1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 1524:2013Paints, varnishes and printinginks Determinationof fineness of grind (ISO1524:2013)BS EN ISO 1524:2013 BRITISH STANDARDNational forewordThis British Standard i
2、s the UK implementation of EN ISO 1524:2013.It supersedes BS EN ISO 1524:2002 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee STI/10, Test methods for paints.A list of organizations represented on this committee can beobtained on request to its secretar
3、y.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 71908 0ICS 87.040Compliance with a British Standard cannot confer i
4、mmunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 April 2013.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1524 February 2013 ICS 87.040 Supersedes
5、EN ISO 1524:2002English Version Paints, varnishes and printing inks - Determination of fineness of grind (ISO 1524:2013) Peintures, vernis et encres dimprimerie - Dtermination de la finesse de broyage (ISO 1524:2013) Beschichtungsstoffe und Druckfarben - Bestimmung der Mahlfeinheit (Krnigkeit) (ISO
6、1524:2013) This European Standard was approved by CEN on 2 February 2013. 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 bibliogr
7、aphical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre 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 responsibi
8、lity of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic
9、 of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISA
10、TION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 1524:2013: EBS EN ISO 1524:2013EN ISO 1524:2013 (E) 3 Foreword This document (EN ISO
11、1524:2013) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes“ in collaboration with 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
12、an identical text or by endorsement, at the latest by August 2013, and conflicting national standards shall be withdrawn at the latest by August 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be
13、 held responsible for identifying any or all such patent rights. This document supersedes EN ISO 1524:2002. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cr
14、oatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
15、 the United Kingdom. Endorsement notice The text of ISO 1524:2013 has been approved by CEN as EN ISO 1524:2013 without any modification. BS EN ISO 1524:2013ISO 1524:2013(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO mem
16、ber 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, governmen
17、tal 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 Direct
18、ives, 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
19、 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 1524 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommi
20、ttee SC 9, General test methods for paints and varnishes.This fourth edition cancels and replaces the third edition (ISO 1524:2000), which has been technically revised. The main changes are as follows:a) products containing pigments in flake form (e.g. glass flakes, micaceous iron oxides, zinc flake
21、s) have been excluded from the scope;b) Figure 1 has been revised to show two examples of a typical gauge rather than one, and corrected to show the gauge scale in micrometres instead of millimetres;c) Figures 3 and 4 have been replaced by a new figure which indicates more clearly the reading on the
22、 gauge. ISO 2013 All rights reserved iiiBS EN ISO 1524:2013BS EN ISO 1524:2013Paints, varnishes and printing inks Determination of fineness of grind1 ScopeThis International Standard specifies a method for determining the fineness of grind of paints, inks and related products by use of a suitable ga
23、uge, graduated in micrometres.It is applicable to all types of liquid paints and related products, except products containing pigments in flake form (e.g. glass flakes, micaceous iron oxides, zinc flakes).Of the three gauges referred to in 4.1, the 100 m gauge is suitable for general use, but the 50
24、 m and especially the 25 m gauge will only provide reliable results in the hands of skilled laboratory personnel. Particular caution is necessary in interpreting readings of less than 10 m.2 Normative referencesThe following referenced documents are indispensable for the application of this document
25、. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 1513, Paints and varnishes Examination and preparation of test samplesISO 4618, Paints and varnishes Terms and definitionsISO 15528, Pa
26、ints, varnishes and raw materials for paints and varnishes Sampling3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 4618 and the following apply.3.1fineness of grindreading obtained on a standard gauge under specified conditions of test, indicating the
27、 depth of the groove(s) of the gauge at which discrete solid particles in the product are readily discernible4 Apparatus4.1 Gauge, consisting of a block of a hardened steel e.g. 175 mm long, 65 mm wide and 13 mm thick.At least for use with water-dilutable paints, a block of stainless steel should be
28、 used.The top surface of the block shall be both plane and ground smooth and shall contain one or two grooves approximately 140 mm long and 12,5 mm wide parallel to the longer sides of the block. The depth of each groove shall be uniformly tapered along its length from a suitable depth (for example
29、25 m, 50 m or 100 m) at one end to zero at the other end and shall be graduated as specified in Table 1. A diagram showing two typical gauges is given in Figure 1.INTERNATIONAL STANDARD ISO 1524:2013(E) ISO 2013 All rights reserved 1BS EN ISO 1524:2013ISO 1524:2013(E)Table 1 Graduation of typical ga
30、uges and recommended rangesMaximum depth of groove mInterval of graduations mRecommended range m100 10 40 to 9050 5 15 to 4025 2,5 5 to 15Figure 1 Two examples of a 100 m gaugeThe depth of the groove at any position along its length shall not depart from its nominal value at any position across the
