom&rique
par tamisage sous courant d’eau
First edition - 1978-09-01
UDC 678.743-13 : 621.928 Ref. No. ISO 162411978 (Ej
Descriptors : plastics, homopolymers, copolymers, Vinyl chloride, grain size analysis, sieve analysis.
Price based on 4 pages

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SIST EN ISO 1624:2000
ISO (the International Organization for Standardization) is a worldwide federation
of national Standards institutes (ISO member bodies). The work of developing
International Standards is carried out through ISO 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 for approval before their acceptance as International
Standards by the ISO Council.
International Standard ISO 1624 was developed by Technical Committee
ISO/TC 61, Plastics.
lt was submitted directly to the ISO Council, in accordance with clause 6.13.1 of
the Directives for the technical work of ISO. lt cancels and replaces ISO
Recommendation R 1624-1970, which had been approved by the member bodies
of the following countries :
Austria I taly Sweden
Belgium Japan Switzerland
Czechoslovakia Netherlands Turkey
Poland
Egypt,Amb Rep. of United Kingdom
Hungary Portugal U.S.A.
Romania
India U.S.S.R.
Iran South Africa, Rep. of
Israel Spain
The member bodies of the fol Iowing countries had expressed dis approval of the
document on technical grounds
France
Germany
63 International Organkation for Standardkation, 1978 l
Printed in Switzerland

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SIST EN ISO 1624:2000
ISO 16244978 (E)
INTERNATIONAL STANDARD
Plastics - Vinyl chloride homopolymer and copolymer resins
- Sieve analysis in water
-
1 SCOPE AND FIELD OF APPLICATION the inclination of the jets is such as to prevent track
formation in the resin, for example by crossing of jet
This International Standard specifies a method for the
directions;
determination of particle size of Vinyl chloride homo-
-
polymer and copolymer resins by sieve analysis in water. the sprayed water immediately goes through the
Screen and no bulk accumulation of water occurs on
it during the sieving of resins.
2 PRINCIPLE
The screening water should finally pass into a dark coloured
Sieving under a stream of water, using Standard aperture
vessel to check for the absence of resin particles in the
sievesl ) .
water.
The figure Shows a schematic apparatus including a rotating
3 REAGENT
sprinkling device for several sieves, and is given as an example
meeting the requirements of this International Standard.
Wetting agent, for example 5 to 10 % Solution of sodium
alkylsulphonate.
4.6 Filter funnel or filter crucible with adaptor, 40 mm
diameter and pore size 20 to 40 um mean diameter.
4 APPARATUS
4.1 Series of two sieves, diameter 200 to 300 mm, height
5 PROCEDURE
30 to 50 mm, having mesh sizes2) 0,063 and 0,250 mm,
and fitted with deflectors to prevent loss by Spray of
5.1 Preliminary remark
Sample. (See the figure.)
This International Standard permits several variations,
namely :
4.2 Balance, accurate to i 0,l g, range and size sufficient
to accommodate the sieves and the filtered resin. [See
a) lt is possible either
5.1 b).]
-
two superimposed
to conduct a Single test using
screens, provided that a Sprinkler device is fitted to
4.3 Oven, capable of being controlled at 80 + 2 “C.
each sieve (see the figure) (recommended method), or
4.4 Filter, placed between the supply tap and the
- to carry out two tests on two separate test
apparatus, and intended to exclude impurities in the water
portions, using a different sieve each time.
SUPPlY l
b) lt is possible to dry the residue either
4.5 Sprinkling device, for one or, better, several sieves,
-
in a filter funnel or in a filter crucible (rec-
designed so that
ommended method), or
-
the mesh and inside Walls of the sieve are
- directly on the sieve. This method requires the
thoroughly sprinkled over their entire surface;
sieves to be resistan t to repeated heating and cooling
-
the resin is agitated by the jets, for example by they should be constructed from
(for example,
using jet apertures inclined to the Screen of the sieve;
stainless steel).
1) Sieving under a stream of water gives truer results than a dry sieving me
...