1、 DEUTSCHE NORMApril 2006DIN EN ISO 14680-2 ICS 87.060.10 Supersedes DIN 55678-2:1988-10 Paints and varnishes Determination of pigment content Part 2: Ashing method (ISO 14680-2:2000) English version of DIN EN ISO 14680-2:2006-04 Beschichtungsstoffe Bestimmung des Pigmentgehaltes Teil 2: Veraschungsv
2、erfahren (ISO 14680-2:2000) Englische Fassung DIN EN ISO 14680-2:2006-04 Document comprises 7 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 for Ge
3、rman Standards (DIN-Normen). English price group 7 www.din.de www.beuth.de !,nhH“11.06 9756937DIN EN ISO 14680-2:2006-04 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 14680-2 as a Europ
4、ean 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 14680 co
5、nsists of the following parts, under the general title Paints and varnishes Determina-tion 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-lows: I
6、SO 1513 DIN EN ISO 1513 ISO 15528 DIN EN ISO 15528 Amendments This standard differs from DIN 55678-2, October 1988 edition, as follows: a) ISO 14680-2:2000 has been adopted in its entirety. b) The standard has been editorially revised. Compared with DIN 55678-2:1988-10, no technical changes have bee
7、n made. Previous editions DIN 55678-2: 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 EUROPENNEEUROPISCHE
8、NORMEN ISO 14680-2February 2006ICS 87.060.10English VersionPaints and varnishes - Determination of pigment content - Part 2: Ashing method (ISO 14680-2:2000)Peintures et vernis - Dtermination de la teneur en pigment- Partie 2: Mthode par calcination (ISO 14680-2:2000)Beschichtungsstoffe - Bestimmung
9、 des Pigmentgehaltes -Teil 2: Veraschungsverfahren (ISO 14680-2:2000)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 standa
10、rd 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 other langu
11、age 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, France,Germa
12、ny, 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 NORMUNGManag
13、ement 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 14680-2:2006: EContentsForeword1 Scope2 Normative references3 Term and definition .4 Principle5 Apparatus.6 Sampling.7 Procedu
14、re.8 Expression of results9 Precision.10 Test report2EN ISO 14680-2:2006 (E)Foreword The text of ISO 14680-2:2000 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 14680-2:2006 by Te
15、chnical 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
16、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, H
17、ungary, 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 14680-2:2000 has been approved by CEN as EN ISO 14680-2:2006 without any modifi
18、cations. 233344445551 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 the product under test is ashed. Themethod is not applicable t
19、o coating materials containing aluminium, organic pigments and/or dyestuffs, or inorganicpigments treated with organic compounds. Such constituents, which could make up about 10 % of the pigment, willbe lost during ashing.As the state of many pigments and extenders changes under the specified test c
20、onditions, it will depend on thecomposition and the chosen ashing temperature whether the actual pigment content of the product under test canbe deduced from the apparent pigment content found by this method.The method is generally not suitable for UV paints and varnishes or those containing reactiv
21、e diluents requiringspecial heating conditions.The pigment content of coating materials can also be determined by a centrifuge method (see ISO 14680-1) or by afiltration method (see ISO 14680-3).2 Normative referencesThe following normative documents contain provisions which, through reference in th
22、is 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 14680 are encouraged to investigate thepossibility of applying the most recent edi
23、tions 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 Standards.ISO 1513:1992, Paints and varnishes Examination and preparation of samples fo
24、r 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.1) To be published. (Revision of ISO 842:1984 and ISO 1512:1991)3EN ISO 14680-2:2006 (E)3.1pigment co
25、ntent, determined by ashingthe proportion by mass of the product under test which is left as a residue after ashing under the specifiedconditionsNOTE It includes inorganic pigments, extenders and other solid constituents of the product which are not volatile under thetest conditions; however, their
26、state may have altered.4PrincipleAfter evaporating the solvent in a test portion of the product under test, the residue is ashed either at about 600 Cto 900 C, or at 450 C in the presence of carbonates. The presence of carbonate should be determined by someother, qualitative analytical technique. Th
27、e pigment content is calculated from the mass of the ignition residue andthat of the test portion.NOTE Some binders are not fully ashed at 450 C. The result obtained at that temperature may therefore have poorrepeatability.5 ApparatusOrdinary laboratory apparatus and glassware, together with the fol
28、lowing:5.1 Porcelain crucible, tall form.5.2 Drying oven, with forced ventilation, capable of being maintained at (80 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 conc
29、entration in the oven is not allowed to exceed a value at which anexplosion could occur.For referee tests, ovens of the same design shall be used by all parties.5.3 Crucible tongs.5.4 Muffle furnace or fast incinerator.5.5 Analytical balance, capable of weighing to 0,001 g.5.6 Desiccator.6 SamplingT
30、ake 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 1513.7 ProcedureCarry out the test in duplicate.Heat a porcelain crucible (5.1) to constant mass (m1) in the muffle furnace or fast incinerator (5.4) at
31、 a temperaturein accordance with clause 4 and, after cooling in the desiccator (5.6), weigh about 2 g of the sample (m2)tothenearest 0,001 g into it. Place the porcelain crucible in the oven (5.2) at (80 Gb1 2) C and heat until all the solvent hasevaporated. Then remove it from the oven and place it
32、 in the muffle furnace or fast incinerator and heat the latter tothe ashing temperature (see clause 4). In most cases, ashing will be complete after 2 h.4EN ISO 14680-2:2006 (E)Cool the porcelain crucible by placing it in the desiccator for at least 30 min. Weigh it to the nearest 0,001 g, thenplace
33、 it in the muffle furnace or fast incinerator again for 15 min. Cool it to room temperature in the desiccator andweigh it again. Repeat these operations until the mass (m3) is constant.8 Expression of resultsCalculate the pigment content as a percentage by mass using the following equation:Pigment c
34、ontent =mmm312100G2dGb4wherem1is the mass, in grams, of the porcelain crucible;m2is the mass, in grams, of the test portion;m3is the mass, in grams, of the porcelain crucible and residue.If the two results (duplicates) differ by more than 0,5 % (relative to the mean), repeat the procedure described
35、inclause 7.Calculate the mean of two valid results (replicates) and report the test result to the nearest 0,1 % by mass.9 Precision9.1 Repeatability, rThe value below which the absolute difference between two single test results, each the mean of duplicates,obtained on identical material by one oper
36、ator in one laboratory within a short interval of time using thestandardized test method may be expected to lie with a 95 % probability is 2 %.9.2 Reproducibility, RThe value below which the absolute difference between two test results, each the mean of duplicates, obtained onidentical material by o
37、perators in different laboratories using the standardized test method may be expected to liewith a 95 % probability is 4 %.10 Test reportThe test report shall contain at least the following information:a) all details necessary to identify the product tested;b) a reference to this part of ISO 14680 (ISO 14680-2);c) the ashing temperature used;d) the result of the test as indicated in clause 8, including the individual values and the mean value;e) any deviation from the test method specified;f) the date of the test.5EN ISO 14680-2:2006 (E)