31、groove depth by more than 2,5 m.The top surface of the block shall be finished by fine grinding or lapping; it shall be flat so that all points lie between two parallel planes 12 m apart and, in addition, at every position along the surface, the transverse generator shall be straight so that all poi
32、nts along it lie between two parallel straight lines 1 m apart. The top and bottom surfaces of the block shall be parallel within 25 m.Steel gauges of the approximate dimensions stated are suitable for the test, but other gauges giving similar results may be used.The precision of the fineness-of-gri
33、nd determination depends in part on which gauge is used (see Clause 6). Therefore it is essential to identify the gauge (100 m, 50 m or 25 m) when reporting results or specifying requirements.2 ISO 2013 All rights reservedBS EN ISO 1524:2013ISO 1524:2013(E)4.2 Scraper, consisting of a single- or dou
34、ble-edged steel blade approximately 90 mm long, 40 mm wide and 6 mm thick. The edge(s) on the long side(s) shall be straight and rounded to a radius of approximately 0,25 mm. A drawing of a suitable scraper is shown in Figure 2.The scraper shall be periodically checked for wear, damage or warpage. R
35、eject the scraper if inspection reveals damage.The top surface of the gauge may be used for routine checking of the scraper, provided it itself is not worn or warped.The scraper shall be handled and stored with particular care.Dimensions (approximate) in millimetresKey1 scraping edge, radius 0,25 mm
36、Figure 2 Suitable scraper5 SamplingTake a representative sample of the product to be tested, as described in ISO 15528.Examine and prepare each sample for testing, as described in ISO 1513.6 Procedure6.1 Carry out a preliminary determination to establish the size of gauge most suitable for the test
37、and the approximate fineness of grind of the test sample (see Table 1 and the second paragraph in 6.5). This approximate determination shall not be included in the results of the test.Then carry out the test in triplicate.6.2 Place the gauge (4.1), which shall be thoroughly clean and dry, on a flat,
38、 horizontal surface.6.3 Pour a sufficient amount of the sample into the deep end of the groove so that it overflows from the groove slightly. Take care that during pouring the sample does not trap any air. ISO 2013 All rights reserved 3BS EN ISO 1524:2013ISO 1524:2013(E)6.4 Grasp the scraper (4.2) b
39、etween the thumbs and fingers of both hands and place it edgewise in contact with the surface of the gauge at the extreme deep end of the groove, with the length of the scraper parallel to the width of the gauge. While holding the scraper perpendicular to the surface of the gauge and at right angles
40、 to the length of the groove, draw it at a uniform rate over the surface of the gauge to a point beyond the zero depth of the groove in 1 s to 2 s. In the case of lithographic inks, or fluids of similar consistency, the time required to draw the scraper over the length of the groove shall be not les
41、s than 5 s, in order to avoid too low a result. Apply sufficient downward pressure on the scraper to ensure that the groove is filled with the sample and that any surplus is removed.6.5 As quickly as possible (within seconds) after the completion of the drawdown, and while the paint is still wet, vi
42、ew the gauge from the side in such a manner that the line of vision is at right angles to the long dimension of the groove and at an angle of not more than 30 nor less than 20 to the surface of the gauge while it is in a light that will make the pattern of the sample in the groove readily visible.If
43、 the flow behaviour of the sample is such that a smooth pattern is not obtainable after drawdown, a minimal quantity of an appropriate thinner or binder solution may be added to the sample by hand stirring, and the test repeated. Any dilution shall be stated in the test report. In some instances, th
44、e dilution of the sample might lead to flocculation and the fineness of grind might be affected.6.6 Observe the point where the product first shows a predominately speckled appearance, that is, where a 3 mm wide band across the groove contains five to ten particles (see Figure 3). Disregard any scat
45、tered specks that might appear prior to the point where the predominately speckled appearance begins. Estimate the position of the upper limit of the band to the nearest 5 m for the 100 m gauge; 2 m for the 50 m gauge; 1 m for the 25 m gauge.6.7 Clean the gauge and scraper carefully with a suitable
46、solvent immediately after each reading.7 Expression of resultsCalculate the mean of the three determinations and record the result to the same accuracy as the original readings (see 6.6).8 Precision8.1 Repeatability limit, rThe value below which the absolute difference between two single test result
47、s, obtained on identical material by one operator, using the same equipment, in one laboratory within a short interval of time using the standardized test method, may be expected to lie with a 95 % probability is 10 % of the range of the gauge.8.2 Reproducibility limit, RThe value below which the ab
48、solute difference between two single test results, obtained on identical material by operators in different laboratories, using the standardized test method, may be expected to lie with a 95 % probability is 20 % of the range of the gauge.4 ISO 2013 All rights reservedBS EN ISO 1524:2013ISO 1524:201
49、3(E)Figure 3 Example of a gauge reading 45 m9 Test reportThe test report shall contain at least the following information:a) all details necessary for complete identification of the product tested;b) a reference to this International Standard (ISO 1524);c) the designation of the gauge used;d) details of any dilution (see 6.5);e) the result of the test, expressed in micrometres, as indicated in Clause 7;f) any deviation, by agreement or otherwise, from the procedure specified;g) any unusual features (anomalies) obse
