SIST EN ISO 4625-2:2006
(Main)Binders for paints and varnishes - Determination of softening point - Part 2: Cup-and-ball method (ISO 4625-2:2004)
Binders for paints and varnishes - Determination of softening point - Part 2: Cup-and-ball method (ISO 4625-2:2004)
ISO 4625-2:2004 specifies a method for determining the softening point of resins (including rosin) by means of a cup-and-ball apparatus and can, under user-defined conditions, give results comparable to those obtained using the ring-and-ball method (ISO 4625-1).
Bindemittel für Beschichtungsstoffe - Bestimmung der Erweichungstemperatur - Teil 2: Verfahren mit Becher und Kugel (ISO 4625-2:2004)
Liants pour peintures et vernis - Détermination du point de ramollissement - Partie 2: Méthode de la coupe et de la bille (ISO 4625-2:2004)
L'ISO 4625-2:2004 spécifie une méthode de détermination du point de ramollissement des résines (y compris la colophane) au moyen d'un appareil à coupe et à bille et peut, dans des conditions définies par l'utilisateur, fournir des résultats comparables à ceux obtenus avec la méthode de l'anneau et de la bille (ISO 4625-1).
Veziva za barve in lake – Ugotavljanje zmehčišča – 2. del: Metoda s čašo in kroglico (ISO 4625-2:2004)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2006
9H]LYD]DEDUYHLQODNH±8JRWDYOMDQMH]PHKþLãþD±GHO 0HWRGDVþDãRLQ
NURJOLFR ,62
Binders for paints and varnishes - Determination of softening point - Part 2: Cup-and-ball
method (ISO 4625-2:2004)
Bindemittel für Beschichtungsstoffe - Bestimmung der Erweichungstemperatur - Teil 2:
Verfahren mit Becher und Kugel (ISO 4625-2:2004)
Liants pour peintures et vernis - Détermination du point de ramollissement - Partie 2:
Méthode de la coupe et de la bille (ISO 4625-2:2004)
Ta slovenski standard je istoveten z: EN ISO 4625-2:2006
ICS:
87.060.20 Veziva Binders
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 4625-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2006
ICS 87.060.20
English Version
Binders for paints and varnishes - Determination of softening
point - Part 2: Cup-and-ball method (ISO 4625-2:2004)
Liants pour peintures et vernis - Détermination du point de Bindemittel für Beschichtungsstoffe - Bestimmung der
ramollissement - Partie 2: Méthode de la coupe et de la Erweichungstemperatur - Teil 2: Verfahren mit Becher und
bille (ISO 4625-2:2004) Kugel (ISO 4625-2:2004)
This European Standard was approved by CEN on 16 January 2006.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4625-2:2006: E
worldwide for CEN national Members.
Foreword
The text of ISO 4625-2:2004 has been prepared by Technical Committee ISO/TC 35 "Paints and
varnishes” of the International Organization for Standardization (ISO) and has been taken over
as EN ISO 4625-2:2006 by Technical Committee CEN/TC 139 "Paints and varnishes", the
secretariat of which is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by August 2006, and conflicting national
standards shall be withdrawn at the latest by August 2006.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Endorsement notice
The text of ISO 4625-2:2004 has been approved by CEN as EN ISO 4625-2:2006 without any
modifications.
INTERNATIONAL ISO
STANDARD 4625-2
First edition
2004-08-15
Binders for paints and varnishes —
Determination of softening point —
Part 2:
Cup-and-ball method
Liants pour peintures et vernis — Détermination du point de
ramollissement —
Partie 2: Méthode de la coupe et de la bille
Reference number
ISO 4625-2:2004(E)
©
ISO 2004
ISO 4625-2:2004(E)
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ii © ISO 2004 – All rights reserved
ISO 4625-2:2004(E)
Contents Page
Foreword. iv
1 Scope. 1
2 Normative references . 1
3 Terms and definitions. 1
4 Principle . 1
5 Apparatus. 2
6 Calibration of apparatus using a primary standard . 3
7 Instrument check of apparatus using a secondary standard. 3
8 Filling the cups with resin. 4
9 Procedure. 5
10 Expression of results. 5
11 Precision and bias . 5
12 Test report. 6
ISO 4625-2:2004(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. 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, 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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. 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.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 4625-2 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 10,
Test methods for binders for paints and varnishes, in collaboration with ASTM D01.34, Naval Stores. It has
been harmonized with ASTM D 6090-99, Standard Test Method for Softening Point of Resins (Mettler Cup
and Ball Method).
