1、 DEUTSCHE NORMApril 2006DIN EN ISO 14680-3 ICS 87.060.10 Supersedes DIN 55678-3:1988-10 Paints and varnishes Determination of pigment content Part 3: Filtration method (ISO 14680-3:2000) English version of DIN EN ISO 14680-3:2006-04 Beschichtungsstoffe Bestimmung des Pigmentgehaltes Teil 3: Filtrati
2、onsverfahren (ISO 14680-3:2000) Englische Fassung DIN EN ISO 14680-3:2006-04 Document comprises 8 pages No part of this standard may be reproduced without prior permission of DIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany, has the exclusive right of sale fo
3、r German Standards (DIN-Normen). English price group 7 www.din.de www.beuth.de !,nhI“11.06 9756938DIN EN ISO 14680-3:2006-04 2 National foreword This standard has been published in accordance with a decision taken by CEN/TC 139 to adopt, without al-teration, International Standard ISO 14680-3 as a E
4、uropean Standard. The responsible German body involved in its preparation was the Normenausschuss Beschichtungsstoffe und Beschichtungen (Coatings and Coating Materials Standards Committee), Technical Committee NAB 7 Allge-meine Prfverfahren fr Beschichtungsstoffe und Beschichtungen. DIN EN ISO 1468
5、0 consists of the following parts, under the general title Paints and varnishes Determi-nation of pigment content: Part 1: Centrifuge method Part 2: Ashing method Part 3: Filtration method The DIN Standards corresponding to the International Standards referred to in clause 2 of the EN are as fol-low
6、s: ISO 1513 DIN EN ISO 1513 ISO 15528 DIN EN ISO 15528 Amendments This standard differs from DIN 55678-3, October 1988 edition, as follows: a) ISO 14680-3:2000 has been adopted in its entirety. b) The standard has been editorially revised. Compared with DIN 55678-3:1988-10, no technical changes have
7、 been made. Previous editions DIN 55678-3: 1988-10 National Annex NA (informative) Bibliography DIN EN ISO 1513, Paints and varnishes Examination and preparation of samples DIN EN ISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling EUROPEAN STANDARDNORME EUROPENNEEUROPIS
8、CHE NORMEN ISO 14680-3February 2006ICS 87.060.10English VersionPaints and varnishes - Determination of pigment content - Part 3: Filtration method (ISO 14680-3:2000)Peintures et vernis - Dtermination de la teneur en pigment- Partie 3: Mthode par filtration (ISO 14680-3:2000)Beschichtungsstoffe - Bes
9、timmung des Pigmentgehaltes -Teil 3: Filtrationsverfahren (ISO 14680-3:2000)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 EuropeanStandard the status of a national
10、 standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 othe
11、r language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, Franc
12、e,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMU
13、NGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 14680-3:2006: EContentsForeword1 Scope2 Normative references3 Term and definition .4 Principle5 Apparatus.6 Reagents an
14、d materials 7 Sampling.8 Procedure.9 Expression of results10 Precision.11 Test reportForeword The text of ISO 14680-3:2000 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 14680-3:2
15、006 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 standar
16、ds 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,
17、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 14680-3:2000 has been approved by CEN as EN ISO 14680-3:2006 without a
18、ny modifications. EN ISO 14680-3:2006 (E)EN ISO 14680 2006 (E)22333444455561 ScopeThis part of ISO 14680 is one of a series of standards dealing with the sampling and testing of paints, varnishesand related products.It specifies a method for determining the pigment content of paints in which potassi
19、um hydroxide solution is addedto coagulate the pigment and the resulting solids filtered off. The method is particularly applicable to coatingmaterials containing carbon black, very finely divided silicon dioxide, very finely divided titanium dioxide, organicpigments or polymer dispersions. It is no
20、t applicable to many water-dilutable paints because the whole binder willcoagulate when the potassium hydroxide solution is added.The pigment content of coating materials can also be determined by a centrifuge method (see ISO 14680-1) or byan ashing method (see ISO 14680-2).2 Normative referencesThe
21、 following normative documents contain provisions which, through reference in this text, constitute provisions ofthis part of ISO 14680. For dated references, subsequent amendments to, or revisions of, any of these publicationsdo not apply. However, parties to agreements based on this part of ISO 14
22、680 are encouraged to investigate thepossibility of applying the most recent editions of the normative documents indicated below. For undatedreferences, the latest edition of the normative document referred to applies. Members of ISO and IEC maintainregisters of currently valid International Standar
