BS EN ISO 15880-2001 Paints varnishes and binders Determination of MEQ value of water-based coating materials and binders《涂料 清漆和粘合剂 水基涂料和粘合剂的MEQ值的测定》.pdf

1、BRITISH STANDARD BS EN ISO 15880:2004 BS 6782-17:2001 Incorporating Amendment No. 1 to BS 6782-17:2001 (renumbers BS 6782-17:2001 as BS EN ISO 15880:2004) Paints, varnishes and binders Determination of MEQ value of water-based coating materials and binders The European Standard EN ISO 15880:2004 has

2、 the status of a British Standard ICS 87.060.20 BS EN ISO 15880:2004 This British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 March 2001 BSI 14 July 20

3、04 ISBN 0 580 36863 7 National foreword This British Standard is the official English language version of EN ISO 15880:2004. It is identical with ISO 15880:2000. The UK participation in its preparation was entrusted to Technical Committee STI/3, Paint media and related products, which has the respon

4、sibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “Int

5、ernational Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a

6、British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related internationa

7、l and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to iv, pages 1 to 4, the Annex ZA page and a back cover. The BSI copyright notice di

8、splayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 15242 14 July 2004 Implementation of the European StandardEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO15880 May2004 ICS87.060.20 Englishversion Paints,varnishesand

9、bindersDeterminationofMEQvalueof waterbasedcoatingmaterialsandbinders(ISO15880:2000) Peintures,vernisetliantsDterminationdelavaleurMEQ desproduitsdepeintureetliantsbasedeau(ISO 15880:2000) BeschichtungsstoffeundBindemittelBestimmungdes MEQWertesvonwasserverdnnbaren BeschchtungsstoffenundBindemitteln

10、(ISO15880:2000) ThisEuropeanStandardwasapprovedbyCENon8April2004. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational

11、 standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe o

12、fficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,Finland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Slovakia, Slovenia,Spain,Sweden,SwitzerlandandUnitedKingd

13、om. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2004CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO15880:2004EINESO51:0882004(E) 2 Foreword ThetextofI

14、SO15880:2000hasbeenpreparedbyTechnicalCommitteeISO/TC35“Paintsand varnishes”oftheInternationalOrganizationforStandardization(ISO)andhasbeentakenover asENISO15880:2004byTechnicalCommitteeCEN/TC139“Paintsandvarnishes“,the secretariatofwhichisheldbyDIN. ThisEuropeanStandardshallbegiventhestatusofanatio

15、nalstandard,eitherbypublicationof anidenticaltextorbyendorsement,atthelatestbyNovember2004,andconflictingnational standardsshallbewithdrawnatthelatestbyNovember2004. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsof thefollowingcountriesareboundtoimplementthisEuropeanS

16、tandard:Austria,Belgium, Cyprus,CzechRepublic,Denmark,Estonia,Finland,France,Germany,Greece,Hungary, Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland, Portugal,Slovakia,Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. Endorsementnotice ThetextofISO15880:2000hasbeen

17、approvedbyCENasENISO15880:2004withoutany modifications. NOTENormativereferencestoInternationalStandardsarelistedinAnnexZA(normative). 2egaP ENISO15880:2004Reference number ISO 15880:2000(E) INTERNATIONAL STANDARD ISO 15880 First edition 2000-10-15 Paints, varnishes and binders Determination of MEQ v

18、alue of water-based coating materials and binders Peintures, vernis et liants Dtermination de la valeur MEQ des produits de peinture et liants base deau BS678217:20013egaP ENISO15880:2004ii ENISO15880:2004ISO 08851:(0002)Eiii Contents Page 1 Scope 1 2 Normative references 1 3 Term and definition .1

19、4 Reagents.1 5 Apparatus .2 6 Sampling.2 7 Procedure2 8 Expression of results 3 9 Precision .3 10 Test report.4 BS678217:20013egaP ENISO15880:2004ISO 08851:(0002)E iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member

20、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

21、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 Directive

22、s, Part 3. 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 element

23、s of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 15880 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 10, Test methods for binders fo

24、r paints and varnishes. BS678217:20012egaP ENISO15880:2004INTENRATIONAL TSANDADR ISO 08851:(0002)E1 Paints, varnishes and binders Determination of MEQ value of water-based coating materials and binders 1 Scope This International Standard specifies a titrimetric method for determining the MEQ (milli-

25、equivalent) value of water- based binders and coating materials, either as an MEQ(acid) value or an MEQ(alkali) value. In contrast to other values, e.g. the acid value, saponification value or hydroxyl value, the MEQ value is always related to the non-volatile matter content of the binder or coating

26、 material. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, partie

27、s to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintai

28、n registers of currently valid International Standards. ISO 3251:1993, Paints and varnishes Determination of non-volatile matter of paints, varnishes and binders for paints and varnishes. ISO 15528:2000, Paints, varnishes and raw materials for paints and varnishes Sampling. 3 Term and definition For

29、 the purposes of this International Standard, the following term and definition applies. 3.1 MEQ value the number of milli-equivalents (MEQ) of acid or base contained in 100 g of the non-volatile matter of a water- based coating material or binder 4 Reagents 4.1 Potassium hydroxide, standard volumet