ISO 4625 consists of the following parts, under the general title Binders for paints and varnishes —
Determination of softening point:
— Part 1: Ring-and-ball method
— Part 2: Cup-and-ball method
iv © ISO 2004 – All rights reserved
INTERNATIONAL STANDARD ISO 4625-2:2004(E)
Binders for paints and varnishes — Determination of softening
point —
Part 2:
Cup-and-ball method
1 Scope
This part of ISO 4625 specifies a method for determining the softening point of resins (including rosin) by
means of a cup-and-ball apparatus and can, under user-defined conditions, give results comparable to those
obtained using the ring-and-ball method (ISO 4625-1).
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 4625-1, Binders for paints and varnishes — Determination of softening point — Part 1: Ring-and-ball
method
ISO 5725-1, Accuracy (trueness and precision) of measurement methods and results — Part 1: General
principles and definitions
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
softening point
temperature at which a test sample in a cylindrical cup with a 6,35 mm hole in the bottom, with a stainless-
steel ball 8,7 mm in diameter centred on top of the test sample in the cup, flows downward a distance of
19 mm to interrupt a light beam as the test sample is heated at a constant rate in air
4 Principle
In general, with materials of the types mentioned in Clause 1, softening does not take place at a definite
temperature. As the temperature rises, these materials gradually change from brittle or exceedingly thick and
slow-flowing materials to softer and less viscous liquids. For this reason, the determination of the softening
point must be made by a fixed, closely defined method if the results obtained are to be comparable.
A test sample, with the ball on it, is placed in a cup and heated at a specified rate. The softening test sample
is forced downwards by the weight of the ball. The temperature at which the test sample has sunk by 19 mm
is called the softening point.
ISO 4625-2:2004(E)
5 Apparatus
1)
5.1 Softening point apparatus , consisting of a control unit with a digital temperature indicator, matched
measuring cell, cartridge assembly (cup and upper portion) and accessories. The control unit automatically
regulates the heating rate of the measuring cell. The softening point is indicated on the readout, and the
heating programme is stopped, when the test sample flow triggers a photocell detector. Further details are
given in 5.1.1 to 5.1.4.
5.1.1 Central processor, capable of regulating the heating rate to provide a continuous, linear increase in
temperature from 25 °C to 375 °C.
5.1.2 Measuring cell, capable of heating the cup assembly (5.4) at a constant rate with an accuracy of
± 0,2 °C/min. It shall include a sensing system capable of detecting the softening point with a precision of
0,1 °C.
5.1.3 Cup assembly, made of chromium-plated brass, consisting of the cup itself and an upper portion,
conforming to the dimensions shown in Figure 1.
5.1.4 Ball, made of stainless steel, 8,7 mm in diameter and weighing (2,77 ± 0,22) g.
Dimensions in millimetres
Figure 1 — Cup
1) The apparatus is available commercially. Details may be obtained from the Secretariat of ISO/TC 35/SC 10.
2 © ISO 2004 – All rights reserved
ISO 4625-2:2004(E)
6 Calibration of apparatus using a primary standard
6.1 General
This step, required only occasionally, is designed to establish that the temperature indicated by the instrument
is in agreement with a known standard. A special cup with a bottom orifice of 2,8 mm is used instead of the
one specified for testing the resin.
NOTE The stainless-steel ball is not used during calibration.
6.2 Reagent
Use either analytical reagent or primary standard grade benzoic acid for the calibration. As this material is
hygroscopic, store it in a tightly sealed container and replace it with fresh material from a newly opened supply
if the softening point of the material is out of the expected range.
6.3 Procedure
6.3.1 Filling the cup
Place the cup on a clean, flat surface and fill it with benzoic acid crystals. Hand press the material into the cup
with a 9,2 mm rod of dowel stock or equivalent. Refill and repeat the compression step until the cup is filled
with benzoic acid. Remove any crystals from the exterior of the cup.
6.3.2 Heating
Preheat the measuring cell to 121 °C, and maintain it at that temperature. Pl
...
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