SIST EN ISO 2555:2000
(Main)Plastics - Resins in the liquid state or as emulsions or dispersions - Determination of apparent viscosity by the Brookfield Test method (ISO 2555:1989)
Plastics - Resins in the liquid state or as emulsions or dispersions - Determination of apparent viscosity by the Brookfield Test method (ISO 2555:1989)
Specification of a method for determining an apparent viscosity of resins in a liquid state, using one of the types of rotational viskosimeter described in this standard. A spindle or disc is driven at constant rotational frequency in the product being studied. The resistance exerted by the fluid on the spindle, which depends on the viscosity of the product, cause a torque, which is indicated by a suitable meter. The application of this method to specific products is detailed in annex A. The viscosimeters types A, B and C permit visscosity measurements from 0,02 Pa.s to 60 000 Pa.s.
Kunststoffe - Harze im flüssigen Zustand, als Emulsionen oder Dispersionen - Bestimmung der scheinbaren Viskosität nach dem Brookfield-Verfahren (ISO 2555:1989)
Diese Internationale Norm legt für Harze im flüssigen oder in einem vergleichbaren Zustand ein Verfahren zur Bestimmung der scheinbaren Viskosität nach Brookfield fest, bei dem eine der in dieser Norm beschriebenen Ausführungen eines Rotationsviskosimeters verwendet wird. Die Anwendung dieses Verfahrens auf spezielle Produkte wird im einzelnen in Anhang A beschrieben. Viskosimeter in den Ausführungen A, B und C ermöglichen Messungen der Viskosität in einem Bereich von 0,02 Pa.s (20 cP) bis 60 000 Pa.s (60x106 cP).
Plastiques - Résines a l'état liquide ou en émulsions ou dispersions - Détermination de la viscosité apparente selon le Procédé Brookfield (ISO 2555:1989)
La présente Norme internationale prescrit une méthode pour ladétermination de la viscosité apparente selon le Procédé Brookfield,des résines à l'état liquide ou assimilé, à l'aide d'un des types desviscosimètres rotatifs décrits dans la présente Norme internationale.L'application de cette méthode à des produits particuliers est détaillée dans l'annexe A.Les viscosimètres des types A, B et C permettent des rnesuragesde viscosité entre 0,02 Pa-s (20 cP) et 60 000 Pa-s (60 x 10 puissance 6 cP).
Polimerni materiali - Tekoče smole, emulzije ali disperzije - Preskusna metoda za določanje navidezne viskoznosti po Brookfieldu (ISO 2555:1989)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 2555:2000
01-maj-2000
3ROLPHUQLPDWHULDOL7HNRþHVPROHHPXO]LMHDOLGLVSHU]LMH3UHVNXVQDPHWRGD]D
GRORþDQMHQDYLGH]QHYLVNR]QRVWLSR%URRNILHOGX ,62
Plastics - Resins in the liquid state or as emulsions or dispersions - Determination of
apparent viscosity by the Brookfield Test method (ISO 2555:1989)
Kunststoffe - Harze im flüssigen Zustand, als Emulsionen oder Dispersionen -
Bestimmung der scheinbaren Viskosität nach dem Brookfield-Verfahren (ISO 2555:1989)
Plastiques - Résines a l'état liquide ou en émulsions ou dispersions - Détermination de la
viscosité apparente selon le Procédé Brookfield (ISO 2555:1989)
Ta slovenski standard je istoveten z: EN ISO 2555:1999
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
SIST EN ISO 2555:2000 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST EN ISO 2555:2000
---------------------- Page: 2 ----------------------
SIST EN ISO 2555:2000
---------------------- Page: 3 ----------------------
SIST EN ISO 2555:2000
---------------------- Page: 4 ----------------------
SIST EN ISO 2555:2000
ISO
INTERNATIONAL
STANDARD 2555
Second edition
1989-02-01
Corrected and reprinted
1990-02-01
Plastics - Resins in the liquid state or as
emulsions or dispersions - Determination of
apparent viscosity by the Brookfield Test method
Plas tiqwes - Rhsines 6 IWat liquide OW en emwlsions OW dispersions -
Dhermina tion de Ia viscosith apparen te selon Ie Procede Brookfield
Reference number
ISO 2555 : 1989 (El
---------------------- Page: 5 ----------------------
SIST EN ISO 2555:2000
ISO 2555 : 1989 (El
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, govern-
mental 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 approval before their acceptance as International Standards by
the ISO Council. They are approved in accordance with ISO procedures requiring at
least 75 % approval by the member bodies voting.