23、ds.ISO 1513:1992, Paints and varnishes Examination and preparation of samples for testing.ISO 15528:1), Paints, varnishes and raw materials for paints and varnishes Sampling.3 Term and definitionFor the purposes of this part of ISO 14680, the following term and definition apply.3.1pigment content, d
24、etermined by filtrationthe proportion by mass of solid particles which is left behind as a residue on filtration under specified conditions inthe product under testNOTE It includes pigments, extenders and other solid constituents of the product.1) To be published. (Revision of ISO 842:1984 and ISO 1
25、512:1991)EN ISO 14680-3:2006 (E)34PrincipleAfter it has been diluted with solvent and a solution of potassium hydroxide in methanol has been added, a testportion of the product under test is filtered using a glass filter crucible containing a bed of filtering aid. The solidsremoved by filtration are
26、 dried and weighed. In the case of completely soluble binders, the pigment content iscalculated from the mass of the solids and that of the test portion.5 ApparatusOrdinary laboratory apparatus and glassware, together with the following:5.1 50 ml wide-neck conical flask, with conical socket and fitt
27、ing polytetrafluoroethylene stopper. The conicalsocket shall not be greased.5.2 G3 glass filter crucible (pore size 15 G6dmto40G6dm).5.3 Suction flask, with filter adapter and rubber seal.5.4 5 ml safety pipette.5.5 50 ml measuring cylinder.5.6 Drying oven, with forced ventilation, capable of being
28、maintained at (105 Gb1 2) C. The air flow shall behorizontal.WARNING At the temperature used, organic solvent can form explosive mixtures with air. It is thereforeimportant that the solvent vapour concentration in the oven is not allowed to exceed a value at which anexplosion could occur.For referee
29、 tests, ovens of the same design shall be used by all parties.5.7 Analytical balance, capable of weighing to 0,001 g.5.8 Desiccator.6 Reagents and materials6.1 Filtering aid, for example diatomaceous earth.6.2 Potassium hydroxide solution in methanol, c(KOH) = 1 mol/l.6.3 Methanol, analytical grade.
30、6.4 Suitable organic solvent.7 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.EN ISO 14680-3:2006 (E)48 Procedure8.1 Preparation of glass filter crucibleSuspend 10 g of filtering aid (6
31、.1) in 150 ml of distilled water. Pour the suspension into the glass filter crucible (5.2)and remove the water by suction. Dry the glass filter crucible with the bed of filtering aid for 1 h at (105 Gb1 2) C inthe drying oven (5.6), cool to room temperature in the desiccator (5.8) and weigh to the n
32、earest 0,001 g.8.2 Determination of pigment contentCarry out the test in duplicate.Weigh1gto2gofsample(m2) to the nearest 0,001 g into the conical flask (5.1) and add immediately 20 ml of asuitable organic solvent from the measuring cylinder (5.5). Then, using the safety pipette (5.4), add 1,5 ml of
33、methanolic potassium hydroxide solution to the contents of the flask and close it with the stopper.After 5 min, filter the contents of the flask into the weighed glass filter crucible (m1) prepared as described in 8.1.Rinse any residue in the flask into the crucible using 20 ml of a suitable organic
34、 solvent from a measuring cylinder,then wash the solids on the filter with methanol until they are free of alkali. Dry the glass filter crucible to constantmass in the oven at 105 C, cool it to room temperature in the desiccator and weigh to the nearest 0,001 g (m3).9 Expression of resultsCalculate
35、the pigment content as a percentage by mass using the following equation:Pigment content =mmm312100G2dGb4wherem1is the mass, in grams, of the prepared glass filter crucible;m2is the mass, in grams, of the test portion;m3is the mass, in grams, of the prepared glass filter crucible and the solids.If t
36、he two results (duplicates) differ by more than 0,5 % (relative to the mean), repeat the procedure described inclause 8.Calculate the mean of two valid results (replicates) and report the test result to the nearest 0,1 % by mass.10 Precision10.1 Repeatability, rThe value below which the absolute dif
37、ference between two single test results, each the mean of duplicates,obtained on identical material by one operator in one laboratory within a short interval of time using thestandardized test method may be expected to lie with a 95 % probability is 0,5 %.10.2 Reproducibility, RThe value below which
38、 the absolute difference between two test results, each the mean of duplicates, obtained onidentical material by operators in different laboratories using the standardized test method may be expected to liewith a 95 % probability is 1 %.EN ISO 14680-3:2006 (E)511 Test reportThe test report shall con
39、tain at least the following information:a) all details necessary to identify the product tested;b) a reference to this part of ISO 14680 (ISO 14680-3);c) the organic solvent used;d) the result of the test as indicated in clause 9, including the individual values and the mean value;e) any deviation from the test method specified;f) the date of the test.EN ISO 14680-3:2006 (E)6