30、ric solution, c(KOH) = 0,1 mol/l, in 95 % by volume ethanol or in water. 4.2 Hydrochloric acid, standard volumetric solution, c(HCl) = 0,1 mol/l, in water. 4.3 Perchloric acid, standard volumetric solution, c(HClO 4 )=0 ,1mol/ l,i na cet i ca cid . BS678217:20011egaP ENISO15880:2004ISO 08851:(0002)E

31、 2 4.4 Solvent, for dissolving the sample. The type and volume of solvent used depend on the solubility of the product under test, but allowance for this is made by carrying out a blank test. The solvent shall be inert to the neutralizing agent and shall be such that no precipitation occurs during t

32、he titration. NOTE In most cases, methoxypropanol has been found suitable. If necessary, an emulsifier may be used in addition to the solvent. 5 Apparatus Ordinary laboratory apparatus and glassware, together with the following: 5.1 Titration vessel, e.g. conical flask, of suitable size. 5.2 Analyti

33、cal balance, capable of weighing to an accuracy of 0,1 mg. 5.3 Heating device. 5.4 Magnetic stirrer. 5.5 Potentiometric titration apparatus, i.e. pH-meter or voltage meter fitted with a glass electrode and a reference electrode. 6 Sampling Take a representative sample of the product to be tested, as

34、 described in ISO 15528. 7 Procedure 7.1 General Carry out the determination in duplicate. 7.2 Test portion The mass shall be chosen so that the volume of neutralizing agent used is about 10 ml. 7.3 Determination of the non-volatile matter content Determine the non-volatile matter content as describ

35、ed in ISO 3251. 7.4 Determination of MEQ(acid) Weigh, to the nearest 0,001 g, a test portion (mass m 1 ) into the titration vessel (5.1) and dissolve, if necessary using the heating device (5.3) and the magnetic stirrer (5.4), in solvent (4.4). If necessary, cool the solution to room temperature bef

36、ore carrying out the determination. Titrate the solution with potassium hydroxide solution (4.1) till the point of inflection of the titration curve is reached (volume V 1 ). If the titration curve shows several steps, take that step located in the most alkaline region as the end point. Carry out a

37、blank determination following the same procedure, but omitting the test portion (volume V 2 ). BS678217:20012egaP ENISO15880:2004ISO 08851:(0002)E3 7.5 Determination of MEQ(alkali) Weigh, to the nearest 0,001 g, a test portion (mass m 2 ) into the titration vessel (5.1) and dissolve, if necessary us

38、ing the heating device (5.3) and the magnetic stirrer (5.4), in solvent (4.4). If necessary, cool the solution to room temperature before carrying out the determination. Titrate the solution with hydrochloric acid (4.2) or perchloric acid (4.3) till the point of inflection of the titration curve is

39、reached (volume V 3 ). If the titration curve shows several steps, take that step located in the most acidic region as the end point. The use of hydrochloric acid is preferred. In some cases, e.g. when testing water-based coating materials, hydrochloric acid can cause precipitation. In such cases, p

40、erchloric acid shall be used. Carry out a blank determination following the same procedure, but omitting the test portion (volume V 4 ). 8 Expression of results Calculate the MEQ value, in millimoles per 100 g of non-volatile matter, by the following equations: 12 1 10000 MEQ(acid) NV VVc m (1) 34 2

41、 10 000 MEQ(alkali) NV VVc m (2) where V 1 is the volume, in millilitres, of potassium hydroxide solution required for the determination in 7.4; V 2 is the volume, in millilitres, of potassium hydroxide solution required for the blank determination in 7.4; V 3 is the volume, in millilitres, of hydro

42、chloric acid or perchloric acid required for the determination in 7.5; V 4 is the volume, in millilitres, of hydrochloric acid or perchloric acid required for the blank determination in 7.5; c is the concentration, in moles per litre, of the titrant (= 0,1 mol/l, see 4.1 to 4.3); m 1 , m 2 is the ma

43、ss, in grams, of the test portion; NV is the non-volatile matter content, expressed as a percentage by mass (see 7.3). Report as the final result the mean to three significant figures, but in any case rounded to not more than one decimal place. 9 Precision 9.1 Repeatability limit (r) The value below

44、 which the absolute difference 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 the standardized test method, may be expected to lie with a 95 % probability is 5 % (relative to the mea

45、n of the two test results) for MEQ(acid) and 3 % (relative to the mean of the two test results) for MEQ(alkali). BS678217:20013egaP ENISO15880:2004ISO 08851:(0002)E 4 9.2 Reproducibility limit (R) The value below which the absolute difference between two single test results, each the mean of duplica

46、tes, obtained on identical material by operators in different laboratories using the standardized test method, may be expected to lie with a 95 % probability is 8 % (relative to the mean of the two test results) for MEQ(acid) and 6 % (relative to the mean of the two test results) for MEQ(alkali). 10

47、 Test report The test report shall contain at least the following information: a) a reference to this International Standard (ISO 15880); b) all details necessary for complete identification of the product tested (manufacturer, trade name, batch number, etc.); c) the result of the test as indicated in clause 8; d) any deviation from the test method specified; e) the date of the test. BS678217:20014egaP ENISO15880:2004INESO51:0882004(E) 3 AnnexZA (normative) Normativereferencestointernationalpublications withtheirrelevantEuropeanpublications ThisEuropeanStandardincorporatesbydatedorundat