International Standard ISO 2555 was prepared by Technical Committee ISO/TC 61,
Plas tics .
This second edition cancels and replaces the first edition (ISO 2555 : 19741, of which it
constitutes a technical revision.
Annexes A and B form an integral part of this International Standard.
International Organkation for Standardkation, 1989
0
Printed in Switzerland
ii
---------------------- Page: 6 ----------------------
SIST EN ISO 2555:2000
~~
INTERNATIONAL STANDARD
ISO 2555 : 1989 (EI
Plastics - Resins in the liquid state or as emulsions
or dispersions - Determination of apparent viscosity
by the Brookfield Test methodl)
1 Scope The detailed working principle of this apparatus, its description
and the characteristics of the three types are given in annex B.
This International Standard specifies a method of determining
Esch viscometer consists of :
an apparent viscosity, by the Brookfield Test method, of resins
in a liquid or similar state, using one of the types of rotational
-
the viscometer body;
viscometer described in this Standard.
- seven interchangeable spindles numbered from 1 to 7
The application of this method to specific products is detailed
(number 1 being the largest); these spindles carry a mark
in annex A.
that indicates the immersion level in the liquid; they are the
same for the three types of viscometer; do not use spindles
The viscometers, types A, B and C, permit viscosity measure-
which show signs of corrosion or eccentricity;
ments from 0,02 Pas (20 CP) to 60 000 Pas (60 x 106 CP).
- a detachable guard stirrup (type A only).
The rotational frequencies available on the different types of
2 Principle
Brookfield viscometer are given in table 1.
A spindle, of cylindrical or related form (disc), is driven at a
NOTE - In the case of the Brookfield apparatus, the relationship be-
constant rotational frequency in the product being studied.
tween the models and available frequencies and viscometer types A, B
and C are given in table 1. Other rotational frequencies within the same
The resistance exerted by the fluid on the spindle, which
limits may be Chosen.
depends on the viscosity of the product, Causes a torque which
is indicated by a suitable meter. This measurement may be
based on tightening of a spiral spring depending on the torque,
Table 1 - Rotational frequencies available for the three
indicated by the movement of a needle on a dial.
types of viscometer
The apparent viscosity by the Brookfield Test method is obtained Viscometer
Model Rotational frequencies, min -1
by multiplying this dial reading by a coefficient which depends on
tYPe
I l
I 1
the rotational frequency and characteristics of the spindle.
20
RVF 2 4 10
The products to which this International Standard is applicable
50 100
A RVF 100 IO 20
are generally non-Newtonian and the measured viscosity
RVT 0,5 1 2,5 5 IO 20 50 100
depends on the velocity gradient to which the products are
2
B HAF 1 5 IO
subjected during the measurement.
HAT
0,5 1 2,5 5 IO 20 50 100.
With these types of viscometer, the velocity gradient is not the
same for every Point of the spindle. Thus, for a non-Newtonian
fluid, the result is not strictly the true “viscosity at a known
I C HBT HBF 0,5
1 1 2,5 2 5 5 IO IO 20 50 100
velocity gradient” and therefore is conventionally called the
apparent viscosity.
The shapes and sizes of the spindles are such that the
viscosities corresponding to a maximum torque indication on
the meter, for the various rotational frequencies, are those
3 Apparatus
given in table 2.
3.1 Brookfield-type viscometer, type A, B or C, Chosen The adjustment and calibration of these viscometers are usually
according to the product to be tested and the desired precision. carried out by the manufacturer of the apparatus.
1) The Brookfield Test method may be carried out using test equipment supplied by a number of manufacturers.
---------------------- Page: 7 ----------------------
SIST EN ISO 2555:2000
ISO 2555 : 1989 (EI
as a function of viscometer type,
Table 2 - Maximum value of viscosity (Pams)“)
rotational frequency and spindle
Rotational Spindle number
Viscometer
frequency
tYPe
min-1 1 2 3 4
5 6 7
100 OJ 03 1 2 4 IO 40
50 02 W3
2 4 8 20 80
20 0,5
2 5 IO 20 50 200
IO 1 4 IO 20 40 100
400
A 5 2
8 20 40 80 200 800
4 2,5 IO 25 50 100 250 1 000
23 4
16 40 80 160 400 1 600
2 5 20 50 100 200 500 2000
1 IO 40
100 200 400 1 000 4000
0,5 20 80 200 400 800 2 000 8 000
100 02 03 2 4 8 20 80
50 014 13
4 8 16 40 160
20 1 4 IO 20 40 100 1 400
IO 2
8 20 40 80 200 800
B 5 4 16 40 80 160 400 1 600
2,5 8 32
80 160 320 800 3200
2 IO 40 100 200 400 1 000 4 000
1
20 80 200 400 800 2000 8 000
0,5 40 160 400 . 800 1 600 4 000 16 000
100 W3 32 8 16 32
80 320
50 L6
6,4 16 32 64 160 640
20 4 16 40 80 160 400 1 600
IO 8
32 80 160 320 800 3200
C 5 16 64 160 320 640 1 600 6400
2,5 32 128
320 640 1280 . 3 200 12 800
2
40 160 400 800 1 600 4 000 16 000
1 80 320 800 1 600
3 200 8 000 32 000
015
160 640 1 600 3 200 6 400 16 000 64 000
*) 1 Pas = 103 CP
lt is recommended that the adjustment and calibration be 4 Choice of rotationai frequency and spindle
checked from time to time by means of Newtonian liquids of
known viscosity, either by the user’s laboratories or by official Choose the rotational frequency-spindle combination taking
standardizing laboratories. into account the value of the viscosity to be measured, the
desired precision and the velocity gradient. lt is necessary to
make this choice in such a way that no measurement cor-
3.2 Thermostatic liquid bath, to maintain the product
responds to less than 20 % or more than 95 % of full-scale
being tested at the test temperature with an accuracy of
deflection. However, for the best accuracy it is advisable to
+ 0,2 OC.
keep to the range 45 % to 95 % of full scale.
Recommended test temperatures, in degrees Celsius, are: 23,
25, 40, 55, 70, 85 and 100. If a comparison of viscosities between non-Newtonian pro-
ducts is desired, it is necessary to use the same rotational
NOTE - If the test has to be carried at higher temperatures, it is
frequency-spindle combination for all the measurements, even
advisable to use an extension shaft between the spindle and the
if the accuracy of one of the measurements is markedly
apparatus.
decreased.
3.3 Additional apparatus
The choice of rotational frequency automatically involves the
choice of one or more types of viscometer. In this connection,
3.3.1 Support, which holds the viscometer and moves it in a
it is recommended that, if possible, a rotational frequency of
vertical plane.
10 min - 1 be used.
3.3.2 Beaker, 90 mm to 92 mm in diameter and 115 mm to
The rotational frequency-spindle combination to be used shall
160 mm in height.
be specified in the document that prescribes the measurement
(see annex A, clause A.1). The choice may be made in terms of
3.3.3 Thermometer, graduated in 0,l OC, to measure the
the stated or expected viscosity, using table 2 and noting that
temperature of the product being tested. the most suitable range is between 45 % and 95 % of full scale.
2
---------------------- Page: 8 ----------------------
SIST EN ISO 2555:2000
ISO 2555 : 1989 (El
5 Procedure
Mount the viscometer, with its guard stirrup, when applicable A is a coefficient depending on the type of apparatus
(see sub-clause B.3.3 in annex B) on its support. Fill the beaker
whose value is 1 for type A, 2 for type B and 8 for type C;
(3.3.2) with the product to be tested, taking care not to
k is a coefficient depending on the rotational frequency-
introduce air bubbles, then place it in the bath (3.2) for a suffi-
spindle combination used; in the case of apparatus as
cient time to resch
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.